GE Industrial Solutions LP11 924 Series 6 & 10 kVA - Manual (Page 43)

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OPM_LPU_11U_6K0_10K_1US_V010.Doc 42 User manual LP11 924 6 & 10 kVA UPS 1.0
5.6.5 - ECO-MODE
The UPS is equipped with the ‘ECO-mode’ feature. If the feature is enabled, the load is operated on utility through the
electronic bypass switch. If the utility is interrupted or out of limits the load is automatically transferred to the inverter.
Operating the load on utility improves the efficiency of the UPS with 5-8% and saves on energy costs. In case of unstable
utility there will be many transfers between double conversion mode and ECO mode. We advise not to use the ECO-mode
in case of an unstable utility.
After enabling the ECO-mode (please refer to service screens section 5.4.3) the standard menu changes to:
LP 6-11U 924
LOAD 37% ECO
NOTE
If the UPS operates in parallel the ECO-mode feature is disabled.
5.6.6 - AUTO RESTART
If this feature is enabled and the unit has shut down (e.g. due to overload) the UPS will start up automatically when the
normal situation is restored. The off-factory setting is: enabled.
If the auto restart feature is disabled the unit will not automatically restart when the normal situation is restored but the
display will show:
AUTO RESTART OFF
PRESS ENTER
After ‘Enter’ the unit will restart. See also section 5.4.3 ‘service screens’.
5.6.7 - SUPERIOR BATTERY MANAGEMENT
Load dependent battery-end voltage:
The allowable final battery voltage depends on the discharge current: the higher the current, the lower the 'end-of-
discharge' battery voltage. This gives maximum capacity without over discharging. Over discharging results in failure to
recover normal capacity and in shortened battery life.
Equalize mode:
When switched on for the first time the UPS will start boost-charging the batteries for 15 hours in order to equalize all
battery voltages.
Boost mode:
If after a discharge the battery voltage is lower than 240Vdc, the UPS will charge the batteries with a boost charge
voltage of 285Vdc. This enables fast recharging of the batteries. The programmed battery charging mode will change
from boost charge into float charge after boost charging twice.
Temperature compensated battery charging:
This feature reduces the battery charge voltage with increasing temperature (-18mV/°C or -32.4mV/°F per 12V battery).
As a result poor charging of the batteries under low temperature conditions and overcharging of the batteries under high
temperature conditions are prevented.