Modifications reserved Page 54/86
OPM_SGS_USM_M40_M50_1US_V020.doc Operating Manual SG Series 400 & 500 kVA
7.3.2 Maintenance system shutdown (Load supplied from Q2 on all Units)
Initial status: Load supplied from all Inverters.
First operated unit All other units of the system
1. Press “inverter off” ( O ) key on all Units, and hold until the LED inside the Inverter symbol turns
OFF.
At no redundancy, the system will transfer to Utility supply.
First operated unit All other units of the system
2. Close Q2 (Pos. I) on all Units.
Load is now supplied from Utility in parallel from Bypass and Manual Bypass Q2 of all Units.
First operated unit All other units of the system
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