|
|
 |
|
Features |
|
Product description: |
|
MX341 is a two phase sensed Automatic Voltage Regulator and forms part of the excitation 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 non-
linear loads and to reduce radio frequency interference on the generator terminals. Sustained generator short circuit current is another feature of the PMG system. | |
Technical parameters
SENSING INPUT
Voltage 190-264V ac max, 1 phase, 2 wire
Frequency 50-60 Hz nominal
POWER INPUT (PMG)
Voltage 140-220V ac max, 3 phase, 3 wire
Current 3A/phase
Frequency 100-120 Hz nominal
OUTPUT
Voltage max 120V dc
Current continuous 2.7 A
Intermittent 6A for 10 secs.
Resistance 15 ohms minimum
REGULATION
+/- 1% (see note 1)
THERMAL DRIFT
0.03% per oC change in AVR ambient (note 2)
SOFT START RAMP TIME
3 seconds
TYPICAL SYSTEM RESPONSE
AVR Response 10 ms
Filed current to 90% 80 ms
Machine Volts to 97% 300 ms
EXTERNAL VOLTAGE ADJUSTMENT
+/-10% with 1 k ohm 1 watt trimmer (see note 3)
UNDER FREQUENCY PROTECTION
Set point 95% Hz (see note 4)
Slope 170% down to 30 Hz
UNIT POWER DISSIPATION
12 watts maximum
ANALOGUE INPUT
Maximum input +/- 5V dc (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
OVER EXCITATION PROTECTION
Set point 75 V dc
Time delay 10 seconds (fixed)
ENVIRONMENTAL
Vibration 20-100 Hz 50mm/sec
100Hz – 2kHz 3.3g
Operating temperature -40 to +70C
Relative Humidity 0-70oC 95% (see note 6)
Storage temperature -55 to +80oC |
|
|
