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Proving Units

Choose The Right Proving Unit

For voltage indicators that have a maximum 400V test range, you need the Martindale PD430 or PD440. If your voltage indicator has a maximum 690V test range, you will need the Martindale PD690 or PD700.

Always use a proving unit that will check the full range of your voltage indicator to ensure it is working correctly.

If you have a DC specific application, the Martindale PD710 will prove up to 700V DC.

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  1. Megger Voltage Tester and Proving Unit Kit
    Megger Voltage Tester and Proving Unit Kit
    Regular Price £307.20 Special Price £180.71 £150.59
    Usually 5 working days

  2. Kewtech KTP1, Proving Unit
    Kewtech KTP1, Proving Unit
    Regular Price £111.60 Special Price £76.80 £64.00
    In stock

  3. KANE-PU690V, 690V Proving Unit
    KANE-PU690V, 690V Proving Unit
    £154.80 £129.00
    Usually 5 working days

  4. Drummond MTL15PD-S Test Lamp and Proving Device
    Drummond MTL15PD-S Test Lamp and Proving Device
    £267.60 £223.00
    Usually 5 working days

  5. Martindale PD690S-C, 690V AC Proving Unit with Soft Carry Case (fits VI)
    Martindale PD690S-C, 690V AC Proving Unit with Soft Carry Case (fits VI)
    Regular Price £184.80 Special Price £176.48 £147.07
    In stock

  6. Martindale PD690SRD – 690V AC/DC Proving Unit with 5 ranges
    Martindale PD690SRD – 690V AC/DC Proving Unit with 5 ranges
    Regular Price £174.00 Special Price £142.81 £119.01
    In stock

  7. Martindale PD440SRDX – 440V AC/DC Proving Unit with 4 ranges & CALCHECK
    Martindale PD440SRDX – 440V AC/DC Proving Unit with 4 ranges & CALCHECK
    Regular Price £168.00 Special Price £150.01 £125.01
    In stock

  8. Martindale PD440SRD – 440V AC/DC Proving Unit with 4 ranges
    Martindale PD440SRD – 440V AC/DC Proving Unit with 4 ranges
    Regular Price £156.00 Special Price £138.01 £115.01
    In stock

  9. Martindale PD230SRD – 230V AC/DC Proving Unit with 3 ranges
    Martindale PD230SRD – 230V AC/DC Proving Unit with 3 ranges
    Regular Price £130.80 Special Price £100.81 £84.01
    In stock

  10. Kewtech KEWPROVE3, Proving Unit (690V AC/DC)
    Kewtech KEWPROVE3, Proving Unit (690V AC/DC)
    Regular Price £174.00 Special Price £90.00 £75.00
    In stock

  11. Drummond MTL20B Test Lamp with Blue Indication
    Drummond MTL20B Test Lamp with Blue Indication
    £127.20 £106.00
    In stock

  12. PH3
    Seaward PH3 Proving Unit for High Voltage Indicators
    £258.00 £215.00
    In stock

  13. Martindale PD440S, AC Proving Unit (440V)
    Martindale PD440S, AC Proving Unit (440V)
    Regular Price £139.20 Special Price £106.73 £88.94
    In stock

  14. Martindale PD440SX, AC Proving Unit (440V) with CALCHECK
    Martindale PD440SX, AC Proving Unit (440V) with CALCHECK
    Regular Price £162.00 Special Price £123.61 £103.01
    In stock

  15. Martindale PD690S, AC Proving Unit (690V)
    Martindale PD690S, AC Proving Unit (690V)
    Regular Price £147.60 Special Price £77.99 £64.99
    In stock

  16. PD240
    Martindale PD240, DC Proving Unit (240V)
    Regular Price £106.80 Special Price £77.47 £64.56
    In stock

  17. Megger MPU690, Proving Unit (690V AC)
    Megger MPU690, Proving Unit (690V AC)
    Regular Price £168.00 Special Price £105.60 £88.00
    Usually 5 working days

  18. Fluke PRV240 - Proving Unit (240V AC/DC)
    Fluke PRV240 - Proving Unit (240V AC/DC)
    £242.40 £202.00
    In stock

  19. Fluke PRV240FS - Proving Unit (240V AC/DC) with FieldSense
    Fluke PRV240FS - Proving Unit (240V AC/DC) with FieldSense
    £249.60 £208.00
    In stock

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