CAUTION
The SCP 250 should not be put into operation until after the motor is up to rated
speed and the field is excited.
Isolated Bus Applications
The SCP 250 is not intended for use on isolated bus systems (systems providing power independent of a
larger power source, such as a utility). In an isolated bus system using precise voltage regulators with
parallel compensation, the var load is automatically divided between the generators by the regulator and
its associated paralleling circuit.
PART NUMBERS
Table 1-1 lists the model numbers, part numbers, and application information for standard-order SCP 250
controllers.
Table 1-1. SCP 250 Part Numbers
Model Number Part Number Application
SCP 250-G-60 9 1100 00 109 60 Hz generators
SCP 250-G-50 9 1100 00 110 50 Hz generators
SCP 250-M-60 9 1100 00 111 60 Hz motors
SCP 250-M-50 9 1100 00 112 50 Hz motors
SPECIFICATIONS
SCP 250 electrical and physical specifications are listed in the following paragraphs.
Voltage Sensing and Input Power
60 Hz Voltage Range: 120 to 139 Vac, 208 to 240 Vac, 416 to 480 Vac, 520 to 600 Vac, ±10%
50 Hz Voltage Range: 100 to 120 Vac, 190 to 208 Vac, 380 to 415 Vac, 440 to 500 Vac, ±10%
Configuration: Single-phase
Common Terminal: E1
Current Sensing
Nominal Rating: 3 to 5 Aac
15 Second Rating: 30 Aac
Configuration: Single-phase
Burden: 3 VA
Terminals: 1, 2
Output Signal
Low Range: ±1 to ±3 Vdc (jumper installed at terminals X and Y)
High Range: ±1 to ±9 Vdc (jumper removed)
Terminals: A, B, C
Enable Contact
Rating: 60 Vac, 39 mA
Terminals: J, K
Control Accuracy
Power Factor: Reactive component of current is proportional to real component within
±5% of maximum rated current.
Vars: Reactive component of current maintained at programmed level within
±5% of maximum rated current.
1-2 SCP 250 General Information 911000099Y Rev T
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