Siemens NXAIR - Racking the Contactor Truck to Test Position

Operating the contactor panel with panel width 600 mm
110-0134.9 / 14 NXAIR / ≤ 40 kA 157
14.8 Racking the contactor truck to test position
NOTICE
Maloperation
Racking the contactor truck to test position is only permissible if the contactor is in
OPEN position.
Switch the contactor to OPEN position, if required.
Preconditions
• Contactor truck in service position
• Contactor in OPEN position
• For electromagnetic interlock (optional):
• Electromagnetic interlock deactivated
• Racking crank for moving the contactor truck available
• Double-bit key available
• Padlock (optional) removed from operating slide
Fig. 274: Racking crank
Fig. 275: Double-bit key with a diameter of 5 mm
Fig. 276: Position indicators
(1)
Position indicator for contactor:
OPEN position
(2)
Position indicator for feeder earthing switch:
OPEN position
(3)
Position indicator for contactor truck:
Service position