Martindale Electric NC2 User Manual

NC2

VOLTAGE TESTER

Instruction
Manual

ALWAYS READ THESE INSTRUCTIONS

BEFORE PROCEEDING

Thank you for buying one of our products. For

safety and full understanding of its benefits

please read this manual before use. Technical

support is available from 01923 441717 and

[e-mail].

CONTENTS

1 Safety Information 1

1.1 Meaning of Symbols and Markings 1

1.2 Precautions 2

2 Introduction 4

2.1 Inspection 4

2.2 Description 4

2.3 Accessories 4

2.4 Battery Installation 4

3 Operation 5

3.1 NC2 Layout 5

3.2 ON/OFF Button 5

3.3 Low Battery Indication 5

3.4 Torch 6

3.5 Proving Check 6

3.6 Testing Considerations 6

3.7 Testing for the Presence of Voltage 7

4 Maintenance 8

4.1 Battery Replacement 8

4.2 Cleaning 8

4.3 Repair and Service 9

4.4 Storage Conditions 9

5 Warranty 10

Specifications

1 SAFETY INFORMATION

REMEMBER:

SAFETY IS NO ACCIDENT

These instructions contain both information

and warnings that are necessary for the safe

operation and maintenance of this product. It

is recommended that you read the instructions

carefully and ensure that the contents are fully

understood. Failure to understand and to comply

with the warnings and instructions can result in

serious injury, damage or even death.

Particular attention should be paid to the Warnings,

Precautions and Technical Specifications.

Please keep these instructions for future reference.

Updated instructions and product information are

available at: www.martindale-electric.co.uk

1.1 Meaning of Symbols and Markings

Caution - risk of danger & refer to

instructions

Caution - risk of electric shock

Equipment protected by double or

reinforced insulation (Class II)

CAT IV (Measurement Category IV) is applicable

to test and measuring equipment

connected at the source of the building’s

low-voltage MAINS installation.
For further information on measurement
categories visit
www.martindale-electric.co.uk

Equipment complies with relevant EU

Directives

End of life disposal of this equipment

should be in accordance with relevant

EU Directives

1

1.2 Precautions

This product has been designed with your safety
in mind, but please pay attention to the following
warnings and cautions before use.

Warnings
In order to avoid the danger of electrical shock, it
is important that proper safety measures are taken
when working with voltages exceeding 30V AC
rms, 42V AC peak or 60V DC.

Where applicable other safety measures such as
the use of protective gloves, goggles etc. should be
employed.

The voltage tester must only be used by a skilled
and competent person who is familiar with the
relevant regulations, the safety risks involved and
the consequent normal safe working practices,
and under the conditions and for the purposes for
which it has been constructed and specified.

Before each use the voltage tester should be
examined for damage, cracks, cuts or scratches.
Do not use if damaged in any way.

Make sure the voltage tester is dry, clean and free
from dust, grease and moisture while in use to
avoid the danger from electric shock due to surface
leakage.

Before and after each use, the voltage tester must
be proven using a suitable known good AC voltage
source. Do not use the voltage tester if it does not
function correctly during proving.

Testing for a voltage that exceeds the specified
limits of the voltage tester may damage the voltage
tester and may expose the operator to a shock
hazard. Always check the voltage testers specified
limits before use.

2

Do not use if the battery compartment end cap
is not fitted.

Always keep your fingers behind the finger
guard.

Do not use the voltage tester during rain or
precipitation.

The voltage tester will not detect DC voltage.

Cautions

Avoid severe mechanical shock or vibration and
extreme temperature.

To avoid corrosion from leaking batteries, remove
the batteries when the unit is not in use for an
extended period.

3

2. INTRODUCTION

2.1 Inspection

Examine the shipping carton for any sign of
damage. Inspect the unit and any accessories for
damage. If there is any damage then consult your
distributor immediately.

2.2 Description

The Martindale NC2 is a non-contact voltage
tester with the following features:

u Contactless voltage testing between 200V AC

and 1000V AC

u Use of advanced digital filter technology for

reliable indication

u Torch
u Measurement category CAT IV 1000V
u Designed to meet BS EN 61010-1
u IP40 rating to BS EN 60529

2.3 Accessories

The NC2 comes with the following accessories:

u 2 x 1.5V Alkaline AAA batteries
u Instructions

2.4 Battery Installation

Refer to Section 4.1 (Battery Replacement) for
the battery installation instructions for the NC2.

4

3. OPERATION

3.1 NC2 Layout

5

6

1

4

2

3

1

Test tip for voltage test

2

Torch

3

LED illumination area

4

Hand grip area

5

On/Off button

6

Torch button

7

Battery compartment end cap

3.2 ON/OFF Button

Pressing the ON/OFF button (5) for 1 second
will turn on the NC2. The red LED in the LED
illumination area (3) will flash at a rate of once a
second to indicate the unit is activated.

To power off the unit press the ON/OFF button (5)
for at least 2 seconds. The flashing red LED will
cease.

7

3.3 Low Battery Indication

If the red LED illuminates continuously without the
buzzer sounding, the batteries require replacing
as reliable indication can no longer be guaranteed.
Refer to Section 4.1 (Battery Replacement).

5

3.4 Torch

To turn on the torch (2), press and hold the torch
button (6). Press the torch button (6) a second
time to turn the torch off.

3.5 Proving Check

Before each use the voltage tester should be
examined for cracks or any other damage. If
there is any doubt the voltage tester should not

be used.

Before and after use, verify the voltage tester
is functioning correctly using a known good AC
voltage source or proving unit. The AC voltage
source or proving unit must be within the
specified range of the voltage tester.

When the test tip (1) is held in close proximity
to the voltage source, the red LED flashes more
quickly and the buzzer sounds repeatedly.

Do not use the voltage tester if it does not
function correctly during proving.

Warning

If the voltage source exceeds the specified
limits of the voltage tester the voltage tester
may be damaged and the operator may be
exposed to a shock hazard. Always check the
voltage magnitude of the voltage source before
proceeding with a proving check.

3.6 Testing Considerations

From some directions the neutral and earth
conductors in cables will shield the live, so
it is important that a cable is probed from all
directions.

When testing for the presence of voltage in
multi-core cables always run the probe tip along
a short length of cable so as to overcome the
shielding effect of the natural twist in conductors.

6

Be aware that if the presence of AC voltage
is not indicated, voltage could still be present. The
unit indicates active voltages in the presence of
electrostatic fields. If the field strength is low the
unit may not indicate. This could be due to factors
such as:

u Low mains voltage (<200V AC)
u Shielded wire/cables
u Thickness and types of insulation
u Distance from the voltage source

If testing at locations with high background noise
levels, always determine whether the buzzer is
perceptible before relying solely on the buzzer
indication.

3.7 Testing for the Presence of Voltage

Non-contact voltage testers are not suitable
for proving dead. A two pole voltage detector
should always be used for that purpose.

Referring to section 3.2 power on the NC2.

The voltage tester must be gripped fully and
firmly around the hand grip to obtain optimum and
consistent sensitivity. A loose grip during testing
may reduce the voltage tester’s sensitivity.

While taking all required safety precautions
position the test tip (1) of the NC2 in close
proximity to the cable, UUT or location to be
tested for voltage.

If a voltage is detected, the red LED will flash
more quickly and the buzzer will sound repeatedly.

Switch the tester off when not in use to conserve
battery power.

7

4. MAINTENANCE

4.1 Battery Replacement

To gain access to the battery compartment,
press down on the square recess and pull back
the battery compartment end cap (7).

Fit 2 new 1.5V, AAA alkaline batteries (IEC LR03,
NEDA 24A), observing correct polarity.

Replace the battery compartment end cap.

Note: Do not mix old and new batteries.

Square recess

Pull

7

4.2 Cleaning

Warning

To reduce the risk of surface leakage, this
instrument must be kept in a clean condition.

If contamination is found, clean with a damp
soft cloth and if necessary a mild detergent or
alcohol. Do not use abrasives, abrasive solvents,
or detergents which can cause damage to the
unit. If a mild detergent is used, the unit should
subsequently be thoroughly cleaned with a water
dampened soft cloth. After cleaning, dry and
allow to remain in a dry environment for 2 hours
before use.

8

4.3 Repair and Service

There are no user serviceable parts in this unit.
Return to Martindale Electric if faulty. Our service
department will quote promptly to repair any fault
that occurs outside the guarantee period.

Before the unit is returned, please ensure that
you have checked the unit and batteries.

4.4 Storage Conditions

The instrument should be kept in warm dry
conditions away from direct sources of heat or
sunlight, and in such a manner as to preserve
the working life of the unit. It is strongly advised
that the unit is not kept in a tool box where other
tools may damage it.

9

5. WARRANTY AND LIMITATION OF LIABILITY

This Martindale product is warranted to be free
from defects in material and workmanship under
normal use and service. The warranty period
is 2 years and begins on the date of receipt by
the end user. This warranty extends only to the
original buyer or end-user customer, and does
not apply to fuses, disposable batteries, test
leads or to any product which, in Martindale’s
opinion, has been misused, altered, neglected,
contaminated, or damaged by accident or
abnormal conditions of operation, handling or
storage.

Martindale authorised resellers shall extend
this warranty on new and unused products to
end-user customers only but have no authority to
extend a greater or different warranty on behalf
of Martindale.

Martindale’s warranty obligation is limited, at
Martindale’s option, to refund of the purchase
price, free of charge repair, or replacement of a
defective product which is returned to Martindale
within the warranty period.

This warranty is the buyer’s sole and exclusive
remedy and is in lieu of all other warranties,
expressed or implied, including but not limited to
any implied warranty of merchantability or fitness
for a particular purpose. Martindale shall not
be liable for any special, indirect, incidental or
consequential damages or losses, including loss
of data, arising from any cause or theory.

Since some jurisdictions do not allow limitation of
the term of an implied warranty, or exclusion or
limitation of incidental or consequential damages,
the limitations and exclusions of this warranty
may not apply to every buyer. If any part of
any provision of this warranty is held invalid or

10

unenforceable by a court or other decision-maker
of competent jurisdiction, such holding will not
affect the validity or enforceability of any other
provision or other part of that provision.

Nothing in this statement reduces your statutory
rights.

11

Specication
NC2 Voltage Tester

Electrical

Maximum voltage: 1000V AC rms
Voltage sensitivity range:
200 to 1000V AC rms
Frequency range: 40 to 400Hz

Environmental

Temperature & Humidity (Operating & Storage):
0°C to 40°C ≤ 80% R.H.
Altitude: up to 2000m
Pollution degree 2

General

Power: 2 x 1.5V, AAA alkaline batteries (IEC LR03,
NEDA 24A)
Battery consumption: 80mA approx.
Dimensions: 158(L) x 20(W) x 27(D) mm
Weight: 55g approx.
Includes: 2 x 1.5V AAA batteries, instructions

Safety
Conforms to BS EN 61010-1:2010 CAT IV 1000 V
Class II, Double insulation
IP rating: IP40 to BS EN 60529

EMC

Conforms to BS EN 61326-1

Check out what else you can get from Martindale:

• 18th Edition Testers

• Accessories

• Calibration Equipment

• Continuity Testers

• Electricians’ Kits

• Environmental Products

• Full Calibration & Repair Service

• Fuse Finders

• Digital Clamp Meters

• Digital Multimeters

• Labels

• Microwave Leakage Detectors

• Motor Maintenance Equipment

• Multifunction Testers

• Non-trip Loop Testers

• Pat Testers & Accessories

• Phase Rotation Testers

• Proving Units

• Socket Testers

• Thermometers & Probes

• Test Leads

• Voltage Indicators

• Specialist Metrohm Testers (4 & 5kV)

• Specialist Drummond Testers

Martindale Electric Company Limited

Metrohm House, 12 Imperial Park, Imperial Way,

Tel: [phone] Fax: [phone]

Registered in England No. 3387451. E. & O.E.

Watford WD24 4PP, UK

E-mail: [e-mail]

Website: www.martindale-electric.co.uk

© 2018 Martindale Electric Company Ltd.

LITNC2 Document V2