Kewtech LOOPCHECK107 User Manual

Your guide to easy

Socket Outlet Testing

and instructions for use of:

Loopcheck 107

Advanced socket
tester with loop
function

kewtechcorp.com

Caution

Before use check the socket tester's case and pins for
any signs of damage.

Do not use if the case is broken or damaged. To check
the correct functioning of the socket tester, plug it into
a known correctly-wired live 13A socket.

To clean the tester use only a soft dry cloth.

This unit is maintenance free and contains no user
serviceable components. In the unlikely event that this
unit malfunctions, it should be withdrawn from service
and returned to Kewtech.

This tester must not be used in a manner not specified
by Kewtech.

Good work practice

Use of a Socket Tester will be seen to show a
responsible attitude to electrical safety, plus the very
reasonable price of Kewtech testers means they place a
cost effective solution in the hands of many more users
at the front end of responsibility and care.

Who should be testing socket outlets?

Basically anyone who wants to know the mains socket
about to be used is correctly wired and safe to plug into.

In particular those with a responsibility of care for their
own homes, employees and the public.

• Home owners

• Land lords

• Local authorities

• Police forces

• Hospitals, including home visits

• Schools and colleges

• Sports facilities

• Military housing and education

• IT managers

• Heads of department

• Health and Safety officers

BS EN

61010-1

The simple solution for testing
socket outlets

Logical ‘Green

for Go’

Bright, easy to read
LEDs

Clear audible
indication

Error free testing

Product features

• Bright, durable LEDs out-perform fragile, low

visibility neons

• Patented ‘Fault Locate’ shows actual position of

Pin – Line (Live), Neutral or Earth

• Unique new Earth Loop Test

• Tough, smooth-contoured construction

• Rubber overmould tactile case

• Advanced electronic circuits mean positive and

reliable indication

• Modern production methods ensure great

performance and value

• Audible signal gives additional information

• Microprocessor control with built-in self check

What a Kewtech tester WILL
tell you

The Loopcheck 107 is unique in that it is the only
socket tester that carries out a loop test at mains
frequency to check the actual condition of the wiring.

Particular emphasis is placed on detecting very
dangerous wiring conditions such as reversed line
(live) earth connections, disconnected wires and high
earth values.

230V 13 amp BS 1363 Socket Testers with
self-check and patented ‘Fault Locate’ plus
Earth check

• First Socket Tester to indicate actual fault location

– Line (live), Neutral or Earth

• Unique earth loop test at mains frequency to

check the actual condition of the wiring

• Built-in automatic visible self-check ensures total

confidence in correct functioning at all times

• Tri-coloured LEDs (green, red, orange) give clear

and positive indication of Good wiring plus
17 possible fault conditions

• Mains polarity check

• 30mA RCD check

What a Kewtech tester will NOT
tell you

Kewtech socket testers are for simple first line
diagnosis for use by those with and without electrical
skills. If a problem at the socket is shown it should
immediately be investigated by a suitably qualified
electrician or contractor recognised by organisations
such as:

NAPIT (www.napit.org.uk)

NICEIC (www.niceic.com)

ECA (www.eca.co.uk)

ECA of Scotland (www.select.org.uk)

STROMA (www.stroma.com)

This is an example of
‘Fault Locate’ showing
line (live), neutral,
reverse. LEDs flash red
plus warble tone.

This is an example of
the Earth Loop Test
showing green – good,
less than 1.8Ω.

Specifications

Socket wiring check

Three green LEDs and a continuous tone indicate that the
socket is correctly wired. Earth, Line (Live) and neutral
are all in the correct position. Any other indication, such
as open circuit or swapped connections, is shown by
an orange or red LED accompanied by a warble tone.
The socket is incorrectly wired and all further tests are
inhibited.

Note: Like all socket (and other similar) testers a neutral
– earth swap cannot be detected unless the distribution
board is fitted with an RCD in which case the RCD will trip.

Socket condition check

This is carried out by injecting a loop impedance test
current between line (live) and neutral and also between
neutral and earth. If during the pre-test there is an
indication the earthed metal work could raise to touch
voltage of greater than 25V the test is inhibited.

The result is shown by one of three LEDs. Rating 230V. Input current: <18mA (L–E <7mA)

Indication LED Tone

Good Green Continuous

Check Amber Warble

Urgent Check Red Warble

Mains Polarity test

This is a capacitively coupled pad. The user is the earth
reference point for true earth.

This test is used to indicate that there is not a line (live)
neutral swap of the mains supply at the supply entry point
to the premises.

RCD test (30mA RCD only)

Operation of the test switch injects a test current of
30mA Line (Live) to earth to provide an operational check
for the RCD. The test current is restricted to 300ms.

Frequency: 50Hz.

Suitable for use in environmental conditions:

Temperature 0–40˚C

Humidity: <95% non-condensing

This tester is not intended for continuous use – do not
leave connected in a socket for longer than 2 minutes.

Instructions for use

Note: This tester is intended for use only on a 230V
mains 13A socket outlet. (BS 1363 configuration)

1 Plug the tester into a 13A socket outlet.

2 Switch on.

When first powered up the LEDs in the grey triangle
flash green then red once as it performs a self test.
This is immediately followed by a socket correct wiring

test. The LEDs will
show all green with
a continuous tone if
the wiring is correct.

Any other LED colour
or warble tone
indicates incorrect
wiring and all further
tests are inhibited.
Check the indication

displayed by the
LEDs against the table for an indication of the wiring
status.

After approximately 4 seconds the green LEDs turn off.

3 Read the socket outlet condition.

The tester will then check the condition of the wiring
and show the result in the three LED Loop Test bar.

Green LED with
continuous tone
indicates the
wiring condition is
good with safety
earth path less
than 1.80Ω.

Flashing amber
LED with warble
tone indicates
the incoming

mains should be
checked to see if the system is using an earth rod for
protection. Safety earth path is between 1.80Ω and
92Ω. If the system is protected by an earth rod then
an RCD should be present.

Flashing red LED with warbling means the earth path
is over 93Ω. This may not be dangerous but the
value should be checked using an earth loop tester
with a read out to check the value meets the wiring
regulations.

The tester is designed not to trip RCDs.

If the main distribution board is fitted with an RCD and it
trips during the test this could be:

a) there is already high leakage current between Line
(Live) and earth

b) the earth and neutral are reversed.

Either needs investigation by a qualified electrician.

Additional functions

4 Polarity Check

The LEDs in the grey triangle flash green with a
continuous tone if it is correct.

If the LEDs flash red with a warble tone this is
potentially a very hazardous condition – immediate
attention required.

Wiring Indication Chart

LEDs show actual pin location Line, Earth, Neutral

5

RCD Check (30mA RCD)

Press the purple test switch for at least half a second to
start the RCD test.

If the LED goes out
and the tone stops
the RCD has tripped
and is working.

If the LED remains
illuminated and the
tone continues, the
test button has not

long enough to start the test. If the LED in the Loop Test
bar goes out and the three LEDs in the grey triangle
flash amber accompanied by a warble tone, the test
current has been applied for 300ms and the RCD has
not tripped. It should be investigated.

been pressed for

Note: LEDs will also flash to indicate fault condition.

Kewtech Corporation Limited

T: 01494 792 212 F: 01494 791 826 E: [e-mail]

kewtechcorp.com