KT63
Multifunction Installation Tester
Operating Instructions
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Index
Safety information and explanation of symbols used ......................3
Features of the KT63 ....................................................................5
Special Polarity Test Function. ........................................................... 6
Audible tones ...............................................................................7
Overview of the switches and LCD ..............................................8
Test lead inputs ............................................................................9
Continuity Test Function ..............................................................10
Continuity Test Procedure ................................................................ 10
Lead Nulling ................................................................................... 10
Hands Free Continuity Testing .......................................................... 11
Insulation Test Function ..............................................................12
Insulation Test Procedure ................................................................ 12
Hands Free Insulation Testing .......................................................... 13
Loop Test functions ....................................................................14
High Current mode ......................................................................... 14
No Trip Mode .................................................................................14
PFC/PSC ....................................................................................... 15
Test lead configuration .................................................................... 15
Lead configuration for No-Trip testing ............................................... 16
Lead configuration for High current 2-wire testing ............................. 16
Loop Test Procedures ..................................................................... 17
No Trip Loop test (Zs) ..................................................................... 17
High current test (Ze) ...................................................................... 18
Hands Free Loop testing .................................................................18
RCD Test Function ......................................................................19
Ramp test ...................................................................................... 20
Sinusoidal polarity (the 0° or 180° test) ............................................ 20
RCD test procedure ........................................................................ 21
User selected test ..........................................................................21
30mA Automatic test ...................................................................... 22
Ramp test ...................................................................................... 22
Specifications and tolerances .....................................................23
Continuity Test Range Accuracy ....................................................... 23
Insulation Test Range Accuracy ........................................................ 23
Insulation Output Voltage ................................................................. 23
Loop Test Range Accuracy .............................................................. 23
RCD Test Range Accuracy ............................................................... 24
Safety information and explanation of symbols used
Because the KT63 is a multi function tester used for testing both live and dead
circuits there are different safety issues that apply to the individual functions. Before
using your KT63 please read these instructions paying particular attention to the
general safety warnings below and those at the start of each section.
Before using the tester check the case and the test leads for damage.
If any damage is noticed the unit should be withdrawn from service and returned to
Kewtech for repair.
It is important for safety that only one set of leads can be fitted at a time. In the
unlikely event that the interlock cover is damaged the tester should be withdrawn
from service and returned to Kewtech for repair
Caution read this manual for safety information
The Continuity and Insulation functions are rated at 500V Category III
The Loop and RCD functions are rated at 300V Category IV
When installing batteries observe correct polarity do not mix old and new batteries
- Dispose of used batteries in accordance with local regulations – Never incinerate
batteries.
Do not use this tester in a manner other than that described in this booklet.
To clean the tester wipe with a damp cloth with a mild soap solution taking care
not to allow water ingress into the input terminals. Do not use solvents and do not
immerse. Allow the tester to fully dry before use.
The KT 63 is fuse protected against damage by accidental connection to an overvoltage supply. The fuse is located inside the battery compartment and can be
accessed by removing the two small battery cover retaining screws on the back
of the case. Always ensure that test leads are disconnected before removing the
battery cover.
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The broken fuse indicator on the LCD will flag if the fuse has blown. It must be replaced with
the correct type
Fuse type: F 500mA fast blow ceramic 600V.
The enclosure is double insulated
>
Protected against over voltage to 550V
:
550V
Features of the KT63
The KT 63 is packed with design features that maximise both convenience and safety. These
include:
Large display
To give the clearest results the KT63 uses a large auto-backlit LCD which makes reading the
test results easy even when used in poorly lit areas.
For safety reasons the tester is shipped without batteries fitted. To install batteries remove
the two small crosshead screws on the back of the instrument that retain the battery cover
and fit four Alkaline batteries type AA / LR6 in accordance with the polarity shown
The KT63 complies fully with the requirements of EN61010.
The following table details the operating ranges for the individual functions compliant with the
performance requirements of EN61557.
MEASUREMENT
RANGE
CONTINUITY 0.00 Ω - 19.99 kΩ. 0.1 Ω - 9.99 kΩ. I
INSULATION 0.00 MΩ - 1999 MΩ.0.1 MΩ - 1990 MΩ. I
LOOP HI-I 0.01 Ω - 500 Ω 1.04 Ω - 500 Ω.. 230V
LOOP NO-TRIP 0.01 Ω - 500 Ω. 1.04 Ω - 500 Ω. 230V
RCD TRIP TIME 5 ms – 1999 ms 38 ms – 1999 ms.
OPERATING RANGE
PER EN61557
OTHER
N>200mA
Uq < 7V
N = 1mA
50Hz
50Hz
Auto shut down
.
To preserve battery life when not in use the KT63 incorporates an Auto-Off function that
powers the unit down after three minutes of inactivity. To resume use after an Auto shut down
a single press of any of the function buttons will power up the unit.
Battery check
The first position either side of the off position of the rotary selector switch is a battery
check function.
Extended battery life
For simplicity the tester is powered by just four conventional AA (LR6) alkaline batteries. The
KT63 has much lower power consumption than most testers and therefore gives excellent
battery life.
In addition to the battery status indicator that shows on the LCD, when the battery power
is becoming very low the Red warning LED will light to show that imminent replacement is
necessary. Always use Alkaline rather than zinc carbon batteries.
Easy to locate
The test lead inputs are located on the top of the case allowing the tester to stand vertically
or be laid flat. Alternatively the unit can be carried by the supplied neck strap.
Hands Free
Most of the test functions can utilise the Hands-Free mode in which the tester is primed to
automatically start the test as soon as the probes are connected to a circuit, thereby leaving
your hands free to hold the test probes
.
Socket wiring check
To protect both the user and the instrument against harm caused by accidental connection to
an incorrectly wired supply the tester will automatically check the polarity upon connection to
a live supply. If the wiring has been incorrectly connected testing will be inhibited an alarm will
sound with flashing LED.
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Special polarity test function.
It is a little known fact that a system can be reverse wired with Line (Phase) to earth/neutral
and earth/neutral to Line (Phase). The sockets will all work and conventional loop testers will
show and test that everything is correct despite this very dangerous wiring condition.
Although extremely rare, this miswire condition can exist so if your test shows this fault do not
proceed – if in any doubt advise your customer to contact their supply company immediately.
Audible tones
A simple selection of audible tones is used to supplement the visual display. These help the
user by providing intuitive feedback during testing. In addition to warning about dangerous
or unstable supply conditions they provide a very quick confirmation that the measurement
process is taking place and, upon completion of the test, a warning if the results are likely to
be regarded as a failure.
The meaning of the tone for each individual function is covered in detail in the relevant
section. Generally however there are five types of tone emitted.
Danger
A rising siren type alarm
Warning
A continuous 2 tone alarm
Wait-Test in progress
A steady beeping sound
Test completed
A single beep
Alert
A short 2 tone alarm
In the event of a potentially dangerous situation such as
connecting to a live supply when configured for insulation
testing. Will be accompanied by the Red Voltage/Polarity
warning LED flashing.
An unsuitable supply configuration such as a mains supply
with incorrect polarity or having the leads connected
wrongly will be accompanied by the Red Voltage/Polarity
warning LED flashing
Emitted whilst a measurement is in progress. The same
tone is sounded when used in Handsfree mode to indicate
that continual measurement is being made
Sounded upon completion of a measurement to indicate
that the result is being displayed
Sounded when a test returns a result that is likely to be
regarded as a failure e.g. An insulation test that gives a
result of less than 2 MΩ
.
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