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DEHNsecure:

Lightning current arrester

for d.c. applications

Featuring a functional design, the modular devices lightning protection zone concept including the cross-
of the DEHNsecure product family are coordinated boundary d.c. cables. Furthermore, the leakage-current-
lightning current arresters with a discharge capacity free version of the spark-gap-based arrester offers
of 25 kA (10/350 µs). They are energy-coordinated decisive advantages when used in insulation monitored
with type 2 surge arresters of the DEHNguard systems or in applications where there are extreme
®
family without additional cable lengths. DEHNsecure requirements on the self-energy consumption.
devices are powerful and user-friendly. Their
electrical parameters are rated for the most stringent DEHNsecure’s operating-current-free status/fault
requirements in a lightning and surge protection indicator immediately provides information on the
system. operating state of the device. Apart from the standard
visual indication with red and green indicator flags,
The DEHNsecure spark gap is perfectly suited for use in d.c. DEHNsecure ... FM devices feature an additional remote
circuits. The device concept prevents mains follow currents signalling output. With the floating changeover contact,
up to 2000 A d.c. at the early stages of development. the remote signal can be used as a break or make contact
This new arrester series allows to implement a consistent according to the particular circuit concept.

Benefits of the DEHNsecure product family

• Coordinated spark-gap-based lightning current arrester
• Spark gap for use in d.c. circuits
• Arrester consisting of a base part and plug-in protection module
• Discharge capacity up to 25 kA (10/350 µs)
• Coordinated with DEHNguard surge protective devices
• Low voltage protection level
• Operating current-free state-and-fault indication in the inspection window
• Easy replacement of protection modules without tools

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