Catalogue No 05.07.02.EN

NSO80

ISO 9001: 2000ISO 9001: 2000

Disconnectors

SwitchDisconnectors

EarthingSwitches

Accessories

OperatingDevices

Circuit Breakers

Motor operating mechanism

1. APPLICATION.

2. CHARACTERISTIC FEATURES.

3. ADDITIONAL EQUIPMENT.

Operating mechanism motor type NSO80 are designed for operating outdoor disconnectors and earthing switches:- three- and single-pole for rated voltage from 72,5kV t o 420 kV- other with turning angle to transposition 192° and torque required to closing or opening not exceeding 800 Nm.The operating mechanism may also be used with previously produced disconnectors 110 and 220 kV in case of modernisation of substations and replacement of pneumatic mechanism with electrical. Apart from possibility of using one operating mechanism to cooperation with high-voltage three-pole switch, electric circuit diagrams provided for operating mechanisms type NSO 80 enable also electrical connection of operating mechanisms of three single-pole switches in one remote control set.

! simple design using standard elements;

! high torque, enabling easy operation of single- and three-pole sets of disconnectors;

! various auxiliary and control equipment (including auxiliary switch with 16 contacts);

! possibility of remote control, electrical interlocking of operating mechanism of main circuit and earthing knife, and busbars difference protection;

! corrosion-resistant materials (housing made of aluminium and painted);

! high reliability;

! easy service and maintenance.

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Motor operation mechanism consist of:

control panel;

auxiliary switch (7 normally open contacts, 8 normally closed contacts;

switch with 1 normally open + 1 normally closed contact for busbars difference protection; blocking magnet, switching off electrical control in case of manual operating;

anticondensation heater;

terminal strip for connecting control and supply circuits;

Supporting structure.Supporting structure is produced in two versions:

a) for disconnectors 72,5¸123 kV;b) for disconnectors 245 kVTwo operating mechanisms can be mounted on a supporting structure. In case of ordering disconnectors with one earthing switch and two operating mechanism, order one supporting structure.

Coupling shaft.In standards versions shafts are 700 and 1700 mm long.

In case of mounting operating mechanism on supporting structure manufactured by „ZWAR" S.A. order shafts 700 mm long. For user's supporting structure order shafts 1700 mm long.Depending on assignment shafts have different upper endings.- for disconnectors (earthing switches) coupled in three-pole set by coupling mechanism: coupling fork;- for other (without coupling mechanism) and single-pole disconnectors: seat.

All mechanisms and control components are attached to the body and installed in aluminium-sheet housing. Output shaft is passed from upper wall of the housing. In the left wall a switch settings either electrical or emergency manual control is fixed (accessible after the side door is opened).In the bottom wall of the housing, bushing plate for mounting a gland for incoming connection cables and a gland for ventilation (with filter insert) is provided. Two holes for fixing the operating mechanism to the supporting structure by means of bolts M16, are placed in the back wall of the housing.Manual version of the operating mechanism does not have transmission chain, motor and its control accesories.Coupling shaft:

Coupling shaft enables coupling the shaft of disconnector or earthing switch with the output shaft of the operating mechanism. Maximum length of the coupling shaft is 1700 mm, and maximum aberration from vertical axis is 18°.The coupling shaft may be easily shortened and adapted to installation requirements of the substation.Method of operation:

Giving a pulse from pushbutton on control panel, or from outside control circuit, via one of the contactors, causes energising of the motor. Torque is transmitted from the shaft of the motor. When full rotating angle (192°) is reached, limit switch cancels the lock-in of the contactor, which switches off supply of the motor.Giving pulse by means of second pushbutton enables return operation.In the initial part of the operation, motion is transmitted onto auxiliary switch, causing opening of its normally open contacts and stopping it in the intermediate position, and then, while the main shaft reaches the extreme position, closing its normally open contacts. It signals reaching the extreme position.During operation also the busbar difference protection pilot is switched. Switching follows the key diagram of the operating mechanism.In case of manual emergency operation, energise the voltage trip by pushing the crank release button, and then set the setting switch, which causes cutting out the supply of control circuits and uncovers the inlet for crank-handle. After making about 54 revolutions of the crank-handle, the shaft of the operating mechanism is set from one extreme position to another.

4. SERVICE CONDITIONS.

Drive type:- NSO80 - motor operating mechanism- NRO 80 - manual operating mechanism

NSO80NSO80 -2-2

Following construction version

Page 2/4 ZWAE Sp. z o.o.

Motor and manual operation mechanism are meant for operation outdoors in following parameters:

! ambient temperature:

!maximum 314K (+40°C)

!minimum . 228K (-45°C)

5. DESIGNATIONS OF OPERATING MECHANISM TYPES.

6. DESIGN AND OPERATION.

[1] housing [2] mechanism with step screw-gear transmission driven by electrical

motor [3] control panel [4] type of duty switch [5] control button [6] blocking magnet [7] auxiliary switch [8] anticondensation heater [9] terminal strip [10] limit switches [11] motor control system [12] cable gland [13] drive shaft

No . Designation Value

1. Rated voltage / rated current:- squirrel-cage motor 3x 400 VAC / 4,5 A- series motor 220 VDC / 4 A

110 VDC / 10 A

- coil of contactor controlling motor supply voltage(depend on rated voltage) 400 VAC

220 VDC110 VDC

- coil of contactor 220 VDC220 VAC110 VDC110 VAC

- heater 230 VAC220 VDC

- electromagnetic interlocking 220 VDC110 VDC

2. Rated power:- squirrel-cage motor 750 W- series motor 500 W

- coil of contactor 7 W

- heater 25 W

- coil of electromagnetic interlocking 7 W

3. Torque on output shaft- rated 500 Nm- maximum 800 Nm

4. Operating time approx. 8 s

5. Manual operation mechanism crank number approx. 100

o o6. Turning angle of output shaft 192 ± 2

7. Rated switching capacity of auxiliary switch AC-15; 230 V; 2,5 ADC-13; 220 V; 0,25 A

28. Max. Cross-section of conductors connected 4 mm

9. Degree of protection of housing IP 54

10. Weight approx. 56 kg

11. Rated mechanical endurance 2000 cycles

8. DIMENSIONAL DRAWING.

xx

Stuffing-box DP29Stuffing-box DP29

Note: Note: Some improvements and alteration may occur as a consequence of development Some improvements and alteration may occur as a consequence of development in manufacturing techniques.in manufacturing techniques.

Page 3/4ZWAE Sp. z o.o.

7. TECHNICAL DATA.

Some improvements and alteration may occur as a consequence of development in manufacturing techniques.

Note:Versions of electrical scheme would be readjust to individual needs.

9. CONNECTION DIAGRAM - OPTIONAL.

RR

K1 - Closing contactorK1 - Closing contactorK2 - Opening contactorK2 - Opening contactorK3 - Supply voltage control contactorK3 - Supply voltage control contactorK4 - Thermal relayK4 - Thermal relay

S1 - Closing pushbuttonS1 - Closing pushbuttonS2 - Opening pushbuttonS2 - Opening pushbuttonS3 - Crank-handle blocking release pushbuttonS3 - Crank-handle blocking release pushbutton

S4 - Closing limit switchS4 - Closing limit switchS5 - Opening limit switchS5 - Opening limit switchMP - Crank-handle blocking switchMP - Crank-handle blocking switch

S6 - Busbar difference protection contactsS6 - Busbar difference protection contactsS7 - Control type switch (remote - local - manual)S7 - Control type switch (remote - local - manual)

S8 - Auxiliary switchS8 - Auxiliary switchE - HeaterE - HeaterM - Electrical motorM - Electrical motor

Y - Voltage tripY - Voltage trip

P - Bridge-rectifierP - Bridge-rectifier

R - Resistor 25Ohm / 50WR - Resistor 25Ohm / 50WA - High voltage tripA - High voltage trip

Notes:Notes:1.Shown: K3 in no voltage position;1.Shown: K3 in no voltage position;

S7 in position 'manual control' S7 in position 'manual control'

K1 - Closing contactorK1 - Closing contactorK2 - Opening contactorK2 - Opening contactorK3 - Supply voltage control contactorK3 - Supply voltage control contactorK4 - Thermal relayK4 - Thermal relayS1 - Closing pushbuttonS1 - Closing pushbuttonS2 - Opening pushbuttonS2 - Opening pushbuttonS3 - Crank-handle blocking release pushbuttonS3 - Crank-handle blocking release pushbuttonS4 - Closing limit switchS4 - Closing limit switchS5 - Opening limit switchS5 - Opening limit switchMP - Crank-handle blocking switchMP - Crank-handle blocking switch

S6 - Busbar difference protection contactsS6 - Busbar difference protection contactsS7 - Control type switch (remote - local - manual)S7 - Control type switch (remote - local - manual)S8 - Auxiliary switchS8 - Auxiliary switchE - HeaterE - HeaterM - Electrical motorM - Electrical motorY - Voltage tripY - Voltage tripA - High voltage tripA - High voltage trip

Notes:Notes:1.Shown: K3 in no voltage position on L1, L2, L3;1.Shown: K3 in no voltage position on L1, L2, L3; S7 in position 'manual control' S7 in position 'manual control'

Zak³ad Wytwórczy Aparatów Elektrycznych Sp. z o.o.ul. Gdañska 60; 84-300 LêborkTel.: +48 59 86-336-15; Fax: +48 59 86-333-86e-mail: zwae@zwae.com.plwww.zwae.com.pl