Terms beginning with O referencing BS 7671
Standard or regulation
BS 7671
BS 7671 is the UK national standard for electrical installations, covering the design, erection, inspection, testing and verification of low-voltage electrical systems. Section 722 contains specific requirements for supplies to electric vehicles.
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.