EA480 Newage Stamford AS480 direct replacement

EA480

Analog, single-phase sensing. Excitation output 5Amp with half-wave rectifier for use with self-excited, brushless generators

EA480 is a direct replacement for Newage Stamford AS480. It's equipped with Over Excitation Protection, Soft Start Voltage Ramping Function, EMI suppression and Under Frequency Protection.

Features

  • Rated frequency 50/60 Hz
  • Under frequency protection and soft start voltage ramping
  • EMI suppression
  • Voltage regulation less than +/-0.5%
  • Over excitation protection
  • Quadrature Droop Input for parallel operation
  • Supports connection with Stamford Excitation Boost System (EBS)

Specifications

  • Sensing / Power Input (Average Reading)
  • Voltage 60 to 300 Vac 1 phase 2 wire
    Frequency 50/60 Hz (Jumper Selected)
  • Excitation Output
  • 110V 1 phase Continuous 31 Vdc 5A Max. 45 Vdc 7.5A for 10 seconds
    220V 1 phase Continuous 63 Vdc 5A Max. 90 Vdc 7.5A for 10 seconds
    Note: If AVR is mounted externally to alternator continuous current should be reduced by 20%
    Resistance Min. 6 ohms Max. 100 ohms @ 110V / Min. 13 ohms Max. 100 ohms @ 220V
  • Build Up Voltage
  • 4Vac 25Hz residual volts at power input terminal
  • External Voltage Adjustment
  • Max. +/-10% @ 1K ohm 1 watt potentiometer
    Fixed 7.5K ohms enables 110Vac sensing
  • Voltage Regulation
  • Less than +/-0.5% (with 4% engine governing)
  • Typical System Response
  • Less than 20 milliseconds
  • Static Power Dissipation
  • Max. 4 watts
  • Quadrature Droop Input
  • Input resistance 10 ohms
    Sensitivity 0.07A for 5% voltage drop (PF=0)
    Max. input 0.33A
  • Over Excitation Protection
  • Excitation Voltage 70 Vdc +/-10%
    Time delay 10 to 15 seconds
  • Voltage Thermal Drift
  • Less than 3% at temperature range -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

Physical Specifications

  • Dimensions
  • 130.0 (L) x 90.0 (W) x 39.0 (H) mm
    5.12 (L) x 3.54 (W) x 1.54 (H) inch
  • Weight
  • 260 g +/-2%
    0.573 lb +/-2%

Downloads

Dimensions

Rotating Image

Accessories

  • Jumper Terminals
  • x 1
  • M5L35 Screw
  • x 2
  • Adjustment Tool
  • x 1