The AVR has the faclity for droop CT connection,to allow parallel running with other similarly equipped generators.
SX440 is a two phase sensed Automatic Voltage Regulator(AVR) and forms part of the exciation system for a brush-less generator.
The AVR senses the voltage in the main generator winding and control the power fed to the exciter stator and hance the main rotor to maintain the generator output voltage within the specified limits, compensating for load sprrd,temperature and power factor of the generator.
Vibration:20 -100HZ (50mm/sec), 100Hz -2kHz
Colour: Black
Material: metal + PC
Sensing Input:
Voltage: 190-264V ac max, 1 phase 2 wire
Frequency: 50-60HZ nominal
Power inpot
Voltage: 140-220 V ac max, 3 phase,3 wire
Current: 3A/phase
Frequency: 100-120HZ nominal
Out put
Voltage: max 120V/DC
Current: continuous 2.7A/DC
Intermittent 6A for 10 secs
Resistance: 15 ohms minimum
Regulation: +/-1%
Thermal drift: 0.03% per deg.C change in AVR ambient
Soft start pamp time: 3 sec
Typical system response
AVR respone: 10ms
Filed current to 90%: 80ms
Machine Volts to 97%: 300ms
External voltage adjustment: +/-10% with 1k ohm 1W trimmer
Under frequency protection
Set point: 95%HZ
Slope: 170% down to 30HZ
Unit power dissipation: 12 watts maximum
Analogue input
Maximum input: +/-5V/DC
Sensitivity 1V for 5% Generator Volts(adjustable)
Input resistance 1k ohm
Quadrature droop input
10 ohms burden
Max.sensitivity:0.07A for 5% droop OPF
Max.input:0.33A
Over excitation protection
Set point:75V/DC
Time relay:10 sec
Environmental
Vibration:20 -100HZ (50mm/sec), 100Hz -2kHz
Operating temperature: -40oC to +70 oC
Relative Humidity: 95%
Storage temperature: -55oC