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EA350 

Generator Automatic Voltage Regulator 

Operation Manual 

 
 
 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 

 
 
 
 
 
 
 
 
 

 

 

Headquarters : 

No.3, Ln. 201, Qianfu St., Qianzhen Dist., Kaohsiung City 80664, Taiwan 

Tel :

 + 886-7-8121771

 

 

 

Fax :

 + 886-7-8121775

 

 

 

URL : 

http://www.kutai.com.tw 

 

Self Excited Automatic Voltage Regulator For General Generators 

Compatible with Marathon SE350* 

*  Use for reference purpose only and not a genuine Marathon product. 

  EN61204-3 : 2001 certified 

Summary of Contents for EA350

Page 1: ... St Qianzhen Dist Kaohsiung City 80664 Taiwan Tel 886 7 8121771 Fax 886 7 8121775 URL http www kutai com tw Self Excited Automatic Voltage Regulator For General Generators Compatible with Marathon SE350 Use for reference purpose only and not a genuine Marathon product EN61204 3 2001 certified ...

Page 2: ...terminal 5 VAC Operating Temperature 40 C 60 C Storage Temperature 65 C 85 C Burden 250 500VA Max External Volts Adjustment 5 with 1K ohm 1 watt trimmer 10 with 2K ohm 1 watt trimmer EMI Suppression Internal electromagnetic interference filtering Unit Power Dissipation Max 8 watt Under Frequency Protection Factory Setting 60 Hz system presets knee point at 54 61 Hz 50 Hz system presets knee point ...

Page 3: ... For 5 voltage variation use a 1000 ohm 1 2 watt rheostat See Figure 5 6 2 4 Stability Adjustment System stability is the ability of the generator to respond to load transients Decreasing the stability makes the generator less sluggish and faster to respond to toad transients If the stability of the regulator is decreased too much the generator will tend to hunt under steady state Conditions the s...

Page 4: ...ion under voltage it can result in insufficient adjustment range for stability adjustment and when excitation over voltage the response from the AVR becomes sluggish The AVR is equipped with 2 bridging wires J1 and J2 to help improve or relief the condition See Figure 2 If the unloaded excitation voltage is less than 7 VDC please cut open the J2 red bridging wires If the unloaded excitation voltag...

Page 5: ...ive load or a short circuit 2 If a minimal residual of 5 volts is not present perform the steps under Field Flashing Apply and remove the generator load to verify stability If the generator responds too slowly or hunts oscillates Check the generator output for excessive load or a short circuit Adjust the Regulator stability control with no load applied Check the stability of the governor system Ch...

Page 6: ...eater than 5VAC but AVR still unable to build up voltage please replace with another AVR WARNING Please make sure you have read and understand the contents of the instruction manual prior to installation Incorrect wiring connection may result in irreversible damage to the product and other equipments This Automatic Voltage Regulator is not equipped with loss Sensing Protection function Over Excita...

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