DEHNshield® ZP
Multipole combined arrester for primary power supply systems
- Type 1 + type 2 combined lightning current and surge arrester with spark gap technology
- Energy-coordinated protection effect with regard to the terminal equipment (≤ 10 m) type 1 + type 2 + type 3
- Fully compliant with all requirements of the national VDN* guideline on the use of SPDs upstream of the meter panel
- Quick and easy installation by snapping the arrester onto 40 mm busbar systems
- Protects the entire electrical installation already near the infeed point
- Operating state / fault indication by green / red indicator flag in the inspection window
- No tripping of 32 A gG fuses up to short-circuit currents of 25 kArms
- Fulfils the requirements on the lightning current discharge capacity according to IEC 60364-5-53**
- Compact lightning equipotential bonding including protection of terminal equipment
Versions
DEHNshield ZP Basic TT 255: Four-pole combined arrester for TT and TN-S systems for use in the primary power system of residential buildings without external lightning protection system (also with infeed via overhead lines)
DEHNshield ZP TNC 255: Three-pole combined arrester for TN-C systems for use in the primary power system of buildings with external lightning protection system (class of LPS III/IV)
DEHNshield ZP Basic TNC 255: Three-pole combined arrester for TN-C systems for use in the primary power system of residential buildings without external lightning protection system (also with infeed via overhead lines)
Details
The operating state of the arresters is indicated by an operating state / fault indication by green / red indicator flag in the inspection window of the device. Both due to this kind of operating state indication and their design as spark-gap-based arresters, DEHNshield ZP and DEHNshield ZP Basic arresters have no leakage and operating currents.
The proven DEHNshield spark gap technology ensures that fuses are not tripped by follow currents even in case of low-current-rated fuses in the service entrance box. Undesired interruptions due to tripped main fuses are thus avoided.
The device parameters and design are fully compliant with all requirements of the German VDN guideline* on the use of surge protective devices in primary power systems.
* VDN ... Verband der Netzbetreiber VDN e. V. beim BDEW (Association of German Network Operators VDN at the BDEW in Germany)
** Applies to DEHNshield ZP