Martindale PD440SRDX – 440V AC/DC Proving Unit with 4 Ranges & CALCHECK

Safe electrical working requires the use of a voltage indicator that has been proven with a suitable proving device before and after use to ensure the instrument is working correctly in accordance with the Electricity at Work Regulations. The PD440SRDX, is an ideal solution, a stepped voltage output up to 440V AC or DC to two pole tester thresholds.

The 440V maximum output from the PD440SRDX ensures that the installation tester cannot be damaged by “over proving”, most multifunction testers have a 500V maximum input voltage specification.

The Martindale PD440SRDX is fast and easy to use, instantly supplying the full test voltage for both high and low-impedance voltage indicators, test lamps, and meters. It comes complete with an over moulded low-profile case with a magnetic hanger.

The PD440SRDX has a unique CALCHECK feature making it easy to verify the insulation and low resistance ranges on 18th Edition multifunction testers, wherever you are working.

Key Features

• Suitable for use with voltage indicators up to 440V
• Switchable DC output mode via push button
• CALCHECK for verification of resistance ranges on 18th Edition testers
• Stepped voltage output matched to two-pole tester thresholds
• Compatible with S-series magnetic hanger
• Ideal for proving indicators and measurement devices up to 440V AC or DC and to check the operation of 18th Edition Installation Testers

What's Included?

• Proving Unit
• Magnetic hanger
• Low-profile case
• Batteries