Installing The Earthing Busbar - Siemens NXPLUS C Installation And Operating Instructions Manual

Installation
Checking the voltage
transformer connection
88/172
Fig. 77: Circuit diagram for checking
the voltage transformer
connection
On one panel of the switchgear, switch the circuit-breaker and the three-position switch to

CLOSED position.
Connect a voltmeter to the outgoing cable of the voltage transformer and set the mV-range.

Apply 15 to 20 V DC to L1, L2, L3 to earth with the battery and observe the voltmeter.

If the pointer moves a little bit, the voltage transformer connection is in good order.
r
14.5

Installing the earthing busbar

Fig. 78: Earth connections
Revision 05 • INSTALLATION AND OPERATING INSTRUCTIONS • NXPLUS C Wind • 802-9074.9
Voltage transformer
Plug connector
Busbar
Three-position switch
Circuit-breaker
Battery box (15 – 20 V)
Earthing connection
Link