Drummond MTL10 Instruction Manual
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Drummond MTL10 Instruction Manual

Test lamps
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MTL10 & MTL20
TEST LAMPS
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Summary of Contents for Drummond MTL10

  • Page 1 MTL10 & MTL20 TEST LAMPS Instruction Manual...

  • Page 2: Table Of Contents

    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 +44 (0)1923 441717 and support@martindale-electric.co.uk. CONTENTS Description Safety Information 2.1 Meaning of Symbols and Markings 2.2 Precautions...

  • Page 3: Description

    1. Description The MTL10 and MTL20 test lamps are two-pole voltage indicators / detectors 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.

  • Page 4: Safety Information

    2. 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.

  • Page 5: Precautions

    For further information on measurement categories refer to page 15 or visit www.martindale-electric.co.uk/measurement_categories.php Equipment complies with relevant EU Directives Equipment complies with relevant UK Conformity Assessed marking End of life disposal of this equipment should be in accordance with relevant Directives Extra low voltage.
  • Page 6 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.

  • Page 7: Safety Advice

    The voltage indicator must not be dismantled or modified 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.

  • Page 8: Introduction

    When an indication of voltage present appears on a part that is expected to be disconnected from the installation, it is highly recommended confirming by another means (e.g. use of an adequate voltage indicator, visual check of the disconnecting point of the electric circuit, etc.) that there is no operating voltage on the part to be tested and to conclude that the voltage indicated by the voltage indicator is an interference voltage.

  • Page 9: Operation

    4. OPERATION 4.1 Control Elements and Connections MTL10 MTL20 1 - Instrument body 2 - LED indicator bands 3 - Straight prod 4 - L shaped prod 5 - Probe handle 6 - Switches (MTL20 only)

  • Page 10: Description Of Led Indicators

    4.2 Description of LED Indicators 400V band 230V band 120V band 50V band The magnitude of a voltage is indicated by the illumination of LED’s in four separate bands around the top of the instrument body. The nominal voltage thresholds of the indicator LED bands are 50V, 120V, 230V and 400V and are marked next to the relevant band.

  • Page 11: Proving Check

    4.4 Proving Check 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 identified. If there is any doubt the voltage indicator should not be used.

  • Page 12: Testing For The Presence Of Hazardous Live Voltage

    If using a PD440S for proving, the press button switches on the MTL20 can also be functionally checked. In this case when both buttons are pressed simultaneously the 400V LED band will cease to illuminate, indicating that the added load of the MTL20 has caused the output voltage of the PD unit to drop, thereby proving the functionality of the switches and loading circuit.

  • Page 13: Interference (Phantom) Voltage

    Note: Interference (phantom) voltages can rise again after the push buttons are released. If a voltage indication re-appears on the LED bands while the buttons are not pressed, there may be a hazardous voltage that must be treated with caution. 4.7 Interference (Phantom) Voltage It is possible for wiring that is ‘dead’...

  • Page 14: Maintenance

    5. MAINTENANCE 5.1 Probe Replacement If the test prods become damaged they should be replaced. Replacement prods are available as spare items: • AC • Straight prod (DRUMTL2104) • L-shaped prod (DRUMTL2105) Contact your local distributor or contact Martindale Electric on 01923 441717 or email sales@martindale-electric.co.uk.

  • Page 15: Repair And Service

    2 hours before use. 5.4 Repair and Service There are no serviceable parts in this unit. The MTL10 and MTL20 are sealed units and must not be opened for any reason. 5.5 Storage Conditions...

  • Page 16: Warranty

    6. 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.

  • Page 17: Measurement Categories

    MEASUREMENT CATEGORIES CAT Ratings Stay safe - Match your test BS EN61010-1 Installation Categories equipment safety rating to the (CAT ratings) define the risks from installation category. hazardous transient impulses and potentially lethal short circuit currents CAT II: Socket outlets and similar on the mains supply system based points of the mains installation.

  • Page 18: Specifications

    Frequency range: DC, 40-65Hz Switchable load (MTL20 only): approx. 8.8kΩ load Test current: MTL10 & MTL20 (switches not operated): <3.5mA at 500V AC rms, 750V DC MTL20 (switches operated): approx. 28mA at 230V AC rms, DC approx. 60mA at 500V AC rms, DC...
  • Page 19 Specification MTL10 & MTL20 Mk2 Test Lamps Environmental Temperature (Operating & Storage): -10°C to 55°C Humidity (Operating & Storage): ≤ 85% R.H. Altitude: up to 2000m Pollution degree: 2 General Power: from circuit under test Dimensions: 213(L) x 112(W) x 72(D) mm.
  • Page 20 • Voltage Indicators • Labels • Specialist Metrohm Tester • Microwave Leakage Detectors • Specialist Drummond Testers Martindale Electric Co. Ltd. Metrohm House, 12 Imperial Park, Imperial Way, Watford WD24 4PP. T: +44 (0)1923 441717 F: +44 (0)1923 446900 www.martindale-electric.co.uk sales@martindale-electric.co.uk Ver.

This manual is also suitable for:

Mtl20

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