KEPCO JQE 150-1.5MVPY-26956 Half Rack - Manual (Page 39)

JQE SPECIAL OPR 081111 4-5/(4-6 Blank)
4.6.2 ZERO (MINIMUM) OUTPUT CURRENT LIMIT "B" CALIBRATION
1. Turn ON the unit, and allow unit to operate for 10 to 15 minutes before proceeding.
2. Adjust I
OUT
ZERO "B" potentiometer (accessible through top cover) for current of 1% of
Current Limit "B" (see Table 1-1) (minimum output) in Amperes, tolerance ±0.5% of Current
Limit "B."
JQE 15-12MVPY-26954 = 0.043A ± 0.021A
JQE 55-5MVPY-26955 = 0.027A ±0.013A
JQE 150-1.5MVPY-26956 = 0.004A ±0.002A
4.6.3 FULL SCALE (MAXIMUM) OUTPUT CURRENT LIMIT "B" CALIBRATION
1. Turn front panel I
lim
"B" control to the full clockwise position.
2. Adjust I
OUT
FS "B" potentiometer (accessible through top cover) for 105% of Current Limit
"B" (see Table 1-1) , tolerance ±0.5% of Current Limit "B."
JQE 15-12MVPY-26954 = 4.515A ±0.021A
JQE 55-5MVPY-26955 = 2.835A ±0.013A
JQE 150-1.5MVPY-26956 = 0.420A ±0.002A
3. Record the value for use during FS Current Monitor calibration (PAR. 4.6.4).
4.6.4 FS CURRENT MONITOR CALIBRATION
1. Connect DVM to terminal +C.MON referenced to terminal –C.MON of TB503 at the rear
panel.
2. Adjust C.MON FS potentiometer (accessible through top cover) for DVM reading of
(50 x I
Onom
) in mV, tolerance: ±0.5 x I
Onom
in mV. NOTE: I
Onom
is the value recorded in
step 3 of PAR. 4.6.3 above.
NOTE: The nominal value of the current monitor transfer factor is 50mV/A.
4.6.5 FULL SCALE OUTPUT CURRENT LIMIT "A" CALIBRATION
1. a) Turn the JQE special power supply off
2. b) Remove the link between REF and RPC1 of TB502.
3. Turn front panel I
lim
"A" controls to the full clockwise position.
4. Turn the JQE special power supply on
5. Adjust I
OUT
FS "A" potentiometer (accessible through top cover) for 100% of Current Limit
"A" (see Table 1-1) , tolerance ±0.5% of Current Limit "A").
JQE 15-12MVPY-26954 and JQE 55-5MVPY-26955 = 5.0A ±0.025A
JQE 150-1.5MVPY-26956 = 1.5A ±0.0075A
6. Turn off the unit and restore the link between REF and RPC1 terminals at TB502 at the rear
panel