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.
  • All manufacturer names and numbers are used for reference purpose only and do not imply that any part is the product of these manufacturer.
  • Digital Voltage Sensing and Under Frequency Protection circuits reduce thermal drift
  • Soft start voltage ramping
  • Over excitation protection
  • Quadrature Droop Input for parallel operation
  • EMI suppression
  • Built-in high capacity fuse

Specifications
Sensing Input
(Average Reading)
  • Voltage 90 to 130 Vac @ 110 Vac 1 phase 2 wire
  • Voltage 180 to 260 Vac @ 220 Vac 1 phase 2 wire
  • Frequency 50/60 Hz Jumper setting
Power Input
  • Voltage 40 to 300 Vac 1 phase 2 wire
  • Frequency 40 to 60 Hz
Excitation Output
  • Continuous 63 Vdc 4A @ 220 Vac 1 phase Max. 90 Vdc 7.5A for 10 seconds
  • >Resistance Min. 15 ohms Max. 100 ohms
  • >Fuse Spec. Slow blow 5 x 20 mm S505-6.3A
External Voltage Adjustment
  • Max. +/-10% @ 1K ohm 1 watt potentiometer
Voltage Regulation
  • Less than +/-0.5% (with 4% engine governing)
Build Up Voltage
  • 5Vac 25Hz residual volts at power input terminal
Soft Start Ramp Time
  • 4 seconds +/-10%
Typical System Response
  • Less than 20 milliseconds
EMI Suppression
  • Internal electromagnetic interference filtering
Static Power Dissipation
  • Max. 4 watts
Quadrature Droop Input
  • Max. sensitivity 0.07A for 5% droop
  • Max. input 0.33A
Analogue Voltage Input
  • +/-5 Vdc or +10 Vdc, 5% @ 1 Vdc
Under Frequency Protection (Factory Presets)
  • 50 Hz system knee point at 45 Hz
  • 60 Hz system knee point at 55 Hz
Over Excitation Protection
  • Set point 20 to 55V @ 110V
  • Set point 40 to 110V @ 110V
Voltage Thermal Drift
  • Less than 3% at -40 to +70 °C
Under Frequency Knee Point Thermal Drift
  • Less than +/-0.1 Hz at -40 to +70 °C

Environment
Operating Temperature
  • -40 to +60 °C
Storage Temperature
  • -40 to +85 °C
Relative Humidity
  • Max. 95%
Vibration
  • 5.5 Gs @ 60 Hz

Accessories
M5L35 Screw
  • x 4
Jumper Terminals
  • x 1
Adjustment Tool
  • x 1

Physical Specifications
Dimensions
  • 135.0 (L) x 100.0 (W) x 45.0 (H) mm
  • 5.31 (L) x 3.94 (W) x 1.77 (H) inch
Weight
  • 405 g +/-2%
  • 0.89 lb +/-2%
Weight 0.53 kg
Dimensions 20.35 × 15.36 × 4.35 cm

Related products