APC Battery Management System User Manual download pdf (Page 31)

USER’S GUIDE

Battery Management System

Charger alarms.

Battery alarms.

Category Details Diagnostics

String Voltages The voltage of a battery

string is above or below

the threshold.

Problem: High or low string voltage

indicates that the string charger may

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

sufficient flow in the

discharge direction to

indicate a loss of the

charger value.

Investigate the loss of power to the

charger and restore it as soon as

possible.

Ripple Current The detected ripple

current exceeds the alarm

threshold.

Investiage the source of high AC

current in the charger output.

Category Details Diagnostics

Discharge

Tes t

The voltage of individual

batteries listed in the alarm

text dropped below the

configured minimum

threshold during the last

discharge.

Problem: Recorded voltage below the

minimum threshold indicates a battery

that will not perform adequately in

providing system backup in relation to

others in the same string.

Response: Replace failed batteries

immediately so that system backup time

is not reduced.

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APC Battery Management System User Manual Page 31

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