Eaton SC300 Operation Handbook

Contents

SC300 Handbook58 Copyright © 2007-2018 Eaton Corporation. All Rights Reserved.IPN 997-00012-03 B2 Issue B2 July 2018Nominal ACVoltageUsed by the AC Phase 1/2/3 Fail and AC Phase1/2/3 Voltage alarms.SC300: Alarms > AlarmSettings (tab)Web: Alarms > AlarmConfiguration > AC AlarmThresholdsThe following system alarms have particular configuration settings:• System Overload / System Overload B alarm. See details on page 58.• Battery Mid-point monitoring. See details on page 70.Alarm InhibitingTo prevent a single series of faults triggering multiple alarms, an alarm is inhibited by anotheractive alarm if the conditions that trigger the inhibiting alarm include the conditions that triggerthe inhibited alarm. However, the inhibiting alarm only inhibits if it is set to a level of severity thatis equal to or higher than the alarm being inhibited.For example, Partial AC Fail is inhibited if AC Fail is active and AC Fail is set to a level of severitythat is equal to or higher than Partial AC Fail.Alarm Descriptions on page 133 lists the inhibiting alarms that can inhibit each alarm.System Overload AlarmsThe System Overload and System Overload B alarms activate if the total system load exceeds apercentage of the installed rectifier capacity for a specified period, or if the total system loadexceeds a percentage of the installed rectifier capacity minus the capacity of the largest one or tworectifiers if System Overload Type is set to Redundancy N Plus 1 or N Plus 2. This indicates thatadditional rectifiers need to be installed. This is useful at sites where there is ongoing installation ofadditional load equipment.► To enable System Overload• From DCTools/ Web go to: Alarms > Alarm States. Enable and configure System Overload (orSystem Overload B) alarm. See System Alarm Configuration on page 57.• Go to: Alarms > Alarm Configuration. Configure the System Overload alarm parameters. Seedetails on page 59.InformationThe following information is available about System Overload.Parameter Description Where to find:System Power The output power of the system as a percentageof the total nominal power the system is capableof supplying.SC300: AnalogsDCTools/ Web: AnalogInputs