MX341 Alternator Voltage Regulator
MX341 alternator voltage regulator is a two phase sensed product, and it is part of the excitation system for a brushless 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.
Technical Parameters
| Sensing Input | Voltage | Max. 190-264VAC, 1 phase, 2 wire | |
| Frequency | 50-60Hz nominal | ||
| Power Input (PMG) | Voltage | Max. 140-220VAC, 3 phase, 3 wire | |
| Current | 3A/phase | ||
| Frequency | 100-120Hz nominal | ||
| Output | Voltage | Max. 120VDC | |
| Current | Continuous 2.7A Intermittent 6A for 10 seconds | ||
| Resistance | Min. 15 ohms | ||
| Regulation | ±1% (note 1) | ||
| Thermal Drift | 0.03% per degree C change in AVR ambient (note 2) | ||
| Soft Start Ramp Time | 3 seconds | ||
| Typical System Response | AVR response | 10ms | |
| Filed current to 90% | 80ms | ||
| Machine volts to 97% | 300ms | ||
| External Voltage Adjustment | ±10% with 1kΩ 1W trimmer (note 3) | ||
| Under Frequency Protection | Set point | 95% Hz (note 4) | |
| Slope | 170% down to 30 Hz | ||
| Unit Power Dissipation | Max. 12 watts | ||
| Analogue Input | Max. input | ±5 VDC (note 5) | |
| Sensitivity | 1V for 5% generator volts (adjustable) | ||
| Input resistance | 1kΩ | ||
| Quadrature Droop Input | 10 ohms burden | ||
| Max. sensitivity | 0.07A for 5% droop 0PF | ||
| Max. input | 0.33A | ||
| Over Excitation Protection | Set point | 75 VDC | |
| Time delay | 10 seconds (fixed) | ||
| Environmental | Vibration | 20-100Hz | 50mm/sec |
| 100Hz–2kHz | 3.3g | ||
| Operating temperature | -40 ~ 70°C | ||
| Relative humidity 0-70°C | 95% (note 6) | ||
| Storage temperature | -55 ~ 80°C | ||
Note
1. With 4% engine governing.
2. After 10 minutes.
3. Applies to Mod status D onwards. Generator de-rate may apply. Check with factory.
4. Factory set, semi-sealed, jumper selectable.
5. Any device connected to the analogue input must be fully floating (galvanically isolated from ground), with an insulation strength of 500V ac.
6. Non condensing.
This alternator voltage regulator can detect the voltage in the main generator winding and control the power fed to the exciter stator and hence the main rotor to maintain the generator output voltage within the specified limits, compensating for load, speed, temperature and power factor of the generator. Meanwhile, soft start circuitry is included to provide a smooth controlled build up of generator output voltage.
A frequency measuring circuit continually monitors the shaft speed of the generator and provides under-speed protection of the excitation system by reducing the generator output voltage proportionally with speed below a pre-settable threshold. A further enhancement of this feature is an adjustable volts per hertz slope to improve engine recovery time on turbo charged engines. Uncontrolled excitation is limited to a safe period by internal shutdown of the output device. This condition remains latched until the generator has stopped.
Provision is made for the connection of a remote voltage trimmer, allowing the user fine control of the generator's output. An analogue input is provided allowing connection to a Newage power factor controller or other external devices with compatible output. This voltage regulator also has the facility for droop CT connection, to allow parallel running with other similarly equipped generators.
As an experienced alternator voltage regulator manufacturer and supplier in China, Dingol provides a wide range of products that includes AVR / alternator regulator, synchronous generator, diesel 2-pole brushless alternator, and more.
Related Names
Electric Tension Controlling Tool | Electric Voltage Dominating Device | Electric Pressure Governing Parts
Links：https://globefindpro.com/products/62072.html
