McPherson Controls | Voltage Regulator | SS321

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McPherson Controls | Voltage Regulator | SS321

$350.00

  • Replacement for Newage MX321 and Onan 305-0823 
  • McPherson Controls Self Excited Automatic Voltage Regulator  
  • 3 Phase Sensing Permanent Magnet Generator type AVR 
  • Not a genuine Newage or Onan product 

Available on backorder. Usually ships in 3 to 5 business days.

can be export

Product can be export to the Caribbean, Latin America and other parts of the world with an additional payment. Contact us for shipping from USA to your country.

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SKU: SS321
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Description
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Description

SS321

Details and Specifications

  • Voltage regulation less than +/-0.5% RMS 
  • For use in parallel operation 
  • RAMP, DIP, DWELL, DROOP, RMS, U/F, Over Voltage and Over Excitation Adjustment Functions 
  • Over Exc. / Over Volt. and UFRO LED indicators 
  • Current limiting function 

Product Specifications:

Specifications 
Sensing Input Voltage 190 to 264 Vac 3 phase 

Frequency 50/60 Hz selectable 

Power Input (PMG) Voltage 170 to 220 Vac 3 phase 3 wire 

Current 3A / phase 

Frequency 100 to 120 Hz nominal 

Excitation Output Voltage Max. 120 Vdc @ power input 220 Vac 

Current Continuous 4A Intermittent 7A for 60 seconds 

Resistance Min. 15 ohms 

External Voltage Adjustment Max. +/-10% @ 5K ohms 1 watt potentiometer 
Voltage Regulation Less than +/-0.5% RMS (with 4% engine governing) 
Build Up Voltage 5Vac residual volts at power input terminal 
Soft Start Ramp Time 0.4 to 4 seconds 
Static Power Dissipation Max. 18 watts 
Quadrature Droop Input Burden 10 ohms 

Max. Input 0.33A 

Max. Sensitivity 0.22A for 5% droop (PF=0) 

Analogue Voltage Input Input Resistance 1K ohm 

Max. Input +/-5 Vdc 

Sensitivity 1V for 5% generator volt 

Over Voltage Detector Input Set Point 300V 

Time Delay 1 second (fixed) 

CB trip coil volt 10 to 30 Vdc / 0.5 Amp 

Current Limit Input Burden 10 ohms 

Sensitivity Range 0.5A to 1A 

Under Frequency Protection (Factory Presets) Set Point 95% Hz 

Slope 100 to 300% down to 30 Hz 

Over Excitation Protection Set Point 120 Vdc 

Time Delay 8 to 15 seconds 

Voltage Thermal Drift Less than 5% at temperature range -40 to +70 °C 

 

AVR Control Functions 
VOLT Voltage adjustment 
STAB Stability adjustment 
UFRO Setting under frequency protection knee point 
DROOP To set the Droop to 5% at PF=0 
TRIM To optimize analogue input sensitivity 
EXC TRIP Over excitation trip level set 
DIP Hz related voltage DIP set 
DWELL Hz related recovery time set 
I/LIMIT Stator current limit set 
OVER/V Over voltage trip level set 
RAMP No load voltage Ramp set time 
RMS Root mean square of generator 

 

Environment 
Operating Temperature -40 to +70 °C 
Storage Temperature -40 to +85 °C 
Relative Humidity Max. 95% 
Vibration 3.3 Gs @ 100 to 2K Hz 

 

Physical Specifications 
Dimensions 203.5 (L) x 153.6 (W) x 43.5 (H) mm 
Weight 530 g +/-2% 

PRODUCT Related documents:

SS321 Manual

Additional Info
Weight2 lbs
Dimensions9 × 6.5 × 2.25 in
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