Clamp Meter
Performance Test Procedures
7
AC Current (iFlex Current Probe with Amplifier and
25-Turn Coil)
The iFlex AC current tests with a 52120A transconductance amplifier and a 25-turn
52120A/3kCOIL is for performance tests >950 A. This procedure is for performance tests
0 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 377/378, 52120A, and
52120A/3kCOIL. High currents are used during this test.
For performance tests 0 A to 950 A, see AC Current (iFlex Current Probe with 50-Turn
Coil).
To test iFlex AC current >950 A:
1. Connect the 5522A to the input HI and LO and select VOLTS on the input selection.
2. Turn LCOMP to ON at the 52120A.
3. Select the Range and Output terminals provided in the footnote of each test point for
iFlex Current Probe (with 52120A and 25-turn coil).
4. Connect the 52120A/3kCOIL HI and LO to the 52120A to output specified for the test
point in table 2, HI and LO.
5. Connect the iFlex Current Probe to the DUT. See Figure 2.
6. Place the probe centered with equal distance of the conductor and the cable within
the 52120A/3kCOIL.
7. Set the calibrator to the voltage and frequency:
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 25-Turn Coil.
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