Page 47 - Surge-Protection-E_0.pdf

Coordinated Lightning Current Arresters – Type 1 for d.c. Applications
WBF
DEHN-FUNKENSTRECKEN-TECHNOLOGIE INSIDE
WELLENBRECHER-FUNKTION
DEHNsecure modular
• Coordinated spark-gap-based lightning current arrester
consisting of a base part and a plug-in protection module
• Spark gap technology particularly suited for use in d.c. circuits
• High lightning current discharge capacity of 25 kA (10/350 µs)
• Directly coordinated with DEHNguard SE DC ... surge
protective devices
• Low voltage protection level
• Operating state / fault indication by green / red indicator flag
in the inspection window
• Easy replacement of protection modules due to module
locking system with module release button

For protecting d.c. consumer installations against surges and even direct lightning
strikes. For installation in conformity with the lightning protection zone concept at
the boundaries from 0A – 1.

DEHNsecure M 1 ...: Coordinated and modular single-pole lightning current arrester for d.c. applications
DEHNsecure M 1 ... FM: With remote signalling contact for monitoring device (floating changeover contact)
DEHNsecure M 2P ...: Coordinated and modular two-pole lightning current arrester for d.c. applications
DEHNsecure M 2P ... FM: With remote signalling contact for monitoring device (floating changeover contact) Lightning Current Arresters – Type 1

The modular devices of the DEHNsecure product family are coordinated DEHNsecure M 1 242 (FM) is used for safety lighting systems. The rele-
lightning current arresters with a functional design. vant consumers are supplied with a.c. voltage during normal operation
They can be energy-coordinated with type 2 surge arresters of the and with battery-operated d.c. voltage during emergency operation. As
DEHNguard SE DC family. surges may occur during both operating states, DEHNsecure M 1 242 is
The DEHNsecure arresters combine high performance and ease of use in suited for direct and alternating currents (backup fuse max. 10 A gG).
a single device. Their electrical parameters are rated for the most stringent The modular design of the DEHNsecure arresters makes them safe and
requirements in lightning and surge protection systems. user-friendly. Their vibration-proof module locking system, for example,
The internal structure of the DEHNsecure spark gap is suited for use in d.c. is said to be unique. Shock or vibration during transport or operation or
enormous mechanical impulse loads resulting from discharges do not
circuits. The device concept prevents mains follow currents up to 25,000 affect the module locking system which ensures safe fixation both for the
A d.c. from occurring. base part and protection module. Nevertheless, the protection modules
With this new arrester series, a consistent lightning protection zone con- can be easily replaced without tools by simply pressing the easy-to-use
cept including the cross-boundary d.c. lines can now be implemented. module release button. The mechanically coded base part and protection
Furthermore, the leakage-current-free version of the spark-gap-based ar- module avoid installing an incorrect module. DEHNsecure arresters
rester offers numerous advantages when used in insulation monitored incorporate double terminals, allowing series connection of the arresters
systems or in applications where the highest demands are placed on in a space-saving and cost-effective way according to IEC 60364-5-53
self-energy consumption. requirements for nominal currents up to 125 A.
DEHNsecure arresters are used, for example, in safety lighting systems, The operating state / fault indicator of DEHNsecure does not cause oper-
emergency power supplies, d.c. systems for direct supply of d.c. drives, ating currents and instantly shows the operating state of the device.
control circuits and any kind of battery-operated power supply. Apart from the standard visual indicator with red and green indicator
DEHNsecure M 1 60 (FM) and DEHNsecure M 2P 60 (FM) are specifi- flags, DEHNsecure ... FM devices have an additional remote signalling
cally developed for Remote Radio Head (RRH) applications. Designed for output. As the remote signalling contact is designed as a floating
possible high load currents, they leave sufficient spare capacity for future changeover contact, the remote signal can, depending on the circuit
extensions in the field of mobile communication. concept, be used as a make or break contact.

DEHNsecure M 1 ... 971 121 971 120 971 122 DSE M 1 60 DSE M 1 220
DSE M 1 242
Coordinated and modular single-pole lightning current arrester for d.c. applications.
971 121 4013364138582 04 01 01 12 284 g
255,90 €
971 120 4013364133631 04 01 01 12 252 g
285,80 €
971 122 4013364144477 04 01 01 12 258 g
315,60 €
Type DSE M ... 1 60 1 220 1 242
Part No. 971 121 971 120 971 122
SPD classification according to EN 61643-11 / IEC 61643-11 type 1 / class I type 1 / class I type 1 / class I
Max. continuous operating voltage (d.c.) (UC) 60 V 220 V 242 V
Lightning impulse current (10/350 µs) (Iimp) 25 kA 25 kA 25 kA
Voltage protection level (UP) ≤ 1.5 kV ≤ 2.5 kV ≤ 2.5 kV
Max. mains-side overcurrent protection 250 A gL 250 A gL 250 A gL
Approvals UL — —
Extended technical data: when used in safety lighting systems
– Max. continuous operating voltage (a.c.) (UC) — — 255 V

Valid as of August 1, 2020 You will find detailed product information on our website 43