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Catalogue 2010/2011
Surge Protection
BITZDUCTOR XTU ML4 (2) BD 0-180
New combined lightning current and surge arrester
with actiVsense technology
Automatically detects the operating voltage of the
wanted signal
Optimally adjusts the voltage protection level to the
signal voltage currently applied
DEHNguard M ... CI 275 (FM)
No additional backup fuse required due to arrester
backup fuse integrated in the protection module
Prewired,modular surge arrester for 230/400 V
systems consisting of a base part and plug-in
protection modules
BXT ML4 BE C 12
BXT combined lightning current and surge arrester
module with LifeCheck for protecting 2 pairs
Specifically coordinated with applications with diode
circuit at the input,current loops (TTY) and opto-
coupler inputs
DRC LC M3+ Test Device
For fast testing of LifeCheck-equipped SPDs
Handheld device, easy transport and operation
With database function for the documentation
of results
BXT ML2 B 180
TYPE 1 lightning current arrester module,
with LifeCheck monitoring system
Two-pole device with direct shield earthing
Suitable for almost all applications
BXT ML2 BD HF EX 6
BXT surge arrester module with LifeCheck for use in
hazardous areas
For protecting one pair of intrinsically safe circuits
and RS485 bus systems
Self-capacitance and self-inductance negligibly small
DEHNguard S CI 275 (FM)
No additional backup fuse required due to arrester
backup fuse integrated in the protection module
Universal surge arrester consisting of a base part
and a plug-in protection module with integrated
backup fuse
DEHNguard M YPV SCI ... FM
Prewired,modular surge arrester for use in photovol-
taic systems consisting of a base part and plug-in
protection modules
Combined disconnection and short-circuiting device
with safe electrical isolation in the protection module
prevents fire damage due to d.c.arcs
See page 69
See page 75
See page 104
See page 179
See page 195
See page 362
See page 316
See page 191
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DEHNguard M ... 150/320/385/440 (FM)
Prewired,modular surge arrester consisting of a base
part and plug-in protection modules
New models with a max. continuous operating voltage
of 150 V,320 V,385 V and 440 V
BITZDUCTOR VT ALD 36
Energy coordinated combined lightning current and
surge arrester
For protecting earth-free d.c.supply systems up to
nominal currents of 4 A
Low voltage protection level,suitable for sensitive
terminal equipment
DPRO 230 LAN100
Dual surge protection for power supply systems and
LAN interfaces
Gigabit Ethernet protection (1000 Base-T) with an
elegant design
DEHNguard S VA (FM)
Universal surge arrester consisting of a base part and
a plug-in protection module
Leakage-current-free series connection of a varistor
and a spark gap in the plug-in protection module
DK 25 Feed-Through Terminal
For changing the wiring level
Supports lightning-impulse-current-conform
installation of SPD combinations
NET PRO 10X TC1 RST
Compact and cost-effective protective board with 10
RJ45 ports for the protection of telecommunications
systems
Input equipped with cage spring terminals which can
be removed as a block for easy line measuring
Integrated protection against power crossing
IGA 10 V2 IP54
Enclosure for the installation of surge arresters,
tested with lightning impulse currents
Degree of protection of IP54
Sealable
EG NET PRO 10X 19
19 (482.6 mm) stainless steel enclosure for installati-
on into distribution cabinets
For up to 5 NET PRO 10X TC1 RST protective boards
Compact in design, protection of up to 50 ports over
a vertical module
EG NET PRO 10X 3HE
Stainless steel enclosure,3 vertical modules for instal-
lation in 19 (482.6 mm) distribution cabinets
For NET PRO 10X TC1 RST protective boards
Ideally suited for small-sized distribution boards
DEHNgate DGA LG 7 16 X
Coaxial surge arrester for HF technology
For multi-frequency applications with d.c. supply system
Optionally available with self-extinguishing gas dischar-
ge capsule up to nominal currents of 2.5 A
Maximum transmission and PIM performance
Pipe Clamp for Use in hazardous Areasfor Diameters from 26.9 mm to 500 mm
For installation in potentially explosive atmospheres
(hazardous zones 1 and 2 as well as 21 and 22)
Tested according to explosion group IIB
Considerably reduced installation time
DEHNpipe DPI CD HF EXD 5 M
Flameproof surge arrester for use in hazardous areas
For protecting measuring circuits and bus systems
Easy installation on field devices with a spare cable
gland
BXT ML2 BD DL S 15
BXT combined lightning current and surge arrester
module with LifeCheck monitoring system
Specifically coordinated with the requirements for
Dupline buses
Terminals for direct and indirect shield earthing
DEHNbloc Maxi NH00 255
Coordinated, spark-gap-based lightning current arres-
ter with a discharge capacity up to 25 kA (10/350 s)
No tripping of 32 A gL/gG fuses up to short-circuit
currents of 50 kArms
DEHNbloc M 1 320 (FM)
Coordinated,spark-gap-based lightning current arres-
ter with a max. continuous operating voltage of 320 V
and a discharge capacity up to 25 kA (10/350 s)
No tripping of 32 A gL/gG fuses up to short-circuit
currents of 50 kArms
See page 49
See page 112
See page 252
See page 252
See page 46 (47)
See page 198
See page 252
See page 351
See page 76
See page 146
See page 276
See page 145
See page 223
See page 309
DEHNpipe DPI CD EXD 230 24 M (N)
Dual surge protection for 230 V power supply systems
and data interfaces
Easy installation on field devices with a spare cable
gland
Approved for hazardous areas due to flameproof
enclosure
See page 341
See page 310
NwPos
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100th Anniversary of DEHN. 2
DEHN Worldwide. 8
DEHN Safety according to Specification. 10
Surge protection forPower Supply Systems 15
SPDs for low-voltage installations and equipment
Contents 17
General information 367
Index 372
Surge protection forInformation Technology Systems 153
SPDs for IT installations and equipment
Contents 155
Surge protection forPower Supply and Information Technology Systems 337Combined adapters
Lightning Equipotential Bonding 343Isolating spark gaps and components
Measuring and Test Devices 359
Contents
Valid from 1st April 2010This catalogue replaces the Surge Protection Main Catalogue published in 2008. We reserve the right to introduce changesin performance,dimensions and material in the course of technical progress.The figures shown are without obligation.Misprints,errors and alterations excepted.Reproduction in any form whatsoever is forbidden without our authorisation. Publication No.DS570/E/2010
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100th Anniversary of DEHN....from a workshop to anindustrial enterpriseIn our great-grandparents timeelectricity was by no means amatter of course. In the early20th century sufficient illumina-tion used to be a luxury and aprivilege of the upper class.
Electricity was at best availablein large cities but rarely in ruralareas. The first long-distancetransmission of alternating cur-rent took place in 1891.At that time Oskar von Millersucceeded in transporting elec-trical energy for the first timeover a distance of 176 kilome-tres from Lauffen / Neckar toFrankfurt / Main via a high-
voltage power line (20 kV).This marked the breakthroughof the transmission of alternat-ing current and was a signifi-cant step forward. But it wasstill a long way to go beforethe total population was effi-ciently and reliably suppliedwith electricity. It was only inthe early 1920s that electricitywas made accessible to manysmall towns for the first time.
During this eventful time, HansDehn founded his electricalinstallation company in Nurem-berg on 21st January 1910.
Now, many years later, and yetwithin a comparatively shortperiod of time, which was char-acterised like no other by thechangeful history of Germanyand its people, success and set-
back, war, reconstruction andeconomic crisis, DEHN celebrat-ed its 100th anniversary on21st January 2010.
Starting as a small electricalinstallation company, DEHNbecame a globally operatingfamily-owned company.
The following pages showsome milestones in the com-panys history of 100 years.
On 21st January 1910 the electrician Hans Dehnlaid the foundation for todays company whenregistering an electrical installation business inNuremberg.
Since electric current had to be transported to theconsumer, building installation and particularlythe construction of overhead lines were the mainfields of activity for DEHN electricians under themanagement of Hans Dehn.
1910
After the first successful business years, a sub-sidiary is opened in Neumarkt i.d.Opf. locatedabout 45 km southeast of Nuremberg toadvance electrification in Upper Palatinate.
1921
Apart from overhead lineconstruction and building
installation, the installation of lightning protec-tion systems on buildings is an integral part ofour business activities. Hans Dehn also starts todevelop and manufacture lightning protection
and earthing components.
1923
The company grows year after year and HansDehns sons Walter and Willy become partners.From now on, the family-owned company oper-ates under the name of DEHN + SHNE. In1941 the youngest son Richard becomes apartner.
1933
Hans Dehn quite early deals with lightning pro-tection. His first patent in this field is grantedin 1918.
1918
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The Second World War inevitably slows downbusiness development. The premises in Nurem-
berg and Neumarkt are considerably damagedduring the war. Highly motivated, the familystarts reconstruction.The starting point for post-war activities inNeumarkt was a warehouse built in the lastmonths of the war near Hans-Dehn-Straewhere our head office is located today.
1939 1945
The decision to builda hot dip galvanisingplant in Neumarkt
paves the way forthe extension of thesubsidiary to a pro-duction site.
1948
In the post-war period, businessbegins to pick up again:DEHN + SHNE presents light-ning protection and earthingproducts at the Hanover tradefair for the first time. Theincreasing market demand
requires a further extension ofthe production facilities inNeumarkt.
1952
DEHN seizes the opportunity to market itsproducts abroad: Austria becomes the firstexporting country.
1953
Due to our technical expertknowledge and entrepreneurialvision, we are the worlds first
manufacturer to realise thatexternal lightning protectionhas to be combined with inter-nal lightning protection.The first generation of surgeprotective devices is launched.
1954
The third product field besideslightning and surge protection -safety equipment - is launched.
The ball pin patented for DEHN+ SHNE in 1953 significantlyinfluences the state of the art.
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The pioneering innovation of the separableearth rod considerably complements the rangeof earthing components and is still in greatdemand today.DEHN + SHNE becomes well-known in thefield of earthing technology.
1958
The product range is continuously complement-ed, especially in the field of surge protection.New protective devices such as VA 280 andBLITZDUCTOR are presented on the market.
1970 1980
The first lightning current carrying surgearrester enters the market: VGA 280/4, alsoknown as DEHNventil. It globally becomes asynonym for a new generation of surgearresters. DEHN + SHNE captures a leadingposition in the sector of surge protection.
1984
Foundation of DESITEK A/S in Denmark. It isthe first of todays 10 sales companies in for-eign countries.
1988
The success story of surge protection startswith VM 280, the worlds first arrester with amodular width of 17.5 mm.
1986
The KS connector is devel-oped to reliably connectcircular conductors to flatprofiles.
1956
The universal MV clamp from our lightningprotection portfolio is launched.
In Switzerland DEHN + SHNE participates in theELVATEC AG, which has been distributing DEHNproducts on the Swiss market for several years.
1990
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Development and implementation of the masterplan DEHN 2000.A milestone in the companys history:DEHN+SHNE prepares for the future.National and international success requires com-prehensive restructuring, reorganisation andreorientation.
1991
The new energy-coordinated Red/Line arrester family for low-voltage consumersinstallations is launched.Surge protective devices such as DEHNport and DEHNguard start their story ofsuccess.Red/Line becomes the general term for all protective devices for use in powersupply systems.
1993
The new energy-coordinated Yellow/Linearrester family for the protection of data tech-nology and automation systems, including thekey product BLITZDUCTOR CT, is another mile-stone of our research and development.
1996
The positive development in Spain requires newdistribution channels. DEHN IBERICA S.A. is found-ed in co-operation with our long-standing partner.
1992
In this year DEHN + SHNE is ready to makethe leap to America. DEHN Inc. is founded.
DEHN POLSKA Sp. z o.o. is founded in Warsawto serve the Polish market more efficiently.
1999
Foundation of DEHN & FILS in Strasbourg, laterrenamed in DEHN FRANCE S.a.r.l.
1998
To intensify our activities in England DEHN (UK)Ltd. is founded near Manchester.
1994
In co-operation with our long-time partner on the Italianmarket DEHN ITALIA S.p.A. is founded in Bozen.
After almost 50 years on the Austrian market, asubsidiary is founded, DEHN AUSTRIA GmbH.
2000
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Safe and functional arresters with a unique design. The new Red/Line andYellow/Line product families are presented on international trade fairs in Hanoverand Frankfurt.
2006
In 2006 DEHN + SHNE was the first companyto obtain VdS certification for surge protective
devices.
DEHN Surge Protection(Shanghai) Co.Ltd is founded inShanghai to service the Chinesemarket, which has been workedby an agent since 1992.
2005
50 years of surge protection byDEHN + SHNE.In 1954 only few believed in thesuccess of surge protection.Today surge protective devicesare an essential part of electricalinstallations.
2004
The HVI conductor is a milestone in externallightning protection.The separation distance can be easily main-tained even in case of challenging architecturaldesign by using the new, high-voltage-resistantdown conductor.
2003
Completion of the new administration buildingon Hans-Dehn-Strae.
The successful DEHNventil has a strong succes-sor: The new DEHNventil.It is a perfect all-in-one solution with completedevices for all system configurations(TN-C, TN-S, TT).
2002
Moreover, the master plan is continued:Move into new production facilities for surgeprotective devices.
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On 21st January 2010 DEHN + SHNE celebrates its 100th anniversary a timefor joy, pride and review.During our history of 100 years, showing and pioneering new ways in the field oflightning protection has always been a major concern.
We provide protection against lightning, surges and possible hazards of electricity a triumvirate of safety.
Lightning protection
Surge protectionSafety equipment
DEHN your safety is our concern.
www.dehn.de
2010
Evolution of safety DEHNguardSCI is a surge protective devicefor PV systems which combineseffective surge protection withthe protection of persons andfire protection.
2009
The new space-saving DEHNrecord MCM XTcondition monitoring system acts like an earlywarning system generating a fault messageeven in the event of imminent arrester over-load.Thus faults can be identified in advance andprecise status messages support maintenancestaff in diagnosing these faults.
2008
Completion of a new three-storey productionfacility. It stands for a further big step forwardin the scope of the master plan and providesthe company with more space for production.
2007
BLITZDUCTOR XTU is the firstarrester to automatically adjust itsnominal voltage. It does not havea specified nominal voltage andcan thus be used for any voltagein the range from 0 to 180 V d.c.thanks to actiVsense technology.
DEHN + SHNEproves for the firsttime absence ofignition sparkswhen lightningcurrent flowsthrough a pipeclamp.The newly
developed pipe clamp for hazardous areas canbe installed in potentially explosive areas withlittle effort.
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DEHN Worldwide.
AlgeriaArgentinaAustraliaAustriaBelgiumBelizeBoliviaBrazilBulgariaCanadaCap VerdeChileChinaColumbiaCosta RicaCroatiaCubaCzech RepublicDenmarkEl SalvadorEstoniaF.Y.R.O.MFinland
FranceGreat BritainGreeceGuatemalaHondurasHungaryIcelandIndiaIranIrelandIsraelItalyJapanLatviaLebanonLithuaniaLuxembourgMalaysiaMauritiusMexico
NetherlandsNew ZealandNicaraguaNigeriaNorwayOmanPakistanPanamaPeruPolandPortugalRomaniaRussiaSaudi ArabiaSerbiaSingaporeSlovakiaSloveniaSouth AfricaSpainSri LankaSwedenSwitzerland
SyriaTaiwanThailandTurkeyUgandaUnited Arab EmiratesUSAVenezuela
We shall be pleased to name youthe right contact person of oursubsidiaries or representatives.
Please contact our ExportDepartment under
Tel. +49 9181 906 462Fax +49 9181 906 444
or send an e-mail [email protected]
8
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Failures of technical systems and installations are very unpleasantfor the operators. These require faultless operation from theequipment both under normal conditions and in case of thun-derstorms. Loss reports of insurance companies show clearly that
there is a backlog demand both in the private (Fig. 1) and com-mercial sector (Fig. 2). A comprehensive protection conceptwould help to achieve this aim.The Lightning Protection Zones Concept enables designers, con-structors and operators to plan, perform and control protectionmeasures.All relevant devices, installations and systems are thusreliably protected and furthermore with economically acceptableefforts.
Sources of interferenceSurges arising due to thunderstorms are caused by direct or closelightning strokes or distant lightning strokes (Fig. 3).Direct or close lightning strokes are strokes into the lightning pro-tection system of a structure, into its immediate surroundings orinto the conductive systems entering the structure (e.g. low-volta-ge power supply, telecommunications lines and control lines...).
Due to their amplitudes and energy loads, the arising impulse cur-rents and impulse voltages as well as the corresponding electro-magnetic field (LEMP) represent a special risk for the system tobe protected.
In case of a close or direct lightning strike, the surges (Fig. 3:Case 1a) are caused by a voltage drop at the impulse earthingresistance and the resulting potential rise of the structure towardsthe distant surroundings. This is the maximum load on electricalinstallations in structures.
The characteristic parameters of flowing impulse currents (peakvalue, rate of current rise, load, specific energy) can be describedwith the impulse-current wave form 10/350 s (Fig. 4) and aredefined in international, European and national standards as testcurrents for components and devices for protection against directlightning strokes.
In addition to the voltage drop at the impulse earthing resistance,surges arise in the electrical building installation and the systems
connected to it and equipment due to the induction effect of theelectromagnetic lightning field (Fig 3: Case 1b).The power of these induced surges and the resulting impulse cur-rents is considerably lower than the power of a direct lightningimpulse current and is therefore only described with the impulsecurrent wave 8/20 s (Fig. 4). Components and equipment, whichdo not have to conduct currents from direct lightning strokes, aretherefore tested with impulse currents of 8/20 s.
Protection philosophyDistant strokes are lightning strokes from a distance to the objectto be protected, lightning strokes into the medium voltage over-head line network or into its immediate surroundings or lightningdischarges from cloud to cloud (Fig. 3: Cases 2a, 2b and 2c).
In analogy to induced surges, the effects of distant lightning stro-kes on the electrical system of a structure are controlled by devi-ces and components, which are designed accordingly for impulsecurrent wave 8/20 s.Surges due to switching operations (SEMP) are caused by e.g.
switching off inductive loads(e.g. transformers, coils, motors),
ignition and interruption of electric arcs(e.g. arc welding device),
tripping of fuses.
The effects of switching operations in electrical installations ofstructures can also be simulated with impulse currents of waveform 8/20 s for testing purposes.
DEHN Safety according to Specification.
Lightning Protection Zones Concept
Fig. 1: Causes of damage to electronic equipment,Analysis of 7370 damage claims(Ref.:Wrttemberigsche Versicherung AG)
Fig. 2: Average damage causes during the last years(Ref.: Gesamtverband der Deutschen Versicherungswirtschaft e.V.)
Water5.6 %
Fire4.6 %
TheftVandalism
27.1 %
23.7 %Surges
(lightning dischargesswitching operations)
15.3 %Others
0.8 %Elemental
22.9 %Negligence
Others41 %
14 %Unknown 45 %
Lightning/Surges
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To ensure continuous availability of complex power sup-ply and IT systems even in case of a direct lightningeffect, further measures for surge protection of electricaland electronic installations are necessary based on abuilding lightning protection system. Taking all causes ofsurges into consideration is very important. For this pur-pose, the Lightning Protection Zones Concept of IEC62305-4 is applied (Fig. 5).A structure is subdivided in different risk zones. These
zones help to define the necessary devices and compo-nents for lightning and surge protection.Part of an EMC-conform lightning protection zones con-cept is an external lightning protection system (includingair-termination system, down-conductor system, earth-ing), equipotential bonding, spatial shielding and surgeprotection for the power supply systems and IT systems.The lightning protection zones have to be definedaccording to Table 1.
In correspondence with the requirements and loads on
surge protective devices with respect to their installationsites, these are classified as lightning current arresters,surge arresters and combined lightning current andsurge arresters.The highest requirements for the discharge capacity aremade on lightning current and combined lightning cur-rent and surge arresters used for the transition fromLightning Protection Zone 0A to 1 or 0A to 2.
These SPDs must be able to conduct partial lightningcurrents (wave form 10/350 s) several times withoutdestruction in order to prevent the penetration of
destructive partial lightning currents into the electricalinstallation of a building.At the boundary from LPZ 0B to 1 or downstream of thelightning current arrester at the boundary from LPZ 1 to2 and higher, surge arresters are used for protectionagainst surges. Their function is to further reduce boththe residual loads of the upstream protection levels andlimit the induced or own surges.
The aforementioned lightning and surge protectivemeasures at the boundaries of the lightning protection
zones apply to both power supply systems and IT sys-tems to the same extent.All measures described in the EMC-conform LightningProtection Zones Concept help to achieve a permanentsystem availability of a modern infrastructure.
low voltage powersupply system
20 kVL1L2L3
PEN2c
1 2a
2b
1b
1a
Rst
1a
Direct/Close lightning strike:
Lightning strike into the external lightningprotection system, process framework(in industrial installations), cables etc.
Voltage drop at the impulse earthingresistance RstInduced voltage in loops
1
1b
IT system
Distant lightning strike
Strike into medium volta-ge overhead lines
Surge travelling waves onoverhead lines due tocloud-to-cloud lightning
Fields of the lightningchannel
2a
2b
2c
Fig. 3: Causes of surges in case of lightning discharges
100 kA
80 kA
60 kA
50 kA
40 kA
20 kA
200 s 350 s 600 s 800 s 1000 s
2
1
Wave form [s] 10/350 8/20
imax [kA] 100 5
Q [As] 50 0.1
W/R [J/] 2.5 106 0.4 103
Standard IEC 62305-1 EN 61000-4-5
t (s)
(kA)
i
21
Fig. 4: Test impulse current for Test impulse current forlightning current arresters surge arresters21
ventilation
down-conductor
system
spatial shield
terminal device
steel reinforcement
IT system
foundation earth electrode
air-termination system
l.v. powersupply system
Lightning equipotential bondingLightning current arrester (SPD Type 1)
Local equipotential bondingSurge arrester (SPD Type 2, SPD Type 3)
Lightning equipotential bondingLightning current arrester
Local equipotential bondingSurge arrester
Lightning electro-magnetic pulse
Switching electro-magnetic pulse
Lightningprotection zone
Fig. 5: EMC-based lightning protection zones concept
Table 1: Definition of lightning protection zones (LPZ)
LEMP protection of structures with electrical and electronic systemsaccording to IEC 62305-4
Lightning Protection Zone Description
LPZ 0A Threat by direct lightning strokes, impulse currents up to complete lightningcurrents and the entire lightning field.
LPZ 0B Protected against direct lightning strokes. Threat by impulse currents up topartial lightning currents and the entire lightning field.
LPZ 1 Impulse currents are further limited by current distribution and SPDs situatedat the zone boundaries. The lightning field is mostly attenuated by spatialshielding.
LPZ 2 Impulse currents are further limited by current distribution and SPDs situatedat the zone boundaries. The lightning field is mostly attenuated by spatialshielding.
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DEHN Technical Definitions.
Surge Protective Devices (SPD)
Surge protective devices are items of equipmentwhose basic components are voltage-controlledresistors (varistors, suppressor diodes) and/orspark gaps (discharge paths). The function ofsurge protective devices is to protect other elec-trical equipment and installations against imper-missibly high surges and/or to establish theequipotential bonding.Surge protective devices are classified
a) according to their application in
Surge protective devices for power sup-ply systems and equipmentfor nominal voltage ranges up to 1000 V
according to EN 61643-1:2001 as SPD Types1/2/3
according to IEC 61643-1:1998-02 as SPDsClass I / II / III
Surge protective devices for IT systemsand equipmentfor protection of modern electronic systems intelecommunications and signal-processing net-works with nominal voltages up to 1000 V a.c.(root-mean-square value (rms)) and 1500 Vd.c. against indirect and direct effects of light-ning strokes and other transients.
according to IEC 61643-21:2000 + Corrigen-dum:2001, EN 61643-21:2001 and DIN VDE0845 Part 3-1.
Isolating spark gaps for earth-termina-tion systems or for equipotential bond-ing
b) according to their impulse current dis-charge capacity and their protective effectin
Lightning current arresters /
Coordinated lightning current arrestersfor interference due to direct or close light-ning strokes for protection of installationsand equipment (for use at the boundaries ofLightning Protection Zones (LPZ) 0A and 1).
Surge arrestersfor distant lightning strokes, switching over-voltages as well as electrostatic dischargesfor protection of installations, equipment andterminal devices (for use at the boundariesdownstream of LPZ 0B).
Combined lightning current and surgearrestersfor interference due to direct or close light-ning strokes for protection of installations,equipment and terminal devices (for use atthe boundaries between LPZ 0A and 1 as wellas 0A and 2).
Technical data of surge protective devices
The technical data of surge protective devicescomprise information defining the applicationconditions upon
application(e.g. installation, mains conditions,temperature)
performance in case of interference(e.g. impulse current discharge capacity,follow current extinguishing capability,voltage protection level, response time)
performance during operation(e.g. nominal current, attenuation,insulation resistance)
performance in case of failure(e.g. backup fuse, disconnection device,fail-safe)
Categories according to IEC 61643-21: 2001(DIN VDE 0845 Part 3-1)
For testing the current carrying capability andvoltage limitation under influences of impulses,a variety of impulse voltages and impulse cur-rents is described in IEC 61643-21:2001 (DINVDE 0845 Part 3-1). They are sorted in Table 3
and provide preferred values. In table 2 of IEC61643-22 (DIN VDE 0845-3-2) the source oftransients is assigned to the different impulsecategories according to the coupling mechanism.Category C2 includes inductive couplings(surges), category D1 galvanic couplings (light-ning currents). The relevant category is specifiedin the technical data.
Cut-off frequency fG
defines the frequency-dependent performanceof an SPD. Cut-off frequencies are frequencies
causing an insertion loss (aE) of 3 dB under cer-tain test conditions (see EN 61643-21:2001).If no other value is indi-cated, the frequencyvalue refers to a 50 system.
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DEHN + SHNE surge protective devicesexceed the values indicated in the categories.The explicit value for the impulse current carry-ing capability is therefore indicated by the
stated nominal discharge current (8/20 s) andlightning impulse current (10/350 s).
Combined impulse UOC
is generated by a hybrid generator (1.2/50 s,8/20 s) with a virtual impedance of 2 .Theopen-circuit voltage of this generator is de-fined as UOC. UOC is especially indicated forSPDs Type 3.
Degree of protection
The degree of protection (IP) corresponds tothe subdivision into degrees of protection inaccordance with DIN EN 60529 (VDE 0470Part 1).
Disconnecting time ta
is the time passing until the automatic discon-nection from power supply of the electricalcircuit or equipment to be protected in case ofa failure. The disconnecting time is an applica-tion-specific value resulting from the intensityof the fault current flowing and the character-
istics of the protective device.
Disconnection capacity / Follow currentextinguishing capability Ifi
The disconnection capacity is the uninterfered(prospective) rms value of the mains followcurrent, which can automatically be extin-guished by the surge protective device at pres-ence of UC. It can be proven in the scope of anoperating duty test according to EN 61643-11.
Frequency range
characterises the transmission band or let-through frequency of an SPD according tothe described attenuation characteristics.
Insertion loss
With an indicated frequency, the insertion lossof a surge protective device is defined by therelation of the voltage value at the installationsite before and after installing the SPD.If no other value is indicated, the value refersto a 50 system.
LifeCheck
Repeated discharges with values beyond thespecifications of the device may overload SPDsused in IT systems. In order to ensure a high
system availability, SPDs should therefore besubject to systematic tests. LifeCheck allowsfor quick and easy SPD testing (refer also topage 177).
Lightning impulse current Iimp
is a standardised impulse current curve, with awave form of 10/350 s. Its parameters (peakvalue, charge, specific power) simulate theloads of natural lightning currents.Lightning current and combined lightningcurrent and surge arresters must be capable ofdischarging such lightning impulse currentsseveral times without consequential destruc-tion of the equipment.
Mains-side overcurrent protection /Backup fuse
is an overcurrent protective device (e.g. fuse orcircuit breaker), which is installed outside ofthe surge arrester on the supply side to inter-rupt the power-frequency follow currents, ifthe breaking capacity of the surge protectivedevice is exceeded.
Max. continuous operating voltage UC
is the root mean square (rms) value of themaximum voltage, which may be applied tothe correspondingly marked terminals of thesurge protective device during operation. It isthe maximum voltage on the SPD in thedefined non-conductive state, which ensuresthat this state is regained after response anddischarge.The value of UC shall be chosen in accordancewith the nominal voltage of the system to beprotected and the requirements of the installa-tion provisions (IEC 60364-5-534).
Max. discharge current Imax
is the maximum peak value of the impulse cur-rent (8/20 s), which can be safely dischargedby the device.
Max. transmission capacity
defines the maximum RF capacity which canbe transmitted via a coaxial surge protectivedevice without interfering with the protectivecomponent.
Nominal discharge current In
is the peak value of an impulse current (waveform 8/20 s), which the surge protectivedevice is rated for according to a certain testprogramme.
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Nominal load current (nominal current) IL
is the highest permissible operating current,which may be permanently conducted via thecorrespondingly marked terminals.
Nominal voltage UN
corresponds to the nominal voltage of the sys-tem to be protected.The nominal voltage isoften indicated for surge protective devices usedin IT installations for type designation purposes.For a.c. voltages it is indicated as rms value.
N-PE surge arresters
are surge protective devices exclusively designedfor installation between the N and PE conductor.
Operating temperature range TU
indicates the range in which the devices can beused. For devices without self-heating, it is equalto the ambient temperature range. The tempera-ture rise of devices with self-heating must notexceed the maximum value indicated.
Protective circuit
Protective circuits are multi-stage, cascaded pro-tective devices. The individual protection stagescan consist of discharge paths, varistors, semi-conductor elements. The energy coordination ofthe individual protection stages is performedwith decoupling elements.
Protective conductor current IPE
is the current flowing through the PE connectionwhen the surge protective device is connected tothe maximum continuous operating voltage UC,corresponding to the installation instructionsand without load-side consumers.
Response time tA
Response times generally characterise theresponse performance of the individual protec-tion elements used in surge protective devices(refer also to page 371).Depending on the steepness du/dt of the im-pulse voltage or di/dt of the impulse current, theresponse times can change within certain limits.
Return loss
indicates for high-frequency applications, howmany rates of the forward wave are reflectedat the protective device (transition point).It is a direct measure for rating the adjustment
of the protective device to the surge impedanceof the system.
Series impedance
is the impedance in the direction of the signalflow between input and output of the SPD.
Shield attenuation
Relation of the power fed into a coaxial cable tothe power radiated through the cable from thephase conductor.
Short-circuit withstand capability
is the value of the prospective power-frequencyshort-circuit current controlled by the surge pro-tective device if it is supplied with an upstreambackup fuse.
SPD class (Yellow/ Line)
All DEHN surge arresters for use in IT systemsare assigned a Yellow/Line SPD Class and aremarked correspondingly with a symbol in thetechnical data sheet and on the rating plate
(refer also to page 151).
Thermal disconnector
Surge protective devices for use in power supplysystems, which are supplied with voltage-con-trolled resistors (varistors), mostly have an inte-grated disconnection device, which isolates thesurge protective device from mains in case ofoverloads and indicates this operating state.The disconnector reacts to the joule heatgenerated by an overloaded varistor and discon-nects the surge protective device from mains, ifa certain temperature is exceeded.The disconnection device is designed to discon-nect the overloaded surge protective device intime to avoid a fire hazard. It is not designed toensure the protective measure of protectionagainst indirect contact.The function of these thermal disconnectors canbe tested by simulated overloads/ageing of theSPD.
Voltage protection level UpThe voltage protection level of a surge protectivedevice is the maximum instantaneous value of
the voltage on the terminals of a surge protec-tive device, determined from the standardisedindividual tests for
Lightning impulse sparkover voltage1.2/50 s (100%)
Response voltage for a steepness of 1 kV/s
Residual voltage for nominal dischargecurrent Ures
The voltage protection level characterises thecapability of a surge protective device to limitsurges to a residual level. If used in power sup-ply systems, the voltage protection level defines
the location of use by the overvoltage categoryaccording to DIN VDE 0110-1:2003-11 (DIN EN60664-1, IEC 60664-1). For surge protectivedevices designed for protection of IT systems,the voltage protection level has to be adaptedto the immunity of the equipment to be protect-ed (IEC 61000-4-5: 2001-12).
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Surge protection for
POWER SUPPLY SYSTEMSSPDs for low-voltage installations and equipment
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Easy choice 18
Combined SPDs Type 1 31
Lightning Current Arresters Type 1 45
N-PE Lightning Current Arresters Type 1 63
Surge Arresters Type 2 69
Surge Arresters Type 3 119
Accessories 145
Measuring and Test Devices 365
POWER SUPPLY SYSTEMS
www.dehn.de 17
AccessoriesSurge Arresters
Type 3Surge Arresters
Type 2N-PE Lightning Current
Arresters Type 1Lightning CurrentArresters Type 1
Combined SPDs Type 1
CONTENTS
Accessories
Surge Arresters Type 3
Lightning CurrentArresters Type 1
N-PE Lightning CurrentArresters Type 1
Combined SPDs Type 1
Surge Arresters Type 2
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POWER SUPPLY SYSTEMS
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Easy Choice
18
AccessoriesSurge Arresters
Type 3Surge Arresters
Type 2N-PE Lightning Current
Arresters Type 1Lightning CurrentArresters Type 1
Combined SPDs Type 1
L1L2L3N PE
DEHNguard
DGMOD275
DEHNguard
DGMOD275
L1 L2
PE
DEHNguard
DGMOD275
L3
DEHNguard
DGMOD275
N
9
DEHNguard
DGMOD275
DEHNguard
DGMOD275
L1 L2
PE
DEHNguard
DGMOD275
L3
DEHNguard
DGMOD275
N
9
L1 L2 L3 PEN
L1 L1 L2 L2 L3 L3
N /PE N N/PEN
DEHNbloc DB 3 255 H
L1 L1 L2 L2
PEN
L3 L3
DEHNventil
DVMOD255
DEHNventil
DVMOD255
DEHNventil
DVMOD255
9
DEHNbloc
DBM1
255FM
N/PE(N)
L/N
DEHNbloc
DBM1
255FM
N/PE(N)
L/N
DEHNbloc
DBM1
255FM
N/PE(N)
L/N
S-Schutz
DEHNflex
16 A
SocketOutlet
1 x DSA 230 LA Part No. 924 370for cable ducts
1 x STC 230 Part No. 924 350for existing socket outlets
with remote signalling contact:1 x DG M TNS 275 FM Part No. 952 405
1 x DV M TNC 255 Part No. 951 300alt. 1 x DV M TNC 255 FM Part No. 951 305also available as
1 x DV M TNS 255 Part No. 951 400alt. 1 x DV M TNS 255 FM Part No. 951 405
1125 A 1125 A
1 x DG M TNS 275 Part No. 952 400
Cable length 15 m
1 x DB 3 255 H Part No. 900 120
alt. 3 x DB 1 255 H Part No. 900 2221 x MVS 1 6 Part No. 900 815
1315 A
3 x DB M 1 255 FM Part No. 961 1251 x MVS 1 6 Part No. 900 815
alt. 3 x DB M 1 255 Part No. 961 1201 x MVS 1 6 Part No. 900 815
SubdistributionBoard
1315 A
1 x DFL M 255 Part No. 924 396for flush-mounted systems
1315 A
Cablelength5m
SPD Type 3(Surge arrester)
SPD Type 3(Surge arrester)
SPD Type 3(Surge arrester)
SPD Type 2(Surge arrester)
SPD Type 2(Surge arrester)
indication
ofinterference
indication
ofinterference
EBB
1) Only required, if a fuse of the same or a lower nominal value is not already provided in the upstream power supply.
SPD Type 1(Combined lightning current
and surge arrester)
DEHNventil
Directly coordinated toRed/Line SPDs Type 2 and 3
without additional cable length.
For serial connection please see also page 21
SPD Type 1(Coordinated lightning
current arrester)
DEHNbloc MCoordinated to DEHNguard
without additional cable length.
SPD Type 1(Lightning current arrester)
MainDistributionB
oard
TN systems: Office Building Separation of the PEN in the main distribution board
Arrangement I Arrangement II Arrangement III
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POWER SUPPLY SYSTEMS
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PROTECTOR
berspannungsschutz
0 1
SFL-Protector
DEHNguard
DGMOD275
DEHNguard
DGMOD275
L1 L2
PEN
DEHNguard
DGMOD275
L3
9
DEHNguard
DGMOD275
DEHNguard
DGMOD275
L1 L2
PEN
DEHNguard
DGMOD275
L3
9
L1 L1 L2 L2 L3 L3
N /PE N N/PEN
DEHNbloc DB 3 255 H
L1 L1 L2 L2
PEN
L3 L3
DEHNventil
DVMOD255
DEHNventil
DVMOD255
DEHNventil
DVMOD255
9
DEHNbloc
DBM1
255FM
N/PE(N)
L/N
DEHNbloc
DBM1
255FM
N/PE(N)
L/N
DEHNbloc
DBM1
255FM
N/PE(N)
L/N
L1 L2 L3 PEN
L1L2 L3 N PE
16 A
SocketOutlet
MainDistributionBoard
SubdistributionBoard
1 x NSM PRO EW Part No. 924 342 1 x DPRO 230 F Part No. 909 2401 x DPRO 230 Part No. 909 230
1 x SFL PRO Part No. 912 260
1 x DG M TNC 275 Part No. 952 300with remote signalling contact:1 x DG M TNC 275 FM Part No. 952 305
1 x DB 3 255 H Part No. 900 120
alt. 3 x DB 1 255 H Part No. 900 2221 x MVS 1 6 Part No. 900 815
1 x DV M TNC 255 Part No. 951 300
alt. 1 x DV M TNC 255 FM Part No. 951 305
1125 A 1125 A
1315 A 1315 A
3 x DB M 1 255 FM Part No. 961 1251 x MVS 1 6 Part No. 900 815
alt. 3 x DB M 1 255 Part No. 961 1201 x MVS 1 6 Part No. 900 815
1315 A
SPD Type 3(Surge arrester)
SPD Type 3(Surge arrester)
SPD Type 3(Surge arrester)
Cablelength5m
Cable length 15 m
SPD Type 2(Surge arrester)
SPD Type 2(Surge arrester)
SPD Type 1(Combined lightning current
and surge arrester)
DEHNventil
Directly coordinated toRed/Line SPDs Type 2 and 3
without additional cable length.
For serial connection please see also page 21
SPD Type 1(Coordinated lightning
current arrester)
DEHNbloc MCoordinated to DEHNguard
without additional cable length.
SPD Type 1(Lightning current arrester)
1) Only required, if a fuse of the same or a lower nominal value is not already provided in the upstream power supply.
indication
ofinterference
indication
ofinterference
EBB
Easy Choice
19
AccessoriesSurge Arresters
Type 3Surge Arresters
Type 2N-PE Lightning Current
Arresters Type 1Lightning CurrentArresters Type 1
Combined SPDs Type 1
TN systems: Example: Office Building Separation of the PEN in the subdistribution board
Arrangement I Arrangement II Arrangement III
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POWER SUPPLY SYSTEMS
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L1 L2 L3 PEN
DEHNguard
DGMOD275
DEHNguard
DGMOD275
L1 L2
PEN
DEHNguard
DGMOD275
L3
9
VNHVNH00280
VNHVNH00280
VNHVNH00280
DEHNbloc
DBM1
255FM
N/PE(N)
L/N
DEHNbloc
DBM1
255FM
N/PE(N)
L/N
DEHNbloc
DBM1
255FM
N/PE(N)
L/N
DEHN SPD
SPS PRO
function
OUT / FM
99 / IN
DEHNrail
DRM4
P255FM
L1 L2 L3 N 9
L1 L2 L3 N 9
L1 L1 L2 L2
PEN
L3 L3
DEHNventil
DVMOD255
DEHNventil
DVMOD255
DEHNventil
DVMOD255
9
DEHNrail
DRM2P255FM
4 3
2 1
9
9
NETZFILTER
L L N NOUT
L L N NIN9 9
9 9
3 x V NH00 280 Part No. 900 261
3 x DBM NH00 255 Part No. 900 255
1315 A
1 x DV M TNC 255 FM Part No. 951 305
alt. 1 x DV M TNC 255 Part No. 951 300
1315 A
indication
ofinterference
1 x DG M TNC 275 Part No. 952 300or with remote signalling contact:1 x DG M TNC 275 FM Part No. 952 305
1125 A
13 A
1 x SPS PRO Part No. 912 253 1 x DR M 4P 255 FM Part No. 953 405alt. 1 x DR M 4P 255 Part No. 953 400
125 A
electronicequipment
1 x DR M 2P 255 FM Part No. 953 2051 x NF 10 Part No. 912 254
L1L2L3N PE
Cablelength5m
32 A
Switchgear/Machine
SPD Type 2(Surge arrester)
SPD Type 2(Surge arrester)
MainDistributionBo
ard
SubdistributionBoard
SPD Type 1(Combined lightning current
and surge arrester)
SPD Type 3(Surge arrester)
SPD Type 3(Surge arrester)
SPD Type 3(Surge arrester)
DEHNventil
Directly coordinated toRed/Line SPDs Type 2 and 3
without additional cable length.
For serial connection please see also page 21
2
SPS
1) Only required, if a fuse of the same or a lower nominal value is not already provided in the upstream power supply.2) Without separate backup fuse in case of earth-fault- and short-circuit-proof installation.
SPD Type 1(Coordinated lightning
current arrester)
DEHNbloc MCoordinated to DEHNguard
without additional cable length.
3 x DB M 1 255 FM Part No. 961 1251 x MVS 1 6 Part No. 900 815
alt. 3 x DB M 1 255 Part No. 961 1201 x MVS 1 6 Part No. 900 815
indication
ofinterference
indication
ofinterference
1315 A
110 A
SPS
25 A alsopermissiblewithout NF 10
SPD Type 1(Coordinated lightning
current arrester)
DEHNblocMaxiDBMNH00255
DEHNblocMaxiDBMNH00255
DEHNblocMaxiDBMNH00255
EBB
TN systems: Example: Industry Separation of the PEN in the subdistribution board
Easy Choice
20
AccessoriesSurge Arresters
Type 3Surge Arresters
Type 2N-PE Lightning Current
Arresters Type 1Lightning CurrentArresters Type 1
Combined SPDs Type 1
Arrangement I Arrangement II Arrangement III
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POWER SUPPLY SYSTEMS
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PRO
TECTO
R
DEHNrail
DRM2
P255FM
21 9
DEHNventil ZP
DV ZP TNC 255
PEN9
PEN
L3
L2
L1
L1L2L3N PE
16 A
SocketOut
let
EBB
HeatingCon
trol
1 x DV ZP TNC 255 Part No. 900 390
also available for 5-wire systems1 x DV ZP TT 255 Part No. 900 391
Note:As an alternative, surge arresters can also beused downstream of meter panels
(e.g. DG M TNC 275 Part No. 952 300),if no
lightning protection system,
electrical power supply by the service entry mast,
antenna of the roof
is available. CentralM
ainand
Subdistribut
ionBoard
1 x DPRO 230 Part No. 909 2301 x DPRO 230 F Part No. 909 2401 x SFL PRO Part No. 912 2601 x DR M 2P 255 Part No. 953 200
KW h
heating
315 A
L1L2L3PEN
SPD Type 1(Combined lightning current
and surge arrester)
SPD Type 3(Surge arrester)
SPD Type 3(Surge arrester)
Cablelength5m
TT system: Example: Single-family house
Easy Choice
21
AccessoriesSurge Arresters
Type 3Surge Arresters
Type 2N-PE Lightning Current
Arresters Type 1Lightning CurrentArresters Type 1
Combined SPDs Type 1
TN systems: Example: Single-family house
DEHNventil
DVMOD255
DEHNventil
DVMOD255
DEHNventil
DVMOD255
DEHNventil
DVMODNPE
50
L1 L2
PE
L3 N
9
DEHNrail
DRM2
P255FM
21 9
RCD
L1L2L3N PE
16 A
SocketOutlet
HeatingControl
1 x DV M TT 255 Part No. 951 310 CentralMainand
SubdistributionBoard
1 x DR M 2P 255 Part No. 953 200
EBB
25 A
1 x DFL M 255 Part No. 924 396
heating
L1L2L3N
DEHNflex
Cablelength5m
Note:As an alternative, surge arresters can also beused downstream of meter panels(e.g. DG M TT 275 Part No. 952 310),if no
lightning protection system,
electrical power supply by the service entry mast,
antenna of the roof
is available.
SPD Type 1(Combined lightning current
and surge arrester)
SPD Type 3(Surge arrester)
SPD Type 3(Surge arrester)
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POWER SUPPLY SYSTEMS
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for cable ducts for existing socket outletsfor flush-mounted systems
Cablelength5m
SPD Type 3(Surge arrester)
SPD Type 3(Surge arrester)
SPD Type 3(Surge arrester)
1) Only required, if a fuse of the same or a lower nominal value is not already provided in the upstream power supply.
N
EBB
DEHNguard
DGMOD275
DEHNguard
DGMOD275
L1 L2
PE
DEHNguard
DGMOD275
L3 N
DEHNguard
DGMODNPE
9
DEHNguard
DGMOD275
DEHNguard
DGMOD275
L1 L2
PE
DEHNguard
DGMOD275
L3 N
DEHNguard
DGMODNPE
9
DEHNflex
S-Schutz
DEHNventil
DVMOD255
L1 L1 L2 L2
PE
L3 L3 N
9
DEHNventil
DVMOD255
DEHNventil
DVMOD255
DEHNventil
DVMODNPE50
N
PE
DEHNgap
DGPM2
55
9
DEHNbloc
DBM1
255
N/PE(N)
L/N
DEHNbloc
DBM1
255
N/PE(N)
L/N
DEHNbloc
DBM1
255
N/PE(N)
L/N
L1L2 L3 N
3 x DB M 1 255 Part No. 961 1201 x DGP M 255 Part No. 961 1011 x MVS 1 8 Part No. 900 611
1 x DV M TT 255 FM Part No. 951 315
alt. 1 x DV M TT 255 Part No. 951 310
1315 A
L1L2L3N PE
16 A
SocketOutlet
1 x DSA 230 LA Part No. 924 370 1 x STC 230 Part No. 924 350
with remote signalling contact:1 x DG M TT 275 FM Part No. 952 315
1125 A 1125 A
1 x DG M TT 275 Part No. 952 310
MainDistributionBoard
SubdistributionBoard
1 x DFL M 255 Part No. 924 396
RCD
1315 A
1 x DB 3 255 H Part No. 900 120alt. 3 x DB 1 255 H Part No. 900 222
1 x DGP BN 255 Part No. 900 1321 x DK 25 Part No. 952 6991 x MVS 1 2 Part No. 900 617
L1 L1 L2 L2 L3 L3
N /PE N N/PEN
DEHNbloc DB 3 255 HDEHNgap B/nDGP BN 255
1315 A
Fee
d-T
hroug
h
Termina
l
DK25
Cable length 15 m
SPD Type 1(Lightning current arrester)
DEHNbloc MCoordinated to DEHNguard
without additional cable length.
SPD Type 1(Coordinated lightning
current arrester)
DEHNventil
Directly coordinated toRed/Line SPDs Type 2 and 3
without additional cable length.
For serial connection please see also page 21
SPD Type 1(Combined lightning current
and surge arrester)
indication of interference
SPD Type 2
(Surge arrester)
SPD Type 2
(Surge arrester)
indication
ofinterference
TT systems: Example: Office Building
Easy Choice
22
AccessoriesSurge Arresters
Type 3Surge Arresters
Type 2N-PE Lightning Current
Arresters Type 1Lightning CurrentArresters Type 1
Combined SPDs Type 1
Arrangement I Arrangement II Arrangement III
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POWER SUPPLY SYSTEMS
www.dehn.de
DEHNguard
DGMOD275
DEHNguard
DGMOD275
L1 L2
PE
DEHNguard
DGMOD275
L3 N
DEHNguard
DGMODNPE
9
DEHNguard
DGMOD275
DEHNguard
DGMOD275
L1 L2
PE
DEHNguard
DGMOD275
L3 N
DEHNguard
DGMODNPE
9
DEHNgapBNHDGPB NH00 N 255
DEHNventil
DVMOD255
L1 L1 L2 L2
PE
L3 L3 N
9
DEHNventil
DVMOD255
DEHNventil
DVMOD255
DEHNventil
DVMODNPE50
DEHNbloc
DBM1
255FM
N/PE(N)
L/N
DEHNbloc
DBM1
255FM
N/PE(N)
L/N
DEHNbloc
DBM1
255FM
N/PE(N)
L/N
N
PE
DEHNgap
DGPM2
55FM
9
DEHNrail
DRM2P255FM
4 3
2 1
9
9
NETZFILTER
L L N NOUT
L L N NIN9 9
9 9
DEHN SPD
SPS PRO
function
OUT / FM
99 / IN
DEHNrail
DRM4
P255FM
L1 L2 L3 N 9
L1 L2 L3 N 9
L1L2L3 N
3 x DB NH00 255 H Part No. 900 2731 x DGP B NH00 N 255 Part No. 900 269
1315 A
1 x DV M TT 255 FM Part No. 951 315
alt. 1 x DV M TT 255 Part No. 951 310
1315 A
3 x DB M 1 255 FM Part No. 961 1251 x DGP M 255 FM Part No. 961 1051 x MVS 1 8 Part No. 900 611
1315 A
L1L2L3N PE
32 A
EBB
with remote signalling contact:1 x DG M TT 275 FM Part No. 952 315
1125 A 1125 A
1 x DG M TT 275 Part No. 952 310
MainDistributionBoard
SubdistributionBoard
13 A
1 x SPS PRO Part No. 912 253 1 x DR M 4P 255 FM Part No. 953 405alt. 1 x DR M 4P 255 Part No. 953 400
125 A
1 x DR M 2P 255 FM Part No. 953 2051 x NF 10 Part No. 912 254
110 A
Switchgear/Machine
SPS SPS
RCD
Cablelength5m
SPD Type 2(Surge arrester)
SPD Type 2(Surge arrester)
SPD Type 1(Combined lightning current
and surge arrester)
SPD Type 3(Surge arrester)
SPD Type 3(Surge arrester)
SPD Type 3(Surge arrester)
DEHNventil
Directly coordinated toRed/Line SPDs Type 2 and 3
without additional cable length.
For serial connection please see also page 21
SPD Type 1(Coordinated lightning
current arrester)
DEHNbloc MCoordinated to DEHNguard
without additional cable length.
indication
ofinterference
SPD Type 1(Lightning current arrester)
electronicequipment
indication
ofinterference
indication of interference
1) Only required, if a fuse of the same or a lower nominal value is not already provided in the upstream power supply.
N
DEHNbloc NHDB NH00 255 H
DEHNbloc NHDB NH00 255 H
DEHNbloc NHDB NH00 255 H
Cable length 15 m
indication
ofinterference
25 A alsopermissiblewithout NF 10
TT systems: Example: Industry
Easy Choice
23
AccessoriesSurge Arresters
Type 3Surge Arresters
Type 2N-PE Lightning Current
Arresters Type 1Lightning CurrentArresters Type 1
Combined SPDs Type 1
Arrangement I Arrangement II Arrangement III
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POWER SUPPLY SYSTEMS
www.dehn.de24
AccessoriesSurge Arresters
Type 3Surge Arresters
Type 2N-PE Lightning Current
Arresters Type 1Lightning CurrentArresters Type 1
Combined SPDs Type 1
Easy Choice
DEHNguard
DGS440FM
DEHNguard
DGS440FM
DEHNguard
DGS440FM
N/PEN
L
DEHNbloc
Maxi
DBM1
440FM
N/PEN
L
DEHNbloc
Maxi
DBM1
440FM
N/PEN
L
DEHNbloc
Maxi
DBM1
440FM
L
DEHNbloc
Maxi
DBM1
760FM
L1 L2 L3 PEN
3 x DG S 440 FM Part No. 952 0951 x MVS 1 3 Part No. 900 615
125 A
EBB
250 A
3 x DBM 1 440 FM Part No. 961 145
alt. 3 x DBM 1 440 Part No. 961 1401 x EB DG 1000 1 3 Part No. 900 411
L1 L2 L3 PEN
SPD Type 2(Surge arrester)
indication
ofinterference
SPD Type 1(Coordinated lightning
current arrester)
indication
ofinterference
1 x EB DG 1000 1 3 Part No. 900 411
TN systems: Industry TN-C 400/690 V IT systems: Industry IT 690 V, without integrated neutral conductor
N/PEN
L
DEHNbloc
Maxi
DBM1
760FM
N/PEN
L
DEHNbloc
Maxi
DBM1
760FM
N/PEN
L
DEHNbloc
Maxi
DBM1
760FM
DEHNguardDG 1000 FM
DEHNguardDG 1000 FM
DEHNguardDG 1000 FM
L1 L2 L3 PE
3 x DBM 1 760 FM Part No. 961 1751 x EB DG 1000 1 3 Part No. 900 411
3 x DG 1000 FM Part No. 950 1121 x EB DG 1000 1 3 Part No. 900 411
100 A aM
250 A
L1 L2 L3 PE
SPD Type 2(Surge arrester)
SPD Type 1(Coordinated lightning
current arrester)
indication
ofinterference
indica
tion
ofinterference
EBB
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POWER SUPPLY SYSTEMS
www.dehn.de 25
AccessoriesSurge Arresters
Type 3Surge Arresters
Type 2N-PE Lightning Current
Arresters Type 1Lightning CurrentArresters Type 1
Combined SPDs Type 1
Easy Choice
L1L2L3N PE
DEHNguard
DGMODCI
275
DEHNguard
L1 L2
PE
DEHNguard
L3
DEHNguard
DGMOD275
N
9
L1 L2 L3 PEN
DEHNbloc
DBM1
255FM
N/PE(N)
L/N
DEHNbloc
DBM1
255FM
N/PE(N)
L/N
DEHNbloc
DBM1
255FM
N/PE(N)
L/N
DEHNflex
16 A
SocketOutlet
with remote signalling contact:1 x DG M TNS CI 275 FM Part No. 952 406
3 x DB M 1 255 FM Part No. 961 1251 x MVS 1 6 Part No. 900 815
alt. 3 x DB M 1 255 Part No. 961 1201 x MVS 1 6 Part No. 900 815
MainDistributionBoard
SubdistributionBoard
1 x DFL M 255 Part No. 924 396for flush-mounted systems
1315 A
Cablelength5m
SPD Type 3(Surge arrester)
SPD Type 2(Surge arrester)
indication
ofinterference
indication
ofinterference
EBB
1) Only required, if a fuse of the same or alower nominal value is not alreadyprovided in the upstream power supply.
SPD Type 1(Coordinated lightning
current arrester)
DEHNbloc MCoordinated to DEHNguard
without additional cable length.
DGMODCI
275
DGMODCI
275
IK 25 kA
TN systems TT systems
for flush-mounted systems
Cablelength5m
SPD Type 3(Surge arrester)
EBB
L1 L2
PE
L3 N
DEHNguard
DGMODNPE
9
DEHNflex
N
PE
DEHNgap
DGPM2
55
9
DEHNbloc
DBM1
255
N/PE(N)
L/N
DEHNbloc
DBM1
255
N/PE(N)
L/N
DEHNbloc
DBM1
255
N/PE(N)
L/N
L1L2 L3 N
3 x DB M 1 255 Part No. 961 1201 x DGP M 255 Part No. 961 1011 x MVS 1 8 Part No. 900 611
L1L2L3N PE
16 A
SocketOutlet
with remote signalling contact:1 x DG M TT CI 275 FM Part No. 952 327
MainDistributionBoard
SubdistributionBoard
1 x DFL M 255 Part No. 924 396
RCD
1315 A
DEHNbloc MCoordinated to DEHNguard
without additional cable length.
SPD Type 1(Coordinated lightning
current arrester)
SPD Type 2
(Surge arrester)
indication
ofinterference
DEHNguard
DGMODCI
275
DEHNguard
DEHNguard
DGMODCI
275
DGMODCI
275
1) Only required, if a fuse of the same or alower nominal value is not alreadyprovided in the upstream power supply.I
K 25 kA
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AccessoriesSurge Arresters
Type 3Surge Arresters
Type 2N-PE Lightning Current
Arresters Type 1Lightning CurrentArresters Type 1
Combined SPDs Type 1
Easy Choice of SPDs for Use in Photovoltaic Systems
d.c. arresters
1
5Type 1 combined lightning currentand surge arrester for use in photo-voltaic systems
DLM PV 1000 Part No. 900 330
a.c. arresters
Modular surge arrester for use in single-phase230 V TN power supply systems
DG M TN 275 Part No. 952 200DG M TN 275 FM Part No. 952 205
2Modular surge arrester for use in single-phase230 V TT power supply systems
DG M TT 2P 275 Part No. 952 110DG M TT 2P 275 FM Part No. 952 115
2
Multipole combined lightning current and surgearrester for use in three-phase power supply sys-tems
DV M TNC 255 Part No. 951 300DV M TNC 255 FM Part No. 951 305
DV M TNS 255 Part No. 951 400DV M TNS 255 FM Part No. 951 405
DV M TT 255 Part No. 951 310DV M TT 255 FM Part No. 951 315
3
Modular combined lightning current and surgearrester for use in single-phase TN power supplysystems
DV M TN 255 Part No. 951 200DV M TN 255 FM Part No. 951 205
4 Modular combined lightning current and surgearrester for use in single-phase TT and TN-S powersupply systems
DV M TT 2P 255 Part No. 951 110DV M TT 2P 255 FM Part No. 951 115
4
Modular multipole surge arrester for use in three-phase power supply systems
DG M TNC 275 Part No. 952 300DG M TNC 275 FM Part No. 952 305
DG M TNS 275 Part No. 952 400DG M TNS 275 FM Part No. 952 405
DG M TT 275 Part No. 952 310DG M TT 275 FM Part No. 952 315
6
Modular surge arrester as complete unit for use inphotovoltaic systems
DG M YPV SCI 600 Part No. 952 511DG M YPV SCI 600 FM Part No. 952 516
DG M YPV SCI 1000 Part No. 952 510DG M YPV SCI 1000 FM Part No. 952 515
DG M YPV SCI 1200 Part No. 952 512DG M YPV SCI 1200 FM Part No. 952 517
max. PV voltage unearthed / functionally earthed
up to 600 V d.c. Part No. 952 511 (952 516)
up to 1000 V d.c. Part No. 952 510 (952 515)
up to 1200 V d.c. Part No. 952 512 (952 517)
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PV system on a building with external lightning protection system.
27
AccessoriesSurge Arresters
Type 3Surge Arresters
Type 2N-PE Lightning Current
Arresters Type 1Lightning CurrentArresters Type 1
Combined SPDs Type 1
Equipotential bonding
For lightning and surge protection reasons, it is strongly recommended toconnect the PV frame as follows to the equipotential bonding system:
Defined connection with at least 16 mm2 copper at the PV frame (b).
Defined connection with at least 6 mm2 copper at the PV frame(a + c).
Electrically conductive connection of the PV frames has to be ensured.
The earth conductor is connected to the main earthing busbar of thebuilding on ground level.
The earth conductor has to be installed in parallel and in close proxi-mity to the d.c. and a.c. cables / lines and accessory.
kWh kWh
s
s
=
~
SEB
a.c.output
d.c. input
meter/distribution board
power supply
s12
3
separationdistance OK
6
SEB
kWh kWh
power supply
< s< s
=
~
54
3
< s
a.c.output
d.c. input
meter/distribution board
separationdistancenot OK
3
kWh kWh
=
~
SEB
a.c.output
d.c. input
meter/distribution board
power supply
12
6
6
Easy Choice of SPDs for Use in Photovoltaic Systems
a) if the separation distance s is observed b) if the separation distance s is not observed
PV system on a building without external lightning protection system.
c)
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Power Supply Systems Worldwide
L1
L2
L3
PEN
RB
L1
L2
L3
N
RB
PE
L1
L2
L3
N
PE
RB
TN-C system TN-S system
L1
L2
L3
N
RB RA
PE
L1
L2
L3
RA
PE
TN-C system 230 / 400 V
TN-S system 230 / 400 V
TN-C-S system 230 / 400 V
TT system 230 / 400 V IT system 230 V, 400 V, 500 V, 690 V
L
N
G
L1
N
GL2
L1
G
L2
L3
L1
G
L2L3
N
L1
G
L2
L3
N
L1
G
L2
L3
L1
G
L2
L3
single-phase; 3 conductors
(1 Ph, 2 W + G)
110 V120 V220 V240 V
single-phase; 4 conductorsSplit Phase or Edison
(1 Ph, 3 W + G)
120 V / 240 V
3-phase; 4 conductors
(3 Ph Y, 3 W + G)
480 V
3-phase; 5 conductors
(3 Ph Y, 4 W + G)
120 V / 208 V277 V / 480 V
3-phase; 5 conductorsDelta Highleg
(3 Ph , 4 W + G)
120 V / 240 V
3-phase; 4 conductorsDelta Ungrounded
(3 Ph , 3 W + G)
240 V480 V
3-phase; 4 conductorsDelta Grounded Corner
(3 Ph , 3 W + G)
240 V480 V
R
N
100 V
R
T
200 V
R
N
100 V
100 V
200 V
T
single-phase; 2 conductors
(1 Ph, 2 W)
200 V
single-phase; 3 conductors
(1 Ph, 3 W)
100 V / 200 V
single-phase; 2 conductors
(1 Ph, 2 W)
100 V
R
S
200 V
200 V
200 V
T
R
S
100 V
100 V200 V
T
N200 V
200 V
3-phase; single-phase;
3 conductors+
3 conductors
100 V / 200 V; 200 V
3-phase; 3 conductors
(3 Ph, 3 W)
200 V
International system configurations* according to IEC 60364-1 (DIN VDE 0100-100)
Further system configurations* used worldwide
* System according to earth connection (according to DIN VDE 0100-100)
POWER SUPPLY SYSTEMS
www.dehn.de28
AccessoriesSurge Arresters
Type 3Surge Arresters
Type 2N-PE Lightning Current
Arresters Type 1Lightning CurrentArresters Type 1
Combined SPDs Type 1
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POWER SUPPLY SYSTEMS
www.dehn.de 29
AccessoriesSurge Arresters
Type 3Surge Arresters
Type 2N-PE Lightning Current
Arresters Type 1Lightning CurrentArresters Type 1
Combined SPDs Type 1
Cross-reference
Combined SPDs Type 1
900 370 DV 2P TT 255 951 110 DV M TT 2P 255 or951 115 DV M TT 2P 255 FM
900 371 DV 2P TN 255 951 200 DV M TN 255 or951 205 DV M TN 255 FM
900 373 DV TNC 255 951 300 DV M TNC 255 or951 305 DV M TNC 255 FM
900 374 DV TNS 255 951 400 DV M TNS 255 or951 405 DV M TNS 255 FM
900 375 DV TT 255 951 310 DV M TT 255 or951 315 DV M TT 255 FM
Coordinated Lightning Current Arresters Type 1
900 015 DBM 1 135 961 110 DB M 1 150 or961 115 DB M 1 150 FM
900 016 DBM 1 320 961 130 DB M 1 320 or961 135 DB M 1 320 FM
900 025 DBM 1 255 961 120 DB M 1 255
900 026 DBM 1 255 L 961 125 DB M 1 255 FM
900 044 DBM 440 961 140 DBM 1 440 or961 145 DBM 1 440 FM
900 055 DGPM 255 961 101 DGP M 255 or961 105 DGP M 255 FM
Lightning Current Arresters Type 1
900 100 DP 255 961 120 DB M 1 255 or900 222 DB 1 255 H
900 101 DP 440 961 140 DBM 1 440 or900 159 DB 1 440
900 110 DB 3 255 900 120 DB 3 255 H
900 111 DB 1 255 900 222 DB 1 255 H
900 260 DB NH00 255 900 273 DB NH00 255 H
Surge Arresters Type 2
900 133 DGP C T 255 952 030 DGP C S or952 035 DGP C S FM
900 265 V NH1 3 900 270 V NH1 280
900 266 VA NH1 3 900 271 VA NH1 280
900 506 DG TN 230 952 200 DG M TN 275
900 507 DG TN 230 FM 952 205 DG M TN 275 FM
900 508 DG TT 230 952 110 DG M TT 2P 275
900 509 DG TT 230 FM 952 115 DG M TT 2P 275 FM
900 510 DG TNC 230 400 952 300 DG M TNC 275
900 516 DG IT 500 952 302 DG M WE 600
900 517 DG Y PV 1000 952 510 DG M YPV SCI 1000952 511 DG M YPV SCI 6002x 950 500 2x DG PV 500 SCP
900 520 DG TT 230 400 952 310 DG M TT 275
900 530 DG TNS 230 400 952 400 DG M TNS 275900 540 DG TNC 230 400 FM 952 305 DG M TNC 275 FM
900 546 DG IT 500 FM 952 307 DG M WE 600 FM
900 547 DG Y PV 1000 FM 952 515 DG M YPV SCI 1000 FM952 516 DG M YPV SCI 600 FM2x 950 505 2x DG PV 500 SCP FM
900 550 DG TT 230 400 FM 952 315 DG M TT 275 FM
900 560 DG TNS 230 400 FM 952 405 DG M TNS 275 FM
900 600 DG 275 952 070 DG S 275
900 601 DG 600 952 076 DG S 600
900 602 DG 385 952 074 DG S 385
900 603 DG 150 952 072 DG S 150
900 604 DG 75 952 071 DG S 75
900 605 DG 320 952 073 DG S 320
900 607 DG 440 952 075 DG S 440
900 620 DG 275 FM 952 090 DG S 275 FM
900 621 DG 600 FM 952 096 DG S 600 FM
900 622 DG 385 FM 952 094 DG S 385 FM
900 623 DG 150 FM 952 092 DG S 150 FM
900 624 DG 75 FM 952 091 DG S 75 FM
900 625 DG 320 FM 952 093 DG S 320 FM
900 627 DG 440 FM 952 095 DG S 440 FM
900 641 DG T 385 952 074 DG S 385
900 650 DG T 275 952 070 DG S 275
900 651 DG T 600 952 076 DG S 600900 652 DG T 320 952 073 DG S 320
900 653 DG T 150 952 072 DG S 150
900 654 DG T 75 952 071 DG S 75
900 655 DG T 440 952 075 DG S 440
900 659 DG T 275 VA 952 082 DG S 275 VA
900 667 DG T 75 VA 952 080 DG S 75 VA
900 680 DG T 275 FM 952 090 DG S 275 FM
900 681 DG T 600 FM 952 096 DG S 600 FM
900 682 DG T 320 FM 952 093 DG S 320 FM
900 683 DG T 150 FM 952 092 DG S 150 FM
900 684 DG T 75 FM 952 091 DG S 75 FM
900 685 DG T 440 FM 952 095 DG S 440 FM
900 689 DG T 275 VA FM 952 087 DG S 275 VA FM900 691 DG T 385 FM 952 094 DG S 385 FM
900 692 DG T 75 VA FM 952 085 DG S 75 VA FM
901 000 VAV 1000 950 102 DG 1000 or950 112 DG 1000 FM
902 375 VA NH00 280 3 IG FM
902 376 VA NH00 280 4 IG FM
902 385 VA NH00 280 3 IG
902 386 VA NH00 280 4 IG
950 220 DG T 48 952 078 DG S 48
950 225 DG T 48 FM 952 098 DG S 48 FM
Surge Arresters Type 3
901 100 DR 230 FML 953 205 DR M 2P 255 FM or
953 200 DR M 2P 255901 101 DR 120 FML 953 209 DR M 2P 150 FM or
953 204 DR M 2P 150
901 102 DR 60 FML 953 208 DR M 2P 75 FM or953 203 DR M 2P 75
901 103 DR 48 FML 953 207 DR M 2P 60 FM or953 202 DR M 2P 60
901 104 DR 24 FML 953 206 DR M 2P 30 FM or953 201 DR M 2P 30
901 130 DR 230 3N FML 953 405 DR M 4P 255 FM or953 400 DR M 4P 255
909 820 SF PRO 909 240 DPRO 230 F
909 821 S PRO 909 230 DPRO 230
Mains Connection Boxes
900 964 NAK 63A 4 951 400 DV M TNS 255
900 965 NAK 63A 3 951 300 DV M TNC 255
900 966 NAK 35A 4 951 400 DV M TNS 255
900 967 NAK 35A 3+1 951 310 DV M TT 255
900 968 NAK 35A 3 951 300 DV M TNC 255
900 969 NAK 63A 3+1 951 310 DV M TT 255
902 492 NAK TAB 3 900 390 DV ZP TNC 255
902 493 NAK TAB 3+1 900 391 DV ZP TT 255
902 494 NAK TAB 4 900 391 DV ZP TT 255
Accessories
900 309 IGA 10 IP54 902 315 IGA 10 V2 IP54
902 480 IGA 10 IP55 902 315 IGA 10 V2 IP54
900 121 DBR 35
900 122 DBR 63
900 699 DK 35 952 699 DK 25
Isolating Spark Gaps
923 070 EXFS C1 923 100 EXFS 100
923 071 EXFS C1 KU 923 101 EXFS 100 KU
Discontinued Products AlternativesPart No. Type Part No. Type
Discontinued Products AlternativesPart No. Type Part No. Type
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POWER SUPPLY SYSTEMS
www.dehn.de30
AccessoriesSurge Arresters
Type 3Surge Arresters
Type 2N-PE Lightning Current
Arresters Type 1Lightning CurrentArresters Type 1
Combined SPDs Type 1
www.dehn.de
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POWER SUPPLY SYSTEMS
COMBINED SPDs TYPE 1
31www.dehn.de
AccessoriesSurge Arresters
Type 3Surge Arresters
Type 2N-PE Lightning Current
Arresters Type 1Lightning CurrentArresters Type 1
Combined SPDsType 1
Combine
dSPDsType1
DEHNventil modular
Multipole modular combined lightning current andsurge arresterSPD Type 1 according to EN 61643-11
SPD Class I according to IEC 61643-1
Prewired spark-gap-based combined lightningcurrent and surge arrester, consisting of a basepart and plug-in protection modules
Maximum system availability due to RADAXFlow follow current limitation
No tripping of 20 A gL/gG fuses up to short-cir-cuit currents of 50 kArms
Discharge capacity up to 100 kA (10/350 s)
Protection of terminal devices
Operating state/fault indication by indicatorflag in the inspection window
Easy replacement of protection modules with-out tools due to module locking system withmodule release button
Vibration- and shock-tested according to EN60068-2
For protecting low-voltage consumers installations against surges andeven direct lightning strikes. For installation in conformity with the light-ning protection zones concept at the boundaries from 0A 2.
With their functional Red/Line design, the devices of the modularDEHNventil family combine safety and innovation. Designed for all-in-one installation, the SPDs integrate lightning equipotential bonding andprotection against surges in a single device.This function is particularly ofadvantage in compact electrical installations. The design of the SPDsaccording to energy coordination criteria even allows protection of termi-
nal devices if they are close to the consumers ( ) 5 m). With their light-ning current discharge capacity up to 100 000 A, the SPDs ensure highavailability of the electrical installation to be protected. Even for expand-ed electrical installations, the modular DEHNventil devices offer variousapplication possibilities. Red/Line surge arresters installed at the bound-aries of the individual lightning protection zones are already energy-coor-dinated with DEHNventil devices. By using encapsulated creepage dis-charge spark gaps, combined with a compact design, DEHNventil unitsare well suited for use in switchgear installations or distribution boards.A special feature of the new modular DEHNventil family is its functionaldesign.The module release button is a key element. It ensures reliable fix-ation of the protection module to keep the safe connection to the basepart even in case of maximum loads. If protection modules have to bereplaced, the module is released without tools and can be removed easi-ly.The devices incorporate double terminals which are suitable for all con-ductors, allowing series connection in a space- and cost-effective wayaccording to IEC 60364-5-53 requirements for nominal currents up to125 A. For connecting further DIN rail mounted devices, busbars of type
MVS 3 8 6 and MVS 4 11 8 can beused. The right DEHNventil devicescan be easily chosen according tothe system configuration of thelow-voltage consumers installa-tion and type designation of the
device.
The patented RADAX Flow technol-ogy ensures follow current limita-tion and extinction as well as max-imum system availability of electri-cal installations to be protected. Even in case of short-circuit currents ashigh as 50 kArms, mains follow currents are reduced in such a way thatthere is a selectivity to lower fuse values, i.e. upstream fuses will not tripdue to arising mains follow currents.
The operating state/fault indication of each protective circuit immediate-ly provides information on the operating state of the surge arrester evenif no operating current is present. Apart from the standard green and redindicator, DEHNventil M ... FM devices feature a three-pole terminal forremote signalling.With their floating changeover contact, the remote sig-nal can be used as a break or make contact according to the particular cir-cuit concept.
DEHNventil M TNC 255: Modular combined lightning current and surge arrester for use in TN-C systems
DEHNventil M TNS 255: Modular combined lightning current and surge arrester for use in TN-S systems
DEHNventil M TT 255: Modular combined lightning current and surge arrester for use in TT and TN-S systems
(3+1 circuit)DEHNventil M TN 255: Modular combined lightning current and surge arrester for use in single-phase TN systems
DEHNventil M TT 2P 255: Modular combined lightning current and surge arrester for use in single-phase TT and TN systems(1+1 circuit)
DEHNventil M ... FM: With remote signalling contact for monitoring device (floating changeover contact)
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POWER SUPPLY SYSTEMS
COMBINED SPDs TYPE 1
32 www.dehn.de
AccessoriesSurge Arresters
Type 3Surge Arresters
Type 2N-PE Lightning Current
Arresters Type 1Lightning CurrentArresters Type 1
Combined SPDsType 1
DEHNventil modular
DEHNventil M TNC (FM)951 300 DV M
TNC255
951 305 DV M
TNC255FM
DVM TN C2 5 5
951 300
DVM TN C2 5 5 FM
951 305
12
1114
L2 L2
PEN
L1 L1 L3 L3
Basic circuit diagram DV M TNC 255 FM Dimension drawing DV M TNC 255 (FM)
DV M TNC 255 (FM): Modular combined lightning current and surge arrester for protecting TN-Csystems against surges
DV M TNC 255 DV M TNC 255 FM
SPD according to EN 61643-11 / ... IEC 61643-1 Type 1 / Class I Type 1 / Class I
Energy-coordinated protection effect with
regard to the terminal equipment Type 1 + Type 2 Type 1 + Type 2
Energy-coordinated protection effect with
regard to the terminal equipment ( ) 5m) Type 1 + Type 2 + Type 3 Type 1 + Type 2 + Type 3
Nominal a.c. voltage UN 230 / 400 V 230 / 400 V
Max. continuous operating a.c. voltage UC 255 V 255 V
Lightning impulse current (10/350 s) [L1+L2+L3-PEN] Itotal 75 kA 75 kA
Lightning impulse current (10/350 s) [L-PEN] Iimp 25 kA 25 kA
Nominal discharge current (8/20 s) In 25 / 75 kA 25 / 75 kA
Voltage protection level UP ) 1.5 kV ) 1.5 kV
Follow current extinguishing capability a.c. Ifi 50 kArms 50 kArms
Follow current limitation/Selectivity no tripping of a 20 A gL/gG fuse up to 50 kA rms (prosp.) no tripping of a 20 A gL/gG fuse up to 50 kArms (prosp.)
Response time tA ) 100 ns ) 100 ns
Max. backup fuse (L) up to IK = 50 kArms 315 A gL/gG 315 A gL/gG
Max. backup fuse (L) for IK > 50 kArms 200 A gL/gG 200 A gL/gG
Max. backup fuse (L-L) 125 A gL/gG 125 A gL/gG
Temporary overvoltage (TOV) UT 440 V / 5 sec. 440 V / 5 sec.
TOV characteristics withstand withstand
Operating temperature range [parallel]/[continuity] TU -40C...+80C / -40C...+60C -40C...+80C / -40C...+60C
Operating state/fault indication green / red green / red
Cross-sectional area (L1, L1 , L2, L2 , L3, L3 , PEN,9) min. 10 mm2 solid/flexible 10 mm2 solid/flexible
Cross-sectional area (L1, L2, L3, PEN) max. 50 mm2 stranded/35 mm2 flexible 50 mm2 stranded/35 mm2 flexible
Cross-sectional area (L1 , L2, L3,9) max. 35 mm2 stranded/25 mm2 flexible 35 mm2 stranded/25 mm2 flexible
For mounting on 35 mm DIN rail acc. to EN 60715 35 mm DIN rail acc. to EN 60715
Enclosure material thermoplastic, red, UL 94 V-0 thermoplastic, red, UL 94 V-0
Degree of protection IP 20 IP 20Capacity 6 mods., DIN 43880 6 mods., DIN 43880
Approvals, Certifications KEMA,VDE, UL,VdS KEMA, VDE,UL, VdS
Type of remote signalling contact changeover contact
Switching capacity a.c. 250 V/0.5 A
Switching capacity d.c. 250 V/0.1 A; 125 V/0.2 A; 75 V/0.5 A
Cross-sectional area for remote signalling terminals max. 1.5 mm2 solid/flexible
Ordering information
Type DV M TNC 255 DV M TNC 255 FM
Part No. 951 300 951 305
Packing unit 1 pc(s). 1 pc(s).
Accessory part for DEHNventil modular
Spark-gap-based protection modulePU Part
Type pc(s). No.
DV MOD 255 1 951 001
951 001 DV MOD
255
DVM O D2 5 5
951 001
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POWER SUPPLY SYSTEMS
COMBINED SPDs TYPE 1
33www.dehn.de
AccessoriesSurge Arresters
Type 3Surge Arresters
Type 2N-PE Lightning Current
Arresters Type 1Lightning CurrentArresters Type 1
Combined SPDsType 1
Combine
dSPDsType1
DEHNventil modular
DEHNventil M TNS (FM)DV M TNS
DV M TNS
12
1114
L2 L2 N N
PE
L1 L1 L3 L3
Basic circuit diagram DV M TNS 255 FMDimension drawing DV M TNS 255 (FM)
DV M TNS 255 (FM): Modular combined lightning current and surge arrester for protecting TN-Ssystems against surges
DV M TNS 255 DV M TNS 255 FM
SPD according to EN 61643-11 / ... IEC 61643-1 Type 1 / Class I Type 1 / Class I
Energy-coordinated protection effect with
regard to the terminal equipment Type 1 + Type 2 Type 1 + Type 2
Energy-coordinated protection effect with
regard to the terminal equipment ( ) 5m) Type 1 + Type 2 + Type 3 Type 1 + Type 2 + Type 3
Nominal a.c. voltage UN 230 / 400 V 230 / 400 V
Max. continuous operating a.c. voltage UC 255 V 255 V
Lightning impulse current (10/350 s) [L1+L2+L3+N-PE] Itotal 100 kA 100 kA
Lightning impulse current (10/350 s) [L, N-PE] Iimp 25 kA 25 kA
Nominal discharge current (8/20 s) In 25 / 100 kA 25 / 100 kA
Voltage protection level [L-PE]/[N-PE] UP ) 1.5 kV / ) 1.5 kV ) 1.5 kV / ) 1.5 kV
Follow current extinguishing capability a.c. Ifi 50 kArms 50 kArms
Follow current limitation/Selectivity no tripping of a 20 A gL/gG fuse up to 50 kA rms (prosp.) no tripping of a 20 A gL/gG fuse up to 50 kArms (prosp.)
Response time tA ) 100 ns ) 100 ns
Max. backup fuse (L) up to IK = 50 kArms 315 A gL/gG 315 A gL/gG
Max. backup fuse (L) for IK > 50 kArms 200 A gL/gG 200 A gL/gG
Max. backup fuse (L-L) 125 A gL/gG 125 A gL/gG
Temporary overvoltage (TOV) [L-N] UT 440 V / 5 sec. 440 V / 5 sec.
TOV characteristics withstand withstand
Operating temperature range [parallel]/[continuity] TU -40C...+80C / -40C...+60C -40C...+80C / -40C...+60C
Operating state/fault indication green / red green / red
Cross-sectional area (L1, L1 , L2, L2 , L3, L3 , N, N, PE,9) min. 10 mm2 solid/flexible 10 mm2 solid/flexible
Cross-sectional area (L1, L2, L3, N, PE) max. 50 mm2 stranded/35 mm2 flexible 50 mm2 stranded/35 mm2 flexible
Cross-sectional area (L1, L2, L3, N,9) max. 35 mm2 stranded/25 mm2 flexible 35 mm2 stranded/25 mm2 flexible
For mounting on 35 mm DIN rail acc. to EN 60715 35 mm DIN rail acc. to EN 60715
Enclosure material thermoplastic, red, UL 94 V-0 thermoplastic, red, UL 94 V-0
Degree of protection IP 20 IP 20Capacity 8 mods., DIN 43880 8 mods., DIN 43880
Approvals, Certifications KEMA, VDE, UL,VdS KEMA, VDE,UL, VdS
Type of remote signalling contact changeover contact
Switching capacity a.c. 250 V/0.5 A
Switching capacity d.c. 250 V/0.1 A; 125 V/0.2 A; 75 V/0.5 A
Cross-sectional area for remote signalling terminals max. 1.5 mm2 solid/flexible
Ordering information
Type DV M TNS 255 DV M TNS 255 FM
Part No. 951 400 951 405
Packing unit 1 pc(s). 1 pc(s).
Accessory part for DEHNventil modular
951 001 DV MOD
255
DV MOD 255 Kombi-
Able it er- Schutzmodul 951 001
Spark-gap-based protection modulePU Part
Type pc(s). No.
DV MOD 255 1 951 001
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POWER SUPPLY SYSTEMS
COMBINED SPDs TYPE 1
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AccessoriesSurge Arresters
Type 3Surge Arresters
Type 2N-PE Lightning Current
Arresters Type 1Lightning CurrentArresters Type 1
Combined SPDsType 1
DEHNventil modular
DEHNventil M TT (FM)951 310 DV M TT
255
951 315 DV M TT
255FM
DVM TT2 5 5
951 310
DVM TT2 5 5 FM
951 315
12
1114
L2 L2 N N
PE
L1 L1 L3 L3
NPE
Basic circuit diagram DV M TT 255 FM Dimension drawing DV M TT 255 (FM)
DV M TT 255 (FM): Mod