Martindale Electric NC4 Bedienungsanleitung

NC4 DUAL RANGE

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

support@martindale-electric.co.uk.

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 NC4 Layout 5

3.2 ON/OFF and Voltage Sensitivity 5

Range Button

3.3 Low Battery Indication 6

3.4 Torch 6

3.5 Proving Check 6

3.6 Testing Considerations 7

3.7 Testing for the Presence of Voltage 7

4 Maintenance 9

4.1 Battery Replacement 9

4.2 Cleaning 9

4.3 Repair and Service 10

4.4 Storage Conditions 10

5 Warranty 11

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

1.2 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.

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.

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 NC4 is a non-contact voltage

tester with the following features:

uContactless voltage testing between 12V AC

and 1000V AC

uManual voltage sensitivity range selection:

12-1000V AC and 50-1000V AC

uUse of advanced digital ﬁlter technology for

reliable indication

uTorch

uAuto power off

uMeasurement category CAT IV 1000V

uDesigned to meet BS EN 61010-1

uIP40 rating to BS EN 60529

2.3 Accessories

The NC4 comes with the following accessories:

u2 x 1.5V Alkaline AAA batteries

uInstructions

2.4 Battery Installation

Refer to Section 4.1 (Battery Replacement) for

the battery installation instructions for the NC4.

3. OPERATION

3.1 NC4 Layout

567

1Test tip for voltage test

2Torch

3LED illumination area

4Hand grip area

5On/Off and voltage sensitivity range button

6Torch button

7Battery compartment end cap

3.2 ON/OFF and Voltage Sensitivity Range

Button

Pressing the ON/OFF button (5) for 1 second

will turn on the NC4. The red LED in the LED

illumination area (3) will ﬂash at a rate of once a

second to indicate the unit is activated.

The NC4 will default to the 50 to 1000V voltage

sensitivity range.

To change the voltage sensitivity range to 12V to

1000V, press the voltage sensitivity range button

(5) for less than 1 second. The red LED in the LED

illumination area (3) will now double ﬂash at a rate

of once a second.

To power off the unit press the ON/OFF button (5)

for at least 2 seconds. The ﬂashing red LED will

cease.

The unit will auto power off after 5 minutes.

3.3 Low Battery Indication

If the red LED blinks off intermittently without

the buzzer sounding, the batteries require

replacing as reliable indication can no longer

be guaranteed. Refer to Section 4.1 (Battery

Replacement).

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 must illuminate

and the buzzer must sound.

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.

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:

uLow mains voltage (<12V AC)

uShielded wire/cables

uThickness and types of insulation

uDistance 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 NC4 and

set it to the required voltage sensitivity range.

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 NC4 in close

proximity to the cable, UUT or location to be

tested for voltage.

If a voltage is detected, the red LED will

illuminate and the buzzer will sound.

Switch the tester off when not in use to conserve

battery power.

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