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Stamford AVR SX440

Technical specification

INPUT
Voltage: 170-250V ac max
Frequency: 50-60 Hz nominal
Phase: 1
Wire: 2

OUTPUT
Voltage: Max 90V dc at 207V ac input
Current: Continuous 4 A dc
Transient: 6 A for 10 secs
Field Resistance: 15 ohms minimum
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REGULATION: ( See Note 1) + / -1.0%

THERMAL DRIFT
( after 10 min)
1% for 40º C change in AVR ambient

TYPICAL SYSTEM RESPONSE
AVR response: 20 ms
Filed current to 90% : 80 ms
Machine Volts to 97% : 300 ms

EXTERNAL VOLTAGE ADJUSTMENT( see note 2)
+ / -8% with 1 k ohm 1 watt trimmer

UNDER FREQUENCY PROTECTION
Set point ( see note 3) : 95% Hz
Slope: 170% down to 30 Hz

UNIT POWER DISSIPATION
12 watts maximum

BUILD UP VOLTAGE
3.5 Vac @ AVR terminals

ACCESSORY INPUT
+ / - 1V = + / - 13% change in output volts

QUADRATURE DROOP SENSITIVITY
Maximum sensitivity ( 10 Ohm Burden)
0.07A for 5% droop @ 0p. F.

ENVIRONMENTAL
Vibration 20 -100 Hz 50mm/ sec
100Hz -2kHz 3.3g
Operating temperature: -40º C to + 70º C
Relative Humidity: 0-60º C 95%
Storage temperature: -55º Cto + 80º C