Earth Ground Clamp
Equipment and Environment
7
Equipment and Environment
For the ac leakage current verification, adjustment, and performance test, use the Fluke 5522A with a 2-turn
current loop. Connect the AUX terminal or 20 A terminal to the LO terminal. To short the two terminals, use
a conductor with two banana jacks at both ends.
For the Ω verification, adjustment, and performance test, use the precision decade resistance box with a
1-loop short copper wire to form a resistance loop.
Table 2 is a list of specifications.
Table 2. Environment Specifications
Setup
Before you start the verification procedures or make calibration adjustments, refer to this section for the
equipment, system, and setup requirements.
See Table 3 for a list of requirements for the verification tests and calibration adjustment.
Table 3. Equipment Requirements
CAL Point Accuracy Unit
Minimum Required
Characteristics
IET 1433-20
0.100 1.5 % 0.020 0.022
Ω
5.38 % 2.01 %
0.250 1.5 % 0.020 0.024 2.38 % 0.81 %
0.500 1.5 % 0.050 0.058 2.88 % 0.41 %
1.000 1.5 % 0.050 0.065 1.63 % 0.21 %
2.000 1.5 % 0.100 0.130 1.63 % 0.11 %
5.000 1.5 % 0.100 0.175 0.88 % 0.05 %
10.00 1.5 % 0.10 0.25 0.63 % 0.03 %
20.00 1.5 % 0.30 0.6 0.75 % 0.02 %
50.00 1.5 % 0.30 1.05 0.53 % 0.01 %
100.0 1.5 % 0.50 2.0 0.50 % 0.01 %
200.0 3 % 1.0 7.0 0.88 % 0.01 %
400 5 % 5.0 25 1.56 % 0.01 %
600 10 % 10 70 2.92 % 0.01 %
1000 20 % 0 200 5.00 % 0.01 %
Equipment Description
Recommended
Model
Used on:
Verification
Tests
Calibration
Adjustment
Current Calibrator Calibrator Fluke 5522A
XX
Current Wired Coil 2-Turn Loop insulated copper wire
XX
OHM Calibrator
Precision decade resistance box
IET 1433-20 or equivalent
XX
OHM Wired Coil
1-Loop short copper wire
XX
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