Fluke 393 - Resistance;Continuity; Capacitance

393/393 FC
Calibration Manual
10
AC Current (iFlex Current Probe with Amplifier and 25-Turn Coil or
50-Turn Coil)
This procedure is used for performance tests 150 A to 2400 A. Low ac voltage input from
a 5522A is amplified into a current output of up to 96 A, then input into the 25-turn coil to
produce up to 2400 A ac.
W Caution
Read all safety Information before you use the 393/393 FC, 52120A, and
52120A/3KCOIL. High currents are used during this test.
To test iFlex AC current:
1. Connect the 5522A NORMAL HI and LO to the 52120A INPUT HI and LO jacks.
Select VOLTS input mode on the 52120A.
2. Connect the coil HI and LO terminals to the 52120A HIGH CURRENT OUTPUT HI
and LO jacks.
3. On the 52120A, set LCOMP to ON.
4. Select the range provided in the footnote of each test point for iFlex Current Probe
(with 52120A and coil).
5. Connect the iFlex Current Probe to the DUT.
6. Place the probe centered with equal distance of the conductor and the cable within
the coil.
7. Set the calibrator to the voltage and frequency for the first test point.
8. Set the calibrator to OPER:
a. Verify that the DUT reads within the display limits.
b. Verify the DUT reading for the remaining steps for iFlex Current Probe with
Amplifier and coil.
Table 2. Performance Tests
Test (Switch
Position)
Calibrator Output
52120A
Range
Readout Limit
Low High
V
AC Voltage
30 V @ 20 Hz NA 29.2 V 30.8 V
30 V @ 55 Hz NA 29.2 V 30.8 V
30 V @ 500 Hz NA 29.2 V 30.8 V
570 V @ 45 Hz NA 563.8 V 576.2 V
570 V @ 55 Hz NA 563.8 V 576.2 V
570 V @ 500 Hz NA 563.8 V 576.2 V
975 V @ 45 Hz NA 960 V 990 V
975 V @ 55 Hz NA 960 V 990 V
975 V @ 500 Hz NA 960 V 990 V