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KUTAI ELECTRONICS INDUSTRY CO., LTD. 

TEL : +886-7-8121771

 

FAX : +886-7-8121775

 

Website : www.kutai.com.tw 

Headquarters : No.3, Ln. 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.

 

 

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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