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Current Sensor for the Battery Manager
One Current Sensor for the Battery Manager is recommended per string of batteries. A maximum of
two Current Sensors can be connected per Battery Manager main module AP9922. Depending on the
system configuration, there are two Current Sensor options available:
• AP9920CS: I ≤ 1000 A
• AP9920CS2000: 1000 A < I ≤ 2000 A
NOTICE
RISK OF EQUIPMENT DAMAGE
The Battery Manager must be powered off before connecting the Current Sensor or before
performing any battery maintenance.
Failure to follow these instructions can result in equipment damage.
DANGER
HAZARD OF ELECTRIC SHOCK
• Batteries are energized even when AC power has been disconnected.
• The Battery Manager must be powered off before connecting the Current Sensor or before
performing any battery maintenance.
• Installation of Current Sensor must only be performed by qualified personnel knowledgeable of
batteries and the required precautions. Keep unqualified personnel away from batteries.
Failure to follow these instructions will result in death or serious injury.
Installation
1. Remove the screw and nut from either side of the Current Sensor and loosen the screw on
the other side.
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2. Separate the top and bottom sections of the sensor by twisting the sections apart.
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UPS / Charger / Load
NOTE: Make sure the arrow on the Current Sensor is pointing away from the positive battery
terminal, connected to the lead on which the sensor is placed.
3. Place the separated parts of the sensor around the main output battery lead on any battery.
Secure the sensor in place using the screw and nut removed in Step 1. Tighten the remaining
screw.
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4. Plug the current sensor connector into the connector port called Current Probes - Probe A on
the rear of the Battery Manager Main module AP9922.
NOTE: Expansion module AP9922S cannot be connected to a current sensor. It does not have a
Current Probes port on the rear panel.
If a second string of batteries is connected to the Battery Manager AP9922 Main module, a
second current sensor must be installed on that string of batteries and must be connected to the
port labeled Current Probes - Probe B on the rear of the module.
Customer support and warranty information is available at www.schneider-electric.com.
© 2015 Schneider Electric. All Rights Reserved.
990-1877A
12/2015
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