Stamford MX342 AVR

Technical Specification

SENSING INPUT AT RATED SPEED

Voltage 190-264 Vac max, 1 phase, 2 wire

Frequency 50-60 Hz

POWER INPUT (PMG) AT RATED SPEED

Voltage Current Frequency

OUTPUT

Voltage Current

Resistance

REGULATION

+/- 1% average

THERMAL DRIFT

0.03% per deg.

170-220 Vac max, 3 phase, 3 wire 3A/phase
100-120 Hz

max 120V dc
continuous 2.7 A Intermittent 6A for 10 secs. 15 ohms minimum

sensing (see note 1)

C change in AVR ambient (note 2)

SOFT START RAMP TIME

3 seconds

TYPICAL SYSTEM RESPONSE

AVR Response
Filed current to 90% Machine Volts to 97%

EXTERNAL VOLTAGE ADJUSTMENT

10ms 80 ms 300ms

+/-10% with 1 k ohm 1 watt trimmer (see note 3)

UNDER FREQUENCY PROTECTION

Set point 59.5 Hz (see note 4)

Slope linear down to 18 Hz

UNIT POWER DISSIPATION

12 watts maximum

ANALOGUE INPUT

Maximum input +/- 5 Vdc (see note 5)
Sensitivity 1v for 5% Generator Volts (adjustable) Input resistance 1k ohm

QUADRATURE DROOP INPUT

10 ohms burden
Max. sensitivity: 0.07 A for 5% droop 0PF Max. input: 0.33 A

CURRENT LIMIT INPUT

27 ohms burden
Max. sensitivity: 0.28 A (see note 6) Max. input: 0.33 A

OVER EXCITATION PROTECTION

Set point

Time delay

ENVIRONMENTAL

Vibration

75 V dc
10 seconds (fixed)

NOTES

100Hz – 2kHz Operating temperature

Relative Humidity 0-700C Storage temperature

20-100 Hz

50mm/sec
3.3g
-40 to +700C 95% (see note 7) -55 to +800C