8
9
Overview of the Display
A
Loop reading selected (Ω)
B
PFC/PSC prospective fault current / prospective short
circuit current reading selected (A/kA)
C
Loop test mode selected – no trip (default) or Hi-I (high current)
D
HANDSFREE operation
E
Ohms symbol
F
Volts (AC)
G
Voltage measurement function L-N (default) L-E and N-E
H
Fault current
I
Wait – result calculation in progress
J
Wait – tester has gone over operating temperature
K
Battery Condition ( =good)
L
Greater than (>) less than (<) indication
Loop-PFC/PSC Testing
1
Power ON/OFF – Pressing this button turns the KTD40 on and pressing again turns
the unit off. Intelligent auto power-off occurs after 3 minutes of inactivity, but for
safety the instrument stays powered if it is displaying a socket wiring fault.
2
When the KTD40 is first connected to a live socket it will automatically test
the socket wiring to establish that the circuit wires have been connected to the
correct terminals on the back of the socket. If all three LEDs light GREEN and no
sound is emitted the wiring status is correct and you can proceed to the incoming
supply polarity test (step 3).
A fault with the socket wiring will be indicated by an audible alternating tone and
the LEDs, at least one of which will be red or orange, will flash. If a fault indication
is given – DO NOT PROCEED – investigation and remedial action is required before
you can conduct a loop test.
If this happens placing your thumb on the grey coloured polarity test pad will now
activate the ‘fault location’ function. With your thumb firmly on the pad check the
indication given by the LEDs against the chart on the back cover to identify where
the main problem lies.
Note:
The colour of the LEDs may change when the pad is touched.
3
Incoming supply Polarity Test – this important test is discussed in full on
page 3 of this manual, please read.
To conduct the test with all three LEDs lit GREEN place your thumb on the grey
coloured polarity test pad area. If the supply polarity is correct there will be no
change in indication and you can proceed to step 4. If the supply polarity has been
reversed the three LEDs will turn red and flash.
If this happens stop testing and notify the supply company immediately.
4
Check that the mains voltage is in the correct range 207–253V AC.
Note:
All tests are inhibited until the mains voltage appears in the display.
5
NO-TRIP
Your tester defaults to no-trip loop testing when you first switch on –
button five re-selects no-trip loop test if you have selected other functions.
6
TEST
A brief press of the test button will initiate the loop test and after a few
seconds the result will be displayed (Important: see notes on page 4).
The KTD40 also has a HANDSFREE test function that is activated by pressing the
test button before connecting to the mains supply. This is very useful for testing at
luminaires or similar connecting strips when your hands are occupied by holding
the test probes.
LOOPPFC
–
PSC HANDSFREE
WAIT
NO-TRIPH
I
-
I
K
J
H
C
E
B
kA
V
LE
NE
A
D
F
H
L
G
I
PRESS AND HOLD
Ω
