User manual

Wavecom Instruments Portable Appliance Testers Instruction Manual

Down - This button decreases the trip current in 5mA increments. Hold the button and the value will

scroll faster the longer depressed. Once 0mA limit is reached the value will then loop over and start

again from 500mA.

Set - This button sets the selected current for the next trip time test. The TnT+ will then return to the

current trip time test screen.

Changing the RCD type:

Depending on the RCD, the RCD type needs to be selected from the options menu. These options change the

pass / fail values when performing RCD tests. Please make sure that you have the correct RCD type selected.

The RCD types are:

Type I:

Has a trip time of < 40mS and a trip current of < 10mA. These types of RCD's are mainly used on sites

containing medical equipment. These types of RCD's must be compliant with AS3551.

Type II:

Has a trip time of < 300mS and a trip current of < 30mA. Unless specified on the RCD device nearly all RCD

will be this type. This is the default setting on new units.

Selects type I and saves to memory

Selects type II and saves to memory

RCD Timed Test (continued):

Press the F1 key to select the 0 deg test and the F2 key to select the 180 deg test.

Use the F1/F2 keys to scroll through the multipliers X0.5 X1.0 X5.0 of the set current.

Maximum output current = 500mA. I.E if set test current were 100mA then 100 X 5.0 =500mA.

If set test current = 200mA then maximum output 5 x 200mA =1A is out of range. Unit will not deliver this

output current and display on Screen “OUT of RANGE”.

Press F3 to start test. TnT will display results for 5 seconds after mains supply is tripped. If the power is not

reset by the time the unit loses power then the result will be displayed on power on.

Caution: Pressing F3 at this point will cause tripping if RCD fitted to circuit

RAMP CURRENT TEST. This testing principal is designed to trip RCD devices using a ramping up current

value, to determine the trip current of the RCD device. This useful test allows the user to determine circuit

leakage load/pre-loading of RCD circuit. This can assist in determining nuisance tripping issues or

determining RCD performance if suspected faulty or inconsistent in performance. The TnT has a nominal

leakage current of 2mA, which should be added to the result of test. E,G. if RCD tripped at 22mA +

2mA(TnT+)=24mA trip current.

RCD Trip Current. Press F2 to show the Trip current screen.