Automatic Voltage Regulator AVR Mx321 Mx341 As440 As480 As540 Sx440 Sx460 Stamford Leroy Somer Cat Denyo Marathon Diesel Generator Set AVR Replacement

• Current Type: AC
• Phase: Three Phase
• Frequency Characteristics: Low Frequency
• Usage: SVC
• Frequency: Low Frequency
• Size: Small
• Model NO.: Mx321 Mx341 As440 As480 As540 Sx440 Sx460
• Iron Core Shape: C
• Power Source: Switching Regulated Power Supply
• Application Range: Industrial and Mining Enterprises
• Brand: Leroysomer
• Transport Package: Carton
• Trademark: CUMMINS
• Origin: China
• HS Code: 8421230000
• Production Capacity: 9000000/Year

Product Description

MX321  SX440 SX460
Stamford/Leroysomer/Kanpor AVR (Automatical voltage regulator) for brushless alterantor

 

Product Description

SX460 is a half-wave phase- controlled thyristor type Automatic Voltage Regulator and forms part of the excitation system for a brushless generator. 

In addition to regulating the generator voltage, the AVR circuitry includes under speed and sensing loss protection to ensure safe, reliable control of the generator. 

Positive voltage build up from residual levels is ensured by the use of proficient semiconductors in the power circuitry of the AVR. Which is linked with the main stator windings and the exciter field windings to offer closed loop control of the output voltage with load regulations of +/- 1.5%

Stability adjustment    

Under frequency roll off adjustment 

 

SX460
Input	Voltage	Jumper selectable  95-132V ac or 190-264V ac
	Frequency	50-60 Hz nominal
	Phase	1
Output	Voltage	Max 90V dc at 207V ac input
	Current	Continuous 4A dc, intermittent 6A for 10 secs
	Resistance	15 ohms minimum
Regulation		+/- 1.0%
Thermal Drift		0.05% per deg. C change in AVR ambient
Typical system response	AVR response	20ms
	Filed current to 90%	80 ms
	Machine Volts to 97%	300ms
External voltage adjustment		+/-10% with 1 k ohm 1 watt trimmer
Under frequency protection	Set point	95% Hz
	Slope	170% down to 30 Hz
Unit power dissipation		12 watts maximum	10 watts maximum
Build up voltage		4 Volts @ AVR terminals
Environmental	Vibration	20-100 Hz,50mm/se
		100Hz - 2kHz, 3.3g
	Operating temperature	-40 to +70 Deg. C
	Relative Humidity 0-70 Deg.   C	95%
	Storage temperature	-55 to +80 Deg. C

*Quadrature droop adjustment

*AVR Voltage adjustment

*Stability adjustment

*LAM Threshold (underspeed) adjustment

*Excitation ceiling adjustment

*Selection of single phase or three phase*

*voltage sensing

*Selection of normal or rapid response time

*50 Hz or 60 Hz frequency option

*Remote voltage adjustment option

*LAM enable/disable option

*Alternator frame selection

*Excitation system selection

Specificaion

Input voltage: 70-140V AC, (PMG, or auxiliary 
winding, single, three phases)
Reaction is measured : 90-480V AC
MAX. output :DC 10A 125V
Function: Built-in low-speed , over excitation
LAM, 
REGULATION: +/-0.5%


 

Product Description

 *3 Phase Sensing Permanent Magnet Generator type voltage regulator is a compatible replacement for Newage 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.

 

Sensing Input	Voltage	190-264V ac max, 2 or 3 phase
	Frequency	50-60 Hz nominal
Power Input(PMG	Voltage	170-220V ac max, 3 phase, 3 wire
	Current	3A/phase
	Frequency	100-120 Hz nominal
Output	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
Thermal Drift		0.02% per Deg. C change in AVR ambient
Soft Staret Ramp Time		0.4 - 4 seconds
Typical system response	AVR response	20ms
	Filed current to 90%	80 ms
	Machine Volts to 97%	300ms
External voltage adjustment		+/-10% with 5k ohm 1 watt trimmer
Under frequency protection	Set point	95% Hz
	Slope	100%-300% down to 30 Hz
	Max. Dwell	20% volts/S recovery
Unit power dissipation		18 watts maximum
Analogue Input	Maximum input	+/- 5 Vdc
	Sensitivity	1v for 5% Generator Volts (adjustable)
	Input resistance	1k ohm
Quadrature Droop Input		10 ohms burden
		Max. sensitivity: 0.22 A for 5% droop 0PF
		Max. input: 0.33A
Environmental	Vibration	20-100 Hz,50mm/se
		100Hz - 2kHz, 3.3g
	Operating temperature	-40 to +70 Deg. C
	Relative Humidity 0-70 Deg.   C	95%
	Storage temperature	-55 to +80 Deg. C