THE MOST ADVANCED VARISTOR AND RESISTOR TECHNOLOGY
MADE IN GERMANY.
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INNOVATION & QUALITY FROM TRADITION
OUR CUSTOMIZED SOLUTIONSEXCEED INTERNATIONAL STANDARDS
Ourextensiveproductrangeincludestheidealcomponentforyourap-plication.Wedevelopandmanufacturepartsaccordingtoyourtechnical specification.Ourdesign-teamwillassisttoselectthebestsolutionfor your application.• SiC (Silicon Carbide) Varistors / non-linear Resistor(Non-inductive; highest energy rating; largest voltage range; highest temperature rating; modular system)• Si-Metal Ceramic Resistors(High continuous power; non-inductive; customized designs) • Metal Oxide Varistors(Largerange; customized solutions; ZnO / MOV)
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Relay ProtectionRestrictedearthfault(REF)protectionisasensitiveway to protect a zone between two measuring points against earth faults.Inapplicationsof highimpedancerelaysaHVRnon-line-ar resistor (SiC-Varistor) may be required to limit the cur-rent transformer secondary voltage to asafe levelduring amaximuminternalfaultcondition.HVRoffersawide rangeofVaristorstogetherwiththestabilizingresistor made by HVR Pentagon.Generator De-ExcitationAn exciter in a synchronous generator is used to provide the DC supply to the electromagnetic field winding which is mounted on the rotor of the generator. In order to pre-ventdamagebeingsustainedtoexcitationsystemsdu-ringshutdown,asuitabledischargeunitforthestored energy in the coil must be available.HVR silicon carbide varistors have provided a reliableso-lutionforDe-excitationsystemsworld-wide.Theunique technologyofHVRsupportscustomersformostcost-ef-fective solutions.Current Transformer UnitA major operational risk that can occur with a current transformer (CT) is when the secondary circuit has an open circuit condition whereas the primary circuit is still energized. This could happen during a routine mainte-nance of the burden or because of damages on leads or contacts. High voltage transients could damage the CT winding which may lead to further destructions. With the HVR Current Transformer Protection Unit (CTPU) you can protect your CT against these operational risks.RC Circuit / Harmonics AttenuationToensuretheprotectionoftransformerwindingsfrom discharge after transient voltages at the transformerter-minalsasaresultofinteractionsbetweenthetransfor-mer,circuitbreakerandtheload,anRCfilterbetween phase and earth is an ideal solution.HVROffersanidealsolutionforthe„R“oftheRCfilter withitsLIHVRseries(LowInductanceHighVoltageRe-sistor).ThestandardvariantsoftheLIHVRsystemrange from 1kW to 9kW..And many other...
EVERYTIME TWO STEPS AHEAD
UNIQUE SOLUTIONS FORUNIQUE APPLICATIONS
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SIC SILICON CARBIDE VARISTORS
SIC Serie 40/45 SIC Serie 60 SIC Serie 80/95 SIC Serie 150
SI-METAL CERAMIC RESISTORS
Silico Series Tube 18/8 Silico Series Tube 25/13 Silico Series Tube 38/25 Silico Series Tube 50/36 Silico Series LIHVR Silico Specials Silico Terminals
OUR PRODUCT RANGE:
THE LARGESTSELECTIONOF ELECTRIAL CERAMICPRODUCTS ONTHE MARKET
AND MORE AS CUSTOM-MADE.
Our range of productsare exclusive not only in terms of excellent qua-litybutalsowithavarietythatisuniqueonthemarket.Theareasof application for our products are diverse. Some examples are
In case our variation in technical ceramic would not meet thetechni-calrequirementofourcustomer,wewillworkonthedevelopment of a solution by our custom-made-service.
•Relay Protection,CT ProtectionGenerator De-ExcitationAnd many more...
•Lifting MagnetsRC CircuitLaser Application
ZnO Series 5 M ZnO Series 7 M ZnO Series 10 M ZnO Series 14 M ZnO Series 20 M ZnO Series Block ZnO Specials
ZINK OXIDE VARISTOR / ZNO MOV
SICSeries125S SICSeries250S SICSeries400S SIC Specials
Our range of products not only convinces with excellent quality but also with avariety that is unique on the market.However, we are also aware of the need to design products with very spe-cial requirements, something that is not regally available of the shelf. Special applications usually require very special solutions.And that is what HVR®has been doing for very long time: Completely new developments for very special applications.With expertise. With know-how. With renowned customers:
YOUR APPLICATIONIS UNIQUEDO NOT BE SATISFIED WITHTHE STANDARDS.
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ACROSS INDUSTRIES &INTERNATIONAL
HVR® HAS REPRESENTATIONS IN MORE THAN 10 COUNTRIES, TO SUPPORT MANY INDUSTRIES AND YOU
Knowledge of the special requirements inthe respective industries is anexistentialpartofourwork. Andwearespecialistsinthis:Engineers, techniciansandplannersformauniqueteamtodeveloptherightsolu-tion even for very special applications.
MADE IN GERMANY.AT HIGHEST QUALITY.FOR HIGHEST SAFETY.
HVR® GroupHVR International Ltd.located in Jarrow, Tyne and Wear, UK specialises in Linear Carbon Ceramic ResistorTel: +44 (0)191 489 7771 www.hvrint.comHVR Pentagon Ltd.located in Birmingham, West Midlands, UK manufactures a wide range of Wire Wound Power ResistorTel: +44 (0)121 773 2413 www.hvrpentagon.comHVR Advanced Power Components Inc2090 Old Union Rd., Cheektowaga, NY 14227 HVR sales office with own design & assembling dept.Tel: +1 (0)716 693 4700 www.hvrapc.com