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Operating mechanism motor type NSO80 are designed for operating outdoor
disconnectors and earthing switches three- and single-pole for rated voltage 72,5¸245 kV and 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. |
CHARACTERISTIC FEATURES:
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
Motor operation mechanism consist of:
Mechanism with step screw-gear transmission driven by electrical motor
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
Limit switches, for cutting out the supply of motor after reaching full operating angle by the output shaft
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