The SX440 is a half-wave phase-controlled thyristor type Automatic Voltage Regulator and forms part of the excitation system for a brushless generator.
INPUT
Voltage: 190 – 264V ac
Frequency: 50-60 Hz nominal. Phase:1 Wire: 2
OUTPUT
Voltage: max 90V dc at 207 V ac input
Current: continuous 4A dc
Intermittent 6A for 10 secs
Resistance: 15 ohms minimum
REGULATION: +/- 1%
THERMAL DRIFT: 0.04% per deg. C change in AVR ambient.
TYPICAL SYSTEM RESPONSE
AVR response 20ms
Field current to 90% 80ms
Machine Volts to 97% 300ms
EXTERNAL VOLTAGE ADJUSTMENT: +/-10% with 1 k ohm 1 watt trimmer
UNDER FREQUENCY PROTECTION: Set point:95% Hz. Stope:170% down to 30 Hz
UNIT POWER DISSIPATION:12 watts maximum
BUILD UP VOLTAGE: 4 Volts @ AVR terminals
ANALOGUE INPUT: Maximum input:+/-5V dc
Sensitivity: 1v for 5% Generator Volts
Input resistance 1k ohm
