Skip to content
EV charging glossary

Industry jargon

OPDD

Also called: Open PEN Detection Device An Open PEN Detection Device, or OPDD, detects conditions associated with an open PEN conductor fault and disconnects the EV from the charging equipment. It is used in UK EV charging applications where the selected installation design relies on this type of protection. IET 01:2024 provides the specification for OPDD behaviour in household and similar EV charging applications. The IET states that OPDDs are intended to deal with faults on distribution-network conductors outside the customer's installation. An OPDD should not be treated as a general-purpose answer to every earthing risk. The installation still has to meet the applicable requirements of BS 7671 and the manufacturer's instructions.

Related terms

Open PEN fault

BS 7671 Section 722
Browse the full glossary Interactive periodic table

Get in touch

Ready to talk through your project?

Tell us what you're building and our engineers will help you scope the fastest, lowest-risk route to market. A conversation directly with the people who design the charging modules.

Your enquiry is sent directly to the Versinetic engineering team. We do not share your information with third parties. By submitting this form you agree to our Privacy Policy.