ABB UniGear ZS1 Instruction Manual page 83

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Closing and opening of NALF switch-disconnector

• The switch-disconnector can only be switched on if the earthing switch is open;

• Put operating lever 215 (figure 131) in pointed upwards or downwards on the grooved shaft of the

switch-disconnector so that there is sufficient room for movement of the operating lever even if space

is limited at the sides;

• Turn the lever clockwise through approx. 180° to charge the opening spring;

• Turn the lever anticlockwise to charge the closing spring and to close the switch-disconnector;

• Turn the lever clockwise through approx. 20° to open the switch-disconnector;

• Observe switch positioning indicator 200.1 (figure 21).

Caution

Until the latch of opening or closing spring snaps, the lever is returned back into the

starting position through the action of spring. Proceed with caution during the

manipulation to prevent the lever from slippingfrom your hand – RISK OF INJURY

Closing and opening of integrated E type earthing switch

• The earthing switch can only be switched on if the switch-disconnector is open;

• Put operating lever 215 in pointed leftwards or upwards on the grooved shaft of the earthing switch

so that there is sufficient room for movement of the operating lever even if space is limited at the

sides;

• Turn the lever clockwise through approx. 90° until the stop is reached to close the earthing switch;

• Turn the lever anticlockwise through approx. 90° until the stop is reached to open the earthing switch;

• Observe switch positioning indicator 207.1.

Closing and opening of NALF switch-disconnector with the motor operator

The switch-disconnector can also be equipped with the motor operator mechanism type UEMC 40 K3

• Briefly operate the control buttons for closing or opening. The switch-disconnector is then switched

automatically or the springs of the switch-disconnector are charged.

Note: We recommend using a protection circuit-breaker in the supply circuit of motor operator. The

opening time of mechanism A operated with the motor operator is approx. 1s. If faster opening is

required, it is necessary to equip mechanism A with an opening coil

Emergency manual operation

If a fault should occur in the motor operator, the switch-disconnector can be switched manually with

the operating lever 215 directly on the shaft of switch-disconnector.

Note: After the manual operation the motor operator will not be synchronous with the switch-

disconnector, which means that it must be manipulated twice to reach synchronization, e.g. opening

- closing.

Caution

The operating lever may only be fitted temporarily to carry out an emergency manual

switching operation - RISK OF INJURY

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