OPERATION AND MAINTENANCE MANUAL PN 28.04.1014 GPU JET-POWER FILTER II 2500 PN 28.09.1013
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7.5 -
CALIBRATE THE INSTRUMENTS
Must be made to each six months of functioning;
Adjust the instruments pointer at “zero” by the screw in the plastic
view and the measuring of the Trimpot with external access, at
the bottom of the instrument, comparing it with an instrument of
knowing precision.
7.6 -
RIPPLE TEST
Connect the equipment with a resistive load of 100A;
Using an oscilloscope or a multimeter of precision make the meas-
urement of the AC component at the 28 VDC output;
The measure must not be higher than 0.15 VAC. The normal meas-
ure is 0.01 VAC, 0.035% of ripple at 100A and 0.17 VAC at 300A,
0.59% of ripple;
In case of superior measures:
o
verify if the load is resistive;
o
check if the capacitor is open;
o
check if the filter shock is in short-circuit between spires.
7.7 -
OUTPUT TENSION TEST
The table below verifies the range of tension in the equipment output:
POSITION OF THE SWITCH OF
TENSION ADJUSTMENT
OUTPUT TENSION
01
24,2 VDC
02
25,7 VDC
03
27,4 VDC
04
28,6 VDC
05
29,8 VDC
06
31,2 VDC
07
33,2 VDC
NOTE:
It could be able to have a variation for greater or minor, according to the
variation of the tension supplied by the local utility company.
