R250 Automatic Voltage Regulator AVR Compatible With Leroy Somer LSA TAL Shunt Excitation Generator

AVR R250 High Quality Replace Leroy Somer Brushless Generator Automatic Voltage Regulator

Main Characteristics:

R250,10000-12943,1000012943,922-197,922197

Listing Description:

Durable and convenient.

Simple design and easy to use.

And We will provide you with high quality products

Product Specifications:

Voltage regulation: around +/-0.5%

Frequency:50/60 Hz nominal

Voltage:63V DC

Current:continuous 8A dc

Intermittent 10A for 10 secs

Voltage supply/sensing range 85 to 139 V (50/60Hz)

Rapid response time (500ms) for a transient voltage variation amplitude of +/-20%

Voltage setting p1

Stability setting p2

Supply protected with an 8A fuse, slow action(supports 10A for 10s)

General description

AVR R250 is a half-wave phase-controlled thyristor type Automatic Voltage Regulator (AVR) and form part of the excitation system for a brush-less generator.

In addition to regulating the generator voltage, the AVR circuitry includes under-speed and sensing loss protection features. Excitation power is derived directly from the generator terminals.

Positive voltage builds up from residual levels is ensured by the use of efficient semiconductors in the power circuitry of the AVR.The AVR is linked with the main stator windings and the exciter field windings to provide closed-loop control of the output voltage with load regulation of +/- 1.0%.

In addition to being powered from the main stator, the AVR also derives a sample voltage from the output windings for voltage control purposes. In response to this sample voltage, the AVR controls the power fed to the exciter field, and hence the main field, to maintain the machine output voltage within the specified limits, compensating for load, speed, temperature, and power factor of the generator.