Plastic Mouldings

Mouldings can be checked for defects by the use of high voltage testers.

As an example, battery boxes can be tested for faults by placing the box on a metal plate. By applying a test voltage to an electrode inside the box, the moulding can be checked thoroughly, particularly at the injection points, and any faults found. A battery powered PHD Pinhole Detector can be used to perform the tests manually, but a mains powered DCCT is more suitable if the process is to be automated into a production line. AC Spark Testers can also be used when higher test voltages are required.