Manual EA20S Caterpillar
Manual EA20S Caterpillar
Manual EA20S Caterpillar
The EA20S is a Special Generator Voltage Regulator that uses UltraFast CoPack IGBTs Power Devises
in its power stage . This design gives us the flexibility for using PMGs with varied frequencies outputs
from diverse alternator manufactures. In addition, A1 and A2 terminals for use in remote bias and
other terminals adding the ability to use 1 and 5 Amp CTs
.
1. Specifications
Sensing Input External Volts Adjustment
Terminal 0 to 110V = 95 ~ 135V ±10% @ 1KΩ
Terminal 0 to 220V = 180 ~ 250V
Terminal 0 to 380V = 360 ~ 515V Power Input X1、
、X2 Z1、 、Z2
Frequency 50/60 Hz, Jumper selectable 45 ~ 600HZ
154.0
130.0
X1
203.0
180.0
A1 A2 VR VR S1 S2 S3
Mechanical Specifications
AV R can be moun ted directly on the engine, genset, switchgear or control pan el that conforms to the
moun ting specification.
All voltage readings are to be taken with an average-read ing voltmeter Meggers and high-potential test
equipment must not be used. Use of such equipment could damage the AV R.
Installation is straightforward, remove the old regulator and plug new one in its place, the small plug is not used
and not installed (it is for data acquisition only). The regulator comes prewired for use in 220-volt sensing circuits if
you need 380 or 480-volt sensing change the E2 wire to another position.
Adjust your voltage and stability pots. Stability is best adjusted with a analog voltmeter connected to the output of
the generator and changing the load of the generator and adjusting the STAB pot for minimum needle movement.
2. WIRING
3. ADJUSTMENTS
1. Sensing Input terminals (single phase)
0 to 110V TRIM :Analog Voltage Input Adjustment A1, A2
0 to 220V VOLT :Voltage Adjustment.
0 to 380/480V
DROOP :Droop Adjustment.
2. F+ F- : Field Output Terminals
DIP :To set the frequency related voltage dip
3. X1, X2, Z2 PMG power input terminals. STAB :Stability Adjustment.
from 45 to 600Hz. See Drawings UFRO :UFRO Knee Point set.