Draper 400 Series Manual
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Draper 400 Series Manual

Clamp meter
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400 SERIES
CLAMP METER
41967
IMPORTANT: Please read these instructions carefully to ensure the safe and effective use of this product and save
these instructions for future reference. This manual has been compiled by Draper Tools and is an integrated part of the
product with which it is enclosed and should be kept with it for future references.
This manual describes the purpose for which the product has been designed and contains all the necessary information
to ensure its correct and safe use. We recommend that this manual is read before any operation or, before performing
any kind of adjustment to the product and prior to any maintenance tasks. By following all the general safety
instructions contained in this manual, it will ensure both product and operator safety, together with longer life of the
product itself.
AlI photographs and drawings in this manual are supplied by Draper Tools to help illustrate the operation of the product.
Whilst every effort has been made to ensure accuracy of information contained in this manual, the Draper Tools policy
of continuous improvement determines the right to make modifications without prior warning.

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  • Page 1 IMPORTANT: Please read these instructions carefully to ensure the safe and effective use of this product and save these instructions for future reference. This manual has been compiled by Draper Tools and is an integrated part of the product with which it is enclosed and should be kept with it for future references.

  • Page 2: Title Page

    Commercial copying, redistribution, hiring or lending is prohibited. No part of this publication may be stored in a retrieval system or transmitted in any other form or means without written permission from Draper Tools Limited. In all cases this copyright notice must remain intact.

  • Page 3: Table Of Contents

    2. CONTENTS 2.1 CONTENTS ................Page content Page TITLE PAGE INTRODUCTION ......................2 REVISION HISTORY ....................2 UNDERSTANDING THIS MANUAL ................2 COPYRIGHT NOTICE ....................2 CONTENTS CONTENTS.........................3 GUARANTEE GUARANTEE ......................4 INTRODUCTION GENERAL SPECIFICATIONS ..................5 TECHNICAL SPECIFICATIONS ................5-9 HEALTH & SAFETY INFORMATION SAFETY PRECAUTIONS ..................10 IDENTIFICATION LCD ...........................12 UNPACKING &...

  • Page 4: Guarantee

    3. GUARANTEE 3.1 GUARANTEE Draper tools have been carefully tested and inspected before shipment and are guaranteed to be free from defective materials and workmanship. Should the tool develop a fault, please return the complete tool to your nearest distributor or contact Draper Tools Limited, Chandler's Ford, Eastleigh, Hampshire, SO53 1YF.

  • Page 5: Introduction

    4. INTRODUCTION The Meter shall be designated for one year and recalibrated at 18°C to 28°C and a relative humidity of less than 75%. 4.1 GENERAL SPECIFICATIONS Auto-ranging/Manual ranging. Full-scale overload protection The maximum allowable voltage between the measuring end and the earth: 1000V DC or 750V AC Display: LCD Maximum display value: 5999 digits...
  • Page 6 4. INTRODUCTION AC Current Range Accuracy Resolution ±(2.5% rdg + 8 digits) 0.01A 600A 0.1A Max. input current: 600A AC. Frequency range: 50Hz. DC Current Range Accuracy Resolution ±(2.0% rdg + 8 digits) 0.01A 600A 0.1A Max. input current: 600A AC. INRUSH Current Range Accuracy...
  • Page 7 4. INTRODUCTION AC Voltage Range Accuracy Resolution ±(1.0% rdg + 5 digits) 0.001V 0.01V 600V ±(1.2% rdg + 5 digits) 0.1V Input impedance: 10MΩ. Max. input voltage: 600V AC (RMS) or 600V DC. Frequency range: 40 ~ 1000Hz. Note: In the low voltage range, with the test leads is not connected to the circuit under test, the Meter may have a fluctuating reading, this is normal, this it is caused by high sensitivity of the Meter, it does not affect the actual measurement results.
  • Page 8 4. INTRODUCTION Duty cycle Range Accuracy Resolution   0.1 – 99.9% ±(3.0% rdg + 3 digits) 0.1% BY A range (Clamp Jaws): Frequency response ： 10 ~ 1 kHz Input current range ： ≥20A AC (RMS) Max. input current ： AC 1000A By V range: Frequency response ：...
  • Page 9 4. INTRODUCTION Capacitance Range Accuracy Resolution 9.999nF 0.001nF 99.99nF ±(3.0% rdg + 5 digits) 0.01nF 999.9nF 0.1nF 9.999μF 0.001μF 99.99μF 0.01μF 999.9μF 0.1μF 9.999mF ±(5.0% rdg + 5 digits) 0.001mF 99.99mF Not calibrated 0.01mF Overload protection ： 250V DC or AC （RMS) Diode Test Range Resolution...

  • Page 10: Health & Safety Information

    5. HEALTH & SAFETY INFORMATION Warning To avoid electrical shock or personal injury. Please read the safety information and “warnings and precautions” before use. This is an AC-DC current digital clamp meter (hereinafter referred to as the clamp meter). The whole circuit design is based on LSI A / D converter with full-scale overload protection circuit and frequency measurement function.
  • Page 11 6. IDENTIFICATION Measurement clamp head. “SEL” function Button. Inspection light. Function buttons. Protection Guard: Protects the user's Display. hand from touching the danger zone. Probe sockets. Clamp trigger. Current direction marking. Measuring function selection dial.

  • Page 12: Identification

    6. IDENTIFICATION 6.1 LCD (Liquid-crystal display) - FIG. 1 FIG.1 Inrush Current Measurement. Degrees Celsius, Degrees Fahrenheit. Direct Current. Auto range indicator. Alternating Current. Relative mode. Diode Check. Negative polarity indicator. Continuity checking indicator. Data hold indicator. PEAK HOLD measuring status. Automatic shutdown indicator.

  • Page 13: Unpacking & Checking

    Carefully remove the product from the packaging and examine it for any sign of damage caused during shipping. Lay the contents out and check them. If any part is damaged or missing, do not attempt to use the tool and contact the Draper Helpline immediately (see back page for details).

  • Page 14: Operation Instructions

    8. OPERATING INSTRUCTIONS 8.1 DATA HOLD During the measurement, press the ‘HOLD’ function button, the data will be held on the display and a ‘H’ symbol will appear. Press the ‘HOLD’ function button to return to normal measurement mode. 8.2 SWITCHING FREQUENCY OR DUTY 1. ...

  • Page 15: Backlight And Clamp Head Lighting

    8. OPERATING INSTRUCTIONS 8.6 BACKLIGHT AND CLAMP HEAD LIGHTING 1. Press the “ ” function button for approx. 2 seconds to turn on and off the backlight. Note: The light will turn off automatically after 60 seconds. Note: The inspection light will only come on while in AC/DC current function. 8.7 AUTOMATIC SHUTDOWN FUNCTION If the meter is not used for approx.

  • Page 16: Ac Voltage Measurement

    8. OPERATING INSTRUCTIONS 8.11 AC VOLTAGE MEASUREMENT Warning Risk of electric shock. When measuring high voltage, extra care should be taken to avoid electrical shock. Do not attempt to use this meter on a voltage higher than the AC600V rms value. 1.

  • Page 17: Voltage Measurement

    8. OPERATING INSTRUCTIONS 8.14 VOLTAGE MEASUREMENT (THROUGH THE AC VOLTAGE RANGE) Warning Risk of electric shock When measuring high voltage, extra care should be taken to avoid electrical shock. Do not attempt to use this meter on a voltage higher than the AC600V rms value. 1.

  • Page 18: Duty Cycle Measurement

    8. OPERATING INSTRUCTIONS 8.16 DUTY CYCLE MEASUREMENT MEASURED BY AC CURRENT PROFILE DUTY CYCLE (FROM THE CLAMP HEAD) Warning Risk of electric shock. Remove the test leads from the meter when measuring with the clamp head. 1. Rotate the measurement function selection dial to the current measurement. 2.

  • Page 19: Measure The Duty Cycle In Hz/Duty

    8. OPERATING INSTRUCTIONS 8.18 MEASURE THE DUTY CYCLE IN HZ / DUTY Warning Risk of electric shock. When measuring high voltage, extra care should be taken to avoid electrical shock. Do not attempt to use this meter on a voltage higher than the AC250V rms value 1.

  • Page 20: Diode Test

    8. OPERATING INSTRUCTIONS 8.20 DIODE TEST Warning Risk of electric shock. When measuring diodes on a line, make sure that the circuit power is off and the capacitors on the circuit are fully discharged. 1. Rotate the measuring function selection dial to the Diode position and ensure that the power to the circuit under test is cut off 2.

  • Page 21: Maintenance

    9. MAINTENANCE 9.1 REPLACEMENT BATTERY Warning To avoid false readings that may result in electric shock or personal injury, replace the battery as soon as the“ ” symbol appears on the meter display. To avoid electrical shock or personal injury, shut down and check to make sure that the test lead has been disconnected from the measuring circuit before opening the battery cover and replacing it with a new one.

  • Page 22: Explanation Of Symbols

    10. EXPLANATION OF SYMBOLS 10.1 EXPLANATION OF SYMBOLS WEEE Voltage AC. Do not dispose of Waste Electrical & Electronic Equipment in with domestic rubbish. Voltage DC. For indoor use. Do not expose to rain. Current AC. Class II construction (Double insulated). Conforms to all relevant Current DC.

  • Page 23: Disposal

    11. DISPOSAL NOTES 11.1 DISPOSAL - At the end of the machine’s working life, or when it can no longer be repaired, ensure that it is disposed of according to national regulations. - Contact your local authority for details of collection schemes in your area. In all circumstances: •...
  • Page 24 ©Published by Draper Tools Limited. No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, mechanical photocopying, recording or otherwise without prior permission in writing from Draper Tools Ltd.

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Dcm40241967

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