A proving unit is essential for proving circuits are dead before commencing work. The high output will drive low impedance testers such as traditional test lamps as well as modern two pole testers. It even steps down through the voltage stages to prove each stage as well.

The compact PU690 proving unit from Di-LOG is a compact and lightweight
proving unit for checking functionality of 2 pole voltage indicators in the field
where a know source is limited or unreliable.

The PU690 is designed with an ultra bright LED high voltage output and low
battery indicator clearly alerting the user during operation.

Award winning safe isolation kit complete with the KT1780, proving unit and lock off device.

The importance of safe isolation can never be understated.
Essential and enshrined in law to look after the safety of all personnel, it is vital to have the best procedures and equipment for the job.

The KTWISO2 includes a dedicated two pole voltage tester, high output proving unit in accordance with correct procedure, and a locking off device with warning labels. The kit also comes in a carry case that allows access to the proving unit without the need to remove it.