Stamford AVR MX321, Stamford Automatic Voltage Regulator, Stamford Voltage Regulator, Stamford Part, Stamford Spare Part, Automatic Voltage Regulator(AVR), Generator AVR.

 

The MX321 has all the features of the MX341, additionally achieving voltage regulation in the order of 0.5 %. There is also the facility for 3-phase RMS sensing, built in overvoltage protection and optional short circuit current level adjustment.

The combination of PMG providing an isolated power source and the MX321's RMS sensing makes an ideal arrangement for supplying the non-linear loads associated with UPS systems.

 

We supply the following STAMFORD, LEROY SOMER, MARTHON AVR:

 

1. STAMFORD AVR:

1) SX460
2) SX440
3) MX341
4) MX321

5)AVR-8A
6)AVR-12A
7)AVR-15A

 

2. LEROY SOMER AVR
1) R230
2) R438
3) R448
4) R449

 

3. MARTHON AVR:

SE350

 

STAMFORD AVR MX321

1. Specification:

MX321 is a half-wave phase-controlled thyristor type Automatic Voltage Regulator (AVR) and forms part of the excitation system for a brushless alternator with PMG, such as Stamford or Stamford technical alternator.

 

2. Technical specification:

Input

        Voltage       170~220VAC, 3 phase 3A(PMG)

        Frequency   50~60Hz

Induction detect   170~250VAC, 2 phase or 3 phase

Output

        Voltage       Max 120VDC

        Current        Continuous 3.7ADC

                           Intermittent 6A for 10 seconds

        Protection    Low speed, over excitation, over-voltage, over-current, LAM

Regulation      +/- 1.0%