ELECTRONICS
OWER
P
INSTRUCTIONS TO INSTALLING
AND ADJUSTING THE AVR
www.powerelectronics.gr
MODELS:
SE-4A15, SE-4E15, SE-4A65, SE-4E65, SE-3A110, SE-3E110
SE-4E110, SE-4A110, SE-4E150, SE-4A150, SE-4E200, SE-4A200
U/S -
Under Frequency Protection.
It protects the generator from over-excitation current due to lower engine revs.
To adjusting the U/S trimmer proceed as follows
:
The AVR comes with pre-configured
Under Frequency
protection.
If re-adjusting is to be needed, proceed to the follows:
1.
Turn anti-clockwise the
U/S
trimmer all the way
(25 turns).
2.
Start the engine and wait until voltage is built up.
3.
Reduce the fuel from the Governor until the periods are
6 Hz
less than the normal. (e.g. If the engine is running on
50Hz
,
then the periods are to be reduced to
44Hz
and if the engine is running on
60Hz
, then the periods
are to be reduced to
54 Hz.
4.
Turn clockwise the
U/S
trimmer until the
red led
(which is located behind the
VOLT
trimmer) lights up.
(
Note that the generator voltage will also starts to drop).
5.
Restore generator to the normal state
(50 or 60 Hz).
STAB
- Stability.
It eliminates the voltage fluctuations.
To adjusting the STAB trimmer, proceed as follows
:
On the left side of the central processing PCB,
three pins can be found. Depending on which pins
we decide to short-circuit, different levels of stability
can be achieved.
There are three specific options.
These are: 30%, 60% and 100% over the whole of
the stability curve. It can also be observed
diagrammatically on the image provided to the right ------->
VOLT -
Voltage.
Voltage adjustment. It co-operates with the external pot.
To adjusting the VOLT trimmer, proceed as follows:
Since the engine has the right-periods (cycles), then the remote knob is adjusted to the middle position.
Then the
VOLT
trimmer (which is located in the main unit) is adjusted until the right voltage is reached.
All the above adjustments i.e.
U/S, STAB, VOLT
, must be done without any load in the generator,
the switch
(ACB)
must be in
OFF
position.
P/F
- Power Factor
. This adjustment is done when the generator is already in parallel with another or others.
To adjusting the P/F trimmer proceed as follows:
We start by placing the trimmer to the middle position.
If turning it anti-clockwise, the amperes of generator build-up in relation to the other generator.
If the trimmer is moved in a clockwise manner, the amperes are reduced in relation to the other or others generators
.
GREEN LED CABLE CHECKER.
The green led will help to achieve the right installation.
The green led (which is located behind the
P/F
trimmer), will help to achieve the right installation.
It will light
only*
if all the below are ok:
1.
The circuit of this led will activated, if only if a current transformer is installed.
2.
The generator is 20% at least under load.
3.
The identity of the phases is ok.
4.
The suggestion of the phases is ok.
5.
The polarity of current transformer is ok.
*If there is more than one wrong cable connection at the same time, there is a chance that the green led will be lighten.
25 TURN TRIMMER (IT DOES NOT STOP)
UNDER FREQ PROTECTION
(DEFAULT
(PRE-ADJUSTED)
VALUE FOR 380V: 44 Hz
THE CLOCKWISE TURNING
OF
U/S
TRIMMER ACTIVATES
THIS FEATURE AT HIGHER Hz.
(~74Hz THE HIGHEST)
THE ANTI-CLOCKWISE TURNING
OF
U/S
TRIMMER ACTIVATES
THIS FEATURE AT LOWER Hz.
(~22Hz THE LOWEST)
(DEFAULT
(PRE-ADJUSTED)
VALUE FOR 440V: 54 Hz
F
E
D
F
E
D
F
E
D
E-D close: 30% stability (default)
E-F close: 60% stability
No Jumper: 100% stability
