GE Industrial Solutions Entelli-Switch 250 - Manual (Page 26)

■ 26 GE Zenith Controls ■ Entelli-Switch 250 Operation and Maintenance Manual (71R-2000A)
Standard and Delay Transition
Each MX250 microprocessor based ATS controller
requires a Controls Power Supply (CPS) to apply line
voltage to the ATS operator via SCRs. Also required is
power for the MX250 printed circuit board and an
application of sensing voltage proportional to line voltage.
Controls Power Supply (CPS)
This is accomplished by the Controls Power Supply (CPS).
This method of switching operator voltage and applying
power and sensing voltage to the printed circuit board
isolates the MX250 from the line voltage, further protecting
the controller from harmful line transients.
Primary CPS CPS
Voltage Assembly Board
at 50/60 Hz Part No. No.
120V 50P-1224 50P-1200
208-220V 50P-1225 50P-1201
230-240V 50P-1226 50P-1202
277V 50P-1227 50P-1203
380-400V 50P-1228 50P-1204
416-440V 50P-1229 50P-1205
460-480V 50P-1230 50P-1206
575-600V 50P-1231 50P-1207