EA321 Newage MX321 PMG Automatic Voltage Regulators Replacements

EA321

Automatic Voltage Regulator for PMG Generator

EA321 3 Phase Sensing Permanent Magnet Generator type voltage regulator is a compatible replacement for Newage Stamford MX321 and Onan 305-0823.

Features

  • 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

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%

Downloads

Dimensions

Rotating Image