Genuine SR7 AVR Automatic Voltage Regulator Stabilizer programmable integrated circuit Diesel Generator set alternator part

AVR SR7-2

SR7 self excited half wave type Genset Automatic Voltage Reg

ulator is a direct replacement avr for Mecc Alte SR7-1 and SR7-2

Wide Sensing Voltage Range 80~350 VAC

Wide Power Input Range 80~270 VAC, Accepts Power Input from Main Winding or Auxiliary Winding

Under Frequency Protection Indication LED

Over Excitation Protection and Indication LED

EMI Suppression

Specifications

Model NO. SR7

Sensing Input 80~350 VAC single phase 50/60 Hz

Power Input Voltage 50~270 VAC

Frequency 50/60 Hz

Output Voltage 63 VDC @ 220 VAC input

Output Current Continuous 6A, Max. Intermittent 7A for 10 sec.

Voltage Regulation < ±1% (with 4% engine governing)

Voltage Build-up Residual voltage above 5 VAC 25 Hz

External Volts Adjustment 100 K Ohm 1/2 watt ±7%

Unit Power Dissipation Max. 5 watt

Under Frequency Protection Adjustable range 42~60 Hz

Over Excitation Protection 40~Max. VDC @ 0.3~20 sec.

EMI Suppression Internal electromagnetic interference filtering

Excitation Winding Resistance DC Resistance 10~100 Ohm

Environment Operating Temperature : -40~65 °C

Storage Temperature : -40~80 °C

Relative Humidity : Maximum 95%

Vibration : 1.5G @ 5~30 Hz / 5.0G @ 30~500 Hz

AVR Controls Function VOLTS : Voltage Adjustment

STAB : Stability Adjustment

HZ. : Under Frequency Setting

AMP. : Over Excitation Setting

U/F : Under Frequency Protection

O/E : Over Excitation Indication LED

Dimensions 97.0 (L) x 92.0 (W) x 39.0 (H) mm

Weight 275 g ±2%