Eaton 93PS-8(20)-20(-C)

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1 X1: rectifier input, N 12 X3: UPS output, L3

2 X1: rectifier input L1 13 X4: external battery cable + **

3 X1: rectifier input L2 14 X4: external battery cable – ***

4 X1: rectifier input L3 15 TB20: external battery trip

5 X2: bypass input, N 16 TB21: external battery trip *

6 X2, bypass input, L1 17 PE

7 X2: bypass input L2 18 X4:1: external battery cable + *

8 X2, bypass input L3 19 X4:2: external battery cable - *

9 X3: UPS output, N * Only in models with the separate battery

option

10 X3: UPS output, L1 ** X4:3 in models with the separate battery

option

11 X3: UPS output, L2 *** X4:4 in models with the separate battery

option

For the external separate battery option, there are separate terminals for both

battery banks (cabinets). These terminals replace terminals 5 and 10 shown in

Figure

Note: External overcurrent protection is not provided by this product, but is

required by codes. Refer to Table

for wiring requirements. If a lockable

output disconnect is required, it must be supplied by the user.

Table 11: UPS power cable terminal torques

UPS frame Function Tightening torque

93PS 20 kW X1, X2, X3: L1, L2, L3, N 1.6

X4: battery +/- 3.0

PE (ground) 3.0

93PS 40 kW X1, X2, X3: L1, L2, L3, N 6.0

X4: battery +/- 6.0

PE (ground) 3.0

CAUTION

To reduce the risk of a fire, connect only to a circuit that is provided with

maximum input circuit breaker current ratings from Table

in accordance

with the national and local installation rules.

The line-to-line unbalanced output capability of the UPS is limited only by the full

load per phase current values for AC output to critical load shown in Table

The recommended line-to-line load unbalance is 50% or less.

Eaton 93PS UPS 8–40 kW

User's and installation guide

Eaton 93PS-8(20)-20(-C) - Page 44