UNI-T UT528, Operating Manual

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9
If the earth resistance measured is greater than 0.2 Ω , the meter will display “×
Rpe”, which is a FAIL. If this occurs, re- check the connections between the pin of
the plug to the bodywork of the appliance and that the crocodile clip is attached to
clean earthed metalwork on the appliance (try attaching the clip to an alternative
piece of metalwork). If all connections are ok the appliance earth connection may
be faulty.
The PASS mark for the earth bond test is 0.2
Ω for a Class 1 appliance.
If the reading is less than 0.2
Ω , the meter will display “ √ Rpe”, which is a PASS.
The unit will then automatically attempt to proceed to the insulation test. If it
detects that the appliance’s power switch is in the ON position it will carry out the
insulation test automatically.
If this is not detected the unit will display a flashing symbol and also “LO
LOAD”. Press the button to proceed to the insulation test.