Zakład Wytwórczy Aparatów Elektrycznych Sp. z o.o.
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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.
