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.

Set Descending Direction

14 Items

per page
  1. Martindale PD440S 440V AC Proving Unit
    NEW
    Martindale PD440S 440V AC Proving Unit
    £114.00 £95.00
    In Stock

  2. Martindale PD690S 690V AC Proving Unit
    NEW
    Martindale PD690S 690V AC Proving Unit
    £118.80 £99.00
    In Stock

  3. Martindale PD430 - Proving Unit (50V AC / 440V AC)
    Special Price £94.80 £79.00 Regular Price £134.40
    In Stock

  4. Martindale PD440 - Proving Unit (440V AC)
    Special Price £97.20 £81.00 Regular Price £109.20
    In Stock

  5. Martindale PD690 - Proving Unit (700V AC)
    Special Price £105.60 £88.00 Regular Price £118.80
    In Stock

  6. Martindale PD700 - Proving Unit (50V AC / 700V AC)
    Special Price £105.60 £88.00 Regular Price £141.60
    In Stock

  7. Martindale PD710 - Proving Unit (700V DC)
    £146.40 £122.00
    In Stock

  8. Martindale PD240 - Proving Unit (240V DC)
    Special Price £69.60 £58.00 Regular Price £82.80
    In Stock

  9. Megger MPU690 - Proving Unit (690V AC)
    £139.20 £116.00
    Limited stock

  10. Fluke PRV240 - Proving Unit (240V AC/DC)
    £142.80 £119.00
    In stock

  11. Martindale TC70 VTPD - Soft Carry Case
    £31.20 £26.00
    In stock

Set Descending Direction

14 Items

per page