Modifications reserved Page 71/86
OPM_SGS_USM_M40_M50_1US_V020.doc Operating Manual SG Series 400 & 500 kVA
7.4.3 From Manual Bypass (Q2) to normal function VFI
Initial status: Load supplied from Manual Bypass.
All Q2 of the system closed.
First operated unit All other units of the system
1. Close Q1 (Pos. I) on all Units.
The Rectifiers will start automatically and at the closure of Q1 of the last Unit, the Bypass
of all Units will be activated.
First operated unit All other units of the system
Proceed with step 2 only when the
LED 3 remains constantly lit on all
units of the parallel system
2. Connect the battery to all Units by
closing the external Battery Breaker
Release.
3. Open Q2 (Pos. O) on all Units.
First operated unit All other units of the system
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LED 3
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