2
8. OPERATING PROCEDURES FOR PARALLEL SYSTEMS 35
8.1. Introduction 35
8.1.1. Redundancy 35
8.1.2. Power Increase 35
8.2. Procedure for Commissioning and Start-Up 36
8.3. Procedure for Decommissioning 37
9. TROUBLESHOOTING 38
9.1. Bypass voltage failure Alarm 38
9.2. Bypass phase sequence wrong Alarm 38
9.3. Inverter not sync. with bypass Alarm 38
9.4. Input phase sequence wrong Alarm 38
9.5. Rectier not sync. with input Alarm 38
9.6. DC voltage failure Alarms 38
9.7. ESD active Alarm 38
9.8. Ambient temperature high Alarm 38
9.9. Overload Alarms 38
9.10. Maintenance bypass active Alarm 39
9.11. Battery test failure Alarm 39
9.12. Input voltage failure Alarms 39
9.13. Inverter temperature high/ Rectier temperature high Alarms 39
10. PREVENTIVE MAINTENANCE 40
10.1. Batteries 40
10.2. Battery Fuses 40
10.3. Fans 41
10.4. Capacitors 41
Appendix-1: Alarms List 42
Appendix-2: Diagnostics List 43
Appendix-3: Event List 44
Appendix-4: Technical Specications 46
Appendix-5: Description of UPS and Block Diagram 48
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