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Summary of Contents for Martindale Electric VT12
- Page 1 VT12 VOLTAGE TESTER Instruction Manual...
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Page 2: Table Of Contents
Precautions Safety Advice Introduction Inspection Description Accessories Battery Installation Operation Description of VT12 Elements and LED Indicators Low Battery Check Operating Duty Ratio Proving Check Removable Probe Tip Covers Testing for the Presence of Hazardous Live Voltage Interference (Phantom) Voltage... -
Page 3: Safety Information
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. -
Page 4: Precautions
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 the extra low voltage (ELV) limit of 50V AC RMS or 120V DC. -
Page 5: Safety Advice
If the probe tip shrouds are not fitted, great care must be taken when testing CAT III and CAT IV installations to avoid the risk of shorting high energy circuits and arc flash. Do not use the voltage tester in damp conditions. -
Page 6: Introduction
If there is any damage then consult your distributor immediately. 2.2 Description The VT12 is a voltage tester used for proving circuits are dead i.e. not hazardous live. It is constructed in accordance with the latest safety standards. -
Page 7: Operation
3. OPERATION 3.1 Description of VT12 Elements and LED Indicators Probe tip protection Positive probe Voltage threshold indicators Polarity indicators Buzzer Phase indicator ELV indicator Continuity RX indicator Battery compartment cover Polarity indicators When connected to a DC voltage source either the + or –... -
Page 8: Low Battery Check
When connected to an AC voltage source both the + and – LED’s will illuminate. The polarity LED’s will illuminate when the voltage source is ≥ 12V AC rms or DC. Voltage threshold indicators The voltage threshold LED’s will illuminate when the magnitude of the voltage source is at a value approaching or greater than the corresponding marked voltage. -
Page 9: Proving Check
The LED’s that illuminate during proving will depend on the magnitude of the proving unit output or the voltage source. See table 1. Also check the buzzer sounds during proving. Table 1. Proving unit type Voltage VT12 source PD430 PD690 LED’s PD710 230V 50Hz... -
Page 10: Removable Probe Tip Covers
Warning If the proving device or voltage source exceeds the specified limits of the voltage tester the voltage tester may be damaged and the operator exposed to a shock hazard. Always check the specification of the proving device or the voltage magnitude of the voltage source before proceeding with a proving check. -
Page 11: Interference (Phantom) Voltage
The buzzer will also sound if voltage is present. Note: The individual LED indications, including the ELV LED, are not to be used for measuring purposes. 3.7 Interference (Phantom) Voltage It is possible for wiring that is ‘dead’ to indicate the apparent presence of voltage at power frequency. -
Page 12: Maintenance
Martindale Electric recommends that it is returned at least once a year to verify physical integrity, electrical specification and insulation integrity. Martindale Electric is pleased to offer you this service. Please contact our Service Department for details. Email: service@martindale-electric.co.uk Tel: +44 (0)1923 650660 4.3 Cleaning... -
Page 13: Warranty
harsh sunlight, extremes of temperature 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. 5. WARRANTY AND LIMITATION OF LIABILITY This Martindale product is warranted to be free from defects in material and workmanship... -
Page 14: Specifications
Specification VT12 Voltage Tester ELECTRICAL Voltage Detector Maximum working voltage: 690V DC & AC rms Nominal voltage threshold indications: 12, 24, 50, 120, 230, 400, 690V AC/DC Nominal voltage threshold tolerance: Conforms to BS EN 61243-3:2014 Internal impedance at ELV a.c.: 260kΩ... - Page 15 Continuity Resistance range: 0 to 500kΩ Test current: 3µA Overvoltage protection: 690V DC or AC rms ENVIRONMENTAL Temperature (Operating & Storage): -10°C to 55°C Humidity (Operating & Storage): ≤ 85% R.H Altitude: up to 2000m Pollution degree: 2 GENERAL Power: 2 x 1.5V, AAA alkaline batteries (IEC LR03, NEDA 24A) Battery consumption: 30mA max Dimensions packed: 250 x 75 x 40 mm...
- Page 16 • Voltage Indicators • Specialist Metrohm Tester • Specialist Drummond Testers Martindale Electric Co. Ltd. Metrohm House, 12 Imperial Park, Imperial Way, Watford WD24 4PP, UK. T: +44 (0)1923 441717 F: +44 (0)1923 446900 www.martindale-electric.co.uk sales@martindale-electric.co.uk Ver. D1.0 © Martindale Electric Company Ltd. 2023...