ZWAE NSO80 Manual
Installation and Service Manual
Zakład Wytwórczy Aparatów Elektrycznych Sp. z o.o.
NSO80
Motor operating mechanism
Manual No. DTR.05.07.08.EN
Zakład Wytwórczy Aparatów Elektrycznych Sp. z o.o.
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zwae.com.pl
WARNING!
During the operation of electrical equipment, certain parts of
these devices are normally under dangerous voltage, and me-
chanical parts, also remotely controlled, can move quickly.
Failure to follow the warning instructions can result in serious
personal injury or material damage.
Only suitably qualied personnel can work on or near the device.
This personnel must know exactly all safety rules and rules for
maintaining the device in accordance with these instructions.
The problem-free and safe operation of this device requires
proper transport, proper storage, construction and assembly as
well as careful service and maintenance.
Zakład Wytwórczy Aparatów Elektrycznych Sp. z o.o.
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Table of contents
1. TRANSPORT ........................................ 4
1.1. Unpacking and inspection .............................. 4
1.2. Storage and transport.................................. 5
2. DESCRIPTION ........................................ 5
2.1. Construction and principle of operation . .................. 6
2.2. Housing.............................................. 7
2.3. Driving mechanism .................................... 7
2.4. Climatic conditions .................................... 7
2.5. Nameplate ........................................... 8
2.6. Basic technical parameters ............................. 8
3. INSTALLATION AND ADJUSTMENT ...................... 10
3.1. Coupling with disconnectors ONIII 110 and 220kV ......... 10
3.2. Protective earthing connection.. . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.3. Connection of control and auxiliary circuits .. . . . . . . . . . . . . . . 10
3.4. Tests before rst run ................................... 11
4. OPERATING MANUAL ................................. 11
4.1. Manual maneuvring ................................... 11
4.2. Local maneuvring ..................................... 11
4.3. Remote maneuvring ................................... 11
5. INSPECTION AND MAINTENANCE ....................... 12
5.1. Visual inspection ...................................... 12
5.2. Spare parts and recommended maintenance materials ..... 12
5.3. Periodic inspections ................................... 12
6. DIMENSIONAL DRAWING (STANDARD VERSION - 192°) ..... 13
7. UTILIZATION ......................................... 14
Zakład Wytwórczy Aparatów Elektrycznych Sp. z o.o.
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1. TRANSPORT
1.1. Unpacking and inspection
Immediately after receiving the operating mechanism the recipient should check delivery compliance with the
packing list. Then the recipient should check whether the operating mechanism has not been mechanically
damaged during transport and the data on the nameplate match the order.
The operating mechanism is transported in cardboard box. They are delivered to the recipient in completely
assembled condition.
The operating mechanisms are delivered to the customer on a pallet (gure below). We suggest moving card-
boards by grabbing the tapes used to pack the operating mechanisms.
Tape
Zakład Wytwórczy Aparatów Elektrycznych Sp. z o.o.
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1.2. Storage and transport
The operating mechanisms can be transported to the place of storage and installation by any means of trans-
port, provided that they are protected against moisture
During transport, the operating mechanisms should be secured against shifting and colliding with each other
or with vehicle parts. An additional protection for longer transport is a bag with moisture absorbing substance.
It should be removed from the operating mechanism before energizing the heater.
It is forbidden to store the operating mechanisms on their backs in a stacked manner. The operating mecha-
nisms should be positioned vertically as shown in the drawing in section 1.1. This is the only acceptable drive
storage system.
2. DESCRIPTION
NSO80 motor operating mechanisms are intended for maneuvering HV outdoor disconnectors and earthing
switches which angular displacement is up to 192° and both closing and opening operations anti-torque is up
to 800 Nm. The operating mechanisms are compatible with disconnectors and earthing switches produced
by ZWAR, operating at 110, 220 and 400 kV voltage (e.g. ONIII110..., ONI220, ONS..., UNIII110...). They replace
manual or pneumatic operating mechanisms as an upgrade of existing HV disconnectors.
CAUTION! When storing the operating
mechanisms, protect against moisture
until the heater will be energized.
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2.1. Construction and principal of operation
1. housing,
2. multi-stage gearing mechanism,
3. control panel,
4. control mode switch,
5. control buttons,
6. electromagnetic locking,
7. auxiliary contact switch (NO + NC),
8. heater,
9. terminal strip for connecting control and power circuits,
10. limit switches,
11. motor supply control system,
12. cable gland,
13. driving shaft.
13
1
3
6
9
8
12
11
7
4
55
10
2
Zakład Wytwórczy Aparatów Elektrycznych Sp. z o.o.
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2.2. Housing
The housing is made of aluminium metal sheet, grade PA4, covered by powder painting epoxy color. Doors are
stuffed with silicone seal. The construction of housing is on protection level IP55 with simultaneous ventilation
of the interior air. It has been achieved thanks by labyrinth seal of drive shaft's output on the top of housing and
using net-protected gland hole in the bottom of housing.
2.3. Driving mechanism
Driving mechanism consists:
• electric motor,
• multi-stage gearing,
• helical gear,
• gearing.
The electric motor drives a lead screw through a two-stage gearing. As a result of rotation of the screw, the
nut mounted on the screw moves along the screw causing rotation of the cooperating forks. A gear wheel is
mounted on the shaft of the fork, cooperating with the gear mounted on the driving shaft. As a result of using
a helical gear unit, the angle of rotation of the output shaft is limited to 192 °. The maximum torque is about
800 Nm.
2.4. Climatic conditions
Operating mechanisms are dedicated to outdoor switchgears in the following conditions:
a) temperature (from – 50°C to + 40°C),
b) air humidity (up to 100% at 20°C),
c) altitude (up to 1000 m),
d) wind speed (up to 30 m/s).
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2.6. Nameplate
2.6. Basic technical parameters
No. Parameter Value
1.
Rated voltage / rated current:
- squirrel-cage motor
- series motor
3x 400 VAC / 4,5 A
220 VDC / 4 A
110 VDC / 10 A
- contactor coil of motor supply voltage
control (depending on motor rated voltage)
220 VDC
110 VDC
- contactor coil
220 VDC
230 VAC
110 VDC
110 VAC
- heater 230 VAC
220 VDC
- electromagnetic lock 220 VDC
110 VDC
IP55
Zakład Wytwórczy Aparatów Elektrycznych Sp. z o.o.
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No. Parameter Value
2.
Rated power:
- squirrel-cage motor
- series motor
750 W
500 W
- contactor coil 7W
- heater 25W
- electromagnetic coil 7W
3.
Shaft torque
- rated
- maximum
300/500/1000 Nm
500/800/1600 Nm
4. HV switching time 7s; 11s; 16s
5. Main shaft angular displacement 90°; 125°; 192°
6. Maximum conductor cross section 4 mm2
7. Enclosure protection rating IP 55
8. Operating mechanism’s weight ca. 56 kg
9. Rated mechanical strenght 2000 cycles
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3. INSTALLATION AND ADJUSTMENT
3.1. Coupling with disconnectors ONIII 110 and 220kV
For coupling operating mechanism with disconnectors is used coupling shaft with a joint.
The end of the shaft is adapted to a particular type of apparatus. To fasten the operating mechanism are used
lattice structures adapted to the customer's needs.
3.2. Protective earthing connection.
For earth connection is used a terminal shown on dimensional drawing. The terminal consists M12 screw and
a washer. The cross-section of the rail connecting operating mechanism to the switchgear's earth connections
ought to be chosen in accordance with legal regulation in force.
Prior to connecting of protective grounding to the operating mechanism’s housing, carefully clean the earthing
terminal's surface. At the end of earthing rail ø13 hole for fastening screw ougth to be drilled. After smoothing
the surface and lubricating the hole, using petroleum jelly, it's allowed to assembly the rail to earthing terminal,
with paying attention to precise bolting on the screw.
3.3. Connection of control and auxiliary circuits
Control cable should be entered into housing through the gland in operating mechanism's duct plate. Connec-
tion of control cable's wires with an operating mechanism's terminal strip should be performed in accordance
with proper switchgear's project. When connecting the motor supply voltage, pay special attention to maintain
correct phase sequence.
The electrical scheme is set individually, its paper version is supplied with the operating mechanism and its
number is indicated on the nameplate.
Table of contents
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