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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10 Items

per page
  1. Martindale PD440SX 50V/120V/230V/440V AC Proving Unit with CALCHECK
    Special Price £115.20 £96.00 Regular Price £162.00
    Limited stock

  2. Fluke PRV240 - Proving Unit (240V AC/DC)
    £189.60 £158.00
    Usually 1-3 weeks

  3. Megger MPU690 - Proving Unit (690V AC)
    £162.00 £135.00
    Limited stock

  4. Martindale PD690SX 50V/120V/230V/400V/690V AC Proving Unit with CALCHECK
    Special Price £116.40 £97.00 Regular Price £166.80
    Usually 1-3 weeks

  5. Martindale PD690S - 690V AC Proving Unit
    Special Price £100.80 £84.00 Regular Price £147.60
    Usually 1-3 weeks

  6. Kewtech KEWPROVE3 - 690V AC/DC Proving Unit
    NEW
    Kewtech KEWPROVE3 - 690V AC/DC Proving Unit
    £150.00 £125.00
    Usually 1-3 weeks

  7. Martindale PD710 - Proving Unit (700V DC)
    Special Price £117.60 £98.00 Regular Price £154.80
    Usually 1-3 weeks

  8. Martindale PD440S 440V AC Proving Unit
    Special Price £95.40 £79.50 Regular Price £139.20
    Limited stock

  9. Martindale PD240 - 240V DC Proving Unit
    Special Price £72.00 £60.00 Regular Price £99.60
    Limited stock

Set Descending Direction

10 Items

per page