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 battery + for UPM1 TB21 External battery trip and aux
signal (N.O.)
X4/3/
+
External battery + 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 battery +
© 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