(10) insulation resistance (10.6.13).xls
DESCRIPTION
zTRANSCRIPT
-
Machine Terminal to Terminal Voltage 0.44 KVA
IR (Min) for Machine 1.44 M
Frequency 50 Hz
Voltage Rating of winding under Test 440 Volt
Rated Capacity of Winding under Test 1.6 KVA
Select Type of Transformer
Tank Oil Filled T.C 1
Without Tank Oil filled T.C
Dry or Compound Fill T.C
IR (Min) for Transformer 521.8 M
Type of Cable 1
Type of Insulation Material 3
Outer Diameter of Conductor Insulation
Diameter of Conductor
0
IR (Min) for Cable M
Case-1 No of Outlet (All Point,Plugs with Fitting(Lamp etc)) 25
IR(min) value Excellent 2.00 MCase-2 No of Outlet (All Point,Plugs without Fitting(Lamp etc)) 25
IR(min) value Excellent 2.00 M
Jignesh.Parmar,
www.electricalnotes.wordpress.com
Minimum IR Value for Rotating Machine (AC or DC)
Minimum IR Value for Transformer
Minimum IR Value for Cable
Minimum IR Value for Domestic Wiring
-
Jignesh.Parmar,
www.electricalnotes.wordpress.com
-
50 Hz 25 Hz
1 1.5 1
2 30 20
3 30 20
1.5
1 Paper
2 Varnished
3 ThermoPlastic-Polyethylene
4 Composite-Polyethylene
5 Polyvinyle Chloride (60C)
6 Polyvinyle Chloride (75C)
50000
-
22640 1 Core
2460 Multicore
50000
30000
500
2000
0
-
Name of Equipment
Rated Voltage of Equipment Volt
Recommended Megger Size
Reference Temperature (C)
DateMeasured IR
Value (M)
Temperature
(C)
Temperature
Correction
Factor
IR Value after
Temperature
Adjucment (M)
1-Jan-10 3 42 1.15 3.45 3.45
1-Feb-10 2 56 3.03 6.06 6.06
1-Mar-10 4 55 2.83 11.31 11.31
1-Apr-10 5 30 0.50 2.50 2.50
1-May-10 5 32 0.57 2.87 2.87
2-May-10 2 34 0.66 1.32 1.32
3-May-10 2 34 0.66 1.32 1.32
5-May-10 5 10 0.13 0.63 0.63
6-May-10 0.00 0.00
7-May-10 0.00 0.00
8-May-10 0.00 0.00
9-May-10 0.00 0.00
10-May-10 0.00 0.00
11-May-10 0.00 0.00
12-May-10 0.00 0.00
13-May-10 0.00 0.00
0.00 0.00
0.00 0.00
0.00 0.00
0.00 0.00
0.00 0.00
0.00 0.00
0.00 0.00
0.00 0.00
0.00 0.00
0.00 0.00
0.00 0.00
0.00 0.00
0.00 0.00
0.00 0.00
0.00 0.00
0.00 0.00
0.00 0.00
0.00 0.00
0.00 0.00
0.00 0.00
0.00 0.00
2-Jan-10 2 24 0.33 0.66 0.66
1-Jan-10 2 30 0.50 1.00 1.00
230
100V DC or 250V DC
40
0.00
2.00
4.00
6.00
8.00
10.00
12.00
-
1-Jan-10
1-Feb-10
1-Mar-10
1-Apr-10
1-May-10
2-May-10
3-May-10
5-May-10
6-May-10
7-May-10
8-May-10
9-May-10
10-May-10
11-May-10
12-May-10
13-May-10
2-Jan-10
1-Jan-10
Jignesh.Parmar,
www.electricalnotes.wordpress.com,
0.00
2.00
4.00
6.00
8.00
10.00
12.00
IR Value (M)
-
100 100V DC or 250V DC
200 100V DC or 250V DC300 100V DC or 250V DC
400 500V DC or 1000V DC
500 500V DC or 1000V DC
600 500V DC or 1000V DC
700 500V DC or 1000V DC
800 500V DC or 1000V DC
900 500V DC or 1000V DC
1000 500V DC or 1000V DC
1100 500V DC or 1000V DC
1200 500V DC or 1000V DC
1300 500V DC or 1000V DC
1400 500V DC or 1000V DC
1500 500V DC or 1000V DC
1600 500V DC or 1000V DC
1700 500V DC or 1000V DC
1800 500V DC or 1000V DC
1900 500V DC or 1000V DC
2000 500V DC or 1000V DC
2100 500V DC or 1000V DC
2200 500V DC or 1000V DC
2300 500V DC or 1000V DC
2400 500V DC or 1000V DC
2500 1000V DC or 2500V DC
2600 1000V DC or 2500V DC
2700 1000V DC or 2500V DC
2800 1000V DC or 2500V DC
2900 1000V DC or 2500V DC
3000 1000V DC or 2500V DC
3100 1000V DC or 2500V DC
3200 1000V DC or 2500V DC
3300 1000V DC or 2500V DC
3400 1000V DC or 2500V DC
3500 1000V DC or 2500V DC
3600 1000V DC or 2500V DC
3700 1000V DC or 2500V DC
3800 1000V DC or 2500V DC
3900 1000V DC or 2500V DC
4000 1000V DC or 2500V DC
4100 1000V DC or 2500V DC
4200 1000V DC or 2500V DC
4300 1000V DC or 2500V DC
4400 1000V DC or 2500V DC
4500 1000V DC or 2500V DC
4600 1000V DC or 2500V DC
-
4700 1000V DC or 2500V DC
4800 1000V DC or 2500V DC
4900 1000V DC or 2500V DC
5000 2500V DC or 5000V DC
5100 2500V DC or 5000V DC
6000 2500V DC or 5000V DC
7000 2500V DC or 5000V DC
8000 2500V DC or 5000V DC
9000 2500V DC or 5000V DC
10000 2500V DC or 5000V DC
11000 2500V DC or 5000V DC
12000 2500V DC or 5000V DC
13000 50000V DC or 10000V DC
-
Insulation Class
Reference Temperature (C) 40
Date
Measured IR Value
(M) (for 10
Minitue)
Measured IR
Value (M) (for 1
Minitue)
Temperature
(C)
Temperature
Correction
Factor
1-Jan-10 2 1 42 1.15
1-Feb-10 4 2 56 3.03
1-Mar-10 5 1 55 2.83
1-Apr-10 3 1 30 0.50
1-May-10 2 1 32 0.57
2-May-10 4 1 34 0.66
3-May-10 2 2 34 0.66
5-Jun-11 3 4 42 1.15
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1-Jan-10 2 3 23 0.31
Rated Voltage of Equipment 440
500V DC or 1000V DC
adwaName of Equipment
Recommended Megger Class A Class B Class C Class F
-
Volt
Polarization Index
Number after
Temperature
Adjucment
Insulation
Condition1
2.00 Questionable 2.00 1-Jan-10
2.00 Questionable 2.00 1-Feb-10
5.00 Excellent 5.00 1-Mar-10
3.00 OK 3.00 1-Apr-10
2.00 Questionable 2.00 1-May-10
4.00 OK 4.00 2-May-10
1.00 Poor 1.00 3-May-10
0.75 Poor 0.75 5-Jun-11
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.67 Poor 0.67 1-Jan-10
Jignesh.Parmar,
www.electricalnotes.wordpress.com
440
500V DC or 1000V DC
adwa
0.00
1.00
2.00
3.00
4.00
5.00
6.00
1-Jan-10
1-Feb-10
1-M
ar-10
1-Apr-10
1-M
ay-10
2-M
ay-10
3-M
ay-10
5-Jun-11
Polarization Index Value
Class F Class H
-
1-Jan-10
Polarization Index Value
-
100 100V DC or 250V DC
200 100V DC or 250V DC
300 100V DC or 250V DC
400 500V DC or 1000V DC
500 500V DC or 1000V DC
600 500V DC or 1000V DC
700 500V DC or 1000V DC
800 500V DC or 1000V DC
900 500V DC or 1000V DC
1000 500V DC or 1000V DC
1100 500V DC or 1000V DC
1200 500V DC or 1000V DC
1300 500V DC or 1000V DC
1400 500V DC or 1000V DC
1500 500V DC or 1000V DC
1600 500V DC or 1000V DC
1700 500V DC or 1000V DC
1800 500V DC or 1000V DC
1900 500V DC or 1000V DC
2000 500V DC or 1000V DC
2100 500V DC or 1000V DC
2200 500V DC or 1000V DC
2300 500V DC or 1000V DC
2400 500V DC or 1000V DC
2500 1000V DC or 2500V DC
2600 1000V DC or 2500V DC
2700 1000V DC or 2500V DC
2800 1000V DC or 2500V DC
2900 1000V DC or 2500V DC
3000 1000V DC or 2500V DC
3100 1000V DC or 2500V DC
3200 1000V DC or 2500V DC
3300 1000V DC or 2500V DC
3400 1000V DC or 2500V DC
3500 1000V DC or 2500V DC
3600 1000V DC or 2500V DC
3700 1000V DC or 2500V DC
3800 1000V DC or 2500V DC
3900 1000V DC or 2500V DC
4000 1000V DC or 2500V DC
-
4100 1000V DC or 2500V DC
4200 1000V DC or 2500V DC
4300 1000V DC or 2500V DC
4400 1000V DC or 2500V DC
4500 1000V DC or 2500V DC
4600 1000V DC or 2500V DC
4700 1000V DC or 2500V DC
4800 1000V DC or 2500V DC
4900 1000V DC or 2500V DC
5000 2500V DC or 5000V DC
5100 2500V DC or 5000V DC
6000 2500V DC or 5000V DC
7000 2500V DC or 5000V DC
8000 2500V DC or 5000V DC
9000 2500V DC or 5000V DC
10000 2500V DC or 5000V DC
11000 2500V DC or 5000V DC
12000 2500V DC or 5000V DC
13000 50000V DC or 10000V DC
-
Direction-I Date
Electrode
Spacing (S)
(Meter)
Megger Rading in
Ohms
Earth Resistivity
Ohm-Meter
1 1-Jan-10 1 0
2 2 0
3 5 0
4 10 0
5 15 0
6 25 0
7 50 0
Direction-2 Date
Electrode
Spacing (S)
(Meter)
Megger Rading in
Ohms
Earth Resistivity
Ohm/Meter
1 1 0
2 2 0
3 5 0
4 10 0
5 15 0
6 25 0
7 50 0
Direction-3 Date
Electrode
Spacing (S)
(Meter)
Megger Rading in
Ohms
Earth Resistivity
Ohm/Meter
1 1 0
2 2 0
3 5 0
4 10 0
5 15 0
6 25 0
7 50 0
Direction-4 Date
Electrode
Spacing (S)
(Meter)
Megger Rading in
Ohms
Earth Resistivity
Ohm/Meter
1 1 0
2 2 0
3 5 0
4 10 0
5 15 0
6 25 0
7 50 0
Direction-5 Date
Electrode
Spacing (S)
(Meter)
Megger Rading in
Ohms
Earth Resistivity
Ohm/Meter
1 1 0
2 2 0
3 5 0
4 10 0
5 15 0
-
6 25 0
7 50 0
Direction-6 Date
Electrode
Spacing (S)
(Meter)
Megger Rading in
Ohms
Earth Resistivity
Ohm/Meter
1 1 0
2 2 0
3 5 0
4 10 0
5 15 0
6 25 0
7 50 0
-
Earth Tester/Megger (4 Terminals)
P1 P2
Remarks
C1 C2
Remarks
S
Remarks
Direction: 4
Remarks
Earth Tester/Megger (3 Terminals)
P
E C
Remarks
75 Feet
Direction:5
Direction:1
S
Location of Earth Resistivity Measurement
Direction:3
Jignesh.Parmar,
www.electricalnotes.wordpress.com,
-
Remarks
-
< 0.5Earth Tester/Megger (4 Terminals) < 1.0
< 2.0