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Whilst No-Trip testing at points on the final circuit will normally function with a high level of
accuracy, it should be noted that the low current measurement technique used is more likely
to be adversely affected by external factors.
Circumstances such as testing at seldom used socket outlets with tarnished contacts or
testing a circuit with a lot of background noise from electronic apparatus can result in the
occasional erroneous reading.
For this reason it is recommended that multiple measurements are made when using the No-
trip mode and any isolated odd results are ignored. When taking multiple readings the tester
should be disconnected from the supply between consecutive tests.
For safety reasons the No-Trip mode is recommended for all measurements made on TT
systems.
* Where practical all other equipment powered by the same circuit should be switched off
before testing. This will reduce the chances of the RCD tripping as a result of combined
leakages.
PFC/PSC
In both Loop test modes the KT63DL will also display the supply voltage and at the touch of
the PFC button the PFC/PSC will be displayed.
Test lead configuration
The KT63DL Loop test function can be used with 2 different types of connecting lead. It is
important to understand and use the correct lead configuration for each test mode or you
may not obtain the correct results.
Lead options
1 Ref: KAMP12 The mains lead with 3 x 4mm plug to 13A plug
2 Ref: ACC063 The 3-Pole distribution board test lead set that can be fitted with either prod
tips or crocodile clips as required.
The lead is an integral part of the tester set-up and should accompany the tester when being
returned for re-calibration or service. Do not use any other type of mains lead or test lead set.
