GE VH Series 700 User Manual

Also see for VH Series 2000: Owner's manual Specifications Installation guide

modifications reservedOPM_VHE_XXX_0K7_3K0_XGB_V010 16 User manual VH Series 700-3000 UPS 1.0 (GB)4.4.7 OverloadThe demanded power exceeds the normal capacity of the UPS. The alarm occurs when the load is > 100%. Ifthe load exceeds 150% the UPS will immediately switch to bypass, assuming that the conditions for a transferto bypass are fulfilled.If an overload condition between 110-150% persists, the UPS will also switch to bypass operation.During an overload the UPS may automatically switch off within a few minutes (load dependent) and outputpower is lost:• if a transfer to bypass is inhibited (see 4.4.6), or• if the bypass function has been disabled (see 4.5), or• if the UPS operates on battery (see 4.4.4).To avoid these problems, be absolutely certain that the power demands of the protected equipment are withinthe limits of the UPS.4.4.8 Replace batteryEither the batteries are almost chemically worn out or the battery wiring, including the battery fuse, is faulty. Ifthe batteries are aged, they must be replaced as soon as possible to ensure full protection for your equipment(see 7.4). Perhaps the 'replace battery' alarm occurs after a test which you started immediately afterinstallation or after a power failure. In this case the alarm may be incorrect as the batteries have been (partly)discharged during transport or storage or during the power failure. Allow the UPS to recharge the batteries.See also 4.6.4.4.9 General alarm‘General alarm’ comprises a group of alarms; the buzzer behaviour indicates which alarm is active:1 / 2 secs: General faultOverload (see 4.4.7)OvertemperatureOutput out of tolerance1 / 5 secs: Charger failureBypass out of limits (see 4.4.6)Replace battery (see 4.4.8)4.4.10 Shutdown pendingThe UPS monitoring software allows you to switch the UPS into standby mode after a programmable delaytime. During countdown the “operation” LED will blink 2x per second and the buzzer will beep every 5 seconds.4.4.11 Startup pendingThe UPS monitoring software allows you to start up UPS after a programmable delay time. During this delaytime the “operation” LED will blink 2x per second.4.4.12 P-N (Phase-Neutral) reversal indicationIf the P-N reversal indication is enabled, the UPS will indicate whether the voltage between Neutral and Earth(Ground) at the UPS input exceeds a certain voltage (i.e. Phase and Neutral at the UPS input are reversed in anearthed/grounded Neutral system). In this potentially unsafe situation both LEDs ‘operation’ and ‘alarm’ willblink fast and the buzzer will sound. Reversing the mains plug will prevent this unsafe situation and will cancelthe alarm. In case of non-earthed/grounded Neutral system this indication should be disabled.The default setting of the P-N reversal indication is: enabled. Changing of the setting is described in section 4.5.