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8
3. Battery Cabinet Installation
3.3 Mechanical Check
While the assembled cabinet battery system is still on the shipping pallet, inspect all
sides for impact or other damage.
1. Open the front door of the battery cabinet.
2. Confirm none of the individual batteries included on a separate pallet are damaged
(applies to BP240V370 model only).
3. Confirm that none of the internal parts (terminal blocks, circuit breakers and other
parts) have been damaged.
4. Note the individual battery model number. Refer to Section 6.2 for the battery’s
terminal type and recommended torque.
5. Use insulated tools to tighten all battery terminal connections to the recommended
torque.
6. Use insulated tools to tighten the cables from the positive and negative output
terminals connecting the batteries to the circuit breaker.
3.4 Internal Wiring (Typical)
• Battery cabinets use multiple 12V DC batteries connected in series to provide nominal
DC voltage of 240V DC (+/-120V DC).
• Internal cabling is sized for specific application load currents. Do not use any other
cable size other than the one provided in the battery cabinet.
• Each battery cabinet shelf includes a specific wiring diagram. Refer to Section 7.
Installation for battery installation details.
• All circuit breakers are in the middle tier of the battery cabinet.
• All load connection polarities will be labeled as “+” (battery positive), “-“ (battery
negative) and “N” (battery center tap) for ±120V DC strings.
• All battery cabinets are provided with a branch circuit overcurrent protection device
and may be wired directly to the load or UPS.
3.5 Preliminary Electrical Check
(After Battery Installation)
1. With the circuit breaker OFF, measure the battery voltage at the line side of the circuit
breaker using a digital voltmeter. Refer to Section 7.2.3 for reference.
2. Using a digital voltmeter, measure +120V between the “+” (battery positive) and “N”
(battery center tap). Confirm the voltage measures a minimum of +110V DC.
3. Using a digital voltmeter, measure -120V between the “-” (battery negative) and “N”
(battery center tap). Confirm the voltage measures a minimum of -110V DC.
4. Using a digital voltmeter, measure +240V between the “+” (battery positive) and the
“-” (battery negative). Confirm the voltage measures a minimum of +220V DC.
5. If the measured voltage is significantly different than anticipated, determine the
cause (e.g. low charge, shorted cell, reversed battery, faulty wiring) and correct the
voltage disparity before proceeding.
6. Set the circuit breaker to the OFF position as a safety precaution during installation.
18-07-363-933856.indb 8 8/1/2018 4:55:36 PM
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