Milton-cat D100-6_S 100 kW Automatic Voltage Regulator R438 User Manual download pdf (Page 1)

AUTOMATIC VOLTAGE

REGULATOR – R438

The R438A Automatic Voltage Regulator (AVR) is

an advanced electronic component that provides

closed loop control of the generator output voltage.

Used when the generator is configured with the

AREP excitation system (Option AVR14) or the

Permanent Magnet Generator (PMG) system

(Option AVR12) on the following generators:

– 1000 Series Generators

– 2000 Series Generators

– 3000 Series Generators

With the AREP excitation system the R438 AVR

is powered by two auxiliary windings which

are independent of the voltage detection circuit.

With the PMG option the R438 AVR is powered

by the PMG which is fitted at the rear of

the generator.

SPECIFICATION:

●

Voltage regulation ± 0.5%

●

Short circuit capability: 300% of I-rated for

10 seconds when in AREP or PMG configuration

●

Voltage sensing:

95 to 140 volts (50/60 Hz) or

170 to 260 volts (50/60 Hz) or

340 to 520 volts (50/60 Hz)

●

Response time:

Normal (1 sec) for ± 20% voltage variation or

Rapid (0.3 sec) for ± 20% voltage variation

●

Capable of remote voltage adjustment: ± 5%

LOAD ADJUSTMENT MODULE (LAM):

On load impact, the rotation speed of the

generator set decreases. When it passes below

the preset frequency threshold, the LAM is

activated and causes the voltage to drop by

approximately 15% and consequently the

amount of active load applied is reduced by

approximately 25% until the speed reaches

it’s rated value again.

GENERATORS

LEHE4006-00

1 2

GENERATORS 1

Summary of Contents

Page 1 - GENERATORS

AUTOMATIC VOLTAGEREGULATOR – R438The R438A Automatic Voltage Regulator (AVR) isan advanced electronic component that providesclosed loop control of th

Page 2

Information contained in this publication may be considered confidential. www.cat-ElectricPower.comMarket: N. America Discretion is recommended when d

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Milton-cat D100-6_S 100 kW Automatic Voltage Regulator R438 User Manual Page 1

Browse online or download User Manual for Generators Milton-cat D100-6_S 100 kW Automatic Voltage Regulator R438. Milton CAT D100-6_S 100 kW Automatic Voltage Regulator R438 User Manual

Summary of Contents

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Milton-cat D100-6_S 100 kW Automatic Voltage Regulator R438 User Manual Page 1

Browse online or download User Manual for Generators Milton-cat D100-6_S 100 kW Automatic Voltage Regulator R438. Milton CAT D100-6_S 100 kW Automatic Voltage Regulator R438 User Manual

Summary of Contents

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