LV and MV Metal-Oxide Surge Arresters

Energy Division

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Overview of ZnO surge arresters offered by Tyco Electronics Energy Division

Type Rating [kA] Line Application Continuous Page No.

discharge voltage [kV]

class from to

MV arresters for outdoor application

HDA 10 1 Outdoor 3 41 5

OCP0 5 n.a. Outdoor 3 29 6

OCP1 10 1 Outdoor 3 29 6

OCP2 10 2 Outdoor 3 41 6

Arresters for protection systems

CLX 10 1 Outdoor 3 36 7

MV arresters for indoor application

RDA 10 1 Indoor 3 26 8

SPA 10 1 Indoor 3 36 8

MPA 10 1 Indoor 3 6 8

CPA 10 1 Indoor 3 6 8

RSTI-SA 5, 10 n.a. Indoor 12 24 9

LV arresters

LVA 10 n.a. Outdoor 0,28 0,44 10, 11

Arresters for railway application

HE60 10 n.a. Outdoor 1 6 12

Tyco Electronics Energy Division

Safety and reliability are vital in high-voltage products and Tyco ElectronicsEnergy Division is committed to pio-neering improvements in performancefor our customers at all levels. Ourdevelopment teams work to generatea superior range of high performanceproducts. All products developedusing our extensive service experienceand within the constraints of interna-tional standards including IEC, IEEE,ANSI and many national standards.More than 35 years of systematicresearch into new materials to providesolutions for the electrical powerindustry resulted in a wide range ofproducts and materials.

A unique combination of propertiesresulted with:

• Non-tracking and low erosion rates inpolluted and non-polluted environ-ments

• Long term weatherability, resistanceto thermal ageing

• UV resistance• Chemical resistance• Tough, tear and impact resistance• Proven field experience, in all

environments over 35 years

We offer surge arresters for mediumvoltage power distribution systems thatare designed to reliably protect your

valuable assets from overvoltage. Theywithstand severe outdoor exposureover long operating lifetimes and helpmaintain service reliability in both over-head and underground installations:Our arresters have passed the mostrigorous tests (IEC 60099-4, ANSIC62.11, IEC 61643).

The metal oxide varistors used in the arresters provide high energyabsorption and low residual voltages.Multiple high current lightning and long duration switching surges areabsorbed without noticeable changesin the arrester characteristics or stability.

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Metal Oxide Surge Arresters

Tyco Electronics Energy Division started the development of polymerichoused surge arresters in the early1980's under the brands Raychem andBowthorpe. Since then we have aproven service experience across theglobe, operating in the worlds toughestenvironments.

Tyco Electronics Energy Division poly-meric zinc oxide surge arresters havebeen designed and tested to meet ourcustomers’ toughest environmentalconditions and to meet the require-ments of IEC 60099-4. Our gaplesspolymeric designs have been in servicesince 1994 and now the open cageseries builds on this experience andknow how.

Tyco Electronics Energy Division hasdeveloped and supported arresters forapplications including: Indoor and out-door application, cable sheath protec-tion, motor and switchgear protectionand rail.

All our arrester cores are manufacturedusing ZnO varistors, which displayexcellent thermal and current handlingcharacteristics due to the guaranteedhomogeneity of the varistor volume.This thermal behavior yields productswith:

• Excellent TOV performance

• Safe, non-shattering failure in theshort circuit test by pre-failing tohigher fault currents.

• High energy handling capability

Tyco Electronics Energy Divisionarrester benefits:

Tested in accordance withIEC 60099-4 at independent accredited laboratories

Excellent protection margins

Direct molded housing to preventmoisture ingress

Low residual voltages

High-energy handling

Excellent TOV performance

Safe non-shattering short circuitbehavior to higher current levels

Maintenance free

TERT proven polymeric housing:(Tracking and erosion resistant)

Excellent cantilever and tensile performance

Excellent mechanical, vibration andimpact withstand capability

Quality design and manufacturing,ISO 9001 and 14001 compliant

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Medium-voltage arresters for outdoor applications:HDA; Heavy Duty Arrester. HDA-MA (LA), HDA-M (ML)

At the core of the Raychem HDAdesign is our ZnO varistor disk, whichhas excellent electrical characteristicsand thermal stability. The resulting newvaristor and HDA design combinationhas resulted in excellent energy handling and TOV performance.

The construction of the HDA designcomprises of:

1 ZnO, (Zinc Oxide) varistors2 Raychem proprietary

EVA housing3 Flame retardant FRP structure4 Corrosion resistant aluminium

fittings

The crimped structural constructionensures light weight product with optimal mechanical strength.The manufacturing process ensuresvoid free construction and optimuminterface sealing. This is achieved bybonding the EVA housing directly tothe ZnO discs and corrosion resistantaluminium fittings using a Raychemproprietary bonding solution.

The polymeric housing was developedusing the knowledge accumulated over35 years of internal materials scienceexpertise and experience, resulting inan optimum shed profile and a materialwith excellent tracking and erosionresistance.

A large number of mounting and connecting accessories are available to meet individual requirements.

Excellent hydrophobicity of EVAHDA arrester supporting the MV cable termination on a riser pole

Raychem EVA material during the TERT

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Medium-voltage arresters for outdoor applications:OCP; Open Cage Polymeric series arresters

OCP is the latest gapless, zinc oxidearrester family from Bowthorpe.The OCP development was based on25 years of internal experience inarrester design and manufacture withinthe Tyco Electronics Energy Division.The final “OCP” qualification was per-formed in independent laboratory facilities in Europe.

OCP cores are manufactured using ZnO varistors, which display excellent thermaland current handling characteristics due to the guaranteed homogeneity of thevaristor volume.

Features of our new hydrophobic silicone OCP design are:

• Alternating sheds for excellent pollution flash over resistance

• Excellent TERT performance

A large number of mounting and connecting accessories are available to meetindividual requirements.

OCP0 Protection of MV networks and equipment from moderate lightning and switching surge related over-voltages in areas with relatively low iso-keraunic levels. Available from 3 kV up to 29 kV of Uc.

OCP1 Recommended as a protection from lightning and switchingover-voltages in areas with relatively high iso-keraunic levels. Available from 3 kV up to 29 kV of Uc.

OCP2 Class 2 surge arrester to use with more severe lightning andswitching overvoltage conditions. Available from 3 kV up to 41 kV of Uc.

The construction of the OCP designcomprises of:

1 ZnO, (Zinc Oxide) varistors2 Bowthorpe proprietary silicone

housing3 Flame retardant FRP structure4 Corrosion resistant aluminium

fittings

Excellent hydrophobicity of silicone

OCP arrester supporting the MV cable termination on a riser pole

Silicone housing material during the TERT

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Medium-voltage arresters for covered conductor overhead lines:CLX

Customers today, have very highrequirements for reliability and they arenot prepared to accept power interrup-tions in general and particularly anywhich might exceed one hour duration.

CLX is designed to use as a lightningprotection in overhead lines with cov-ered conductors. In a case of surge onthe network due to lightning, thepower arc tends to be concentrated atone position along the conductor closeto the insulator. This generally leads tocomplete burn down and dropping ofthe conductor, which can cause a realthreat to the public. CLX guides thelightning discharge current ground,prevents the insulator from flashingover and stops the high energy of thepower frequency follow-on current.

This makes it attractive also for bareconductor distribution systems. Even incase of accidental bridging CLX willnot cause a phase-to-ground fault.The CLX device contains a Metal OxideResistive Element and an externalseries gap to isolate the Metal OxideResistive Element (MORE) from thesystem. The CLX device is installednext to the line / post insulators andcan be adapted to the system. Theseries gap is adjustable using variousbrackets, electrodes and connectors.

Tyco Electronics Energy Division offersengineering support to optimize theuse of CLX.

Without CLXLightning protection with arcing horns. In case of lightning overvoltage, burn-ing arc leads to permanent tripping out of a line.

With CLXMORE stops follow on current within a half cycle of power – frequency voltageand prevents the line from outage.

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Medium-voltage arresters for indoor applications:RDA, SPA, CPA and MPA

Our indoor arresters are designed to allow installation of the arresters under the restricted space conditions typicallyfound in switchgear and transformer applications.

The SPA is a compact arrester withhigh mechanical strength. The housingmaterial is fully track resistant andable to provide flashover resistance indamp indoor conditions.

Gas insulated switchgear with RDAarrester and RICS adapter.

High-voltage cable sheath protectionsystem CPA Designed to the specific requirementsin cable sheath protection.

The SPA type arrester is also availablewith a thick-wall insulated, integratedline lead (SPA-I), which allows reduc-ing considerably the clearancesbetween the arresters and earth. SPA-Iarresters are the ideal solution forretrofitting switchgear with arresters.The line lead is available in lengths of250 mm, 500 mm and 750 mm.

Modern gas-insulated switchgearconnected to combined undergroundand overhead distribution networksare sensitive to effects like transientvoltage doubling. An arrester installedright at the cable end will clamp thevoltage to a level which does not putthe switchgear at risk.

CPA arresters installed in a cubicle toprotect HV cable sheath cross bonds.A robust, non tracking housing plusthe high energy handling capabilitiesof the Raychem arrester family makeit the ideal choice for the designer.

For motor-connection boxesMPA typeDesigned for the specific requirements of electric motors. A robust, non-tracking housing plus the high energy handlingcapabilities of the Tyco ElectronicsEnergy Division arrester family make it the ideal choice for the designer.

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Medium-voltage arresters for indoor applications:RSTI-SA; Screened, separable surge arrester

The screened gapless surge arrester isa “T“-shaped product. It is designedfor direct connection onto outer conebushings in accordance to EN50180 orEN50181 with interface type “C” or forparallel connection mating to the rearentry of the base screened connectorsystem RSTI designed for system voltage up to 24 kV.

The insulation of the screened surgearrester is made of a highly modifiedsilicone rubber characterized by hightracking resistance, elongation atbreak and non-flammability.

A thin walled screen is permanentlybonded onto the insulation and pro-tects the connection system againstunintentional contact.

The active part is a metal oxidearrester which meets the requirementsof IEC 60099-4 for separable anddead-front arresters.

The combination of screened connec-tor and surge arrester exceeds CENELEC HD 629.1 S1 requirements,which includes BS, VDE and otherinternational specifications.

Easily accessible rear plug with capac-itive test point.

Few accessories required for systemtest and earth connection.

Complete kit including screened surgearrester, threaded pin and ground leadfor three phases facilitates installationand storage.

Product Features:• Tested in accordance with

IEC 60099-4 (May 2004)• State of art - gapless design• Excellent protection margins• Low residual voltages• Excellent short circuit performance• Excellent TOV performance• Maintenance free

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Low-voltage gapless arrester:LVA

Raychem low voltage surge arrestersprovide protection for low-voltageoverhead lines, consumer in-housesupplies, distribution transformers andother systems.They are designed for applications inwhich protection against direct con-tact is not necessary.Insulated adapter modules are avail-able for use in insulated overheadlinesystems and on low voltage bushingsof distribution transformers.

• Suitable for indoor and outdoor use• Integrated disconnector and 1 m

line lead• Housing and lead is flame

retardant and UV resistant• Easy to identify failure indicator• Easy to install (no tools required)• Large selection of standard

accessories• CE certified• Tested according IEC 61643-1

+ Amd.1 and EN 61643-11

The integral disconnectordisconnects the arrester from the network if an overload occurs,caused, for example, by a lightningstrike in the vicinity or an impermissi-ble voltage excursion in the system. Ifthis happens the rating plate on theunderside of the arrester is displacedand remains dangling on a supportingtie, allowing for easier location of thearrester which must be replaced. Theground connection itself remainssecurely in position.

The gapless metal-oxide varistorincorporated in the surge arrester reli-ably imposes low-value limits onsurges caused by atmospheric over-voltages and switching transients,thus protecting the insulation of theconsumer-side networks and equip-ment. The varistor has a very shortresponse time (typically <100 ns) andcan safely handle high-current impuls-es up to 100 kA, 4/10 μs.

The arrester's nominal dischargecurrent is 10 kA. The metal oxidevaristor is enclosed in a sturdy,weatherproof polymer housing.Numerous tests have confirmed thedurability of the housing, even whenexposed to extreme temperaturefluctuations and contamination. TheLVA surge arresters are in compliancewith requirements Class II as definedby IEC 61643-1.

Fault – arrester disconnected from system

Normal operating condition

Operation including disconnector and indicator

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Overhead line Transition: insulated overhead linesto cables

Distribution transformers

Low-voltage gapless arrester:LVA

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Arresters for railway applications:HE60

For D.C. Applications Type HE 60 These DC-type surge arresters areparticularly suitable for protectionagainst overvoltages caused by light-ning and switching in both DC railwaysystems and network up to 4.5 kV.

The low residual voltage and high-energy capacity of the metal-oxidevaristors ensure safety and reliabilityeven under the most extreme condi-tions.

Thanks to its rugged, compact design,the arrester is capable of withstandingextreme mechanical stress (vibrations,shocks, pressure, torsion). HE 60surge arresters have been tested incompliance with the CENELEC stan-dard for surge arresters in DC net-works for railways EN 50123-5, 2003.Further tests have been carried out toexamine the sealing properties of thearrester and its resistance to mechani-cal stress and fire.

For A.C. Applications Type HDA / OCPFor installation on locomotive andother rolling stock Tyco ElectronicsEnergy Division offers special designsolutions. Please contact your salesrepresentative for further information.

For application on outdoor catenaryplease select the appropriate outdoorsurge arrester documented on page 5and 6.

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More than 35 years of systematic research into new materials for the needs ofthe electrical power industry resulted in a wide range of products with a uniquecombination of properties.

• Non-tracking and low erosion rates in polluted & non-polluted environments• Long term weatherability, resistance to thermal ageing• UV resistant and chemical resistant• Tough, tear & impact resistant• Compliant to International specifications, such as ANSI, AS, CEA and IEC

Tyco Electronics Energy Division controls its own materials development, somecompounding, product design, testing & qualification, moulding, extrusion andapplications through sales. We have our own HV testing facilities in Brightonand Munich.

Tyco Electronics Energy Division arrester manufacturing sites are accredited toISO 9001 and 14001. Our vendor routine tests and internal incoming inspectionconfirm performance of all critical components used in the assembly of ourarresters. We offer competitive lead times on all standard products.

Our high quality moulding and six sigma approach to process control ensuresthat product housings are shipped defect free to our customers.

Tyco Electronics Energy Division has over 35 years experience in materials,products and solving customer problems in the electrical utility world. We arethe original inventor of the MV polymeric arrester. Our strong brands teams,Raychem, Axicom, Bowthorpe EMP all contribute expertise to the continueddevelopment and launching of new and improved products..

Tyco Electronics Energy Division MV surge arrester team supply technical sup-port and training for customers to aid arrester selection to meet the electrical,mechanical and pollution performance requirements.

Tyco Electronics Energy Division Surge Arresters

Consideration ofEnvironment

Field Experience

Quality Control

Manufacturing

Product Designand Testing

Materials Testing

Polymer Composition

SUCCESS

The complete solution...

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Tyco Electronics Energy Division total commitment to quality

Even the best technology must be backed up by a thorough and consistentquality assurance program. At Tyco Electronics Energy Division, we subjectevery product to an extensive quality control regimen which includes the following procedures:At every production stage, beginning with the raw materials and continuingthrough to the packaged product, the QC lab tests all physical and electricalcharacteristics which can influence quality.By means of lot numbers the Quality Assurance Program ensures traceabilitybackwards all the way to the details of the compound batch test reports.We carry out requalification testing on a regular basis.

Quality assurance at Tyco Electronics Energy Division is not a static, but rathera constantly improving process directed towards our goals: complete customersatisfaction. The Tyco Electronics Energy Division arrester manufacturing sitesare accredited to ISO 9001 and ISO 14001. Our vendor routine tests and internalincoming inspection confirm performance of all critical components used in theassembly of our arresters.

Automated routine test facility forMetal-Oxide Surge Arresters in themanufacturing area

All of the above information, including drawings, illustrations and graphic designs, reflects our present understanding and is to the best of our knowledge andbelief correct and reliable. Users, however, should independently evaluate the suitability of each product for the desired application. Under no circumstancesdoes this constitute an assurance of any particular quality or performance. Such an assurance is only provided in the context of our product specifications orexplicit contractual arrangements. Our liability for these products is set forth in our standard terms and conditions of sale. Axicom, Bowthorpe EMP, Raychem,TE Logo and Tyco Electronics are trademarks.

Tyco Electronics Raychem GmbH Energy DivisionFinsinger Feld 1, 85521 Ottobrunn/Munich, Germany

Phone: +49-89-6089-0 Fax: +49-89-6096345

http://energy.tycoelectronics.com

Tyco Electronics Energy Divison

With 4000 employees and more than 10.000 customers world-wide, the Energy Division represents a very significant part ofTyco Electronics. Based in headquarters in Ottobrunn, nearMunich, Germany, the Energy Division is a global supplier topower utilities and power industry customers, to equipmentmanufacturers and transport systems. These customers areserved by dedicated R&D teams, sales representatives in morethan 80 countries, a professional marketing organization and25 manufacturing sites in five continents.

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