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TnP-500
User Manual
Wavecom
Leakage / Run Test – Menu B – F2
The Leakage Test is an alternate method to perform insulation resistance tests. Leakage testing is a major
function of the TnP-500. There are three types of Leakage test available on the TnP-500 - take care to ensure
you use the correct test for your appliance.
This test determines errors of leakage not otherwise detected in a normal insulation test. If there are any
doubts with insulation testing of the equipment, the Standard (AS/NZS 3760:2022) allows for a leakage test to
be carried out instead. The TnP-500 has been designed to perform these tests. The Leakage Test applies power
to the Device Under Test (DUT) and measures any imbalance or leakage current. The leakage is tested to the
limits of the class types specified in the Standard AS/NZS 3760:2022 i.e. Class 1 = > 5mA as Fail.
The limit of imbalance measured on the TnP-500 will read well in excess of the limits set in mA. However,
should the supply circuit be protected by an RCD this device will trip anywhere between 10 to 30mA and trip
the mains supply switch OFF. The Leakage Test allows the user to operate the appliance in normal operation
conditions and measure its Operating Leakage current. The displayed parameter is mA. The mA Display Range
0.0 to 22.0 mA.
A predefined value for individual class types is programmed into your TnP-500. These limits are set according
to the AS/NZS 3760:2022 Standards. Should these values change in future it can be simply altered in firmware.
The run time period can be adjusted (by 5 second increments). The value can be changed by selecting the
leakage test time in the options menu. See the special functions section of the manual for more details. The
factory default setting is 20sec. The value for the leakage runtime is also used for the power test.
Caution
: Before operating ensure the equipment is firmly secured to eliminate the possibility of causing injury
or damage. This function will power the appliance on, and in the case of appliance with movable parts these
parts may begin to move. Ensure the appliance can power on safely before proceeding.
Procedure:
1. Complete a Visual Inspection (see page 22). If the device passed the Visual Inspection, continue with the
following instructions.
2. Ensure that the appliance is safely located and secure as it will be powered & operational during this test.
3. Plug the appliance into the Appliance Test Socket of the TnP-500
4. If testing a Class 1 Appliance, plug the IEC Clamp Cable into the IEC socket of the TnP-500, then clamp it
onto earthed metal on the appliance
5. If testing an RCD, plug the IEC-550 Orange Cable into the IEC socket of the TnP-500, then plug it into a
socket on your RCD and turn that switch on
6. Navigate to Main Menu B, then press F2 to enter the Leakage Test Menu
7. Press a function key to start the test
F1 = Earth Leakage, limit set to MAX then 5mA fail
F2 = Double Insulated Leakage and Extension Leads, limit set to MAX then 5mA fail
F3 = RCD Leakage (not a full RCD Trip Time or Ramp Test)
8. The TnP-500 will conduct the first part of the test without powering the appliance
9. A warning will be displayed on screen - ensure the appliance is safely located, then press F3 to power the
appliance and continue the leakage test
10. Your results will appear on the screen - you can now print the tag and unplug the appliance
If the result was a
PASS
- Tag with the appropriate tag including “next test due” date and “return to service”
If the result was a
FAIL
- Tag with a DANGER TAG and remove from service.
