INTRODUCTION

The WT-2 Voltage Regulator is an encapsulated unit contained in a plastic case.The regulator controls the dc exciter field power of conventional, 50 or 60 Hz brushless generators that have a max 63 Vdc exciter field to regulate the generator output voltage.Regulation is provided by sensing the generator

output voltage, converting it to a dc signal and comparing the signal to a reference voltage signal.

An error signal is developed and used to control the dc field power in order to maintain a constant

generator output.

ELECTRICAL SPECIFICATIONS

Output Power(DC)

6 A at 63 Vdc maximum continuous with a 240

Vac input.

Max Output Current(DC)

15 A maximum, 1 minute

Exciter Field DC Resistance

6.0 ohms minimum.

Input(AC)

180 to 300 Vac, single-phase, 50/60 Hertz.

Burden: 1000 VA maximum at 240 Vac power.

Sensing Voltage(AC)

180 to 277 Vac at 220 Vac single-phase system;312 to

480 at 400 Vac three phase system, 50/60 Hertz.

Burden: 5 VA.

Voltage Adjust Range

180 to 277 Vac using the internal voltage adjust.

The external voltage adjust provides a ±10%

Regulation Accuracy

Plus/minus 0.5%.

Voltage Drift

<±1% voltage variation for a 50°C (90°F) change.

Response Time

<1 cycle

Voltage Build-Up

Internal provisions for automatic build-up from

generator residual voltages as low as 9 Vac at 35 hertz.

Power Dissipation

40 W maximum.

Paralleling Provisions

CT input for customer supplied 1 Amp nominal CT.

Adjustable droop from 0 to 5% with 5 Amps input at 0.8

power factor.

SPECIFICATIONS

Operating Temperature

-25ºC ~ +60ºC.

Vibration

Withstands 1.2 Gs at 5 to 26 Hz; 0.036" double

amplitude at 27 to 53 Hz; 5 Gs at 53 to 1000 Hz.

Shock

Withstands up to 15 Gs in each of three mutually

perpendicular axes.

Weight

0.4 kg net.

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