Ensto Surge Arresters

1 Ensto Surge ArrestersEffective protection of electrical networks against overvoltagesEnsto designs and provides smart electrical solutions to improve the safety, functionality, reliability and efficiency of smart grids, buildings and transportation. (1,5 to 3 kV DC)VARISIL HTS(5 to 198 kV)VARISIL HDC (1 to 4,8 kV DC)VARISIL HI(5 to 144 kV)VARISIL HE / HE-S (5 to 42 kV)VARISIL H24 / H36 VARISIL HD/T (18to 42 kV)CLS (75 to 150 V)HC (1 to 18 kV) Ensto Surge arrestersThe best solutions to customer s expectationsTo each application its Surge arresterDesigned and manufactured to the highest quality standards, Ensto s range of Surge Arresters ensures years of maintenance-free service in the following fields: Overvoltage protection for HV and MV networks Overvoltage protection for railway networks either in direct or alternating current Overvoltage protection for cable sheathes Voltage limitation for non-earthed metal structuresBased on metal oxide varistor and silicone rubber technologies, our Surge Arresters provide total control of residual voltage based on insulation coordina-tion rules, thus considerably improving the level of Arresters for railway applicationsThe availability of a secure railway power supply is critical for search for reliability requires, amongst others, the use of specific Surge Arresters and voltage limiters suitable to these protection afforded by these devices ensures the safety of people and equipment.

2 Thus reducing operating order to provide good quality energy, Utilities must constantly improve the quality of their grids ; in this challenge, overvoltage protection is a key element. Appropriate overvoltage protection is fundamental in optimis-ing the continuity of service, furthermore, it ensures personal safety and reduces immobilisation costs. Product strengths Guaranteed continuity of service Improved power quality Guaranteed personal and equipment safety Maintenance-free equipmentSystem Voltage UM / kVLine Discharge class acc. IEC 60099-41233 Our range of productsDistribution Surge ArrestersClass 1 / DHVARISIL HE5 to 36 kVClass 1 / DHVARISIL HE-S5 to 54 kVClass 1 / DHVARISIL H24 / H3624 and 36 kVStation class Surge ArrestersClass 2 / SLVARISIL HI5 to 144 kVClass 3 / SMVARISIL HTS5 to 204 kVRailway Surge ArrestersClass 1 / DHVARISIL HD / T18 to 42 kVClass 2 / SLVARISIL HDC1 000 to 4 800 VdcClass 3 / SM85062 000 Vdc&4 000 VdcVoltage to 150 Vac or VdcSheath Voltage LimitersClass 1 / DHVARISIL HC5 to 18 kVClass 1 / DHRNL HC1 to 6 kV4 Ensto products are manufactured with high quality raw mate-rials and components whose conformity and characteristics are highly checked and , VARISIL Surge Arresters have been designed with respect to sustainable development.

3 By limiting consumption of resources at the manufacturing stages and for easier dis-mantling at the end of and eco-friendly designVARISIL Surge Arresters are built with high energy Metal Oxide Varistors (MOV), being housed by HTV silicone rubber, and finally encapsulating into a fiberglass reinforced solid raw materials with outstanding electrical and mechanical properties allow to make the products more compact, thus saving global resources and limiting needed, the various constituents can be separated rather easily and quickly for end-of-life management and has been selling its own polymer housed metal oxide Surge Arresters for more than 25 years under VARISIL Surge Arresters can capitalize on a long and proven field experience. In particular, they have demonstrated their ability to operate durably even in the harshest environmental more than 70 years of experience in overvoltage protection, Ensto offers products and solutions which substantially contribute to the improvement of quality, reliability and availability of power supply than 5 million VARISIL Surge Arresters are now in service all over the with international standardsEnsto products are designed and manufactured with a Quality Management System certified to ISO 9001 and based on the latest edition published in addition.

4 All VARISIL Surge Arresters fulfil the require-ments of IEC 60099-4 including the new classification introduced in 2014 and the associated performance testing and routine testing are carried out - Ur=__kV - Uc=__kDistribution Surge ArrestersVARISIL HE and HE-SThese ranges of Surge Arresters are dedicated to overvoltage protection of Distribution networks up to 36 kV for VARISIL HE and up to 52 kV for VARISIL HE-S. According to IEC 60099 edition 2014, these products belong to Distribution Heavy (DH) HE and HE-S are polymer housed gapless Surge Arresters . The metal oxide varistor blocks are wrapped by a fiberglass reinforced epoxy resin, encapsulated in a silicone rubber housing. The HE-S, is made of more layers wrapping in order to be stronger. The design of the VARISIL HE-S provides double cantilever Benefits High resistance to climatic stresses Optimised electrical performance Long creepage distance6 HEXX - Ur=__kV - Uc=__kOPTIONSHEXX - Ur=__kV - Uc=__kHEXX - Ur=__kV Uc=__kV - MM/YYS3D2 Ground lead & WashersIFFault IndicatorACCESSORIESM ounting bracket for cross arm, earth braid, pedestal (insulated or not).

5 TECHNICAL CHARACTERISTICSVARISIL HEVARISIL HE-SRated Voltage (Ur)5 to 36 kV rms5 to 54 kV rmsNominal discharge current (In)10 kA with 8/20 waveshape10 kA with 8/20 waveshapeLine discharge class / Classification1 / DH1 / DHHigh current impulse withstand100 kA with 4/10 waveshape100 kA with 4/10 waveshapeLong duration current impulse withstand300 A with 2 000 s waveshape300 A with 2 000 s waveshapeEnergy absoption capability (with 8/20 waveshape) kJ/kV of kJ/kV of UcSpecified long-term load10 20 Short circuit current withstand20 - 600 A/1s20 - 600 A/1sHEXX - Ur=__kV - Uc=__k(*) For high mechanical performance refer to our VARISIL HE-S or HI productsVARISIL HEVARISIL HE-SLine end terminalMetal Oxide VaristorsFiberglass reinforced wrappingPolymeric housingEarth end terminalTypical design for Distribution Surge Arrester7 The MOV have the property of shifting very rapidly from an insulating state to a very conductive state when voltage, at their terminals, increases.

6 Under normal conditions the leakage current is very low and mainly capaci-tive. As a result, it is not necessary to use series gaps with the line is subjected to a tran-sient overvoltage, the Surge arrester operates instantaneously, a preferred path for the energy to the avoids potentially dangerous voltage stress to electrical Surge ArrestersVARISIL H24 and H36 OPTION INTEGRATEDACCESSORIESThe product can be associated with various connection accessories (fittings, connectors) depending on the instal-lation conditions: horizontal mounting on transformer (H61) or on a riser pole (ERAS), vertical mounting (hanging mode).VARISIL H24 and H36 are dedicated for Distribution networks in accordance with HN 65-S-40 standard (EDF) and IEC 60099-4 edition 2014. These Surge Arresters are equipped with a fault indicator based on electronic detection.

7 VARISIL H24 and H36 are polymer housed gapless Surge Benefits Compact size High mechanical strength High sensitivity of the fault indicatorTECHNICAL CHARACTERISTICSH24H36 Rated Voltage (Ur)2436 Continuous operating voltage (kV rms) discharge current (kA 8/20)55 Maximum residual voltage at 5 kA 8/20 (kV peak)75105 Maximum residual voltage at 40 kA 8/20 (kV peak)100140 High current impulse withstand (kA 4/10)100100 Long duration current impulse withstand (A 2 000 s)300300 Short circuit current withstand (kA )66 Sensibility of the fault indicator (A )1010 Nominal creepage distance (mm)600900 Diameter of the weathersheds (mm)99106 Overall height (mm)405485 Approximate weight (kg) long-term load30 30 - Ur=__kV Uc=__kV - MM/YYIFF ault Indicator9 station class Surge ArrestersVARISIL HI and HTST hese ranges of Surge Arresters are dedicated for substations and/or power trans-formers for networks up to 170 kV for HI range and up to 245 kV for HTS to IEC 60099-4 edition 2014, VARISIL HI belongs to SL classification and VARISIL HTS belongs to SM products are suitable to Utilities, industries and HI and HTS are polymer housed gapless Surge Benefits High electrical performance Safe overvoltage protection Adjustable creepage distance Short delivery time10 TECHNICAL CHARACTERISTICS VARISIL HIVARISIL HTSR ated Voltage (Ur)5 to 144 kV rms 5 to 204 kV rmsNominal discharge current (In)

8 10 kA with 8/20 waveshape10 kA with 8/20 waveshapeLine discharge class / Classification2 / SL3 / SMHigh current impulse withstand100 kA with 4/10 waveshape100 kA with 4/10 waveshapeLong duration current impulse withstand500 A with 2 000 s waveshape800 A with 2 000 s waveshapeSpecified long-term load80 80 circuit current withstand63 63 TERMINAL OPTIONSTFM12studSCSquare pedestalSCII nsulated squarepedestalSTTripod pedestalSTII nsulatedtripodpedestalLINE TERMINAL OPTIONSTCC ylindrical stemPE4-hole padTFM12studTCwith gragingringPEwith gragingringACCESSORIESD ischarge counter : MDC3 VARISIL HI From 1 to 4 unitsVARISIL HTSFrom 1 to 5 units11 Railway Surge ArrestersVARISIL HD/TTECHNICAL CHARACTERISTICS HD 18 / THD 30 / THD 36 / THD 42 / TSingle phase power system features : - Nominal system voltage (kV rms) - Maximum system voltage (kV rms) - Exceptional system voltage (kV rms) - Rated frequency (Hz) to to to to 60 Rated voltage (kV rms)18303642 Continuous operating voltage (kV rms)15242933 Nominal discharge current (kA 8/20)10101010 Line discharge class / Classification1 / DH1 / DH1 / DH1 / DHMaximum lightning residual voltage at 10 kA 8/20 (kV peak) current impulse withstand (kA 4/10)100100100100 Long duration current impulse withstand (A 2 000 s)300300300300 Maximum steep current residual voltage at 10 kA 1 (kV peak) switching residual voltageat 500 A 30/80 (kV peak) absoption capability (kJ/kV rated)2222 Short circuit current withstand (kA ) min wet power frequency withstand voltage of the housing (kV rms)75105105105 Dry lightning impulse withstand voltage of the housing (kV )

9 180215215215 Nominal creepage distance (mm)610910910910 Specified long term load ( )30303030 This range of Surge arrester is dedicated for railway installations. According to IEC 60099-4, VARISIL HD/T belongs to Line Discharge class 1/ Distribution product is intended for railway Utilities, railway OEM s and train HD/T is a polymer housed gapless Surge arrester for overvoltage protection of equipment in substations, or on vehicles energized by alternating fiberglass reinforced resin structure provides high withstand to shock and vibration Benefits Long service life Resistance in severe environments High mechanical strength12 Railway Surge ArrestersVARISIL HDCTECHNICAL CHARACTERISTICSHDC 1 HDC 2 HDC 4 HDC voltageMaximum continuous value ( )5 min temporary value ( )9001 0001 2501 4001 8002 0002 2002 4003 6004 0004 4004 800 Continuous operating voltage Uc ( )9001 2501 8002 2003 6004 400 Rated voltage Ur ( )1 0001 4002 0002 4004 0004 800 Nominal discharge current (kA 8/20)

10 101010101010 High current impulse withstand (kA 4/10)100100100100100100 Long duration current impulse withstand (A 2 000 s)500500500500500500 Maximum lightning residual voltage at In (protection level, V peak)3 0004 2006 0007 20012 00014 400 Maximum switching residual voltage at 500A with 30/80 waveshape (V peak)2 4003 4004 8005 8009 60011 500 Energy absorption capability under 2 000 s impulse (KJ/kV)333333 Nominal creepage distance (mm)265270275280340345 This range of Surge arrester is dedicated for tramways and railway installations. According to IEC 60099-4, VARISIL HDC belongs to Line Discharge class 2 / station product is intended for railway Utilities, railway OEM s and train HDC is a polymer housed gapless Surge arrester for overvoltage protection of equipment in substations, or on vehi-cles energized by direct fiberglass reinforced resin structure provides high withstand to shock and vibration lead disconnectorCTMetalbracket13 Railway Surge Arrester8506 TECHNICAL CHARACTERISTICS 8506-158506-30DC system features.