ue dehn (u.k.) ltd - caltechold.caltech.ie/pdf/dehn_redline_presentation.pdf · s659/3e 659-3e.ppt...

© copyright DEHN + SÖHNE

UE DEHN (U.K.) LTD

WelcomeWelcome

To our

REDLINE SEMINAR

Lightning/Surge Protection in energy technical networks


UE DEHN + SÖHNE

• Founded in 1910 as Electrical Contracting Company

• Start of Production of Lightning Protection Components in the 1920s

• Development of the First In-Door Surge Arrester in 1954

• International Market Leading Company in Lightning and Surge Protection

• Founded in 1910 as Electrical Contracting Company

• Start of Production of Lightning Protection Components in the 1920s

• Development of the First In-Door Surge Arrester in 1954

• International Market Leading Company in Lightning and Surge Protection


UE DEHN + SÖHNE

Today:

• Family-Owned Company in Third Generation

• £100 million Turnover

Human Resources:

• More than 1000 employees in Production, R&D, Marketing & Sales

Today:

• Family-Owned Company in Third Generation

• £100 million Turnover

Human Resources:

• More than 1000 employees in Production, R&D, Marketing & Sales


UE DEHN + SÖHNE

Our Export-Business:

• Accounts for more than 35% of total Turnover

• Representatives all over the world inover 50 countries

•Dehn (U.K.) Ltd formed in 1996 as a wholly owned subsidiary

Our Export-Business:

• Accounts for more than 35% of total Turnover

• Representatives all over the world inover 50 countries

•Dehn (U.K.) Ltd formed in 1996 as a wholly owned subsidiary


UE

THD/URE 20.10.971564eppt

DEHN + SÖHNE

Our Products

• External Lightning Protection Components to British, European and International Standards

• L.V. Lightning/Surge Protection to protect sensitive electronic equipment

•M.V. Surge Arresters for overhead lines and indoor switchgear

• Safety Equipment H.V. Test equipment

Our Products

• External Lightning Protection Components to British, European and International Standards

• L.V. Lightning/Surge Protection to protect sensitive electronic equipment

•M.V. Surge Arresters for overhead lines and indoor switchgear

• Safety Equipment H.V. Test equipment


UE

Causes and Effectsof

Lightning and Overvoltages


UE

1. Direct Lightning Strikes

Causes of Transient Overvoltages

2. Indirect Lightning Strikes

3. Switching Events


UEDirect Lightning Damagesto a Bank in Nuremburg

S1568a 1568.ppt / 14.10.97 / OB


UE

S1568b 1568.ppt / 14.10.97 / OB


UE Lightning Strike Damages

S1568c 1568.ppt / 14.10.97 / OB


UE PCB Damages

1597.ppt / 29.01.98 / CGS1597_a


UE PCB Damages

S1597_b 1597.ppt / 29.01.98 / CG


UEDamage Report

Frankfurt Airport

S1501e

Lightning Brought Frankfurt Airport to a Standstill.Heavy thunderstorms and cloudbursts caused considerable damage to the Rhine-Main area on 20th June. The Frankfurt airport had been broughthad been brought to ato astandstill for almost two hoursstandstill for almost two hours due to a lightning strokelightning stroke into the TowerTower. At3.45 p.m. a lightning hit the tower. The electronic system did no longer function. The automatic fire extinguishing system which removes oxygen from the air started up.

Therefore, the tower had to be evacuated. At 5.18 p.m. an emergency service started working again. According to the Frankfurt Airport AG, more than 4040 airplanes airplanes with Frankfurt destination hadhad toto be detouredbe detoured, mainly to Cologne and Dusseldorf, but also to Nuremberg and Berlin. Inspite of this,1717 taketake--offs and landings offs and landings had been cancelledcancelled. At 5.31 p. m. the first machine took off again.

Ref.: etz Bd. 113 (1992) Heft 13 1501e.ppt / 10.09.97


UEDamage reasons 2005 (indemnities)

Analysis of more than 9 600 cases of damage

586/4 586/4e.ppt / 10.09.97 / KK

Source: Württembergische Feuerversicherung AG, Stuttgart

overvoltage 26,6%(switching operations

and lightning discharges

overvoltage 26,6%(switching operations

and lightning discharges

theft 8,9%theft 8,9%

fire 8,2%fire 8,2%water 2,6%water 2,6%carelessness 25,7%carelessness 25,7%

sundries 27,9%sundries 27,9%

storm 0,1%storm 0,1%


UE

External Lightning Protection System(Interception System, Down Conductor, Foundation

Earth Electrode)

S801e_a

Foundation earth electrode

801e_a.ppt / 09.09.97


UE Causes of Thunderstorm Overvoltages

Direct/nearby stroke:Stroke into external lightning protection system,process frame (in industrial install.), cables, etc.Voltage drop at the surge earth resistance Rst

Induced voltages in loops

Information Technology System Power Supply System

L1L2L3PEN

20 kV

Rst

2c

1a

1b

1

2a

2b1

1a

1b

Distant stroke:Stroke into the medium-voltage overhead line

Overvoltage travelling waves on overhead line due to cloud to cloud lightning

Fields of lightning channel

2a

2b

2c

S535e 535e.ppt / 04.09.97


UE

Earthing System

ExternalLightning Protection

MEB

100%

Assumed Current Distribution for a Lightning Stroke

50%

TelecommunicationSystem

Power SupplySystem

Metal Pipelines

50%


UELightning Current Distribution

(Worst Case Scenario, Three Phase System)

ServiceTransformer

25 kA per Line

External Lightning Protection

Building

200 kA

100 kA

100 kA

100 kA

25 kA each


UEThreat to Nearby Structures

due to Overvoltages

S553e

100 kA

some 10 kV some 100 kV

some kA some 10 kA

some 10 kV

Tele-comm.cable

OV

230 V~some 10 kA some kA

Water / gas

some kAsome Ωsome kAsome Ω some kAsome Ω

553e.ppt / 04.09.97

230V


UE

Current National andInternational Standardization


UE

Class I

Protection AgainstDirect Lightning

Currents(Lightning Current

Arrester)

(10/350 µs)

Class I

Protection AgainstDirect Lightning

Currents(Lightning Current

Arrester)

(10/350 µs)

IEC 61643-1Performance Requirements of Surge Protective Devices

for Low-Voltage Power Supply Systems

IEC 61643-1Performance Requirements of Surge Protective Devices

for Low-Voltage Power Supply Systems

Standardization of Surge Protective Devices

Class II

Protection AgainstIndirect Lightning

Effects(Surge Arrester)

(8/20 µs)

Class II

Protection AgainstIndirect Lightning

Effects(Surge Arrester)

(8/20 µs)

Class III

Protection AgainstSwitching

Overvoltages(Surge Arrester)

(1,2/50 µs; 8/20 µs)

Class III

Protection AgainstSwitching

Overvoltages(Surge Arrester)

(1,2/50 µs; 8/20 µs)


UELightning Protection Standardization

IEC CLC DKE

S1516e 1516e.ppt / 05.09.97

IEC 1312May 1995

BSEN623052005

British Standards Committee

IECworldwide

CLCEuropean

passed over


UE NEW EUROPEAN STANDARDS CENELEC

Mirror image of IEC standards

BSEN 62305-1 GENERAL PRINCIPLES

BSEN 62305-2 RISK MANAGEMENT

BSEN 62305-3 PHYSICAL DAMAGE TOSTRUCTURES AND LIFE HAZARD

BSEN 62305-4 ELECTRICAL & ELECTRONIC SYSTEMS

BSEN 62305-5 SERVICES


UE FORMAT

62305-1 General Principles

62305-2 Risk

62305-4Electrical & electronic systems

62305-3Physical damage &

life hazard

62305-5Services


UE

• Complex document embracing many more factors.than the BS6651 risk assessment.

• By working through series of formulae the process allows the.user to decide on what protection is required. The actual risk.(R) must be below the tolerable level (Rt).

• The ultimate protection may be the installation of an LPS.system. Direct strike lightning arresters (LEMP) and surge.arresters (SEMP).

BSEN62305-2 Risk Management


UEBSEN 62305-3

Physical damage to structures and life hazard.This part relates directly to the major part of the

old BS6651

Introduction

a) External LPS (air termination system, dc’s, earth termination system).

b) An internal LPS (preventing dangerous sparking using equipotential bonding or separation distance (hence electrical insulation) between external LPS and internal metalwork.


UEBSEN62305-3

4 Classes (Protection levels) of LPS

20 X 2060IV

10 X 1030II

15 X 1545III

5 X 520I

Mesh size (m x m)Rolling sphere radius (m)

Class of LPS

Protection method


UEBSEN62305-3

Down conductors and ring conductor spacing

20IV

15III

10II

10I

Typical distances (m)Class of LPS


UE BSEN62305-3 Maintenance and inspection of LPSConducted by an LP specialist-Maximum period between

inspections

142III & IV

121I & II

Critical systems complete inspection(year)

Complete inspection (year)

Visual inspection (year)

Protection level


UE BSEN62305-4Electrical & electronic systems within structures

Scope: Provides information for design, installation, Inspection, maintenance and testing of a LEMPprotection system (LPM) for electrical and electronic systems within a structure able to reduce risk of permanent failure due to LEMP.


UE BSEN62305-4 Basic protection measures in an LPM system

Earthing & Bonding

Magnetic shielding and line routing

Direct strike and surge protection


UE

EMC-orientedLightning Protection Zones Concept


UE

LEMPLEMP

LEMPLEMP

Intermediate floor

LPZ 2LPZ 2LPZ 2

LPZ 3LPZ 3LPZ 3

SEMPSEMP

LPZ 1LPZ 1LPZ 1

LPZ 0 ALPZ 0 LPZ 0 AA

LPZ 1LPZ 1LPZ 1

Lightning Protection Zones Concept

S659/3e 659-3e.ppt / 04.09.97

Powersupply system

Informationtechn. network

Power supply system

ü ü

ü ü

Local bonding bar

Equipment repres. shield

Room representing shield

Foundation earth electrode Steel reinforcement Lightning protection equipotential

bonding Lightning current SPD ü Local equipotential bondingOvervoltage SPD

Air condition

Air termination system

LPZ 0 BLPZ 0 LPZ 0 BB

M

ü


ü

ü

ü

Camera

Lamp

Socket

"Lightning sphere"radius 20 m


LEMPLEMP

ü ü

LPZ LPZ LPZ Lightning Protection Zone


UE

Lightning Protection EquipotentialBonding

- Power Supply System


UELightning Protection Equipotentialization

for Line Entries

ZCathodic protection of filler pipe

Foundation earth electrode

Lightning Protection EquipotentializationEBBEBB

Water

GasGas

532-3e.ppt / 08.09.97S532/3e

PS

Exte

rnal

LPS


UE

t (µs)S640e 640e.ppt / 05.11.1998 / ESC

20

40

60

80 (kA)

i

200 350 600 800 1000

11

80400

11 22i max. kA 75 15Wave Shape µs 10/350 8/20Q As 37.5 0.27W/R J/Ω 1.5·106 2.75·103

22

Test current impulse (10/350 µs) for lightning current arresters(class I);

Test current impulse (8/20 µs) for surge arresters (class II)


UE Lightning Current Parameters

S712e 712e.ppt / 04.09.97

ParametersParameters Protection LevelProtection Level

II IIII IIIIII--IVIV

Peak val. of current I (kA) 200 150 100

Spec. energy W/R (MJ/Ω) 10 5.6 2.5

Imp. charge Q Impulse (As) 100 75 50

Total charge Q Total (As) 200 150 100

Efficiency 98% 95% 80 - 90%Lit.: DIN V ENV 61024-1 (VDE V 0185 Part 100)


UE DEHNbloc® Lightning Current Arrester

Technical DataTechnical Data::

Uc 255V~

iB 50 kA (10/350) 1 pole100 kA (10/350) 2-4 pole

Usp < 4 kV (1.2/50)

Art. No. 900 222

S894e

DEHNport

894e.ppt / 09.09.97


UE Tandem-arranged Gliding Spark Gap

S1519e 1519e.ppt / 09.09.97


UE "Blowing out" of a DEHNport®

S1561e_a 1561e.ppt / 19.09.97


UEDEHNbloc® Lightning Current Arrester

Installed in TNC-S-Systems

S890e

L1L2L3NPE

F4 F6F5

Possible connection50 mm² multi-stranded

F4 - F6 ≤ 160 A gLonly required ifF1 - F3 > 315 A gL

F1F2F3

Cross-sectionalarea of conductor16 mm² ≤ 125 A25 mm² 160A

Cross-sect.area of earthing cablecorresp. tocross-sect.area of cond.

DEHNportBlitzstromableiter




890e.ppt / 09.09.97


UE Pressure-controlled Encapsulated Gliding Spark GapRed Line

S1558e 1558e.ppt / 19.09.97


UE DEHNbloc/3

2606.ppt / 13.01.2000 / SMS2606


UE

Class B lightn. current SPDenergy capability of 3poleversion: 60 kA (10/350),leakage-current-free

Pressure-controlledencapsul. gliding spark gap

does not blow out!no minimum distances to other equipment necessary

Three-pole versionideal for TN-C Systemsspace-saving design, only 4 mod.multi-function terminal for clamping wires and bus bar

Red LineDEHNbloc®

S1356e 1356e.ppt / 09.09.97


UE

2600.ppt / 13.01.2000 / SMS2600

Red LineDEHNbloc 3 phase installation


UE

Surge Protection

of Power Supply Systems


UE Surge Voltages Caused By Flourescent Tube

ParalelleDatenleitung

DatenleitungEmpfänger

DatenleitungSender

S1569 1569.ppt / 14.06.99 / OB


UESurge Voltage Produced by

Switching on a Fluorescent Tube

S701e 701e.ppt / 05.09.97

50 Vdiv

2 µsdiv


UE DEHNguard® Overvoltage ArresterClass II


Uc 75 V~ 150 V~ 275 V~ 320 V~ 440 V~ 600 V~

isn 10 kA 15 kA (8/20)(8/20)

Usp < 450 V < 750 V < 1.5 kV < 1.75 kV < 2.25 kV < 3 kV

S893e 893e.ppt / 05.09.97

DEHNguard

Basic Circuit Diagram

Red Line


UE DEHNguard® T Overvoltage ArresterClass II

S895e 895e.ppt / 09.09.97

DEHNguardT


Uc 75 V~ 150 V~ 275 V~ 320 V~ 440 V~ 600 V~

isn 10 kA 15 kA (8/20)(8/20)

Usp < 450 V < 750 V < 1.5 kV < 1.75 kV < 2.5 kV < 3 kV

Red Line


UE

T400181e.ppt /16.04.00 / PMET4/00181e

Sectional View of Surge Protective Device DEHNguard® TSectionalSectional ViewView of Surge Protective Device DEHNguardof Surge Protective Device DEHNguard®® TT

Thermal Disconnector(Soldered Junction)

Dynamic Disconnector(Bottleneck)


UEDEHNguard® 275

TNC-S-System Class II

1902.ppt / 20.07.99 / CGS1902


UEDEHNguard® Overvoltage Arrester

Installation in TNC-S-SystemsClass II

889e.ppt / 05.09.97S889e

L1L2L3NPE

Cross-sectional area of grounding cableat least like incoming cable

Conductor size 6mm²cross-sectional areamax. 35 mm²

F1F2F3

F4 F6F5

Possible connections35 mm² multi-standed25 mm² fine-stranded

F4 - F6 ≤ 63 Aonly required ifF1 - F3 greater than 125 A

DEHNguardTyp 275

DEHN

DEHNguardTyp 275

DEHN

DEHNguardTyp 275

DEHN

DEHNguardTyp 275

DEHN


UERed Line

DEHNguard TNC-S 230/400Class II

2601.ppt / 13.01.2000 / SMS2601


UE

Service Entry

PENL3L2L1

Application of DEHNguard® - Series Three Phase TNC-S – System

Class II

1pc. DEHNguard® TNC-S (FM)

DEHNguard TNS 230/400

PE

L1 L2 L3 N

Sub-Distribution Board


UE

Service Entry

Application of DEHNguard® - Series Single Phase TNC-S – System

Class II

PEN

L

2 pcs. DEHNguard® (FM)or

2 pcs. DEHNguard® T (FM)

Sub-Distribution Board


UESurge Protective Device

DEHNrail 230 FMLClass III

for protection of the power supply circuit of industrial electronicsequipment against transient surges in switchboards


UE

Surge Protective Device DEHNflex M

Class III

for installation in electrical systems,

e.g. cable trays, flush-mounted socket outlets and fire/burglar alarm panels.


UE

DEHNguardTyp 275

DEHN

Minimum DistanceLightning Current SPD - Overvoltage SPD

1004e.ppt / 05.09.97 S1004e


DEHN

L1L2L3N

Lightning current arresterDEHNport®

Overvoltage arresterDEHNguard®

Cable length ≥ 5 m* * ≥ 15 m with parallel

mounting of the PE conductorin one cable


UE DEHNventil® TNC-S


UE

Monitoring/Triggering UnitMonitoring/Triggering Unit

Encapsulated Spark Gap Unit(SG1, SG2)Encapsulated Spark Gap Unit(SG1, SG2)

Partial section through DEHNventil® - TNC-S


UE

2417 / 26.03.2001 2417_c

DEHNventil TNC-S - Technical Datas

DEHNventil® TNC-S

Uc 255 V ~IImp 25 / 100 kA (10/350)Up ≤ 1,5 kV

315 A (L)125 A (L-L´)

Coordinated-SPD B

DEHNventil®TNC-S DNo. 900 374


UE

Tested in accordance with E DIN VDE 0675 Part 6, -6/A1,-6/A2

Energy cordinated

SPD Class B

Can be applied without back-up fuse up to:125 A for serial connections315 A for parallel connections

Red Line DEHNventil®

Follow current extinguishing capability: 25 kArms

Voltage protection level: ≤ 1.5 kV

Rated voltage = 255 V acc. to IEC 60364 -5-53/Ed.2

Lightning imp. discharge capability in acc. to lightningprotection level I


UE

1803e

Function Diagram for Gas-blast Arc Quenching byRadial and Axial Gas Flow (RADAXflow Technology)

Electrode 1

Electrode 2(Expulsion Electrode)

Gas-EvolvingInsulating Material

Gas Flow- Radial- Axial

Arc


UE

These completely new kind of spark gaps (used for DEHNventil®) have the positive characteristics of both spark gaps and varistors and are an ideal symbiosis for modern surge protection. The multitude of low energy surges will be limited and discharged at low protection level without mains follow currents arising. If high energy lightning surges cause the activation of the modern, encapsulated main spark gap based on the Radax-Flow principle, any mains follow current will be limited to very low values.

This is the “All-In-One Solution!”


UEAssignment Of Lightning / Surge ArrestersIn Accordance With BSEN6651/IEC61643-11

Designation of the Characterization of Purpose of the Place ofProtective Device the Protective Protective Measure Installation

Measure

2000e

Surge Arrester Surge Protection Protection Against Sill-Type Trunking(Class III) at the Terminal Differential Mode Surges Socket Outlets

Equipment (L Towards N) Device Terminals

Surge Arrester Overvoltage Protection Protection Against Sub-Distribution(Class II) at the Distribution Common Mode Surges Boards

Level (L Towards PE)(N Towards PE)

Lightning Current Lightning Protection Protect the Electrical Main Distribution Arrester or combined Equipotential BondingArrester DEHNventil (Class I)

Currents


UE

Nominal Inductance of 15 µHSafe energy coordination oflightning current and overvoltage SPDs

Nominal Current of 35 AMounting in compact installations, e.g. mobile radio systems, pumping power stations, etc. and in one-family houses

Easy InstallationConnection to standard bus barsMulti-function terminal for clamping terminal wires as well as standard bus bars

Red LineDEHNbridge Decoupling Element

S1358e 1358e.ppt / 05.09.97


UE

Nominal inductance of 15 µHsafe energy coordination of lightning current SPD and overvoltage SPD

Nominal current of 63 A

Simple mountingwiring via standard bus barsmulti-function terminals for connecting wires as well asbus bars

Red LineDecoupling Element DEHNbridge 63 A

S1559e 1559e.ppt / 22.09.97 / AHE

ue dehn (u.k.) ltd - caltechold.caltech.ie/pdf/dehn_redline_presentation.pdf · s659/3e 659-3e.ppt...

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