Terms beginning with O in Electrical Protection category
O
Open combined Protective and Neutral conductor Detection Device (OPDD)
An Open combined Protective and Neutral conductor Detection Device (OPDD) is a device or integrated EV charging function designed to detect conditions associated with an open PEN conductor fault and disconnect, or initiate disconnection of, the affected circuit or equipment. IET 01:2024 sets definitions, requirements and tests for OPDD behaviour.
Open PEN Detection
Open PEN detection identifies conditions that may indicate a broken or disconnected combined protective and neutral conductor. It is normally assessed during product selection, circuit design, installation verification and maintenance of EV charging equipment.
Overcurrent Protection
Overcurrent protection protects conductors and equipment against excessive current caused by overloads or short circuits. It is normally assessed during product selection, circuit design, installation verification and maintenance of EV charging equipment.
Overcurrent Protection Rating
Overcurrent protection rating is the current value assigned to a protective device, normally stated in amps. It is normally assessed during product selection, circuit design, installation verification and maintenance of EV charging equipment.