E DIN EN IEC 60947-9-2 VDE 0660-121:2021-03

Low-voltage switchgear and controlgear – Active arc-fault mitigation systems

Part 9-2: Optical-based internal arc-detection and mitigation devices

(IEC 121A/338/CDV:2020); German and English version prEN IEC 60947-9-2:2020
Class/Status: Draft, valid
Released: 2021 -03 Published: 2021-02 -05
VDE Art. No.: 1600339
End of objection deadline: 2021-04-05

This document covers internal arc-fault control devices, hereinafter referred to as IACD, which are intended to:
- detect internal arc-faults in low-voltage switchgear and controlgear assemblies, by processing (at least) optical effect of an internal arc-fault, and
- operate mitigation device (either external or combined)
in order to minimize the effects of the internal arc-fault (see Figure 1).

This Document is related to the following Topics (in bold):

29	ELECTRICAL ENGINEERING
29.020	Electrical engineering in general
29.030	Magnetic materials
29.035	Insulating materials
29.040	Insulating fluids
29.050	Superconductivity and conducting materials
29.060	Electrical wires and cables
29.080	Insulation
29.100	Components for electrical equipment
29.120	Electrical accessories
29.130	Switchgear and controlgear
29.140	Lamps and related equipment
29.160	Rotating machinery
29.180	Transformers. Reactors
29.200	Rectifiers. Converters. Stabilized power supply
29.220	Galvanic cells and batteries
29.240	Power transmission and distribution networks
29.260	Electrical equipment for working in special conditions
29.280	Electric traction equipment

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E DIN EN IEC 60947-9-2 VDE 0660-121:2021-03

Low-voltage switchgear and controlgear – Active arc-fault mitigation systems

Part 9-2: Optical-based internal arc-detection and mitigation devices

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