Load Sharing, Equalize Battery Charge | Tripp Lite 93-1911 instruction

• Load Sharing

(DIP Switches #1, Group B & #2, Group B)

Your APS features a high-output battery charger that can draw a significant amount of power from your line power source when charging at its maximum rate. If an APS is supplying its full AC power rating to its connected load at the same time as it is charging, it could trip its line source circuit breaker. Tripping this breaker will cut off AC power to your load and stop battery charging.

To reduce the chance of tripping this breaker, select APS models may be set to automatically limit their charger output to keep the sum of their AC load and charger power within their circuit breakers’ rating.

This charger limiting function has four settings, allowing you to choose less charger limiting for APS configurations with higher rated breakers. The figures below show how to set your DIP Switches to select how heavy a load can be placed on your APS before charger limiting begins.

Battery Charger Limiting Points

4 3 2 1

Most Limiting

#1 & #2 Up*

4 3 2 1

Charger limiting takes effect the moment any load is applied; charger output falls gradually from full output at no load to no output at full load.

* Factory default settings.

Charger limiting begins when the APS's load reaches 33% of the APS's load rating. Charger output falls gradually from full output at 33% of the APS's load rating to about 40% of full output at full load.

4 3 2 1

Least Limiting

#1 Up & #2 Down

4 3 2 1

Charger limiting begins at when the APS's load reaches 66% of the APS's load rating. Charger output falls gradually from full output at 66% of the APS's load rating to about 40% of full output at full load.

No charger limiting occurs at any load size.

Less Limiting

#1 Down & #2 Up

No Limiting

#1 & #2 Down

• Equalize Battery Charge

(DIP Switch #3, Group B)

This DIP Switch is momentarily engaged to begin the process of equalizing the internal resistance of your battery's cells. This can extend the useful life of certain types of batteries; consult with your battery's manufacturer to determine if your batteries could benefit from this process. The charge equalization process is automatic and once started can only be stopped by removing the input power.

SETTING PROCEDURE:

1)Move to “Equalize” (DOWN) position for three seconds.

2)Move to “Reset” (UP) position and leave it there.

CAUTION: Battery charge equalization should only be performed in strict accordance with the battery manufacturer's instructions and specifications.

CAUTION: Do not leave DIP switch #3 in the down position after beginning process.

Battery Charge	Switch Position
Reset	Up*
Equalize	Down

*Factory default setting.

•Disable Battery Charger (APS 2448 only)

4 3 2 1

Reset*

Equalize

(DIP Switch #4, Group B)

If you are connecting the APS 2448 to batteries with a separate charger, you may disable the APS 2448’s built-in charger with this switch to prevent overcharging.

Battery Charger	Switch Position
Disable	Up*
Enable	Down
* Factory default setting.

4 3 2 1

Disable*

Enable