Drummond MTL20 Buku Petunjuk - Halaman 2

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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 indicator 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.

Before each use the voltage indicator should be examined for

damage, cracks, cuts or scratches to the housing, cable and prods.

The cable has black outer and contrasting inner insulation, to allow

damage to the cable to be easily identiﬁ ed. If there is any doubt the

voltage indicator should not be used.

Make sure the voltage indicator 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 indicator must be proven using

a suitable proving device or a known good voltage source. Do not use

the voltage indicator if any expected LED's fail to illuminate correctly

during proving.

Testing for a voltage that exceeds the speciﬁ ed limits of the voltage

indicator may damage the voltage indicator and may expose the

operator to a shock hazard. Always check the voltage indicator's

speciﬁ ed limits before use.

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 MTL10 and MTL20 test lamps are two-pole voltage indicators

for universal applications. They are designed to be used by

skilled persons in accordance with safe methods of work, and are

constructed in accordance with the applicable safety standards to

provide safe and reliable indication.

The MTL10 and MTL20 have the following features:

AC and DC Voltage tests up to 500V AC and 750V DC

Bright LED indication

Full voltage indication function without batteries

PTC thermistor ﬁ tted in probe to limit current in the event of cable

damage

Contrasting colour of inner sheath to highlight cable damage

Ergonomic and robust housing

Probe tips comply with GS38

Measurement Category CAT IV 600V, CAT III 1000V

Constructed in compliance with EN 61243-3

IP64 rated environmental protection for internal electronics

2.3 Accessories (included)

2pc. Straight prod

1pc. L-shaped prod

Instructions

The speciﬁ ed measurement category means the voltage indicator

will be safe to the user if connected to a voltage up to 1000V to

earth on a CAT II or CAT III installation and 600V to earth on a CAT

IV installation. It does not mean it can be used to test for a voltage

beyond its maximum speciﬁ ed limits.

If using the voltage indicator in falling rain or damp conditions, the

operator must use additional protection to avoid the danger from

electric shock due to surface leakage.

Select appropriate test prods and secure with captive ring nuts. The

L-shaped test prods should be oriented in one of four directions using

the square location feature before it is secured.

When changing or adjusting the prods, ensure that both prods have

been disconnected from any source of power or other equipment.

Always keep your ﬁ ngers behind the ﬁ nger guards. Never touch the

exposed metal prod tips.

The different indicating signals of the voltage indicator (including the

ELV limit indication) are not to be used for measuring purposes.

The voltage indicator must not be dismantled or modiﬁ ed in any way

by unauthorized persons. The safety of the voltage indicator cannot be

guaranteed under such circumstances and it must not be used.

Cautions

Avoid severe mechanical shock or vibration and extreme temperature.

If the voltage indicator has been stored or transported in temperatures

outside its normal operating range it should be given sufﬁ cient time to

stabilise in the environment where it is to be used. An acclimatisation

time of at least 2 hours is required prior to operation of the voltage

indicator.

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MTL10 MTL20 instructions rev8.indd 5

3. OPERATION

3.1 Control Elements and Connections

A - Instrument body

B - LED indicator bands

C - Probe handle

D - Straight prod

E - L shaped prod

F - Switches (MTL20 only)

3.2 Description of LED Indicators

400V band

120V band

05/12/2013 11:31:06

MTL10

MTL20

230V band

50V band