APC Battery Management System manual Charger alarms

Battery Management System

USER’S GUIDE

®

Charger alarms.

Category	Details	Diagnostics
String Voltages	The voltage of a battery	Problem: High or low string voltage
	string is above or below	indicates that the string charger may
	the threshold.	be defective or improperly adjusted. If
		uncorrected, this condition can cause
		permanent damage to the batteries.
		Response: Adjust the DC string-
		charging voltage to the proper setting.
String Current	The BMS has detected a	Investigate the loss of power to the
	sufficient flow in the	charger and restore it as soon as
	discharge direction to	possible.
	indicate a loss of the
	charger value.
Ripple Current	The detected ripple	Investiage the source of high AC
	current exceeds the alarm	current in the charger output.
	threshold.

Battery alarms.

Category	Details	Diagnostics
Discharge	The voltage of individual	Problem: Recorded voltage below the
Test	batteries listed in the alarm	minimum threshold indicates a battery
	text dropped below the	that will not perform adequately in
	configured minimum	providing system backup in relation to
	threshold during the last	others in the same string.
	discharge.	Response: Replace failed batteries
		immediately so that system backup time
		is not reduced.

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