Relay/Transformer (R/T Box); Standard - GE ZTS Series Operation And Maintenance

Relay/Transformer (R/T Box)

Standard Transition
Each Entelli-Switch 250 microprocessor based ATS
controller requires a relay/transformer box to apply line
voltage to the ATS operator via coil control relays. Also
required is power for the Entelli-Switch 250 printed circuit
board and an application of sensing voltage proportional
to line voltage. This is accomplished by the relay trans-
former box. This method of switching operator voltage
and applying power and sensing voltage to the printed
1
2
(inside)
3
Figure 12
40-225 Amp Molded Power Section
Transformer Usage
R/T Box Primary
Assembly Voltage
Part No. at 50/60 Hz
57P-1015 120V
57P-1016 208-220V
57P-1017 230-240V
57P-1018 277V
57P-1019 380-400V
57P-1020 416-440V
57P-1021 460-480V
57P-1022 575-600V
Bill of Material
Item Part No.
1 See Chart Transformer (1 VA)
2 See Chart Transformer (25 VA)
3 K-1274 Relay Flange Mounted
GE Zenith Controls
(see Figure 12)
1 VA 25 VA
XFMR XFMR
Part No. Part No.
K-3216 K-3224
K-3217 K-3225
K-3218 K-3226
K-3219 K-3227
K-3220 K-3228
K-3221 K-3229
K-3222 K-3230
K-3223 K-3231
Description Qty
2
2
2
ZTS / ZTSD Operation and Maintenance Manual (71R-3000)
circuit board isolates the MX250 from the line voltage,
further protecting the controller from harmful line tran-
sients. Two versions of the R/T box exist depending on
the type of ATS (standard transition or delayed transition).
The following layout drawings of the R/T Box compo-
nents (standard and delayed transition) include a bill of
materials for replacement parts. Schematics are included
to indicate proper wiring.
PRI.
PRI.
SEC.
SEC.
40-3000 Amp - All Other Standard Types
Transformer Usage
R/T Box Primary
Assembly Voltage
Part No. at 50/60 Hz
50P-1026 120V
50P-1027 208-220V
50P-1028 230-240V
50P-1029 277V
50P-1030 380-400V
50P-1031 416-440V
50P-1032 460-480V
50P-1033 575-600V
Bill of Material
Item Part No.
1 See Chart Transformer (25 VA)
2 See Chart Transformer (1 VA)
3 K-1260 Coil Control Relay (24V)
PRI.
1
SEC.
2
3
Figure 13
(see Figure 13)
1 VA 25 VA
XFMR XFMR
Part No. Part No.
K-3216 K-3224
K-3217 K-3225
K-3218 K-3226
K-3219 K-3227
K-3220 K-3228
K-3221 K-3229
K-3222 K-3230
K-3223 K-3231
Description Qty
2
2
2
21