1-4
Figure 1-1. Typical Model Number.
Table 1-3. Model Number Designations.
Sample Model Number
SR4 A 2 B 15 B 3 A
SR4
SR8
A-Surface
mounted.
2-Parallel
provisions with
adjustable
slide wire
resistor.
B-Build-up
Relay.
15-Selectable
1-phase
sensing.
16-Selectable
3-phase
sensing w/
Faston
connectors.
B-Cover. 3-Voltage
Adjust
Rheostat
supplied
separately
with
regulator.
A-For use on
all brush-type
and most
brushless
exciters on
generators
rated over
150 kW.
E-For use
with
brushless
exciters
(primarily on
generators
rated 150 kW
or less) or
with all rotary
exciters.
The above style chart represents our standard product offering.
MODEL AND POWER RATING
VOLTAGE BUILD-UP PROVISIONS
PARALLEL PROVISIONS
SINGLE-PHASE SENSING
ENCLOSURE
TYPE OF VOLTAGE ADJUSTMENT
TYPE OF STABILITY CIRCUIT
SR4A 2 B 15 B 3 E
D2556-06
02-20-97
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