Eaton Single EBC, Installation And Operation Manual

10

External Battery Cabinets

3 .2 .2     EBC Power Wiring Preparation

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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 90°C copper wire. Wire sizes listed in Table 3-3 are for copper wiring only. If 
wire is run in an ambient temperature greater than 30°C, higher temperature wire and/or larger size 
wire may be necessary. Wire sizes are based on using the specified breakers.

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The battery wiring used between the battery and the UPS should be a maximum of 20 metres (65 
feet) and not allow a voltage drop of more than 1% of nominal DC voltage at rated battery current.

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The battery cabinet frame is not referenced to the DC circuit.

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External battery cabinets cannot be used in combination with a UPS containing internal batteries. The 
UPS must be supplied without internal batteries.

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Internal battery strings are to be connected by an authorized Eaton Customer Service Engineer.

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Refer to the appropriate Eaton 93E 80-200kVA, 93E 300-400kVA and 93PM 50-200kW UPS 
Installation and Operation manual listed in corresponding paragraph 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.

Figure 4-5 show the location of the EBC power cable terminals.

For external power wiring requirements, including the minimum size of external wiring, see Table 3-3. 
Wire sizes listed are for copper wiring only.

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 EBC operation by 
any action that includes removal of the earth (ground) connection with loads attached. 

External Cables from EBC breaker to ups are to be provided by the user. Table 3-3 lists the maximum 
rating for continuous-duty cables satisfying the criteria. Other ratings configuration please contact with 
Eaton.

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 All specified wire sizes are 90°C rated copper minimum.

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Replace with same type and number of original battery. Mixing battery letter 
designation and or sizes will damage equipment   and void warranty.

NOTE