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.

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. Fluke PRV240 - Proving Unit (240V AC/DC)
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    £178.80 £149.00
    Limited stock

  2. Megger MPU690 - Proving Unit (690V AC)
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    £154.80 £129.00
    In stock

  3. Martindale PD440SX 50V/120V/230V/440V AC Proving Unit with CALCHECK
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    Special Price £115.20 £96.00 Regular Price £147.60
    In stock

  4. Martindale PD690S - 690V AC Proving Unit
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    Special Price £100.80 £84.00 Regular Price £134.40
    Limited stock

  5. Martindale PD690SX 50V/120V/230V/400V/690V AC Proving Unit with CALCHECK
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    Special Price £116.40 £97.00 Regular Price £152.40
    Usually 1-3 weeks

  6. Martindale PD440 - Proving Unit (440V AC)
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    Special Price £97.20 £81.00 Regular Price £109.20
    Usually 1-3 weeks

  7. Fluke PRV240FS - Proving Unit (240V AC/DC) with FieldSense
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    £170.40 £142.00
    Limited stock

  8. Martindale PD710 - Proving Unit (700V DC)
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    Special Price £117.60 £98.00 Regular Price £154.80
    In stock

  9. Martindale PD440S 440V AC Proving Unit
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    Special Price £95.40 £79.50 Regular Price £127.20
    In stock

  10. Martindale PD240 - 240V DC Proving Unit
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    Special Price £72.00 £60.00 Regular Price £90.00
    In stock

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10 Items

per page