6
7
Test lead configuration
Lead configuration for High Current 2-wire testing with TLI feature
The TLI (True Loop Impedence) function is intended for use at distribution boards and
similar points where you are measuring on the supply side of any Switch/RCD gear.
The TLI measurement function is selected by pressing button 9 labelled ‘Ze/DB’. This
function uses the maximum high current of the tester and requires the use of the
distribution board lead set configured in 2-wire mode. Do not use this function with the
mains lead or the distribution lead set in 3-wire mode.
To arrange the test leads in 2-wire mode pull the blue prod off the blue test lead and
plug the exposed 4mm connector into the back of the green connector as shown below.
You will now have the Earth and Neutral leads connected together ready for connection
to the Earth or Neutral conductor to be tested.
Operation – a Detailed View of the KTD40
2
Three LEDs show
socket wiring
status
4
LCD - default
L-N voltage
measurement
1
On/Off button
5
No-trip loop select
(default)
7
No-trip PFC
(prospective fault
current)
6
Push to start test
9
High current
loop impedance
test
8
Voltage select
L-N (default) L-E
and N-E
3
Polarity Test
10
High current
PFC test
