Wavecom TnP-500 - Leakage Test Details; Earth Continuity Test (Earth Bond); Unique Earth Bond Test Feature; 3 Phase Testing Information

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TnP-500 User Manual Wavecom
Leakage Test
If there are any doubts with insulation testing of the equipment, the AS/NZS 3760:2022 standard allows for an
alternative test method; a Leakage Test can be performed instead. The TnP-500 is designed to perform these
tests.
NOTE: 10Amps Maximum Resistive Load only
A Leakage Test applies power to the Device Under Test (DUT) and measures the imbalance of leakage current
from the DUT between the active and neutral conductors. The leakage is tested to the limits specified in the
standard and a Pass/Fail result as well as a digital reading is provided to ensure that the user gains as much
information as necessary.
Earth Continuity Test - Commonly called Earth Bond Test
Note: Part of normal (Class 1 test) procedure. Use supplied IEC–Alligator Clip lead or optional accessory ‘WCM-Probe kit’.
The TnP-500 conducts earth continuity tests at Approx. 200mA. Continuity tests at higher currents are not
required or recommended on certain equipment as this may cause severe damage or premature failure to the
Device under test (see AS/NZS 3760:2022).
Unique Earth Bond Test Feature
The Earth Bond test duration can be controlled by the user by pushing the ENTER button during the test.
This will extent the test time by 30 seconds. The TnP-500 will then add 30 seconds to the test time for each
additional time you press ENTER. This feature has been incorporated to provide extra time to achieve an
adequate physical connection, or confirm any possible INTERMITTENT issues. There may be situations where
the condition of equipment, coatings applied, or suspect wiring breaks may alter the earth connection path of
the device under test. This may save time by prolonging tests instead of conducting multiple iterations of the
same test.
3 Phase Testing
Note: 3 Phase Testing requires a three phase adaptor, sold separately. The TnP-500 cannot perform a 3 Phase Leakage
test.
3 Phase appliances can be tested by the TnP-500 appliance testers. As the insulation tests are from Phase to
Earth, only a 500V insulation test is required. This test may be carried out by using the optional adaptor ‘WCM-
3PH-MADP’ [See ‘Optional Accessories’ for details.]
To change the test voltages, when in Main Menu A; Press Enter and F2 together to view the Settings menu.
Select “Change Insulation Vol” and press enter. Select either 250V or 500V. TnP-500 defaults to 500VDC, and
will revert back to that when restarted.