Ac Current; Calibrator, 52120A, And Coil); Ac Current (Iflex Current With Calibrator Ac Voltage Simulation) - Fluke 377 Calibration Manual

AC Current (iFlex Current with iFlex Current Probe with Calibrator,
52120A, and Coil)
The Product measures both ac and dc voltage. The iFlex current probe (the Probe) only
measures ac voltage. For ac current performance tests from 120 A to 2500 A, use the Product
with the Probe, the Calibrator, 52120A, and the Coil. The 52120A converts low voltage input
from the Calibrator into an output current up to 120 A, then sources the current into the Coil to
produce up to 2500 Amp-turns ac.
Read all safety Information before you use the 377/378, 52120A, and the Coil. High
currents are used during this test.
To verify iFlex ac current with the Probe:
1. Connect one end of the test leads to the NORMAL output HI and LO terminals on the
Calibrator.
2. Connect the other end of the test leads to the INPUT HI and LO terminals on the 52120A.
3. Connect the HI and LO terminals of the Coil to the HIGH CURRENT OUTPUT HI and LO
terminals on the 52120A.
4. On the 52120A:
a. Select V on the input selection.
b. Set LCOMP to ON.
c. Set the OUTPUT TERMINALS to HIGH and the OUTPUT RANGE to 20 A or 120 A as
noted in Table 2
5. Connect the Probe to the DUT.
6. Center the Probe on the Coil equal distance from the conductor and the cable within the
Coil.
7. Set the Calibrator to the desired voltage and frequency output.
8. On the DUT, verify the measurement on the display is within the readout limits for the test.

AC Current (iFlex Current with Calibrator AC Voltage Simulation)

If the Probe is not available with the DUT for calibration, use the Calibrator to source
voltage to simulate ac current up to 2500 A.
To verify ac current measurement without the Probe, use the ac voltage simulation from the
Calibrator:
1. Connect the NORMAL output HI terminal of the Calibrator to the iFlex 2 mm jack flexible
probe input terminal
 Caution
for each test point for iFlex Current Probe (with 52120A and Coil).
on the DUT. See

Note
Figure 3.
Clamp Meter
Performance Test Procedures
7