Di-LOG PU690 690V Proving Unit for Voltage Testers
What is the Di-LOG PU690 690V AC Proving Unit?
The Di-LOG PU690 690V AC Proving Unit is an essential safety device for UK electricians and technicians who need to correctly prove the operation of two-pole voltage indicators before and after testing live circuits. It provides a known 690V AC output, allowing testers to be verified even when a reliable live source is not available.
Compact and lightweight, the PU690 supports safe isolation procedures in accordance with the Electricity at Work Regulations 1989, helping ensure voltage testers are functioning correctly before use. It is suitable for proving both high and low impedance instruments, including voltage indicators, multimeters and clamp meters.
Why is a proving unit essential for safe isolation?
A proving unit removes uncertainty by supplying a controlled voltage source. The PU690 limits output current to less than 3.5 mA, providing a safe yet effective method of confirming tester operation without accessing live equipment.
Order today to enjoy free delivery, expert support and our 90-day satisfaction guarantee. Need advice? Our team is here to assist you.
Why choose Instrotech for your electrical test equipment?
With over 40 years’ experience supporting UK electricians, technicians and engineers, Instrotech is your trusted partner for quality tools and expert service. When you purchase from us, you benefit from:
Free UK shipping on orders over £99
Access to our knowledgeable technical support team
Available calibration services to maintain safety compliance
A 90-day money-back guarantee for complete peace of mind
We’re committed to helping you work safely and efficiently with industry-leading products and ongoing support.
