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Martindale VT25/PD Voltage Tester & PD690 Unit Kit & Carry Case

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£166.26 £138.55
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VT25 Voltage Indication

Martindale VT25 is a twin pole voltage indicator used to determine the presence of a voltage, with a 12-690V AC/DC testing range; the model is also capable of audible and optical continuity, phase rotation and a single pole phase test.

The voltage tester has an inbuilt torch for darker conditions and its durable ergonomic design makes it a great tool for any Part P electrician or industrial application.

Key Features

  • Built-in Torch
  • LED and Audible Indicator
  • Three phase rotation indication
  • EN61243-3, IEC 61010 and CAT III 690V rated
  • Resistance Levels up to 500Kω
  • Auto Power Off

PD690 Proving Device

Voltage Indicators should always be tested with a proving unit before and after use, the PD690 proving unit produces 700V AC/DC.

The device is portable and battery powered making it portable and easy to take with you on the job, it can also be powered via a 12V supply.

Key Features

  • 700V AC/DC
  • Battery and Mains Powered
  • LED Indicator
  • Low Battery Indicator

What’s Included?

  • VT25 Voltage Tester
  • PD690 Proving Device
  • Soft Carrying Case
  • Batteries
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Part CodeMARVT25/PD

Martindale VT25PD Voltage Indicator & Proving Device Technical Specifications

Martindale VT25/PD

Voltage Indicator            

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

Polarity Indication                                 

From 12V DC/AC rms

Range Detection             


Response Time

<1s at 1005 of each nominal voltage

Frequency Range            

DC, 16 to 400Hz

Test Current      

<3.5mA at 690V

Duty Ratio          

30s ON (operated) / 240s OFF (recovery)

Single Pole Phase Test 

Voltage Range  

100 to 690V AC RMS

Frequency Range            

50 to 60Hz

Phase Rotation Test      

Voltage Range   

120 to 400V AC RMS (Phase to Earth)

Frequency Range            

50 to 60Hz



Resistance Range            

0 to 500kΩ + 50%

Overvoltage Protection

690V DC or AC rms


Operating Temperature               

-10°C to 55°C

Storage Temperature   

-20°C to 70°C, non-condensing


Max 85% R.H.


Up to 2000m



2 x 1.5V, AAA alkaline batteries


205(L) x 67(W) x 27(D) mm


BS EN61243-3:2010 CAT IV 300V, CAT
III 600V / EMC BS EN61326-1


II, Double Insulation

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