METREL MI 3295 - 7.2 Step, Contact;Touch Voltage, and Potential Measurements; 7.2.1 Injection of Test Current

MI 3295 Step Contact Voltage Measuring System Measurements
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Current measurements
Current measurement is intended for measurement of AC currents (leakage currents, load
currents, noise currents) using the iron current clamps or flex clamps.
Figure 7.7: TRMS, 50 Hz, 60 Hz current measurement example: Iron clamp (left) and Flex
clamps (right)
Figure 7.8: Current measurement example – 55 Hz mode: Iron clamp (left) and Flex
clamps (right)
7.2 Step voltage, Contact/Touch voltage and Potential
7.2.1 Injection of test current
Before starting the Step voltage, Contact/Touch voltage and Potential measurements the
test current must be injected in the earth with MI 3295S.
Figure 7.9: Current generator screen
 Connect C2 test lead to the main earthing point.
 Place the earth probe.
 Connect C1 test lead to the earth probe or another auxiliary earthing point.
 Select CURRENT GEN. function.
 Press the TEST key to start the generation of the current.
 Check the value of the current.