Gtec NS3000 Series, User Manual

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8 NS3000 UPS 60KVA~120KVA User Manual
2.3.5 ECO Mode
To improve system efficiency, UPS rack system works in Bypass mode at
normal time, and inverter is standby. When the utility fails, the UPS transfers to
Battery Mode and the inverter powers the loads.
Fig.2-7 ECO Mode operation diagram
Note
There is a short interruption time (less than 10ms) when transfer from ECO mode to battery
mode, it must be sure that the interruption has no effect on loads.
2.3.6 Auto-restart Mode
The battery may become exhausted following an extended AC mains failure.
The inverter shuts down when the battery reaches the End of Discharge Voltage
(EOD). The UPS may be programmed to “System Auto Start Mode after EOD”.
The system starts after a delay time when the AC mains recovers. The mode
and the delay time are programmed by the commissioning engineer.
2.3.7 Frequency Converter Mode
By setting the UPS to Frequency Converter mode, the UPS could present a
stable output of fixed frequency (50 or 60Hz), and the bypass static switch is
not available.
2.4 UPS Structure
2.4.1 UPS Configuration
The UPS configuration is provided in Table 2.1
Table2.1 UPS Configuration
Item Components Quantity/ pcs Remark
Cabinet
Circuit Breaker 4
Requisite, factory
installed
Bypass &
Monitoring module
1
Requisite, factory
installed
Dust filter 1 Optional.