AVR MX321

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Xuất xứ: UK
Giá bán: Liên hệ

Mô tả
Bình luận

3 Phase Sensing Permanent Magnet Generator type voltage regulator is a compatible replacement for Newage Stamford MX321 and Onan 305-0823.

MX321 is a three phase sensed Automatic Voltage Regulator and forms part of the excitation system for a brushless generator.Excitation power is derived from a three phased permanent magnet generator(PMG),to isolate the AVR control circuits from the effects of nonlinear loads and to reguce radio frequency interence on the generator terminals.Sustained generator short circuit current is another feature of the PMG system.

The AVR sense the voltage in the main generator winding and controls the excitation to maintain the generator output voltage with the specified limits,compensating for load,speed,temperature and power factor of the generator.Thress phase RMS sensing is emplyed for superior voltage regulation.

Adjustable soft start circuitry is included to provide a smooth controlled build up of generator output voltage.

Specification

Features

Voltage Regulation < ±0.5% RMS
For Use In Parallel Operation
RAMP, DIP, DWELL, DROOP, RMS, U/F, Over Voltage & Over Excitation Adjustment Functions
Over Exc. / Over Volt. & UFRO LED Indicators
Current Limiting Function

Sensing input
voltage	190 -264V ac max,2 or 3 phase
Frequency	50-60 Hz nominal
Power input (PMG)
Voltage	190-220V ac max.3 phase ,3 wire
current	3A/phase
Output
Voltage	Max 120V dc
Current	Continuous 3.7 A ( see note 1 ) Intermittent 6A for 10 secs
resistance	15 ohms minimum
regulation	+/- 0.5% RMS with 4% engine governing (see note 2 )
Thermal drift	0.02% per deg .C change in AVR ambient (note 3 )
Soft start ramp time	0.4 – 4 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 5 k ohm 1 watt trimmer (see note 4 )
Under frequency protection
Set point	95% Hz (see note 5 )
Slope	100-300% down to 30 Hz
Max Dwell	20% volts/s recovery
Unit power dissipation	18 watts maximum
Analogue input
Maximum input	+/- 5V dc (see note 6)
sensitivity	1v for 5% generator volts (adjustment )
Input resistance	1k ohm
Quadrature input
10 ohms burden
Max sensitivity	0.22 A for 5% droop OPF
Max input	0.33 A
Current voltage detection input
Set point	300V .time delay:1 sec(fixed )
CB trip coil volts	10 – 30 V dc
CB trip coil resistance	20-60 ohms
Over excitation protection
Set point	75 V dc
Time delay	8-15 seconds( fixed )
environmental
vibration	20 – 100 Hz 50mm/sec
	100Hz – 2k Hz 3.3g
Operating temperature	-40 to +70 degree
Relative humdity 0-70 degree	95% (see note 7 )
Storage temperature	-55 to + 80 degree