Egcon AVR-126 Instructions Manual Download Page 3

 

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  Remote voltage adjust 

      Remove the jumper from the terminal 6 and 7, and connect the remote voltage adjust 
      potentiometer (rheostat) to the terminals 6 and 7 as specified. 

  Sensing voltage 

      Generator voltage sensing is single-phase 220Vac or 380Vac. 
      It can be selected in accordance with generator output voltage (or rated voltage) 
      as follows, 

       

*

380V sensing (terminal 4-E1) ; As generator output voltage is380, 400 and 

                                                          440V ,415V 

        *

220V sensing (terminal 4-3) ; As generator output voltage 208, 220 and 230V 

  Power input 

      The power input terminal of the regulator are marked power input AC 220V 

  Power output 

      The two power output terminals of the regulator are marked F+, F- 
      These two lines are connected to the F+, F- (or J, K) of exciter field respectively. 
 

6. ADJUSTING 

6.1.  Start prime mover and bring up to rated speed. 
6.2.  Voltage would be automatically built up. 

If not, confirm until voltage build up through the DC power connection to directly the J,K terminal 
of generator ,with BATT. (+) and BATT, (-) under disconnecting lines F+ and F- from the regulator. 

6.3.  If a minimum residual of 3 VAC is not present, perform field flashing by using 12Vdc battery and 

Contactor as below drawing.    Please refer to 7.FLASH EXCITING. for details. 

6.4.  Adjust volt potentiometer until voltage reaches nominal value. 

  Coarse voltage adjustment 

      : internal rheostat, single turn 

  Fine voltage adjustment 

      : external remote rheostat, single turn, set point should be mid position to notice easily 

6.5.  Adjust for stab potentiometer if voltage is unstable. 

(Adjusting stability changes the response time of regulator, 

Summary of Contents for AVR-126

Page 1: ...tage exceeds 85Vdc AVR output shut down to protect the generator winding coil from burning out 2 4 Starting engine generator set if the residual voltage remains on the stator winding of generator AC o...

Page 2: ...1 Size W140 x H200 x D60 mm 4 2 Mounting size W90 x H190 mm x 5 4Holes 4 3 Color bottom and cover ivory 4 4 Frequency selection changeover switch 4 5 Weight about 2kg 5 INSTRUCTION AND CONNECTION NOT...

Page 3: ...nnected to the F F or J K of exciter field respectively 6 ADJUSTING 6 1 Start prime mover and bring up to rated speed 6 2 Voltage would be automatically built up If not confirm until voltage build up...

Page 4: ...system 43 50 45 48 Hz rated volt residual volt output volt residual volt output volt rated volt 55 53 58 60 Hz V V 60Hz System 50Hz System 7 FLASH EXCITING 7 1 MANUAL FIELD FLASH ESCITING When genera...

Page 5: ...ED FLASH EXCITING Whenever start generator set to avoid no output voltage It is recommended to take automatic field flash exciting by using the generator control sequence as below drawing 8 PARALLE OP...

Page 6: ...s F F not connected Power input leads not connected Blown or missing fuse Defective regulator Defective generator Check wiring diagram for proper Connections Flash generator field Refer to 7 FLASH EXC...

Page 7: ...t is turned too high Rotate voltage adjust CCW until desired voltage is reached Rotate remote voltage adjust CCW until desired voltage is reached Output Voltage High No Adjustment Defective regulator...

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