background image

 

___________________________________________________________________________________________ 

4

 

EA06

 

Figure 2

 

Manual Field Flash 

4.1.2  Starting Generator 

(1)  Reconfirm all setting and wiring. 

 

ATTENTION 

The  AVR  reading  AC  voltage  are  all  average 
value. 

 

(2)  Start generator and adjust to rated frequency. 

The  first  measured  voltage  value  should  be 
under the rated voltage. If not, then reconfirm 
the start setting. 

 

(3)  Slowly adjust 

VOLT

  potentiometer to the 

rated  voltage,  at  this  time  the  generator 
voltage  may  become  unstable.  Adjust  the 

STAB.

  potentiometer anticlockwise, until 

the  oscillation  stabilizes.  Over  adjustment 
may cause short oscillation when load applied 
or load type varies. 

 

SUGGESTION 

Adjust the 

STAB.

  potentiometer to the point 

where the oscillation occurs and then adjust the 
potentiometer 

counterclockwise 

by 

1/6 

of 

rotation. 

 

(4)  If voltage can not be adjusted or to the rated 

value,  please  check  to  see  if  the  generator 
frequency  is  too  slow  (Under  frequency 
protection  activated).  If  residual  voltage  is 
below  5  Vac,  then  please  execute  field 
flashing to help build up the residual voltage. 

 
(5)  Make  sure  the  generator  and  AVR  are  both 

under normal operation conditions. 

 
(6)  The  voltage  adjustable  range  should  be  +/- 

1% under no load or full load. If the adjustable 
range in not within such range, please check 
the below : 

 
A.  Generator  under  frequency  (Lower  than  low 

frequency protection knee point). 

B.  Severely  deformed  generator  output  wave 

form. 

C.  Capacitive  load  over  ratio  (Power  factor  in 

lead). 

D.  Change the AVR and restart. 

E.  Under  over  excitation  voltage  protection 

(Overload protection). 

 
 
 
 
 
 

SECTION 5 : FIELD FLASHING 

When  the  regulator  is  installed  correctly  but  the 
generator is failed to generate power.  Besides carbon 
brushes  were  worn out, here are two  possible causes 
below. 
 

5.1 

The polarity of field is inverse 

 

Solution

Exchange the connection of F+ and F-. 

 

5.2 

The  residual  voltage  is  less  than  5  Vac, 

Solution 1

 

5.2.1  Shut  down  generator,  disconnect  the  wiring 

between AVR and generator then flash the field. 
Flashing  duration  =  3  seconds.  (See  wiring  in 
Figure 2) 

 

Resistor 3 

– 5 ohms for full wave AVR 

 

Resistor 5 

– 10 ohms for half wave AVR 

 

 

Warning

!!

    Over  field  flashing  may  damage 

the field winding of generator. 

 

5.2.2  Restart  generator  and  measure  the  residual 

voltage  by  AC  Voltmeter,  if  it  is  still  less  than  5 
Vac,  repeat  the  previous  process,  after  several 
times,  the  residual  voltage  still  cannot  be  built, 
Kutai  EB500  is  strongly  recommended,  see 
Figure 2. 

Field

SW

R

-

+

V

F+

F-

BATT.

~

G

~

T

S

R

 

 
 

5.3 

Maintenance 

Regular maintenance to make sure the AVR surface is 
clean  and  free  from  oil  or  moisture.  All  connection 
terminals and  wirings must be firmly tightened and  no 
signs of visible oxidation or erosion. 
 

WARNING 

Overly  field  flashing  may  damage  the  AVR  or 
generator excitation winding. 

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.

 

Summary of Contents for EA06

Page 1: ...Dist Kaohsiung City 80664 Taiwan EA06 Generator Automatic Voltage Regulator Operation Manual Suitable for Single or Three Phase Self Excited Brushless Generator Compatible replacement for Mecc Alte UVR6 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: ...rmittent 7A for 10 secs Voltage Thermal Drift Resistance 10 100 ohms Less than 3 at temperature range 40 to 70 C Fuse Spec Slow blow 5 x 20mm S505 6 3A 250V Environment External Voltage Adjustment Operating Temperature 40 to 60 C Max 5 100K ohms 1 2 watt potentiometer Storage Temperature 40 to 80 C Relative Humidity Max 95 Voltage Regulation Vibration 1 5 Gs 5 30 Hz Less than 1 with 4 engine gover...

Page 3: ...ent 3 7 1 Slowly and precise adjustment of STAB potentiometer can change the respond time between the AVR and generator Inadequate adjustment will cause voltage instability and over adjusting will cause sudden overly voltage variation under heavy load 3 7 2 Analogue type multi voltmeter is suggested when adjusting the voltage stability Adjust the STAB potentiometer until the pointer on the multi v...

Page 4: ...oint B Severely deformed generator output wave form C Capacitive load over ratio Power factor in lead D Change the AVR and restart E Under over excitation voltage protection Overload protection SECTION 5 FIELD FLASHING When the regulator is installed correctly but the generator is failed to generate power Besides carbon brushes were worn out here are two possible causes below 5 1 The polarity of f...

Page 5: ...5 R 60HZ 1 3 2 0 B N T Field VR S R S T N T N R S winding 3 4 6 5 60HZ 1 0 2 B VR R S T N Auxiliary Field 3 T 4 5 6 N R S 60HZ 0 1 2 B Auxiliary winding VR Field R T S N winding R S T N Auxiliary Field T N R S Auxiliary winding 3 5 4 6 0 1 2 60HZ B VR Field T N R S Figure 5 3 phase 240 277 Vac Figure 6 1 phase 120 240 Vac With auxiliary winding 3 4 6 5 0 1 2 VR 60HZ B R S T N Field T N R S 3 4 6 5...

Page 6: ...3A 3 VR Terminal SR7 1 1 N T S R 5 6 2 4 3 Field Auxiliary B 0 winding 60HZ VR N S T R 4 3 5 6 4 4 S Field S winding Auxiliary T N 0 1 3 4 5 2 6 5C 4 5 B 60HZ VR 3 1 3A SR7 Terminal 5 6 T N 4 5C Auxiliary winding R S N T R 4 6 5 0 2 3 1 5C 4 5 60HZ B VR 1 3 3A Field Terminal SR7 R 5 6 S T R N 4 5C 2 3 5 2 3 5 Figure 14 1 phase 120 240 Vac Figure 15 1 phase 120 240 Vac With auxiliary winding Field ...

Reviews: