Instruction manual

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Page 15
Chapter 1 – TnT Portable Appliance
Test Instructions
EARTHED APPLIANCE TEST
Menu 1
Note: 250v insulation testing applies to Class 1 appliances if selected [refer to page 10 for details -
250/500VDC to change test voltage].
PROCEDURE:
1. Complete a VISUAL INSPECTION on the DUT (Device Under Test)
[refer to page 13 for details – ‘Visual Inspection’].
IF THE DUT PASSED THE ‘VISUAL INSPECTION’, CONTINUE WITH THE FOLLOWING
INSTRUCTIONS [if not, refer to page 13 ’IF RESULT IS A FAIL’ ]:
2. Plug DUT into the DUT Socket.
3. Connect Earth Clip to any exposed metal on DUT.
4. Press the F1 key and wait for results (Ensure that the DUT’s Mains
switch is ON).
RESULTS ARE DISPLAYED
5. Read the result and record appropriately.
6. Unplug the DUT.
7. Press the Enter key to return to the Main Menu.
IF THE RESULT OF THE TEST WAS A ‘PASS’ - Tag the DUT with the appropriate tag,
including ‘Next test Due’ date and return to service.
IF THE RESULT OF THE TEST WAS A ‘FAIL’ - Tag the DUT with a DANGER TAG AND
REMOVE THE DUT FROM SERVICE.
In some situations if the DUT is labelled with “Surge Protection Fitted” or if it is electronic and fails, conduct a
250V-insulation test. Should it still fail, remove it from service. [refer to page 10 for details - 250/500VDC to
change test voltage]
PLEASE NOTE: ENSURE THAT THE DUT TO BE TESTED IS ISOLATED FROM ANY POTENTIAL
GROUND LOOP.
The EARTHED APPLIANCE TEST completes the following sequence as part of its testing procedure:
1. Integrated SUPPLY MAINS TEST [see page 11 for details]
2. Integrated NCNT TEST (APPLIANCE) [see page 12 for details]
3. EARTH BOND TEST (@200ma) :200Ma Test Current. Pass Level LESS than 1 Ω
ΩΩ
Ω
4. INSULATION TEST (@ 250v or 500v) :Pass Level GREATER than 1M Ω
ΩΩ
Ω
For Earthed Appliances CLASS 1
PLEASE NOTE: A VISUAL INSPECTION MUST BE CARRIED OUT
BEFORE ANY OTHER TESTS.
[refer to page 13 for more details]