csc-211 multifunction protection ied product guide v1.2 ... · extensive multifunction ied...
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CSC-211Multifunction Protection IED
Product Guide
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Version:V1
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Date:2013
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Applicable i
and distribu
earthed (g
earthed, is
neutral point
Protection
auxiliary tran
Used as b
nes, tran
busbar
Providing
unctions o
s are select
ce multifun
Electronic
be applied
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n subtransm
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Device), w
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nt for follo
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Feature
2
Extensive multifunction IED including
protection, control and monitoring
functions
Three pole tripping required in
sub-transmission and distribution
network
A complete protection function library,
includes:
Overcurrent protection (50, 51,
67)
Earth fault protection (50N, 51N,
67N)
Neutral earth fault protection (50G,
51G)
Sensitive earth fault protection
(50Ns, 51Ns, 67Ns)
Negative-sequence overcurrent
protection (46)
Thermal overload protection (49)
Overload protection (50OL)
Overvoltage protection (59)
Undervoltage protection (27)
Displacement voltage protection
(64)
Circuit breaker failure protection
(50BF)
Dead zone protection (50DZ)
Synchro-check and energizing
check (25)
Auto-reclosing function (79)
Unbalanced current or voltage
protection
Undercurrent protection (37)
load shedding function
Voltage transformer secondary
circuit supervision (97FF)
Current transformer secondary
circuit supervision
Fast overcurrent/busbar protection
scheme using IEC61850 GOOSE-
-message
User definable LEDs, binary inputs and
outputs.
Primary apparatus local/remote control
function
Programmable interlock logic
Tripping and closing circuit
supervision
Opening and closing lockout
function
CB status supervision
Self-supervision to all modules in the
IED
Complete and massive reports
recording, trip reports, alarm reports,
startup reports and operation reports.
Any kinds of reports can be stored no
less than 40 items, and be memorized
in case of power disconnection
Up to two electric /optical Ethernet
ports can be selected to communicate
with substation automation system by
IEC61850 or IEC60870-5-103
protocols
Up to two electric RS-485 port is able
to communicate with substation
automation system by IEC60870-5-103
protocol
Time synchronization via network
Feature
3
(SNTP), pulse and IRIG-B mode
Versatile human-machine interface,
graphic or alphanumeric options
Multifunctional software tools set for
setting, monitoring, fault recording
analysis, configuration, logic
programming etc.
Function
4
Protection functions
Description ANSI Code
IEC 61850
Logical Node
Name
IEC 60617
graphical symbol
Current protection
Overcurrent protection 50,51,67 PTOC
3IINV>
3I >>
3I >>>
Earth fault protection 50N, 51N, 67N PTEF
I0INV>
I0>>
I0>>>
Neutral earth fault protection 50G, 51G
Sensitive earth fault protection 50Ns, 51Ns,
67Ns
3INE>
3INE>>
Negative-sequence overcurrent protection 46
Thermal overload protection 49 PTTR Ith
Overload protection 50OL PTOC 3I >OL
Voltage protection
Overvoltage protection 59 PTOV 3U>
3U>>
Undervoltage protection 27 PTUV 3U<
3U<<
Displacement voltage protection 64 VE>
Breaker protection and control function
Breaker failure protection 50BF RBRF
3I> BF
I0>BF
I2>BF
Dead zone protection 50DZ
Synchro-check and energizing check 25 RSYN
Auto-reclosing 79 RREC O→I
Three-pole tripping 94-3 PTRC
Capacitor bank protection
Unbalanced current protection 46NC
Unbalanced voltage protection 46NU
Function
5
Undercurrent protection 37 I<
Load shedding function
Underfrequency load shedding function 81U
Undervoltage load shedding function 27
Overload load shedding function
Secondary system supervision
CT secondary circuit supervision
VT secondary circuit supervision 97FF
Other functions
Fast busbar protection using reverse
interlocking
Disturbance recorder
Control functions
Description ANSI Code IEC 61850
Logical Node Name
IEC 60617
graphical symbol
Remote/Local circuit breaker, disconnector
and other switching devices control
Programmable interlock logic
Tripping and closing circuit supervision
Opening and closing lockout function
Monitoring functions
Description
Status of circuit breaker, disconnector and other switching device monitoring
Circuit breaker operating status supervision
Auxiliary contacts of circuit breaker supervision
Self-supervision
Function
6
Station communication
Description
Front communication port
Isolated RS232 port or RJ45 Ethernet port
Rear communication port
0-2 isolated electrical RS485 communication ports, support IEC 60870-5-103 protocol
0-2 Ethernet electrical/optical communication ports, support IEC 61850 protocol or IEC 60870-5-103
protocol
Time synchronization port, support GPS pulse or IRIG-B code
IED software tools
Functions
Reading measuring value
Reading IED report
Setting
IED testing
Disturbance recording analysis
IED configuration
Printing
Function
7
59 3U>
PTOV
27 3U<
PTUV
25
MONITORING
STATIONCOMMUNICATION
50 3I >>>
PIOC
50N I0>>>
PIEF
PTOC
51/67 3I> 3I>>
51N/67N I0> I0>>
PTEF
50BF
RBRF
3I>BF
- RS232/485 - RJ45/FO- IEC61850 - IEC60870-5-103
37
Ith
PTTR
49
46
50Ns
51Ns/67Ns
32
55
46NU
64
79 O→I
RREC
MEASUREMENT
INTERLOCK
&
CONTROL
ENERGY METERCALCULATED
UE>
RSYN
3INE>>
3INE>
46NI
Disturbance recording
Protection
8
Overcurrent protection (50, 51, 67)
The protection provides following features:
Two definite time stages
One inverse time stage
11 kinds of IEC and ANSI inverse time
characteristic curves as well as
optional user defined characteristic
Settable directional element
characteristic angle to satisfy the
different network conditions and
applications
Each stage can be set individually as
directional/non-directional
Each stage can be set individually for
inrush restraint
Cross blocking function for inrush
detection
Settable maximum inrush current
First definite stage and inverse time
stage can be set individually to alarm
or trip
VT secondary circuit supervision for
directional protection. Once VT failure
happens, the directional stage can be
set to be blocked or to be
non-directional
Under voltage criteria checking
(selectable), blocking of the definite
time stages is possible when the
measured voltage exceeds the
threshold
Inrush restraint function
The protection relay may detect large
magnetizing inrush currents during
transformer energizing. In addition to
considerably unbalanced fundamental
current, inrush current comprises large
second harmonic current which doesn’t
appear in short circuit current. Therefore,
the inrush current may affect the protection
functions which operate based on the
fundamental component of the measured
current. Accordingly, inrush restraint logic
is provided to prevent overcurrent
protection from mal-operation.
Furthermore, by recognition of the inrush
current in one phase, it is possible to set
the protection in a way that not only the
phase with the considerable inrush current,
but also the other phases of the
overcurrent protection are blocked for a
certain time. This is achieved by
cross-blocking feature integrated in the
IED.
The inrush restraint function has a
maximum inrush current setting. Once the
measuring current exceeds the setting, the
overcurrent protection will not be blocked
any longer.
Characteristic of direction element
The direction detection is performed by
determining the position of current vector
in directional characteristic. In other word,
it is done by comparing phase angle
between the fault current and the reference
voltage, Figure 1 illustrates the direction
detection characteristic for phase A
element.
Protection
9
Forward
UBC_Ref
ΦPh_Char
IA
IA-
0°
90°
Bisector
Figure 1 Direction detection characteristic of
overcurrent protection directional element
where:
ФPh_Char: The settable characteristic angle
The assignment of the applied measuring
values used in direction determination has
been shown in Table 1 for different types of
faults.
Table 1 Assignment of applied current and
reference voltage for directional element
Phase Current Voltage
A aI bcU
B bI caU
C cI abU
For three-phase short-circuit fault, without
any healthy phase, memory voltage values
are used to determine direction clearly if
the measured voltage values are not
sufficient. The detected direction is based
on the voltage of previously saved cycles.
Under voltage criteria
To prevent any malfunction of the
overcurrent element during reverse
charging of motors, the definite time stage
of overcurrent element is able to operate
only when at least one phase-to-phase
voltage falls less than the low voltage
settable threshold .The low voltage
element can be set for each definite time
stage.
Earth fault protection (50N, 51N, 67N)
The earth fault protection can be used to
clear phase to earth faults as system
back-up protection.
The protection provides following features:
Two definite time stages
One inverse time stage
11 kinds of the IEC and ANSI inverse
time characteristic curves as well as
optional user defined characteristic
Zero sequence directional element
Negative sequence directional element
is applied as a complement to zero
sequence directional element. It can be
enabled/disabled by setting
Each stage can be set individually as
directional/non-directional
Settable directional element
characteristic angle to satisfy the
different network conditions and
applications
Each stage can be set individually for
inrush restraint
Settable maximum inrush current
Inrush restraint function adopting 2nd
harmonic measured phase or earth
current (settable)
Protection
10
First definite stage and inverse time
stage can be set individually to alarm
or trip
VT secondary circuit supervision for
directional protection function. Once
VT failure happens, the directional
stage can be set to be blocked or to be
non-directional
Zero-sequence current is calculated by
summation of 3 phase currents or
measured from earth phase CT
selectable
Directional element
The earth fault protection adopts zero
sequence directional element which
compares the zero sequence system
quantities:
3I0, current is calculated from the sum
of the three phase currentss or
measured from earth phase CT
3U0, the voltage is used as reference voltage, if it is connected. Otherwise, 3U0, the zero sequence voltage, calculated from the sum of the three phase voltages
Figure 2 Direction detection characteristic of
zero sequence directional element
where:
Ф0_Char: The settable characteristic angle
For earth fault protection, users can
choose negative sequence directional
element as the complement of zero
sequence directional element. It can be
used in case of too low zero sequence
voltage due to some fault condition e.g. the
unfavorable zero-sequence. The negative
sequence directional element
characteristic is shown in Figure 3
.
Figure 3 Direction detection characteristic of
negative sequence directional element
where:
Ф2_Char: The settable characteristic angle
Furthermore, under the VT failure situation,
it can be set to block directional earth fault
protection or to apply non-directional earth
fault protection.
Inrush restraint function
The protection relay may detect large
magnetizing inrush currents during
transformer energizing. In addition to
considerably unbalanced fundamental
current, Inrush current comprises large
second harmonic current which doesn’t
Protection
11
appear in short circuit current. Therefore,
the inrush current may affect the protection
functions which operate based on the
fundamental component of the measured
current. Accordingly, inrush restraint logic
is provided to prevent earth fault protection
from mal-operation.
Since inrush current cannot be more than a
specified value, the inrush restraint
provides an upper current limit in which
blocking does not occur.
Neutral earth fault protection (50G, 51G)
The neutral earth fault protection focuses
on phase to earth faults. The measuring
current is the one from dedicated neutral
CT.
The protection provides following features:
Two definite time stages
One inverse time stage
11 kinds of IEC and ANSI inverse time
characteristic curves as well as
optional user defined characteristic
Each stage can be set individually to
alarm or trip
Neutral current is measured from
dedicated neutral CT
Sensitive earth fault protection (50Ns, 51Ns, 67Ns)
The function provides a high sensitive
earth fault protection for cables and high
impedance grounded or isolated systems
where single phase short circuit current is
made by capacitive current. Furthermore,
the function can operate with/without
selective tripping according to fault
direction.
Sensitive earth fault protection integrated
in the IED provides following features:
Two definite time stages
One inverse time stage
11 kinds of IEC and ANSI inverse time
characteristic curves as well as
optional user defined characteristic
Sensitive earth fault directional element
with 3U0/3I0-Φ principle
Sensitive earth fault directional element
with Cos Φ principle
Settable directional element
characteristic angle to satisfy the
different network conditions and
applications
Each stage can be set to be directional,
or non-directional independently
Each stage can be set individually to
alarm or trip
Displacement voltage can be checked
to increase function reliability
Dedicated sensitive CT
VT secondary circuit supervision for
directional protection function
For compensated-earthed system or high
resistance earthed system with outgoing
cable feeders, the directional protection is
provided during a single phase fault.
In general, for high impedance earthed
system, whenever a feeder has a high
capacitive current - normally one greater
than 10% of the current limited by the
Protection
12
neutral earthed impedance – a simple
sensitive earth fault relay is no longer
enough to give sensitive and selective
protection. In this case, the protection
system for the feeder consists of a
directional sensitive earth fault relay whose
threshold can be set to below the
capacitive current.
In order to discriminate forward and
reverse short circuits, the IED provides two
methods for sensitive earth fault direction
detection which should be utilized to cover
all network configurations according to the
type of grounding. The following
characteristic is possible for directional
detection:
Directional sensitive earth fault
detection based on U0/I0-Φ
measurement (see Figure 4)
Forward
Bisector
ΦNS_Char
I- NS
INS
3 RefU0_
0°
90°
Figure 4 Direction detection characteristic of the
sensitive earth fault directional element by
U0/I0-Φ
where:
ФNS_Char: The settable characteristic angle
Based on current vector component
(Cos Φ) measurement (see Figure 5).
In this way, the relay is sensitive to the
active residual current and insensitive
to the capacitive current
Figure 5 Direction detection characteristic of the
sensitive earth fault directional element by Cos
Φ
A sensitive current transformer is provided
to detect the small earth fault current (weak
zero sequence current) in isolated
networks or in networks with high earthed
impedance where the earth fault current is
extremely small.
Negative-sequence overcurrent protection (46)
Negative sequence (or phase unbalance)
protection is essentially provided for the
protection of generators, motors and
feeders against unbalanced loading that
may arise due to phase-to-phase faults. In
addition, it is useful in detecting
asymmetrical short circuits with
magnitudes lower than the maximum load
current, especially in delta side of the
transformers.
The protection provide following features:
Protection
13
Two definite time stages
One inverse time stage
11 kinds of IEC and ANSI inverse time
characteristic curves as well as
optional user defined characteristic
The first definite stage and inverse
stage can be set individually as alarm
or trip stage
Furthermore, this protection function may
be used to detect interruptions, faults and
polarity problems with CT.
Thermal overload protection (49)
The insulating material surrounding the
windings ages rapidly if the temperature
exceeds the design limit value. Thus, a
thermal protection function is required to
supplement the existing winding
temperature device. The thermal overload
protection estimates winding temperature
and thus prevents it from thermal
damaging.
The memorized thermal overload
protection operates based on an
approximate replica of the temperature rise
in the protected object caused by overload.
The thermal replica can be implemented
based on thermal models (Cold or Hot
Curve) of IEC60255-8 standard.
The thermal overload in the IED is
provided with one trip stage as well as one
alarm stage. It is possible to set the alarm
stage at a certain percentage of the setting
value applied at the trip stage.
The calculation is performed separately for
each phase based on fundamental
component.
Overload protection (50OL)
The IED supervises load flow in real time.
If each phase current is greater than the
dedicated setting for a set delay time, the
protection will issue alarm or tripping.
Overvoltage protection (59)
The overvoltage protection detects
abnormal network and machine high
voltage conditions. Overvoltage conditions
may occur possibly in the power system
during abnormal conditions such as
no-load, light load, or open line end on long
line. The protection can be used as open
line end detector or as system voltage
supervision normally.
The protection provides following features:
Two definite time stages
First stage can be set to alarm or trip
Measuring voltage between
phase-earth voltage and phase-phase
(selectable)
Three phase or single phase voltage
connection
Settable dropout ratio
Undervoltage protection (27)
The Undervoltage protection provides
protection against dangerous voltage
drops, especially for electric machines.
Protection
14
The protection function provides following
features:
Two definite time stages
First stage can be set to alarm or trip
Measuring voltage between
phase-earth voltage and phase-phase
selectable
Current criteria supervision
Circuit breaker aux. contact
supervision
VT secondary circuit supervision, the
under voltage function will be blocked
when VT failure happens
Settable dropout ratio
Displacement voltage protection (64)
The displacement voltage protection is
able to monitor the displacement voltage to
detect the earth fault in power system. It is
usually applied in non-solidly earthed
networks where the earth fault current is
limited.
The displacement voltage 3U0 can be
either directly measured from VT or
calculated based on connected three
phases to earth voltages. In the latter case,
the three voltages transformers input must
be connected in an earth-wye
configuration.
The protection provide following features:
Two definite time stages
One inverse time stage
4 kinds of IEC inverse time
characteristic curves as well as
optional user defined characteristic
The first definite stage and inverse
stage can be set to alarm or trip
Faulty phase discrimination
3U0 based on calculated summation of
3 phase voltage or measured injected
residual voltage
Breaker failure protection (50BF)
The circuit breaker failure protection is able
to detect a failure of the circuit breaker
during a fault clearance. It ensures fast
back-up tripping of surrounding breakers
by tripping relevant bus sections.
Once a circuit breaker operating failure
occurs on a feeder/transformer, the bus
section which the feeder/transformer is
connected with can be selectively isolated
by the protection. In addition a transfer trip
signal is issued to trip the remote end
circuit breaker of the feeder.
In the event of a circuit breaker failure with
a busbar fault, a transfer trip signal is
issued to trip the remote end circuit
breaker of the feeder.
The current criteria are in combination with
three phase currents, zero and negative
sequence current to achieve a higher
security.
The function can be set to give three phase
re-trip of the own breaker to avoid
unnecessary tripping of surrounding
breakers at an incorrect starting due to
mistakes during testing.
Two trip stages (local CB and
surrounding breaker tripping)
Protection
15
Transfer trip command to the remote
line end in second stage
Internal/ external initiation
Three phase CBF initiation for
sub-transmission system and
distribution system
Settable CB Aux contacts checking
Current criteria checking (including
phase current, zero and negative
sequence current)
Dead zone protection (50DZ)
The IED provides dead zone protection to
protect the area, between circuit breaker
and CT in the case that CB is open,
meaning dead zone. Therefore, by
occurrence of a fault in dead zone, the
short circuit current is measured by
protection relay while CB auxiliary contacts
indicate the CB is open.
Internal/ external initiation
Self-adaptive for bus side CT or line
side CT
When one bus side CT of feeder is applied,
once a fault occurs in the dead zone, the
IED trips the relevant busbar zone.
Tripping logic is illustrated in Figure 6.
When one line side CT is applied, when a
fault occurs in the dead zone, protection
relay sends a transfer trip to remote end
relay to isolate the fault. Tripping logic is
illustrated in Figure 7.
Figure 6 Tripping logic when applying bus side CT
Figure 7 Tripping logic when applying line side CT
Protection
16
Synchro-check and energizing check (25)
The synchro-check function checks voltages of the circuit breaker sides for synchronism conditions.
The synchronization function ensures the
stability of the network in three phase
reclosing condition. To do this, the two side
voltages of the circuit breaker are
compared in terms of magnitude, phase
angle and frequency differences.
Additionally, closing can be done safely in
conditions that at least one side of the CB
has dead voltage.
Available for automatic reclosing and
manual closing (internally or externally)
Based on voltage/ angle/ frequency
difference
Synchro-check conditions:
Synch-check
Energizing check, and synch-check if
energizing check failure
Override
Modes of energizing check:
Dead V4 and dead V3Ph
Dead V4 and live V3Ph
Live V4 and dead V3Ph
Synchro-check reference voltage supervision
If the automatic reclosing is set for
synchronization check or energizing check,
during the automatic reclosing period, the
synchronization condition of the voltages
between both sides of CB cannot be met,
an alarm will be issued after default time
delay.
Auto-reclosing (79)
For restoration of the normal service after a
fault an auto reclosing attempt is mostly
made for overhead lines. Experiences
show that about 85% of faults have
transient nature and will disappear after an
auto reclosing attempt is performed. This
means that the line can be re-energized in
a short period. The reconnection is
accomplished after a dead time via the
automatic reclosing function. If the fault is
permanent or short circuit arc has not
disappeared, the protection will re-trip the
breaker. Main features of the
auto-reclosing are as follows:
4 shots automatic reclosing
(selectable)
Individually settable dead time for each
shot
Internal/external AR initiation
Three phase AR operation
CB ready supervision
CB Aux. contact supervision
Cooperation with internal synch-check
function for reclosing command
Unbalanced current or voltage protection (46)
The purpose of the unbalance detection
scheme is to remove fuse operated a
capacitor bank from the network. This will
prevent damaging overvoltage across the
remaining capacitor units/elements where
the fuse operation occurs.
Protection
17
Unbalance detection scheme is set up to
signal an alarm upon an initial failure in a
bank. Upon subsequent critical failures, the
bank will be tripped from the connected
network. According to the used
unbalanced voltage/current, the IED
supports different protection schemes
mentioned in the typical connections.
The IED provides three analog channels to
monitor unbalance status. If only one
unbalanced channel is used, the other two
channels can be reserved. To avoid
mal-operation, breaker auxiliary contact is
necessary as a criterion.
Undercurrent protection (37)
Under current protection is used to prevent
reconnection of the charged capacitor
bank to energized network when a short
loss of supply voltage occurs.
Once under current protection operates,
the CB closing circuit will be interrupted
and reset after a certain time. Additionally,
time to resetting will be displayed on the
HMI.
Capacitor overload protection (50OL)
The current overload protection is provided
to protect the capacitor bank against the
faults due to overvoltage which leads to
dielectric breakdown.
The tripping and alarming capability are
provided and can be enabled or disabled
separately.
Load shedding function
The IED provides three kinds of load
shedding functions listed below.
Under frequency load shedding protection
The function monitors the network
abnormality by detection of frequency
reduction. When the system frequency falls
down to a threshold frequency with
following conditions satisfied, specified
load will be removed.
Up to four stages (L01 only)
Under voltage checking
Rate of frequency (df/dt) checking
CB position checking
Load current checking
VT secondary circuit supervision
Under voltage load shedding
This kind of load shedding is to prevent the
voltage collapse and uncontrolled loss of
load.
Low voltage load shedding is necessary
when the network is connected with a huge
system with vast power capacity. Under
this condition, “Low Frequency Load
Shedding Scheme” cannot work properly.
“Low Voltage Load Shedding Scheme"
would be a useful criterion whenever
Automatic Voltages Regulator (AVR) is out
of service or not equipped with following
conditions satisfied.
Up to four stages (L01 only)
Under voltage checking
Negative sequence voltage checking
Protection
18
Rate of voltage (du/dt) checking
CB position checking
Load current checking
VT secondary circuit supervision
Overload load shedding
The IED provides a load shedding function
based on the load current passing through
feeder. This function will be essential in
conditions that feeder is connected to a
huge network with constant frequency and
additional AVR is continuously used for
voltage regulation. In this case, load
shedding protection should be done based
on load current and monitoring of following
items
Up to four stages (L01 only)
Under voltage checking
Rate of voltage (du/dt) checking (in the
case of voltage connection)
Rate of frequency (df/dt) checking (in
the case of voltage connection)
VT secondary circuit supervision (in the
case of voltage connection)
Fast busbar protection scheme
The IED provides fast busbar protection
which is achieved based on operation with
GOOSE signals, it is able to block the
incoming feeder protection IED function by
reception of a defined GOOSE signals
from the outgoing feeder linked with the
same busbar.
The principle illustrated in the following
figure:
If the fault occurs on outgoing feeder C, the
protection IED C will trip and send block
messenger to IED A to block IED A
relevant protection function.
Figure 8 operation when fault on the feeder C
Protection
19
Figure 9 operation when fault on the Busbar
Once the fault located on the busbar, there
is not one protection IED of outgoing
feeder to trip and block the IED A. So the
IED A will trip and clear off the fault with
short time delay.
Secondary system supervision
Current transformer secondary
circuit supervision
Open or short circuited CT cores can
cause unwanted operation of some
protection functions such as earth fault
current and negative sequence current
functions.
Interruption of the CT secondary circuit is
detected based on zero-sequence current.
Once CT failure happens, each stage of
earth fault protection is blocked.
Voltage transformer secondary circuit supervision
A measured voltage failure, due to a
broken conductor or a short circuit fault in
the secondary circuit of voltage transformer,
may result in unwanted operation of the
protection functions which work based on
voltage criteria. VT failure supervision
function is provided to block these
protection functions and enable the backup
protection functions. The features of the
function are as follows:
Symmetrical/asymmetrical VT failure
detection
3-phase AC voltage MCB monitoring
1-phase AC voltage MCB monitoring
Zero and negative sequence current
monitoring
Applicable in solid grounded,
compensated or isolated networks
C
The prim
breaker
etc, can
modes,
Rem
aut
Loc
ope
for
Remote
by L/R
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LCD as
All con
under
requirem
program
(shown
For adv
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onmary appar
r, disconnec
n be control
mote mo
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cal mode:
eration on t
advanced I
e or local m
key on the
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an icon,’L
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interlock
ment. The
mmed in the
in Figure 11
vanced IED
m can be d
Blk Rem Access
3Ph CB Open
BI22(CB IN SERVICE )
BI23(SPRING NOT
CHARGED)
BI24(TR RELAY OPERATED
BI25(TRIP COIL FAULTY )
BI21(EXT. INTERLOCK)
ntroratuses, suc
ctor, earth d
lled through
de: By
stem
by dedic
the front pl
ED version
mode can b
e IED front
ode is indic
L’ or ‘R’.
ations are
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interlock lo
e software t
).
version, the
displayed o
CLOSE COM
Remote
D)
T_Inhibitio
Figure 11 Exa
ol
ch as circui
disconnecto
h IED in two
Substation
cated keys
late of IED
only
be switched
t plate. The
ated on the
supervised
ording the
ogic can be
tool by use
e single line
on the LCD
MMAND
on
ample of CB
20
it
or,
o
n
s
D,
d
e
e
d
e
e
er
e
D
(show
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discon
Figu
AND
control interl
wn in Figure
te the sta
nnector and
ure 10 Examp
display
Interlo
AND
lock logic dia
e 11), whic
atus of cir
d other in re
ple of Single l
yed on the LC
ock On
CB Clo
agram
ch is able
rcuit break
eal time.
line diagram
CD
lose
to
ker,
Monitoring
21
Phase-sequence of voltage and current supervision
The phase-sequence of three phase
voltage and current are monitored in the
normal condition to determine that the
secondary circuit of CT or VT is connected
with IED correctly.
3I0 polarity supervision
The IED compare the magnitude and
phase angle of the calculated zero
sequence current with the measured one
to determine that the polarity is connected
in a right way.
The third harmonic of voltage supervision
If the third harmonic voltage is excessive,
the alarm without blocking protection will
be given with delay time for checking of the
secondary circuit of voltage transformer.
Auxiliary contacts of circuit breaker supervision
Current flowing through the transmission
line and connected CB aux. contacts are
monitored in phase segregated. Therefore,
the conflict condition is reported as alarm.
For example, If CB aux. contacts indicate
that CB is open in phase A and at the same
time flowing current is measured in this
phase, related alarm is reported.
Broken conductor detection
The main purpose of the broken conductor
detection function is to detect the broken
conductors on protected transmission lines
and cables. Detection can initiate an alarm
or tripping.
Self-supervision
All modules can perform self-
supervision to its key hardware
components and program, as soon as
energizing. Parts of the modules are
self-supervised in real time. All internal
faults or abnormal conditions will
initiate an alarm. The fatal faults among
them will result in the whole IED
blocked
The sampled data from the redundant
A/D sampling channels compare with
each other in real time. If the difference
exceeds the specified threshold, it will
be considered as analog input channel
fault and the protection will be blocked
immediately
CPU module and communication
module perform real time inter-
-supervision. Therefore communication
interruption between them is detected
and related alarm will be given
CRC checks for the setting, program
and configuration, etc.
Fault locator
The built-in fault locator is an impedance
measuring function giving the distance
from the IED measuring location to the
fault position in km. The IED reports fault
location after the IED tripping.
Communication
22
Station communication
Overview
The IED is able to connect to one or
more substation level systems or
equipments simultaneously, through the
communication ports with communica-
-tion protocols supported. (Shown in
Figure 12)
Front communication port
There is a serial RS232 port on the front
plate of all the IEDs. Through this port,
the IED can be connected to the
personal computer for setting, testing,
and configuration using the dedicated
Sifang software tool.
RS485 communication ports
Up to 2 isolated electrical RS485
communication ports are provided to
connect with substation automation
system. These two ports can work in
parallel for IEC60870-5-103.
Ethernet communication ports
Up to 3 electrical or optical Ethernet
communication ports are provided to
connect with substation automation system.
These two out of three ports can work in
parallel for protocol, IEC61850 or
IEC60870-5-103.
Figure 12 Connection example for multi-networks of station automation system
Note: All four ports can work in parallel
Communication protocol
The IED supports station communication
with IEC 61850-8 and IED60870-5-103
protocols.
By means of IEC61850, GOOSE peer-
-to-peer communication make it possible
that bay IEDs can exchange information to
each other directly, and a simple
master-less system can be set up for bay
and system interlocking and other
interactive function.
Time synchronization port
Software Tools
23
All IEDs feature a permanently integrated
electrical time synchronization port. It can
be used to feed timing telegrams in IRIG-B
or pulse format into the IEDs via time
synchronization receivers. The IED can
adapt the second or minute pulse in the
pulse mode automatically.
Meanwhile, SNTP network time synchro-
-nization can be applied.
Figure 13 illustrates the optional time
synchronization modes.
Figure 13 Time synchronizing modes
So
A user-
enginee
and m
function
cycle of
Mod
para
oft-friendly sof
ering, settin
monitoring.
nalities requ
f protection
dification, im
ameter sets
twaftware tool
ng, disturba
It provid
uired throug
IEDs. Its fe
Figure 14
mport and ex
s sorted by p
areis offered f
ance analys
es versat
ghout the l
eatures are a
Binary inputs
xport of
protection
e to
24
for
sis
tile
ife
as
follow
F
i
a
m
s and binary
f
(
oolsws:
For advance
nputs and b
assigned to
modules (sh
outputs edit
functions wi
(shown in Fi
ls ed IED vers
binary outpu
the require
hown in Figu
window
th setting lo
igure 15)
sion, the bin
uts can be
ed function
ure 14)
ogicality che
nary
eck
F
fu
P
fa
For advance
unction inte
Precise fault
ault records
S
ed IED vers
erlock logic c
t analysis: v
s in curves o
oft
Figure
ion, the con
can be
Figure 16
visualization
over time, c
twa
25
e 15 setting ed
ntrol
Interlock log
n of
circle
are
dit window
programm
(shown in
ic edit windo
diagrams
and data
e To
med accord
n Figure 15
w
s, vector dia
sheet (sho
Too
ding require
)
agrams, bar
own in Figure
ols
ments
r charts
e 17)
So
Inte
inco
Gra
char
dire
Pas
oft
lligent settin
orrect input
phical visua
racteristics
ct manipula
sword-prote
twa
Figure 17 D
ng checks r
alization of
and zone d
ation of the
ected acces
are
Disturbance r
rule out
diagrams wi
curves
ss for
e to
26
record wavefo
th
d
c
(
T
d
p
ools
orm analysis
different job
commission
(authorized
Testing and
decisive sup
phase
ls
window
s such as p
ing and con
staff only)
diagnostic
pport in the
parameter s
ntrolling
functions –
commissio
etting,
–
ning
Hardware
27
Front plate
The whole front plate is divided into zones,
each of them with a well-defined
functionality:
Figure 18 The option 1 of view of IED front plate
1 Liquid crystal display (LCD), alpha-
-numeric display only
2 8 LEDs
3 Navigation keys
4 Reset key
5 Quit key
6 Set key
7 RS232 communication port
Figure 19 The option 2 of view of IED front plate
for advanced IED version only
1 Liquid crystal display (LCD), alpha-
-numeric and graphic display
2 16 LEDs
3 Quit key
4 Reset key
5 Set key
6 Navigation keys
7 RJ45 Ethernet communication port
8 R/L Remote/Local control switch key
9 LCD display switch key
10 Controlled objects select key
11 Control operation confirm key
12 Open key
13 Close key
Hardware
28
Modules
Analogue Input Module (AIM)
The analogue input module is used to
galvanically separate and transform the
secondary currents and voltages
generated by the measuring transformers.
3 dedicated high accurate current
transformers (optional) are used for
metering.
CPU module (CPU)
The CPU module handles all protection
functions and logic, hardware
self-supervision and performs
communication and information exchange
between the protection system and
external equipments such as HMI, PC,
monitor, control system, substation
automation system, engineer station, RTU
and printer, etc. Additionally, the CPU
module transmits remote metering, remote
signaling, SOE, event reports and record
data. The module also provides binary
inputs, synchronization and communica-
-tion ports.
The pulse, IRIG-B or SNTP mode can be
applied for time synchronization.
According to requirement, up to 2 isolated
electrical or optical Ethernet ports (optical
Ethernet ports optional) and up to 2 RS485
serial communication port can be provided
to meet the demands of different
substation automation system and RTU at
the same time.
There are 7 binary input channels (DC24V)
in the CPU module for standard version.
There are 3 binary input channels (DC24V)
in the CPU module for advanced version.
Direct binary Output Module (DOM)
This module is used to provide fast tripping
outputs and initiating outputs for protection
functions, and signaling output, for
standard version only.
10 binary output relays with 10 contacts in
5 groups are provided in the FOM of
standard version.
Direct binary Input & Output module (DIO)
In this module, the fast binary inputs are
used to connect with the signals and
alarms. The fast binary outputs are used
for the tripping outputs and initiating
outputs for protection functions, or
signaling output.
4 binary inputs and 7 binary output relays
are provided in this module of standard
version.
5 binary inputs and 7 binary output relays
are provided in this module of advanced
version.
Binary Input & Output module (BIO)
In this module, the output contacts are
used for controlling and signaling outputs
mainly. The binary inputs are used to
connect with the input signals and alarms.
7 binary inputs and 9 binary output relays
have been provided in this module of
standard version.
5 binary inputs and 8 binary output relays
are provided in this module of advanced
version.
Power Supply Module (PSM)
The power supply module is used to
provide the correct internal voltages and
full isolation between the terminal and the
Hardware
29
battery system. The module of standard
version provides 9 binary input channels.
And the module of advanced version
provides 10 binary input channels as well.
Hardware
30
Dimension
A
E
Figure 20 Case of CSC211 protection IED
Table 2 Dimension of the IED
Legend A B C D E F
Dimension (mm) 177 231 193.8 220.8 149 193.5
Figure 21 Cutout for flush mounting on the panel
Table 3 Dimension of the cutout
Legend A B C D E
Dimension (mm) 199.5 213.5 101.6 156 6.5
Connection
31
A. Typical rear terminal diagram of standard version
Connection
32
B. Typical rear terminal diagram of advanced version
Connection
33
Connection
34
C. Typical analogue input connection for incoming or outgoing feeder protection or line backup protection
Figure 22 Application of feeder protection to measure three phase and earth currents
Figure 23 Application of feeder protection to measure three phase and earth currents and three phase
voltages (bus side)
Connection
35
Figure 24 Application of feeder protection to measure three phase and earth currents and three phase
voltages (line side)
Connection
36
Figure 25 Application of feeder protection to measure three phase and earth currents and single phase
voltage (Ph-Ph) (bus side)
Connection
37
Figure 26 Application of feeder protection to measure three phase and earth currents and single phase
voltage (Ph-E) (bus side)
Connection
38
Figure 27 Application of feeder protection to measure three phase currents, earth current, and
sensitive earth current
Connection
39
Figure 28 Application of feeder protection to measure three phase currents, earth current and sensitive
earth current, and three phase voltages (bus side)
Connection
40
Figure 29 Application of feeder protection to measure three phase currents, earth current and sensitive
earth current, and three phase voltages (line side)
Connection
41
Figure 30 Application of feeder protection to measure three phase currents, earth current and sensitive
earth current, and single phase voltage (Ph-Ph) (bus side)
Connection
42
Figure 31 Application of feeder protection to measure three phase currents, earth current, and
sensitive earth current, and single phase voltage (Ph-E) (bus side)
Connection
43
D. Typical analogue input connection for transformer backup protection
IA
IB
IC
IN
AIM2
ABC
* * *
I01
I03
I05
I07
I02
I04
I06
I08
I01
AIM1
I02I1
*
Figure 32 Application of transformer backup protection to measure three phase currents, earth current,
and neutral current
Connection
44
Figure 33 Application of transformer backup protection to measure three phase currents, earth current
and neutral current, and three phase voltages (bus side)
Connection
45
Figure 34 Application of transformer backup protection to measure three phase currents, earth current
and neutral current, and three phase voltages (line side)
Connection
46
Figure 35 Application of transformer backup protection to measure three phase currents, earth current
and neutral current, and single phase voltage (Ph-Ph) (bus side)
Connection
47
IA
IB
IC
IN
AIM2
ABC
* * *
I01
I03
I05
I07
I02
I04
I06
I08
I01
AIM1
I02 I1
UB
UA
UC
UN
U01
U02
U03
U04
AIM2
*
Figure 36 Application of transformer backup protection to measure three phase currents, earth current
and neutral current, and single phase voltage (Ph-E) (bus side)
Connection
48
E. Typical analogue input connection for synch-check function
Figure 37 Typical connection for synch-check on bus coupler applications
Connection
49
Figure 38 Typical connection for synch-check and feeder current protection
Connection
50
F. Typical analogue input connection for capacitor bank protection
ABC
Capacitor bank
IC1
IC2
IC3
AIM1
*
*
* I03
I05
I07
I04
I06
I08
Figure 39 Typical connection for capacitor bank unbalanced current protection with three current
inputs
Figure 40 Typical connection for capacitor bank unbalanced voltage protection with three voltage
inputs
Connection
51
Figure 41 Typical connection for capacitor bank unbalanced current protection with one current input
Figure 42 Typical connection for capacitor bank unbalanced voltage protection with one voltage input
Connection
52
Figure 43 Unbalanced current detection for
grounded capacitor bank
Figure 44 Neutral current differential protection
for grounded Split-Wye capacitor bank
Figure 45 Neutral current protection for
ungrounded split-Wye capacitor bank
Figure 46 Three unbalanced currents detection
for capacitor bank
Figure 47 Neutral voltage unbalanced protection
for unrounded Wye capacitor bank
Figure 48 Neutral voltage unbalanced detection
for ungrounded split-Wye capacitor bank
Connection
53
Figure 49 Summation of Intermediate tap-point
voltage for grounded Wye capacitor bank
Figure 50 Neutral voltage unbalance detection by
3VTs for unrounded Wye capacitor bank
Figure 51 Neutral voltage protection for
ungrounded split-Wye capacitor bank
Figure 52 Three unbalanced voltages detection
for Capacitor Bank
G. Typical analogue input connection for Load shedding function
CSC-211 CSC-211 CSC-211 CSC-211 CSC-211
Figure 53 Typical connection for load shedding function
Technical data
54
Frequency
Item Standard Data
Rated system frequency IEC 60255-1 50 Hz or 60Hz
Internal current transformer
Item Standard Data
Rated current Ir IEC 60255-1 1 or 5 A
Nominal current range 0.05 Ir to 30 Ir
Nominal current range of sensitive
CT
0.005 to 1 A
Power consumption (per phase) ≤ 0.1 VA at Ir = 1 A;
≤ 0.5 VA at Ir = 5 A
≤ 0.5 VA for sensitive CT
Thermal overload capability IEC 60255-1
IEC 60255-27
100 Ir for 1 s
4 Ir continuous
Thermal overload capability for
sensitive CT
IEC 60255‐27
DL/T 478‐2001
100 A for 1 s
3 A continuous
Internal voltage transformer
Item Standard Data
Rated voltage Vr (ph-ph) IEC 60255-1 100 V /110 V
Nominal range (ph-e) 0.4 V to 120 V
Power consumption at Vr = 110 V IEC 60255-27
DL/T 478-2001
≤ 0.1 VA per phase
Thermal overload capability
(phase-neutral voltage)
IEC 60255-27
DL/T 478-2001
2 Vr, for 10s
1.5 Vr, continuous
Auxiliary voltage
Item Standard Data
Rated auxiliary voltage Uaux IEC60255-1 100 to 125V
195 to 250V
Permissible tolerance IEC60255-1 ±%20 Uaux
Power consumption at quiescent
state
IEC60255-1 ≤ 50 W per power supply module
Technical data
55
Power consumption at maximum
load
IEC60255-1 ≤ 60 W per power supply module
Inrush Current IEC60255-1 T ≤ 5 ms/I≤ 35 A
Binary inputs
Item Standard Data
Input voltage range IEC60255-1 110/125 V
220/250 V
Threshold1: guarantee
operation
IEC60255-1 154V, for 220/250V
77V, for 110V/125V
Threshold2: uncertain operation IEC60255-1 132V, for 220/250V ;
66V, for 110V/125V
Response time/reset time IEC60255-1 Software provides de-bounce
time
Power consumption, energized IEC60255-1 Max. 0.5 W/input, 110V
Max. 1 W/input, 220V
Binary outputs
Item Standard Data
Max. system voltage IEC60255-1 250V /~
Current carrying capacity IEC60255-1 5 A continuous,
30A,200ms ON, 15s OFF
Making capacity IEC60255-1 1100 W( ) at inductive load with
L/R>40 ms
1000 VA(AC)
Breaking capacity IEC60255-1 220V , 0.15A, at L/R≤40 ms
110V , 0.30A, at L/R≤40 ms
Mechanical endurance, Unloaded IEC60255-1 50,000,000 cycles (3 Hz switching
frequency)
Mechanical endurance, making IEC60255-1 ≥1000 cycles
Mechanical endurance, breaking IEC60255-1 ≥1000 cycles
Specification state verification IEC60255-1
IEC60255-23
IEC61810-1
UL/CSA、TŰV
Technical data
56
Contact circuit resistance
measurement
IEC60255-1
IEC60255-23
IEC61810-1
30mΩ
Open Contact insulation test (AC
Dielectric strength)
IEC60255-1
IEC60255-27
AC1000V 1min
Maximum temperature of parts and
materials
IEC60255-1 55
Front communication port
Item Data
Number 1
Connection Isolated, RS232; front panel,
9-pin subminiature connector, for software tools
Communication speed 9600 baud
Max. length of communication cable 15 m
RS485 communication port
Item Data
Number 1
Connection 2-wire connector
Rear port in communication module
Max. length of communication cable 1.0 km
Test voltage 500 V AC against earth
For IEC 60870-5-103 protocol
Communication speed Factory setting 9600 baud,
Min. 1200 baud, Max. 19200 baud
Ethernet communication port
Item Data
Electrical communication port
Number 0 to 3
Connection RJ45 connector
Rear port in communication module
Max. length of communication cable 100m
For IEC 61850 protocol
Technical data
57
Communication speed 100 Mbit/s
For IEC 60870-5-103 protocol
Communication speed 100 Mbit/s
Time synchronization
Item Data
Mode Pulse mode
IRIG-B signal format IRIG-B000
Connection 2-wire connector
Rear port in communication module
Voltage levels differential input
Environmental influence
Item Data
Recommended permanent operating temperature -10 °C to +55°C
(Legibility of display may be impaired above
+55 °C /+131 °F)
Storage and transport temperature limit -25°C to +70°C
Permissible humidity 95 % of relative humidity
IED design
Item Data
Case size 4U×1/2 19inch
Weight ≤ 5kg
Technical Data
58
Product safety-related Tests
Item Standard Data
Over voltage category IEC60255-27 Category III
Pollution degree IEC60255-27 Degree 2
Insulation IEC60255-27 Basic insulation
Degree of protection (IP) IEC60255-27
IEC 60529
Front plate: IP40
Rear, side, top and bottom: IP 30
Power frequency high voltage
withstand test
IEC 60255-5
EN 60255-5
ANSI C37.90
GB/T 15145-2001
DL/T 478-2001
2KV, 50Hz
2.8kV
between the following circuits:
auxiliary power supply
CT / VT inputs
binary inputs
binary outputs
case earth
500V, 50Hz
between the following circuits:
Communication ports to case
earth
time synchronization terminals
to case earth
Impulse voltage test IEC60255-5
IEC 60255-27
EN 60255-5
ANSI C37.90
GB/T 15145-2001
DL/T 478-2001
5kV (1.2/50μs, 0.5J)
If Ui≥63V
1kV if Ui<63V
Tested between the following
circuits:
auxiliary power supply
CT / VT inputs
binary inputs
binary outputs
case earth
Note: Ui: Rated voltage
Insulation resistance IEC60255-5
IEC 60255-27
EN 60255-5
ANSI C37.90
GB/T 15145-2001
≥ 100 MΩ at 500 V
Technical Data
59
DL/T 478-2001
Protective bonding resistance IEC60255-27 ≤ 0.1Ω
Fire withstand/flammability IEC60255-27 Class V2
Electromagnetic immunity tests
Item Standard Data
1 MHz burst immunity test IEC60255-22-1
IEC60255-26
IEC61000-4-18
EN 60255-22-1
ANSI/IEEE C37.90.1
Class III
2.5 kV CM ; 1 kV DM
Tested on the following circuits:
auxiliary power supply
CT / VT inputs
binary inputs
binary outputs
1 kV CM ; 0 kV DM
Tested on the following circuits:
communication ports
Electrostatic discharge IEC 60255-22-2
IEC 61000-4-2
EN 60255-22-2
Level 4
8 kV contact discharge;
15 kV air gap discharge;
both polarities; 150 pF; Ri = 330 Ω
Radiated electromagnetic field
disturbance test
IEC 60255-22-3
EN 60255-22-3
Frequency sweep:
80 MHz – 1 GHz; 1.4 GHz – 2.7 GHz
spot frequencies:
80 MHz; 160 MHz; 380 MHz; 450
MHz; 900 MHz; 1850 MHz; 2150
MHz
10 V/m
AM, 80%, 1 kHz
Radiated electromagnetic field
disturbance test
IEC 60255-22-3
EN 60255-22-3
Pulse-modulated
10 V/m, 900 MHz; repetition rate
200 Hz, on duration 50 %
Electric fast transient/burst immunity
test
IEC 60255-22-4,
IEC 61000-4-4
EN 60255-22-4
ANSI/IEEE C37.90.1
Class A, 4KV
Tested on the following circuits:
auxiliary power supply
CT / VT inputs
binary inputs
binary outputs
Technical Data
60
Class A, 1KV
Tested on the following circuits:
communication ports
Surge immunity test IEC 60255-22-5
IEC 61000-4-5
4.0kV L-E
2.0kV L-L
Tested on the following circuits:
auxiliary power supply
CT / VT inputs
binary inputs
binary outputs
500V L-E
Tested on the following circuits:
communication ports
Conduct immunity test IEC 60255-22-6
IEC 61000-4-6
Frequency sweep: 150 kHz – 80
MHz
spot frequencies: 27 MHz and 68
MHz
10 V
AM, 80%, 1 kHz
Power frequency immunity test IEC60255-22-7 Class A
300 V CM
150 V DM
Power frequency magnetic field test IEC 61000-4-8 Level 4
30 A/m cont. / 300 A/m 1 s to 3 s
100 kHz burst immunity test IEC61000-4-18 2.5 kV CM ; 1 kV DM
Tested on the following circuits:
auxiliary power supply
CT / VT inputs
binary inputs
binary outputs
1 kV CM ; 0 kV DM
Tested on the following circuits:
communication ports
DC voltage interruption test
Item Standard Data
DC voltage dips IEC 60255-11 100% reduction 20 ms
Technical Data
61
60% reduction 200 ms
30% reduction 500 ms
DC voltage interruptions IEC 60255-11 100% reduction 5 s
DC voltage ripple IEC 60255-11 15%, twice rated frequency
DC voltage gradual shut–down
/start-up
IEC 60255-11 60 s shut down ramp
5 min power off
60 s start-up ramp
DC voltage reverse polarity IEC 60255-11 1 min
Electromagnetic emission test
Item Standard Data
Radiated emission IEC60255-25
EN60255-25
CISPR22
30MHz to 1GHz ( IT device may up
to 5 GHz)
Conducted emission IEC60255-25
EN60255-25
CISPR22
0.15MHz to 30MHz
Mechanical tests
Item Standard Data
Sinusoidal Vibration response
test
IEC60255-21-1
EN 60255-21-1
Class 1
10 Hz to 60 Hz: 0.075 mm
60 Hz to 150 Hz: 1 g
1 sweep cycle in each axis
Relay energized
Sinusoidal Vibration endurance
test
IEC60255-21-1
EN 60255-21-1
Class 1
10 Hz to 150 Hz: 1 g
20 sweep cycle in each axis
Relay non-energized
Shock response test IEC60255-21-2
EN 60255-21-2
Class 1
5 g, 11 ms duration
3 shocks in both directions of 3 axes
Relay energized
Shock withstand test IEC60255-21-2
EN 60255-21-2
Class 1
15 g, 11 ms duration
3 shocks in both directions of 3 axes
Technical Data
62
Relay non-energized
Bump test IEC60255-21-2 Class 1
10 g, 16 ms duration
1000 shocks in both directions of 3
axes
Relay non-energized
Seismic test IEC60255-21-3 Class 1
X-axis 1 Hz to 8/9 Hz: 7.5 mm
X-axis 8/9 Hz to 35 Hz :2 g
Y-axis 1 Hz to 8/9 Hz: 3.75 mm
Y-axis 8/9 Hz to 35 Hz :1 g
1 sweep cycle in each axis,
Relay energized
Climatic tests
Item Standard Data
Cold test - Operation IEC60255-27
IEC60068-2-1
-10°C, 16 hours, rated load
Cold test – Storage IEC60255-27 IEC60068-2-1 -25°C, 16 hours
Dry heat test – Operation [IEC60255-27
IEC60068-2-2
+55°C, 16 hours, rated load
Dry heat test – Storage IEC60255-27
IEC60068-2-2
+70°C, 16 hours
Change of temperature IEC60255-27
IEC60068-2-14
Test Nb, figure 2, 5 cycles
-10°C / +55°C
Damp heat static test IEC60255-27
IEC60068-2-78
+40°C, 93% r.h. 10 days, rated load
Damp heat cyclic test IEC60255-27
IEC60068-2-30
+55°C, 93% r.h. 6 cycles, rated load
CE Certificate
Item Data
EMC Directive EN 61000-6-2 and EN61000-6-4 (EMC Council
Directive 2004/108/EC)
Low voltage directive EN 60255-27 (Low-voltage directive 2006/95 EC).
Technical Data
63
Functions
NOTE: Ir: CT rated secondary current, 1A or 5A;
Overcurrent protection (ANSI 50, 51, 67)
Item Rang or Value Tolerance
Definite time characteristics
Current 0.08 Ir to 20.00 Ir ≤ ±3% setting or ±0.02Ir
Time delay 0.00 to 60.00s, step 0.01s ≤ ±1% setting or +40ms, at 200% operating setting
Reset time approx. 40ms
Reset ratio Approx. 0.95 at I/In ≥ 0.5
Inverse time characteristics
Current 0.08 Ir to 20.00 Ir ≤ ±3% setting or ±0.02Ir
IEC standard Normal inverse;
Very inverse;
Extremely inverse;
Long inverse
≤ ±5% setting + 40ms, at 2
<I/ISETTING < 20, in accordance
with IEC60255-151
ANSI Inverse;
Short inverse;
Long inverse;
Moderately inverse;
Very inverse;
Extremely inverse;
Definite inverse
≤ ±5% setting + 40ms, at 2
<I/ISETTING < 20, in
accordance with ANSI/IEEE
C37.112,
user-defined characteristic T=
_
B k ≤ ±5% setting + 40ms, at 2
<I/ISETTING < 20, in accordance
with IEC60255-151
Time factor of inverse time, A 0.005 to 200.0s, step 0.001s
Delay of inverse time, B 0.000 to 60.00s, step 0.01s
Index of inverse time, P 0.005 to 10.00, step 0.005
set time Multiplier for step n: k 0.05 to 999.0, step 0.01
Minimum operating time 20ms
Maximum operating time 100s
Reset mode instantaneous
Reset time approx. 40ms,
Directional element
Operating area range 170° ≤ ±3°, at phase to phase
Technical Data
64
Characteristic angle 0° to 90°, step 1° voltage >1V
Earth fault protection (ANSI 50N, 51N, 67N)
Item Rang or value Tolerance
Definite time characteristic
Current 0.08 Ir to 20.00 Ir ≤ ±3% setting or ±0.02Ir
Time delay 0.00 to 60.00s, step 0.01s ≤ ±1% setting or +40ms, at 200% operating setting
Reset time approx. 40ms
Reset ratio Approx. 0.95 at I/Ir ≥ 0.5
Inverse time characteristics
Current 0.08 Ir to 20.00 Ir ≤ ±3% setting or ±0.02Ir
IEC standard Normal inverse;
Very inverse;
Extremely inverse;
Long inverse
IEC60255-151
≤ ±5% setting + 40ms, at 2
<I/ISETTING < 20
ANSI Inverse;
Short inverse;
Long inverse;
Moderately inverse;
Very inverse;
Extremely inverse;
Definite inverse
ANSI/IEEE C37.112,
≤ ±5% setting + 40ms, at 2
<I/ISETTING < 20
user-defined characteristic T=
_
B k IEC60255-151
≤ ±5% setting + 40ms, at 2
<I/ISETTING < 20
Time factor of inverse time, A 0.005 to 200.0s, step
0.001s
Delay of inverse time, B 0.000 to 60.00s, step 0.01s
Index of inverse time, P 0.005 to 10.00, step 0.005
set time Multiplier for step n: k 0.05 to 999.0, step 0.01
Minimum operating time 20ms
Maximum operating time 100s
Reset mode instantaneous
Reset time approx. 40ms
Directional element
Operating area range of zero
sequence directional element 160°
≤ ±3°, at 3U0≥1V
Characteristic angle 0° to 90°, step 1°
Technical Data
65
Operating area range of negative
sequence directional element 160°
≤ ±3°, at 3U2≥2V
Characteristic angle 50° to 90°, step 1°
Non-directional neutral earth fault protection (ANSI 50G, 51G)
Item Rang or value Tolerance
Definite time characteristic
Current 0.08 Ir to 20.00 Ir ≤ ±3% setting or ±0.02Ir
Time delay 0.00 to 60.00s, step 0.01s ≤ ±1% setting or +40ms, at 200% operating setting
Reset time approx. 40ms
Reset ratio Approx. 0.95 at I/Ir ≥ 0.5
Inverse time characteristics
Current 0.08 Ir to 20.00 Ir ≤ ±3% setting or ±0.02Ir
IEC standard Normal inverse;
Very inverse;
Extremely inverse;
Long inverse
≤ ±5% setting + 40ms, at 2
<I/ISETTING < 20, in accordance with
IEC60255-151
ANSI Inverse;
Short inverse;
Long inverse;
Moderately inverse;
Very inverse;
Extremely inverse;
Definite inverse
≤ ±5% setting + 40ms, at 2
<I/ISETTING < 20, in accordance
with ANSI/IEEE C37.112,
user-defined characteristic T=
_
B k ≤ ±5% setting + 40ms, at 2
<I/ISETTING < 20, in accordance with
IEC60255-151
Time factor of inverse time, A 0.005 to 200.0s, step
0.001s
Delay of inverse time, B 0.000 to 60.00s, step 0.01s
Index of inverse time, P 0.005 to 10.00, step 0.005
set time Multiplier for step n: k 0.05 to 999.0, step 0.01
Minimum operating time 20ms
Maximum operating time 100s
Reset mode instantaneous
Reset time approx. 40ms
Characteristic angle 0° to 90°, step 1°
Technical Data
66
Sensitive/normal earth fault protection (ANSI 50Ns, 51Ns, 67Ns)
Item Range or value Tolerance
Definite time characteristic
Current from sensitive CT input 0.005 to 1.000 A , step 0.001 A ≤ ±3 % setting value or 1 mA
Current from neutral CT input 0.08 Ir to 20.00 Ir ≤ ±3 % setting value or 0.02 Ir
Time delay 0.00 to 60.00, step 0.01 s ≤ ±1.5 % setting value or +40
ms, at 200% operating setting
Reset ratio Approx. 0.95 when I/In ≥ 0.5
Reset time Approx. 40 ms
Inverse time characteristics
Current from sensitive input 0.005 to 1.000 A , step 0.001 A ≤ ±3 % setting value or 1 mA
Current from normal input 0.08 Ir to 20.00 Ir ≤ ±3 % setting value or 0.02 Ir
IEC standard Normal inverse;
Very inverse;
Extremely inverse;
Long inverse
≤ ±5% setting + 40ms, at 2
<I/ISETTING < 20, in accordance
with IEC60255-151
ANSI Inverse;
Short inverse;
Long inverse;
Moderately inverse;
Very inverse;
Extremely inverse;
Definite inverse
≤ ±5% setting + 40ms, at 2
<I/ISETTING < 20, in
accordance with ANSI/IEEE
C37.112,
user-defined characteristic
T=A
i
I_SETP 1
B k
≤ ±5% setting + 40ms, at 2
<I/ISETTING < 20, in accordance
with IEC60255-151
Time factor of inverse time, A 0.005 to 200.0s, step 0.001s
Delay of inverse time, B 0.000 to 60.00s, step 0.01s
Index of inverse time, P 0.005 to 10.00, step 0.005
set time Multiplier for step n: k 0.05 to 999.0, step 0.01
Minimum operating time 20ms
Maximum operating time 100s
Reset mode instantaneous
Reset time approx. 40ms
Directional element for sensitive earth-fault protection
principles I cos Φ
Φ (V0 / I0)”
Technical Data
67
Direction measurement IE and VE measured
or 3V0 calculated
3U0 Minimum voltage threshold 2.00 to 100.00 V, step 0.01 V ≤ ±3 % setting for measured
voltage;
≤ ±5 % setting for calculated
voltage
Characteristic angle Φ_SEFChar 0.0° to 90.0°, step 1° ≤ ±3°
Operating area range 160° ≤ ±3°
Negative sequence current protection (ANSI 46)
Item Rang or Value Tolerance
Definite time characteristic
Current 0.08 Ir to 20.00 Ir ≤ ±3% setting value or ±0.02Ir
Time delay 0.00 to 60.00, step 0.01 s ≤ ±1% setting or +40ms, at 200% operating setting
Reset time ≤ 40 ms
Reset ratio Approx. 0.95 for I2 /Ir > 0.5
Inverse time characteristics
Current 0.08 Ir to 20.00 Ir ≤ ±3% setting or ±0.02Ir
IEC standard Normal inverse;
Very inverse;
Extremely inverse;
Long inverse
≤ ±5% setting + 40ms, at 2
<I/ISETTING < 20, in accordance
with IEC60255-151
ANSI Inverse;
Short inverse;
Long inverse;
Moderately inverse;
Very inverse;
Extremely inverse;
Definite inverse
≤ ±5% setting + 40ms, at 2
<I/ISETTING < 20, in
accordance with ANSI/IEEE
C37.112,
user-defined characteristic T=
Ai
I_SETP 1
B k ≤ ±5% setting + 40ms, at 2
<I/ISETTING < 20, in accordance
with IEC60255-151
Time factor of inverse time, A 0.005 to 200.0s, step 0.001s
Delay of inverse time, B 0.000 to 60.00s, step 0.01s
Index of inverse time, P 0.005 to 10.00, step 0.005
set time Multiplier for step n: k 0.05 to 999.0, step 0.01
Minimum operating time 20ms
Maximum operating time 100s
Technical Data
68
Reset time approx. 40ms
Inrush restraint function
Item Range or value Tolerance
Upper function limit
Max current for inrush restraint
0.25 Ir to 20.00 Ir ≤ ±3% setting value or ±0.02Ir
Ratio of 2nd harmonic current to
fundamental component current
0.10 to 0.45, step 0.01
Cross-block (IL1, IL2, IL3)
(settable time)
0.00s to 60.00 s, step 0.01s ≤ ±1% setting or +40ms
Thermal overload protection (ANSI-49)
Item Rang or Value Tolerance
Current 0.1 Ir to 5.00 Ir ≤ ±3% setting or ±0.02Ir
Thermal heating time constant 1 to 9999 s
Thermal cooling time constant 1 to 9999 s
IEC cold curve
22
2
ln
II
It
eq
eq IEC 60255–8,
≤ ±5% setting or +40ms
IEC hot curve
22
22
ln
II
IIt
eq
Peq
IEC 60255–8,
≤ ±5% setting or +40ms
Breaker failure protection (ANSI 50 BF)
Item Rang or Value Tolerance
phase current
Negative sequence current
zero sequence current
0.08 Ir to 20.00 Ir ≤ ±3% setting or ±0.02Ir
Time delay of stage 1 0.00s to 32.00 s, step 0.01s ≤ ±1% setting or +25 ms, at
200% operating setting Time delay of stage 2 0.00s to 32.00 s, step 0.01s
Reset ratio >0.95
Reset time of stage 1 < 20ms
Dead zone protection (ANSI 50DZ)
Item Rang or Value Tolerance
Technical Data
69
Current 0.08 Ir to 20.00 Ir ≤ ±3% setting or ±0.02Ir
Time delay 0.00s to 32.00s, step 0.01s ≤ ±1% setting or +40 ms, at
200% operating setting
Reset ratio >0.95
Under voltage protection (ANSI 27)
Item Rang or Value Tolerance
Voltage connection Phase-to-phase voltages or
phase-to-earth voltages
≤ ±3 % setting or ±1 V
Phase to earth voltage 5 to 75 V , step 1 V ≤ ±3 % setting or ±1 V
Phase to phase voltage 10 to 150 V, step 1 V ≤ ±3 % setting or ±1 V
Reset ratio 1.01 to 2.00, step 0.01 ≤ ±3 % setting
Time delay 0.00 to 120.00 s, step 0.01 s ≤ ±1 % setting or +50 ms, at 80%
operating setting
Current criteria 0.08 to 2.00 Ir ≤ ±3% setting or ±0.02Ir
Reset time ≤ 50 ms
Overvoltage protection (ANSI 59)
Item Rang or Value Tolerance
Voltage connection Phase-to-phase voltages or
phase-to-earth voltages
≤ ±3 % setting or ±1 V
Phase to earth voltage 40 to 100 V, step 1 V ≤ ±3 % setting or ±1 V
Phase to phase voltage 80 to 200 V, step 1 V ≤ ±3 % setting or ±1 V
Reset ratio 0.90 to 0.99, step 0.01 ≤ ±3 % setting
Time delay 0.00 to 60.00 s, step 0.01s ≤ ±1 % setting or +50 ms, at
120% operating setting
Reset time <40ms
Voltage displacement protection (ANSI 64)
Item Rang or Value Tolerance
Pickup threshold 3V0
(calculated)
2 to 100 V, step 1 V ≤ ± 5 % setting value or ±1 V
Time delay 0.00 to 60.00 s, step 0.01s ≤ ±1 % setting or +50 ms, at
120% operating setting
Reset ratio Approx. 0.95
Technical Data
70
Synchro-check and voltage check (ANSI 25)
Item Rang or Value Tolerance
Operating mode Synchronization check:
Synch-check
Energizing check, and synch-check if energizing check failure
Override
Energizing check:
Dead V4 and dead V3Ph
Dead V4 and live V3Ph
Live V4 and dead V3Ph
Voltage threshold of dead line or
bus
10 to 50 V (phase to earth), step
1 V
≤ ± 3 % setting or 1 V
Voltage threshold of live line or
bus
30 to 65 V (phase to earth), step
1 V
≤ ± 3 % setting or 1 V
∆V-measurement Voltage
difference
1 to 40 V (phase-to-earth), steps
1 V
≤ ± 1V
∆f-measurement (f2>f1; f2<f1) 0.02 to 2.00 Hz, step, 0.01 Hz, ≤ ± 20 mHz
∆α-measurement (α2>α1;
α2<α1)
1 ° to 80 °, step, 1 ° ≤ ± 3°
Minimum measuring time 0.05 to 60.00 s, step,0.01 s, ≤ ± 1.5 % setting value or +60
ms
Maximum synch-check
extension time
0.05 to 60.00 s, step,0.01 s, ≤ ± 1 % setting value or +50 ms
Auto-reclosing (ANSI 79)
Item Rang or Value Tolerance
Number of reclosing shots Up to 4
Shot 1 to 4 is individually
selectable
AR initiating functions Internal protection functions
External binary input
Dead time, separated setting for
shots 1 to 4
0.05 s to 60.00 s, step 0.01 s ≤ ± 1 % setting value or +50 ms
Reclaim time 0.50 s to 60.00s, step 0.01 s
Blocking duration time (AR reset 0.05 s to 60.00s, step 0.01 s
Technical Data
71
time)
Circuit breaker ready supervision
time
0.50 s to 60.00 s, step 0.01 s
Dead time extension for
synch-check (Max. SYNT EXT)
0.05 s to 60.00 s, step 0.01 s
Load shedding protection
Item Rang or Value Tolerance
Under Frequency Load shedding
Frequency for fr =50Hz 45.50 to 50.00 Hz, step 0.01 Hz ≤ ±20 mHz
Time delay 0.05 to 60.00s, step 0.01 ≤ ±1.5 % setting or +60 ms
Under Voltage Load shedding
Voltage 50 to 110 V, step 1V ≤ ±3 % setting or ±1 V
Time delay 0.10 to 60.00s, step 0.01 s
≤ ±1.5 % setting or +60 ms, at
80% operating setting
Overload Load shedding
Phase current 0.08 to 20 A for Ir =1A
0.25 to 100 A for Ir =5A
≤ ±3% setting or ±0.02Ir
Time delay 0.10 to 60.00s , step 0.01 s ≤ ±1.5 % setting or +60 ms, at
200% operating setting
Blocking condition
Frequency change rate ∆f/∆t 1 to 10 Hz/s ≤ ±0.5 Hz/s
Voltage change rate ∆u/∆t 1 to 100 V/s, step 1 V/s ≤ ±3 % setting or ±1 V
Blocking voltage 10 to 120V, step 1 V ≤ ±3 % setting or ±1 V
Blocking current 0 to 2 Ir ≤ ±3% setting or ±0.02Ir
Operating time Approx. 60 ms
Reset time Approx. 60 ms
Under voltage blocking reset ratio Approx. 1
VT secondary circuit supervision (97FF)
Item Range or value Tolerances
Minimum current 0.08Ir to 0.20Ir, step 0.01A ≤ ±3% setting or ±0.02Ir
Minimum zero or negative
sequence current
0.08Ir to 0.20Ir, step 0.01A ≤ ±5% setting or ±0.02Ir
Maximum phase to earth voltage 7.0V to 20.0V, step 0.01V ≤ ±3% setting or ±1 V
Maximum phase to phase
voltage
10.0V to 30.0V, step 0.01V ≤ ±3% setting or ±1 V
Technical Data
72
Normal phase to earth voltage 40.0V to 65.0V, step 0.01V ≤ ±3% setting or ±1 V
Ordering
73
Pre-configure scheme of standard version
Table 4 Function and hardware of the pre-configure scheme (1)
Pre-configure scheme M01 M02 M03 M04 M05 M06 M07
Application (N1) Full TB CF F SF SF BCPU
Non-directional overcurrent protection
(50,51) 1 1
Overcurrent protection (50,51,67) 1 1 1 1 1
Non-directional earth fault protection
(50N, 51N) 1 1
Earth fault protection (50N, 51N, 67N) 1 1 1 1 1
Non-directional sensitive earth fault
protection (50Ns, 51Ns) 1 1
Sensitive earth fault protection (50Ns,
51Ns, 67Ns) 1 1 1 1 1
Neutral earth fault protection (50G,
51G) 1 1
Negative sequence overcurrent
protection (46) 1 1
Thermal overload protection (49) 1 1
Overload protection (50OL)
Overvoltage protection (59) 1 1 1 1
Under voltage protection (27) 1 1 1 1
Displacement voltage protection (64) 1 1
Breaker failure protection (50BF) 1 1 1 1
Dead zone protection (50DZ) 1 1 1 1
Synchro-check and energizing check
(25) 1 1 1 1
Auto-reclosing (79) 1 1 1 1 1
Unbalanced current protection (46NI)
Unbalanced voltage protection (46NU)
Undercurrent protection (37)
Low frequency load shedding function 1 1 1 1 1
Ordering
74
(81U)
Low voltage load shedding function
(27) 1 1 1 1 1
Overload load shedding function 1 1 1 1 1
CT secondary circuit supervision 1 1 1 1 1 1
VT secondary circuit supervision
(97FF) 1 1 1 1 1 1
Fast busbar protection using reverse
interlocking (1) (1) (1) (1) (1)
Analogue input module 1 1 1 1 1 1 1 1
Analogue input module 2 1 1 1 1 1 1 1
Binary input/output module (1) (1) (1) (1) (1) (1) 1
CPU module 1 1 1 1 1 1 1
Direct binary input and output module 1 1 1 1 1 1 1
Binary output module 1 1 1 1 1 1
Power supply module 1 1 1 1 1 1 1
Human interface 1 1 1 1 1 1 1
Case, 4U,1/2 19” 1 1 1 1 1 1 1
Ordering
75
Table 5 Function and hardware of the pre-configure scheme of standard version (2)
Pre-configure scheme V01 V02 C01 C02
Application (N1) V V C C
Non-directional overcurrent protection (50,51)
Overcurrent protection (50,51,67) 1 1
Non-directional earth fault protection (50N, 51N)
Earth fault protection (50N, 51N, 67N) 1 1
Non-directional sensitive earth fault protection (50Ns, 51Ns)
Sensitive earth fault protection (50Ns, 51Ns, 67Ns) 1 1
Neutral earth fault protection (50G, 51G)
Negative sequence overcurrent protection (46)
Thermal overload protection (49)
Overload protection (50OL) 1 1
Overvoltage protection (59) 1 1 1 1
Under voltage protection (27) 1 1 1 1
Displacement voltage protection (64) 1 1 1 1
Breaker failure protection (50BF) 1 1
Dead zone protection (50DZ) 1 1
Synchro-check and energizing check (25)
Auto-reclosing (79)
Unbalanced current protection (46NI) 1
Unbalanced voltage protection (46NU) 1
Undercurrent protection (37) 1 1
Low frequency load shedding function (81U)
Low voltage load shedding function (27)
Overload load shedding function
CT secondary circuit supervision 1 1
VT secondary circuit supervision (97FF) 1 1 1 1
Fast busbar protection using reverse interlocking (1) (1)
Ordering
76
Analogue input module 1 1 1
Analogue input module 2 1 1 1 1
Binary input/output module (1) (1) (1) (1)
CPU module 1 1 1 1
Binary direct input and output module 1 1 1 1
Binary output module 1 1 1
Power supply module 1 1 1 1
Human interface 1 1 1 1
Case, 4U,1/2 19” 1 1 1 1
NOTE:
n : Quantity of standard function or standard hardware, n= 1, 2, ….;
(n) : Quantity of optional function or optional hardware, n= 1, 2, ….;
N1: Application:
Full – Full functions version
TB – For transformer backup protection
CF – For complicated feeder
F – For feeder
SF – For simple feeder
V – For dedicated voltage protection IED
C – For dedicated capacitor protection IED
BCPU: Feeder control and protection unit with advanced interlocking logic
Ordering
77
Pre-configure scheme of advanced version
Table 6 Function and hardware of the pre-configure scheme
Pre-configure scheme M10 L01
Application (N1) AD LS
Non-directional overcurrent protection (50,51)
Overcurrent protection (50,51,67) 1
Non-directional earth fault protection (50N, 51N)
Earth fault protection (50N, 51N, 67N) 1
Non-directional sensitive earth fault protection (50Ns, 51Ns)
Sensitive earth fault protection (50Ns, 51Ns, 67Ns) 1
Neutral earth fault protection (50G, 51G)
Negative sequence overcurrent protection (46)
Thermal overload protection (49)
Overload protection (50OL) 1
Overvoltage protection (59) 1
Under voltage protection (27) 1
Displacement voltage protection (64) 1
Breaker failure protection (50BF)
Dead zone protection (50DZ)
Synchro-check and energizing check (25) 1
Auto-reclosing (79) 1
Unbalanced current protection (46NI)
Unbalanced voltage protection (46NU)
Undercurrent protection (37)
Low frequency load shedding function (81U) 1 1
Low voltage load shedding function (27) 1
Overload load shedding function 1
CT secondary circuit supervision
Ordering
78
VT secondary circuit supervision (97FF) 1 1
Fast busbar protection using reverse interlocking
Analogue input module 1 1
Analogue input module 2 1 1
Binary input/output module 2 2
CPU module 1 1
Direct binary input and output module 1 1
Power supply module 1 1
Front plate 1 1
Case, 4U,1/2 19” 1 1
NOTE:
n : Quantity of standard function or standard hardware, n= 1, 2, ….;
(n) : Quantity of optional function or optional hardware, n= 1, 2, ….;
N1: Application:
Full – Full functions version
TB – For transformer backup protection
CF – For complicated feeder
F – For feeder
SF – For simple feeder
V – For dedicated voltage protection IED
C – For dedicated capacitor protection IED
BCPU - Feeder control and protection unit with advanced interlocking logic
AD – Advanced version
LS – Advanced load shedding version
Ordering
79
Ordering code of standard version
Ordering
80
Ordering
81
Ordering
82
Ordering code of advanced version
Ordering
83
No.17~25
Analogue Input Module 1 (A)Isef +1Im (For pre-configure scheme Mxx only)
I0(1A) +1Im (For pre-configure scheme Mxx only)
I0(5A) +1Im (For pre-configure scheme Mxx only)
6
7
Slot1
No.26~35
8
Null x
3Ip(1A)+I0(5A)+2Im+4U (For pre-configure scheme Mxx only)
3Ip(1A)+I0(1A)+2Im+4U
3Ip(5A)+I0(1A)+2Im+4U (For pre-configure scheme Mxx only)
3Ip(5A)+I0(5A)+2Im+4U
Slot2
M
1
2
3
4
CPU module (M)Slot4
3BI (24V), 3 Ethernet RJ45 ports, 1 RS232 port, IRIG-B
3BI (24V), 2 Ethernet RJ45 ports, 2 RS485 port, 1 RS232 port, IRIG-B
Binary Input and Output module (B)Slot3
5BI (220V) + 8 relays
Null
5BI (110V) + 8 relays
Slot5
5BI (220V) +8 output relays
5BI (110V) +8 output relays
Binary Input and Output module (B)
A B
1
2
x
1
2
B
1
2
No.1~16
C S 2 1 -C 1
Analogue Input Module 2 (A)
3BI (24V), 2 Ethernet optical ports, 1 RS232 port, IRIG-B 3
Null x
Ordering
84
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