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EA321

 

SECTION 1 : SPECIFICATION 

Sensing Input 

Analogue Voltage Input 

  Voltage 

190 

 264 Vac 3 phase 

  Input Resistance  1K ohm 

  Frequency 

50 / 60 Hz, Jumper selected 

  Max. Input 

+/- 5 Vdc 

 

  Sensitivity 

1V for 5% generator volt 

Power Input (PMG)

 

 

  Voltage 

170 

 220 Vac 3 phase 3 wire 

Over Voltage Detector Input 

  Current 

3A / Phase 

  Set point 300V. Time delay 1 sec (fixed) 

  Frequency 

100 

 120 Hz, nominal 

  CB trip coil volt 

10 

 30 Vdc / 0.5 Amp 

 

 

Excitation Output

 

Current Limit Input 

  Voltage 

Max. 120 Vdc @ power input 220 Vac    Burden 

 

10 ohms 

  Current 

Continuous 4A 

  Sensitivity range 

0.5 

 1A 

   

Intermittent 7A for 60 secs. 

 

  Resistance 

Min. 15 ohm 

Under Frequency Protection (Factory Presets) 

 

  Set point 95% Hz 

External Voltage Adjustment

 

  Slope 100 

 300% down to 30 Hz 

  Max. +/- 10%  @ 5K ohm 1 watt potentiometer 

 

 

Over Excitation Protection

 

Voltage Regulation

 

  Set point 

120 Vdc 

  Less than +/- 0.5% RMS ( with 4% engine governing )    Time delay 

 15 secs. 

 

 

Build Up Voltage

 

Voltage Thermal Drift

 

  5 Vac residual volts at power input terminal 

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

 

 

Soft Start Ramp Time

 

Environment 

  0.4 

 4 s/- 10% 

  Operating Temperature  -40 to +70 

˚C 

 

  Storage Temperature 

-40 to +85 

˚C 

Static Power Dissipation

 

  Relative Humidity 

Max. 95% 

  Max.18 watts 

  Vibration 

3.3 Gs @ 100 

 2K Hz 

 

 

Quadrature Droop Input 

Dimensions 

  Burden 

10 ohms 

  203.5 (L) x 153.6 (W) x 43.5 (H) mm

 

  Max. input 

0.33 A 

 

  Max. sensitivity 

0.22 A for 5% droop (PF = 0) 

Weight 

 

  530 g +/- 2%

 

Summary of Contents for EA321

Page 1: ...201 Qianfu St Qianzhen Dist Kaohsiung City 80664 Taiwan EA321 Generator Automatic Voltage Regulator Operation Manual Use with PMG brushless generators Compatible with Newage MX321 All manufacturer names and numbers are used for reference purpose only and do not imply that any part is the product of these manufacturer ...

Page 2: ...ty range 0 5 1A Intermittent 7A for 60 secs Resistance Min 15 ohm Under Frequency Protection Factory Presets Set point 95 Hz External Voltage Adjustment Slope 100 300 down to 30 Hz Max 10 5K ohm 1 watt potentiometer Over Excitation Protection Voltage Regulation Set point 120 Vdc Less than 0 5 RMS with 4 engine governing Time delay 8 15 secs Build Up Voltage Voltage Thermal Drift 5 Vac residual vol...

Page 3: ...mote voltage trimmer allowing the user fine control of the generator s output 2 7 An analogue input is provided allowing connection to a controller or other external devices with compatible output 2 8 The AVR has the facility for droop CT connection to allow parallel running with other similarly equipped generators NOTE 1 Derate linearly from 3 7A at 50 C to 2 7A at 70 C 2 The stated voltage regul...

Page 4: ... stability control anti clockwise until the generator voltage starts to become unstable The optimum or critically damped position is slightly clockwise from this point i e where the machine volt are stable but close to the unstable region 4 3 Under Frequency Roll Off UFRO Adjustment 4 3 1 The AVR incorporates an under speed protection circuit which gives a VOLT Hz characteristic when the generator...

Page 5: ...ent limit CT s of the correct ratio need to be connected to the AVR S1 S2 terminals There is an internal time limit of 10 seconds Consult the factory before using this feature 4 11 Over Voltage OVER V Adjustment This adjustment is set and sealed in the works and should not be tampered with An over voltage condition is indicated by the illumination of the red LED which also indicates under speed ru...

Page 6: ...1 Droop Stability U V W Trim Dwell Dip LED UFRO Rms Selection Frequency Volts 4P60HZ 1 2 3 No link 6P50HZ 4P50HZ 6P60HZ I Limit EA321 Stability 550KW 90 550KW 90KW Indicator EA321 G Generator P4 P3 P2 PMG X XX 3 Bridge S1 T S2 220V C T S R C T S1 S2 S1 C T S2 1 2 For external adjusted 5K 6 7 8 K1 K2 B0 B1 E0 E1 U V W 1 2 3 A B C Exciter Figure 2 Disposition Drawing Figure 3 Wiring Drawing Note Whe...

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