Installation Plan and Unpacking
3-6
Eaton 93PM Integrated Battery Cabinet-Small Welded (IBC-SW) Installation Manual P-164000639—Rev 1
www.eaton.com/powerquality
3.2.2
IBC–SW Power Wiring Preparation
Read and understand the following notes while planning and performing the installation:
WARNING
As a result of the connected loads high leakage current is possible. Connection to earth ground is
required for safety and proper product operation. Do not check IBC–SW operation by any action
that includes removal of the earth (ground) connection with loads attached.
l
Refer to national and local electrical codes for acceptable external wiring practices.
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Material and labor for external wiring requirements are to be provided by the customer.
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For external wiring, use 75°C copper wire. Wire sizes listed in Table 3-3 and Table 3-4 are for copper wiring
only. If wire is run in an ambient temperature greater than 40°C, higher temperature wire and/or larger size
wire may be necessary. Wire sizes are based on using the specified breakers.
l
Recommended wire sizes are based on National Electrical Code
®
(NEC
®
) 70 Table 310.15(B)(16) 75°C
ampacity with 40°C ambient correction factors.
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The battery wiring used between the battery and the UPS for standalone installations should be a maximum
of 20 meters (65 feet) with a voltage drop of less than 1% of nominal DC voltage at rated battery current.
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Refer to NEC Article 250 and local codes for proper grounding practices.
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Battery voltage is computed at 2 volts per cell as defined by Article 480 of the NEC. Rated battery current is
computed at 2 volts per cell.
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The battery cabinet frame is not referenced to the DC circuit.
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Each battery cabinet has its own overcurrent protection device.
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The internal battery string is to be connected by an authorized Eaton Customer Service Engineer.
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Refer to the appropriate Eaton 93PM UPS Installation and Operation manual listed in paragraph 1.7 for UPS
cabinet conduit and terminal specifications and locations.
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The term line-up-and-match refers to accessory cabinets that are physically located adjacent to the UPS. The
term standalone refers to accessory cabinets that are located separate from the UPS.
For line-up-and-match external power wiring requirements, including the minimum AWG size of external wiring,
see Table 3-3. For standalone external power wiring requirements, including the minimum AWG size of
external wiring, see Table 3-4. Wire sizes listed are for copper wiring only.
Table 3-3. Line-Up-and-Match External Power Recommended Wire Sizes for the Eaton 93PM IBC–SW
Battery Cabinet to UPS
Model
UPS Model
Number of
Cabinets
Terminal
Recommended Conductor
Size
(AWG or kcmil)
Number per Pole
93PM IBC–SW
(432V or 480V)
50 kW
100 kW
150 kW
200 kW
1, 2, 3, or 4
Battery (+)
Factory Supplied 2/0
1
Battery (–)
Factory Supplied 2/0
1
Ground
#4
one per cabinet