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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APC Battery Management System manual Charger alarms