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PAT400 Series
77
(iii)
TOUCH current Test (IF).
Also called absence of potential
Test voltage:
230 Vac 50 Hz
→
9.99 mA
110 Vac 50 Hz
→
9.99 mA
During this test the appliance under test is powered from its normal mains supply and the test lead and probe is connected to the PAT
terminal. This probe is applied to any conductive parts on the appliance under test. This probe performs a current measurement with
respect to earth. This test can also be performed on three phase appliances powered from their own supply.
Warning:
A touch leakage test will operate the asset during the test. Make sure the asset is safe before the
test
commences.
A.4
Load testing
Also called
Operation
Also called
VA
Measuring the load (VA) of an appliance is a good indication of its operating condition. By setting a load VA limit in the test groups, an
appliance can be assessed automatically for excessive load.
The Load VA limit is usually set based on the fuse rating in the appliance or in the mains connector:
Example 230 Vac with 3 A fuse maximum VA Rating should be 230 x 3 = 690 VA
Select 750 VA pass limit
However some equipment can draw very high inrush currents when starting. This should be considered when setting pass limits.
Warning:
A Load test will operate the asset. Make sure the asset is safe before the test commences.
A.5
RCD testing
The PAT400 is capable of testing portable plug-in 30mA RCDs. These are used to protect the user from electrical faults on individual
items of electrical equipment.
Test options include a 30mA test or FULL test.
30mA test - Tests the manual test button on the RCD and the trip function at 30mA fault current.
FULL test - Tests the following:
Manual test button
- Ensures correct operation
1/2x I test
- Ensures the RCD does not trip too easily
1xI test
- 30 mA trip to ensure trip function works correctly (ie <300 ms)
5 x I
- Ensures trip function works quickly on large fault currents (ie <40 ms)
The test result is stored as a single PASS or FAIL result, as there is no value in storing the individual trip times.
