MX341 is a two phase sensed Automatic Voltage Regulator(AVR) and forms part of the exciation system for a brush-less generator.
Excitation power is derived from a three-phase permanent magnet generator(PMG),to isolate the AVR control circuits from the effects of nonlinear loads and to reduce radio frequency interference on the generator terminals.sustained generator short circuit current is another feature of the PMG system.
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.
The AVR has the faclity for droop CT connection,to allow parallel running with other similarly equipped generators.
Voltage: 190-264V ac max, 1 phase 2 wire
Frequency: 50-60HZ nominal
Voltage: 140-220 V ac max, 3 phase,3 wire
Frequency: 100-120HZ nominal
Voltage: max 120V dc
Current: continuous 2.7A dc, Intermittent 6A for 10 secs
Resistance: 15 ohms minimum
0.03% per deg.C change in AVR ambient
SOFT START PAMP TIME
TYPICAL SYSTEM RESPONSE
AVR respone 10ms
Filed current to 90% 80ms
Machine Volts to 97% 300ms
EXTERNAL VOLTAGE ADJUSTMENT
+/-10% with 1k ohm 1 watt trimmer
UNDER FREQUENCY PROTECTION
Set point 95%HZ
Slope 170% down to 30HZ
UNIT POWER DISSIPATION
12 watts maximum
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
OVER EXCITATION PROTECTION:
Vibration: 20-100HZ, 50mm/sec, 100Hz 2kHz, 3.3g
Operating temperature -40 to +70¡ãC
Relative Humidity 0-70¡ãC 95%
Storage temperature -55 to +80¡ãC
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