25
Maintenance Mode (Manual Bypass)
A manual bypass switch is available to ensure continuity of supply to the critical load when the UPS becomes
unavailable e.g. during a maintenance procedure. (As shown in Fig.3-5).
Fig .3-5 Maintenance mode operation diagram
Danger
During Maintenance mode, dangerous voltages are present on the terminal of input, output and neutral, even
with the LCD turned off.
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.3-6 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.
Содержание EA990G5
Страница 4: ...7 1 Boards installation 72 7 2 Preparation before power on 72 7 3 Power on and testing 72...
Страница 9: ...5 Fig 2 5 The rear pannel of 30kVA UPS Tower Fig 2 6 The rear pannel of 10kVA 15kVA 20kVA UPS Rack...
Страница 43: ...39 Fig 5 9 The left side board of 15kVA standard model Tower Fig 5 10 The board of 15kVA model Rack...
Страница 48: ...44 Fig 5 19 The left side board of 30kVA standard model Tower...
