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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 

indication LED’s fail to illuminate correctly during proving.

The voltage indicator will not detect DC voltage.

damage the voltage indicator and expose the operator to a shock hazard. Always check 

used on CAT IV installations up to 300V to earth, on CAT III installations up to 600V to 

Do not use

probe tip.

Do not use the voltage indicator during rain or precipitation.

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.

To avoid corrosion from a leaking battery, remove the battery when the unit is not in use 
for an extended period.

3. OPERATION
3.1 Self Test

The self test checks the functionality and battery, a proving check should always be 
performed prior to use.

Press the test button on the voltage indicator.

Two LED’s, one in the front cone and one above the test switch, should illuminate and 
the buzzer should sound. 

Do not use the voltage indicator if either of the LED’s fails to illuminate or the buzzer fails 
to sound.

If both LED’s and the buzzer do not function, replace the battery (see section 4.1 Battery 
Replacement) and retest the unit.

3.2 Proving Check

Before and after use, verify the voltage indicator is functioning correctly on a known 
good voltage source.

Do not use the voltage indicator if either of the LED’s fails to illuminate or the buzzer fails 
to sound during proving.

Warning

indicator may be damaged and the operator exposed to a shock hazard. Always check 
the voltage magnitude of the voltage source before proceeding with a proving check.

3.3 Testing for the Presence of Voltage

Warning

Single pole phase testing is not suitable to determine if a circuit is 

not 

hazardous live. A 

double pole voltage test should always be used for that purpose.

If testing at locations with high background noise levels, always determine whether the 
buzzer is perceptible before relying solely on the buzzer indication.

optimum and consistent sensitivity. A loose grip during testing may reduce the voltage 
indicator’s sensitivity.

Summary of Contents for VT7

Page 1: ...Directives End of life disposal of this equipment should be in accordance with relevant EU Directives Caution risk of electric shock Caution risk of danger refer to instructions Equipment protected by double or reinforced insulation Class II Alternating current AC 1 INTRODUCTION 1 1 Inspection Examine the shipping carton for any sign of damage Inspect the unit and any accessories for damage If the...

Page 2: ...r Two LED s one in the front cone and one above the test switch should illuminate and the buzzer should sound Do not use the voltage indicator if either of the LED s fails to illuminate or the buzzer fails to sound If both LED s and the buzzer do not function replace the battery see section 4 1 Battery Replacement and retest the unit 3 2 Proving Check Before and after use verify the voltage indica...

Page 3: ...by the end user This warranty extends only to the original buyer or end user customer and does not apply to fuses disposable batteries test leads or to any product which in Martindale s opinion has been misused altered neglected contaminated or damaged by accident or abnormal conditions of operation handling or storage Martindale authorised resellers shall extend this warranty on new and unused pr...

Page 4: ... C Humidity Operating Storage 85 R H Altitude up to 2000m General Power 9V PP3 alkaline battery IEC 6LR61 NEDA 1604A Current consumption 34mA max Dimensions 236 L x 44 W x 33 D mm Weight 120g battery included approx Includes 9V PP3 battery instructions Safety Conforms to BS EN61010 1 CAT IV 300V CAT III 600V Class II Double Insulation Pollution Degree 2 IP rating IP54 Water resistant EMC Conforms ...

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