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TRISAN S8 Appliance categories and test sequences
8 Earth test only
This test provides an earth test on Class l appliances.
The test duration is approximately 6 seconds. This is an adequate time to agitate or flex the cord of an
appliance to instigate a possible fault. This test is applied to stationary appliances like fridges and built in items
that are difficult to move or access.
Test set-up:
Connect earth probe to any exposed metal parts securely. Clean plug contacts if required Plug the appliance
directly into the insulation resistance socket. The appliance does not have to be switched on for this test.
The appliance needs to be insulated from ground to prevent multiple earth returns.
Multiple earth returns will give a false measurement result.
Select Earth test only from the OTHER APPLIANCE MENU.
Press START button.
Progress bar will migrate from left to right
Measurement: Continuous measurement of earth resistance : ( < less than )
< 1 ohm at 200mA reference current…… PASS ideal for detection of dirty plugs, sockets and contacts
< 0.5 ohms at 200mA…………………….. PASS used for high compliance safety testing (outdoor lighting)
< 0.2 ohms at 200mA…………………….. PASS medical testing of lead appliances. (AS3551-2012)
< 0.2 ohm at 10 amperes………………… PASS routine testing of new appliances direct from factory
< 0.1 ohm and 0.2 ohm at 25 amperes…… PASS engineering testing on new products.
9 MIMS Run test CLASS I
Mineral Insulated Metal Sheath
These appliances include stoves and portable immersion heating elements. Appliances of this nature need to be
operated for some minutes before safety testing. Some manufacturing materials have a moisture absorption
characteristic that may result in an initial high current leakage result. This leakage reduces over a short time when the
element is heated to below the safe 5mA leakage threshold if the element is not faulty.
Select MIMS from OTHER APPLIANCE MENU
Press START
Measures: Electrical continuity less than 100k PASS
Earth resistance less than 1ohm (if default ) PASS
Leakage current less than 5mA. PASS
10 EPOD 250V insulation resistance test CLASS I
Electrical Portable Outlet Device
These appliances are multi outlet power boards from 2 to as many as 12 outlets which contain electrical spike
protection devices called MOV’s. or varistors that clamp the mains voltage supply to earth at 275 to 300VAC. Apply-
ing the Standard 500VDC insulation electrical strength test will fail with these devices fitted. A reduced voltage of
250VDC is considered an acceptable electrical strength test substitute.( A strength test voltage just below the clamping
action of these devices).
Select EPOD 250V from OTHER APPLIANCE MENU
Press START
Measures: Electrical continuity (A - N) including polarity and possible short circuit……...PASS/FAIL
Earth resistance …………...less than 1 ohm ……. PASS
Insulation resistance………greater than 1 M ohm. …………………………… PASS
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