ABB ZX2 - Page 81

5. OPERATION 81
Operation of the disconnect
• Approx. 24 turns of the crank are required from
the OFF position to the ON position of the
disconnect and vice versa.
• Disconnect OFF  ON
- To close the disconnect, turn the crank
clockwise until the stop is reached.
- Withdraw the crank.
- Close the flap of the mechanical access lock.
• Disconnect ON  OFF
- Turn the crank counter-clockwise until the
stop is reached.
- Withdraw the crank.
- Close the flap of the mechanical access lock.
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
The three position disconnect and the disconnect
can be fitted with a blocking magnet -RLE1. In
certain situations, the blocking magnet prevents
the devices from being operated. On failure of
auxiliary voltage, the blocking magnet
permanently prevents the access lock from being
opened. Deblocking of the blocking magnet
requires work on the operating mechanism and
may only be performed by qualified personnel.
Please contact the ABB Service Department if
required.
• Grounding switch ON  OFF  disconnect ON
- Turn the crank clockwise until the stop is
reached.
- The three-position disconnect is then in the
OFF position.
- Withdraw the crank and reinsert it. Turn the
crank clockwise until the stop is reached.
- Withdraw the crank.
- Close the flap of the mechanical access lock.
• Disconnect ON  OFF  grounding switch ON
- Turn the crank counter-clockwise until the
stop is reached.
- The three-position disconnect is then in the
OFF position.
- Withdraw the crank and reinsert it. Turn the
crank counter-clockwise until the stop is
reached.
- Withdraw the crank.
- Close the flap of the mechanical access lock.