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7.1.2 Maintenance shutdown (Load on Q2)
Initial status:
Load supplied from Inverter.
1. Press "inverter off" ( O ) key and hold until
the LED inside the Inverter symbol turns
OFF.
• Load is transferred to Utility.
• Inverter shuts down.
• LED Inverter must be OFF.
The LCD screen must display the status "LOAD ON BYPASS".
2. Close Q2 (Pos. I).
• Load is now supplied parallel through
Bypass and Q2.
• LED for Manual Bypass lights up.
3. Open Q1 (Pos. O) and then press "total off"
button.
• Load is now supplied from Manual Bypass.
• Rectifier shuts down and all output and
input contactors are opened.
The LCD panel must display the main screen, indicating the status "LOAD OFF".
4. Disconnect the Battery from the UPS in case
of External Battery.
• Wait 5 minutes for DC-Link Capacitors
discharge.
Modifications reserved
OPM_SGS_USM_M10_M15_0US_V030.doc
END OF PROCEDURE
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Operating Manual SG Series 100 – 120 - 150 kVA
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