• Incl. VAT Excl. VAT
  • Contact Us
  • Compare ()
  • Sign In
  • Create an Account
Toggle Nav
My Cart 0

Sales: +44 (0) 1923 44 22 44

Service: +44 (0) 1923 650 660

Shop by category
Training Hire Calibration Export
  • Incl. VAT Excl. VAT
  • Contact Us
  • Compare ()
  • Sign In
  • Create an Account
  • Incl. VAT Excl. VAT

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.

Filter
Set Descending Direction

9 Items

per page
  1. 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 £122.30 £101.92
    In stock

  2. 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 £144.80 £120.67
    In stock

  3. 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 £140.00 £116.67
    In stock

  4. 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 £108.72 £90.60
    In stock

  5. 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 £102.80 £85.67
    In stock

  6. Martindale PD440S, AC Proving Unit (440V)
    Martindale PD440S, AC Proving Unit (440V)
    Regular Price £139.20 Special Price £127.50 £106.25
    In stock

  7. Martindale PD440SX, AC Proving Unit (440V) with CALCHECK
    Martindale PD440SX, AC Proving Unit (440V) with CALCHECK
    Regular Price £162.00 Special Price £129.60 £108.00
    In stock

  8. Martindale PD690S, AC Proving Unit (690V)
    Martindale PD690S, AC Proving Unit (690V)
    Regular Price £147.60 Special Price £58.86 £49.05
    In stock

  9. PD240
    Martindale PD240, DC Proving Unit (240V)
    Regular Price £106.80 Special Price £69.82 £58.18
    In stock

Filter
Set Descending Direction

9 Items

per page
Shop By
Now Shopping by
  1. Manufacturer Martindale Remove This Item
Clear All
Shopping Options

Featured