DE Type 1 N-PE Surge Arrester
Surge protection devices for low voltage power equipment
The DE is a Type 1 AC Surge Protection Device (SPD) dedicated to be connected at the entrance of the electrical installation. Particularly useful in a high lightning density area, this SPD is designed to provide protection for sensitive equipment against over voltage due to lightning effects or industrial interferences. In association with DGU, DGR or DGV surge arresters (see diagram), the DE surge arrester provides common and differential surge protection for AC networks, following the CT2 configuration in IEC 60 364-5-534 standard.
Protection is based on specific high energy gas tube which provides much lower residual voltages and very high discharge current capability on a 10/350 μs or 8/20 μs impulses.
The DE surge arrester is used as primary protection for 1 or 3-phase AC networks which are particularly exposed (Type 1 surge arrester). It is therefore installed on the site’s main low voltage switchboard.
It is exclusively dedicated to be connected between the Neutral (N) and Protective Earth (PE) wires, in association with DGU, DGR or DGV connected between phases and Neutral.
The DE surge arrester is DIN rail compatible.
Connection cables between SPD and the lines to be protected must be identical in cross sectional area to the lines with a maximum of 35mm². The cross-sectional earthing cable from DE SPD must equal half that of the main protection cable of the installation with a minimum of 6 mm² and a maximum of 35 mm². If external lightning protection system is fitted, the minimum cross-sectional area will be 10 mm².
DE association with DGU, DGR or DGV can be easily done by bus bar T1 ref P8480.
|Description||Ref.||Dimensions (m)||Weight (kg)|
|DE 400 Overvoltage arrester||P8318E||0,09 x 0,067|