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X1
Rectifier input
X4/2/-
External battery - for UPM1
X2
Bypass input
X4/4/-
External battery - for UPM2
X3
UPS output
TB20
External battery trip and aux
signal (N.O.) for UPM1
X4/1/
+
External b for UPM1
TB21
External battery trip and aux
signal (N.O.)
X4/3/
+
External b for UPM2
PE
Protective earth
Figure 14: Power cable terminals in the 93PS 40 kW frame with a common
battery
X1
Rectifier input
X4/-
External battery -
X2
Bypass input
TB20
External battery trip and aux signal
(N.O.)
X3
UPS output
PE
Protective earth
X4/+
External b
© Eaton Corporation plc 2020. All rights reserved.
Revision: 006
Document ID: P-164000493
52 (126)
Eaton 91PS/93PS UPS 8–40 kW
User’s and Installation Guide