AVR MX321 For Stamford Alternators

MX321 Automatic Voltage Regulator
MX321 Automatic Voltage Regulator a is a three phase sensed AVR and forms 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 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. The AVR senses the voltage in the main generator winding and controls the excitation to maintain the generator output voltage within the specified limits compensating for load, speed temperature and power factor of the generator. Three phase RMS sensing is employed for superior voltage regulation. Adjustable 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 and voltage recovery time to improve the response of turbo charged engines. Current limiting may be included to allow control over the amount of sustained short circuit current. Maximum excitation is limited to a safe period by internal shutdown of the AVR output device. This condition remains latched until the generator has stopped. The AVR includes an over voltage protection feature with internal shutdown of the AVR output device, plus the ability to trip an optional excitation circuit breaker if required. Provision is made for the connection of 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 device with compatible output. The AVR has the facility for droop CT connection, to allow parallel running with other similarly equipped generators.

MX321 Automatic Voltage Regulator Product Detail:

Place Of Origin Taizhou,China
Brand Name YAMADA
Brand Stamford
Model Number MX321
Type Brushless
Phase 1
Self excited Yes
Alternator Power <150KW
AVR Can Material PP,ABS,ROHS
Package 50pcs per carton
Individual box Packing Yes, We could print customer’s logo
Produce Ability 3000pieces per day
Certification CE,ROHS
Minimum Order   Quantity 2PCS
Delivery Time 5-25days
Payment Term Wire Transfer(TT),Western Union,   Paypal, LC at sight
Samples Charge
Samples Ship Cost Customer pay, If you have courier No.(UPS,DHL,TNT),Please   send it to us.
LoadingPort Ningbo,Shanghai,  Guangzhou
Harmonized System Code(HS) 8503009090
OEM Manufacture Service Yes

MX321 Automatic Voltage Regulator Technical specification

Voltage      190-264V ac max, 2 or 3 phase
Frequency    50-60 Hz nominal
Voltage      170-220V ac max, 3 phase, 3 wire
Current      3A/phase
Frequency    100-120 Hz nominal
Voltage      max 120V dc
Current      continuous 3.7 A
Intermittent 6A for 10   secs.
Resistance   15 ohms minimum
REGULATION   +/- 0.5% RMS with 4% engine governing

We also provide design service for customers’ demands.