Power Master R250 Automatic Voltage Regulator

Power Master R250 Automatic Voltage Regulator

R250 Automatic Voltage Regulator. AC 80-140V (50 / 60Hz). Output: DC 90V / 6A / 10S

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POWER INPUT

AC 80-140V (50 / 60Hz)

OUTPUT
DC 90V / 6A / 10S

WEIGHT

0.7 POUNDS

SIZE

7 x 3 x 4 Inches

VOLTAGE

190-240 V AC.

Key Features
Description

R250 AVR controls the excitation current according to the alternator’s output voltage.With a very simple conception, the shunt excitation

alternator is auto excited with a R250 andexcitation alternator does not have a short circuit .

FREQUENCY

50/60Hz

VOLTAGE BUILD-UP

AVR terminal residual voltage >5V AC.

RESISTANCE

Min. 15Ω / Max. 100Ω.

Power Input - AC 80-140V (50 / 60Hz)
Output - DC 90V / 6A / 10S
Detection voltage input - AC 115V
Voltage regulation rate - ≤ ± 1%
External voltage trimming - 1K / 2W potentiometer ± 10%
Voltage sensing - 85-139, 1 phase
Voltage - 190-240 V AC.
Frequency - 50/60Hz

Current -◖Continuous 3.5 A / ◖intermittent: 7 A 10 seconds (52/105 Vdc).
Resistance - min. 15Ω, max. 100Ω.
Voltage build-up - AVR terminal residual voltage >5V AC.
Operating temperature- -40.0°F to +140.0°F.
Storage temperature - -85.0 °F to +185.0 °F.
External voltage regulation -±10%, with 2kΩ 1W trimmer.

R250 AVR controls the excitation current according to the alternator’s output voltage.With a very simple conception, the shunt excitation

alternator is auto excited with a R250 andexcitation alternator does not have a short circuit .

Stability Adjustment

To avoid voltage oscillations, the tip threshold for the "LAM" function should be set approximately 2 Hz below the lowest frequency in steady state.

Droop Adjustment

Special: the factory setting 48Hz 2U/F gradient: a special programme is possible on request. This programme must be specified before ordering. during the project study

Trim Adjustment

The threshold position (50 Hz - 60 Hz) to action the UF fonction as well as the LAM setting type is selected using the potentionmeter.

The LAM system is integrated in the A.V.R. It is active as standard. It can be adjusted to 13% or 25%.

On application of a load, the rotation speed of the generator set decreases. When it passes below the preset frequency threshold, the l 3M causes the voltage to drop by approximately 13% or 25% and consequently the amount of active load applied is reduced by approximately 25% to 50%, until the speed reaches its rated value again.