Load resistor: see " Firing circuit adj ustm ent' ' .
1 . Connect RAC PAC as shown. "S ens e" switch at "INT" . S 4 at " NO RMA L' ' .
Voltage control at 3 2 V o r 6 0 V respectively.
No load. OVP is off.
2 . Connect a voltmeter b etween TD and TG . Increase line voltage and check
that voltage TD : TG stabilizes at 9, 7 - 11, 3 V for 180 V l ine at the lowest.
3. Connect a TVM or VTVM voltm eter 10 mV FSD b etween TG and the wiper
arm (red-blue-grey) of P90 . Adjust P2 for z ero reading.
4. S et voltage control to 32 . 00 or 6 0 . 00 volts respectively.
Adjust Pl for correct reading on DVM.
5. Specification check:
a. Close s witch S and adjust the load resistor for max. nominal output
current. Read the output voltage variation for 0-100% load (see
specification " Load regulation" ) .
b . Open S . Read output voltage variation for 200-222 V and 2 18-240 V
line variation. Repeat with S closed 100% load. (see specification
" Line regulation") .
c . Connect an A C R MS voltmeter across the output,
"+ "
o r "-'' side
grounded. Read AC voltmeter for
0
and 100% load. ( s e e s pecification
"Ripple and nois e") .
d. Lower line voltage to min. specified (e. g. 200 for 220 V operation)
and check that ripple does not increas e .
c .
CURRENT LIMIT ADJUST MENT
42
D
0
0
D C Amm et e r
Fi g u r e
37.
s
L o ad r e s i s t o r
P 9 4
I
- - -,
8
+
-
P 93
�' o
D C Vo l t m e t
.. r
P 3
D C c u rrent l i m i t a dj u st m ent