Page 51 - Surge-Protection-E_0.pdf

N-PE Lightning Current Arresters
WBF
DEHN-FUNKENSTRECKEN-TECHNOLOGIE INSIDE
WELLENBRECHER-FUNKTION
DEHNgap
• Discharge capacity up to 100 kA (10/350 µs)
• Total current arrester specifically designed for installation
in 3+1 and 1+1 configurations of TT systems according to
IEC 60364-5-53 between neutral conductor N and protective
conductor PE
• Creepage discharge spark gap technology
• Operating state / fault indication by green / red indicator flag
in the inspection window

For protecting low-voltage consumer’s installations against surges and even direct
lightning strikes. For installation in conformity with the lightning protection zone
concept at the boundaries from 0A – 1 (3+1 configuration).

DEHNgap M 255 (FM): Coordinated and modular single-pole N-PE lightning current arrester
DEHNgap Maxi 1 255 S: Coordinated single-pole N-PE lightning current arrester for busbars
DEHNgap Maxi 1 255 (FM): Coordinated single-pole N-PE lightning current arrester for 3+1 configurations with DEHNvenCI
DEHNgap Maxi 440 (FM): Coordinated single-pole N-PE lightning current arrester for UC = 440 V a.c.
DEHNgap H M 255: Modular single-pole N-PE lightning current arrester

As total current arresters between the neutral and protective conductor With its functional Red/Line design, DEHNgap M combines safety and
in TT systems, the single-pole N-PE lightning current arresters of type ease of use in a single device. The mechanical operating state / fault indi-
DEHNgap M, DEHNgap Maxi, DEHNgap Maxi S and DEHNgap H M have cation as well as the unique module locking system stand for fulfilling
the task of fulfilling the requirements for protecting personnel and equip- high safety requirements. The module locking system fixes the protection
ment in 1+1 or 3+1 configurations. The creepage discharge spark gaps modules to the base part. Neither vibration during transport nor the enor-
implemented were specifically developed to meet this challenge. With a mous forces of discharge can loosen the protection modules. Nevertheless,
discharge capacity up to 100 kA (10/350 µs), they fulfil the highest nation- they can be easily replaced without tools by simply pressing the module
al and international lightning protection standards. Their leakage-cur- release button of the protection module. Each protection module is me-
rent-free spark gap design allows the devices to be used in areas up- chanically coded to avoid installing an incorrect module. Apart from the
stream of the meter panel according to the German VDN guideline. standard visual indication of DEHNgap M, DEHNgap M ... FM features a N-PE Lightning Current Arresters
The DEHNgap M, DEHNgap Maxi S and DEHNgap Maxi coordinated N-PE three-pole remote signalling terminal. As the remote signalling contact is
lightning current arresters have a special status among total current ar- designed as a floating changeover contact, the remote signal can, depend-
resters. Due to their low voltage protection level, they can be directly co- ing on the circuit concept, be used as a make or break contact.
ordinated with N-PE surge arresters of the DEHNguard M family and
DEHNgap C S surge arresters without an additional decoupling coil. If
lightning current arresters are to be installed along with surge arresters
at the same location, no additional DEHNgap C S is required thanks to the
low voltage protection level of DEHNgap M and DEHNgap Maxi.
The design and installation of DEHNgap Maxi S arresters are adapted to
the unique nature of low-voltage switchgear installations and entirely
complement the use of DEHNbloc Maxi S arresters.
The multifunctional terminals of the DIN rail mounted DEHNgap M and
DEHNgap H M devices are suitable for connecting conductors and bus-
bars, allowing convenient wiring with other DIN rail mounted terminals.

Valid as of August 1, 2020 You will find detailed product information on our website 47