3EQ Composite Housed Surge Arresters
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1 Power Transmission and Distribution 3EQ Composite Housed Surge Arresters Saving Money and Space, Gaining Reliability
2 A perfect Combination of Cost-Savings, Safety and Reliability 3EQ Surge Arresters: Your Reliable, Sturdy and Economic Choice 3EQ surge arresters are virtually indestructible. While their tube design provides the highest possible mechanical strength and enables them to support high bending moments, the silicone rubber insulation is ideal for outdoor applications in severe environmental conditions. No matter how tough the environmental or operating conditions may be, our 3EQ arresters assures a 100 % reliable pressure relief performance, they provide the ultimate in protection. They are break-proof and retain at least 75 % of their mechanical strength even after pressure relief. They provide the greatest stability, even in earthquakes. Reduced Space Requirements Their advantages are more than convincing, a perfect combination of cost-savings and safety for your substations. The combination of silicone rubber and fiber-glassreinforced tube imparts enormous load carrying capacity to the structure. Thus, our 3EQ surge arresters are the perfect choice to replace existing post insulators in your substations up to s of 0 kv. Where space is most essential, 3EQ surge arresters can even be mounted over the transformer to support connectors without any danger to neighboring equipment. This assures maximum stability, even if the arresters should blow out after overloading. Pressure relief is absolutely reliable there is no danger to equipments in the direct vicinity. Due to their unique tube design, no parts will be expelled, and the emerging arc will burn between the ends of the pressure relief device. Longevity and Reliability The 3EQ s Silicone Rubber housings provide the best possible long-life-performance for high- surge arresters. They make use of all the advantages of bonding vulcanized-on silicone rubber sheds to a fiber-glass-reinforced plastic tube, providing enhanced safety and meeting every requirement. And, with their silicone rubber housings, the arresters enjoy all-round protection. The silicone rubber shield provides a reliable defense against snow, sandstorms, ozone, high-level UV radiation, sea salt, soot and acid rain in industrial regions. Only genuine silicone rubber is capable of maintaining its hydrophobic properties throughout its entire service life and is resistant to UV radiation. The silicone rubber of the 3EQ surge arresters reliably prevents the formation of films of water or dirt. Surface currents resulting from conductive layers of accumulated dirt are eliminated. The cost-saving solution for your substation You require fewer post insulators for your installation, thereby saving you both money and space. Saved installment space Transformer Surge arrester Support Voltage GIS bushing transformer Support Transformer 3EQ as support Voltage GIS bushing transformer Support Street Street Diagram of substation prior to 3EQ modification Diagram of substation with integrated 3EQ modification 2
3 A lot more speaks for the efficiency of 3EQ Their dramatically reduced weight means savings right from the start in transportation, in support structures and in installation. The weight reduction in our polymeric arresters compared with porcelain types is amazing. In fact, high arresters with composite housings are about 50 % lighter than their porcelain counterparts. This makes all the difference: Initially in terms of transportation costs. Then there is installation and commissioning involving reduced labor costs, less complex support structures and simple hoisting gear. The cranes required can be significantly smaller and the cost using them correspondingly lower. And there s another way in which they save costs polymeric arresters don t need cleaning. By virtue of its hydrophobic properties, everything is so much simpler with silicone rubber throughout its entire service life. They provide numerous advantages a gain for everyone, thanks to Siemens know-how for innovations and unsurpassed quality of manufacture. All 3EQ advantages at a glance are: Maximized service life 100 % break-proof reliable overload performance, no hazardous splinters even under maximum pressure: these arresters can even be installed in close proximity to costly system components Safe from damage unbreakable during transportation, installation, storms, earthquakes and immune to vandalism Outstanding stability in earthquake and storm: these arresters can be used to replace post insulators Use of silicone rubber hydrophobic, resistant to pollution and to UV radiation Extremely rugged reliable in any climate and polluted environment Substantially reduced weight ease of installation with simple lifting gear Complete and wide product range, special versions to order Cost-effective in all respects maximum availability for many special application and installation needs Sealing system Reduce the required space even more It s no problem to install our 3EQ surge arrester over the transformer! There is no danger to equipment, even in the direct vicinity. Voltage transformer Directional pressure relief device Nitrogen FRP rods Metal oxide blocks 3EQ as support GIS bushing Glass fibre reinforced tube Transformer Silicone rubber housing Street Clearance between equipment according to technical standards 3
4 Choose the Appropriate Arrester LD-class Long duration current impulse Max. value/a Bending Moment/kNm Diagram In just four steps you can choose the right surge arrester. 1. First step choose the type 3EQ1, 3EQ4 or 3EQ3 from diagram Second step verify the maximum technical data with table Third step choose the surge arrester with table Fourth step select the suitable installation and grounding and complete the order number with table 3. 3 and 4 2 and Special application Special application Special application 3EQ1 3EQ4 3EQ3 Table U m kv Highest for equipment U m Standard lightning impulse withstand BIL min Rated U r Continuous operating Line discharge class Long duration current 2 ms U c LD-Cl [A] 8/20 µs 5 ka Maximum values of the residual s at discharge currents of the following impulses 8/20 µs 10 ka 8/20 µs 20 ka 30/60 µs 0.5 ka 30/60 µs 1 ka 30/60 µs 2 ka Arrester type EQ P B xxx EQ P B xxx EQ P B xxx EQ P B xxx EQ P B xxx EQ P B xxx EQ P B xxx EQ P B xxx EQ P B xxx EQ P B xxx U m EQ S B xxx EQ S B xxx EQ P J xxx EQ P J xxx EQ P J xxx EQ P J xxx EQ P J xxx EQ P J xxx EQ P J xxx EQ P J xxx U m EQ S B xxx Resonant earthed EQ S E xxx Resonant earthed EQ S E xxx EQ P F xxx EQ P F xxx EQ P F xxx EQ P F xxx EQ P F xxx EQ P F xxx EQ P F xxx EQ P F xxx U m EQ S F xxx EQ P P xxx EQ P P xxx EQ P P xxx EQ P P xxx EQ P P xxx EQ P P xxx EQ P P xxx U m EQ S B xxx 4 1) According to IEC these values are measured on individual housing unit
5 To find the right arrester just follow the color codes Table 1 3EQ1 3EQ4 3EQ3 Maximum values 3EQ1 3EQ4 3EQ3 Nominal system U n kv Highest for equipment U m kv Maximum rated U r kv Maximum nominal discharge current I n ka Maximum line discharge class Maximum energy absorption capability kj/kvr Maximum long duration current impuls A Rated short circuit current ka Maximum permissible service load knm p. u. U r 1.3 preheating to 60 C and stressing with rated energy 1.2 preheating to 40 C t [s] p. u. U r 1.3 preheating to 60 C and stressing with rated energy 1.2 preheating to 40 C t [s] Temporary Over Voltage (TOV) Diagram 2 Diagram 3 Height [H] Number of units Housing insulation Creepage distance Top load dynamic Grading ring diameter [D] Weight TOV Diagram Figure [mm] Lightning impulse withstand 1.2/50 µs 1) Power frequency withstand 1 min., wet 1) [mm] [N] [mm] [kg]
6 Highest for equipment Standard lightning impulse withstand Rated Continuous operating Line discharge class Long duration current 2 ms Maximum values of the residual s at discharge currents of the following impulses Arrester type U m BIL min U r U c LD-Cl [A] 8/20 µs 5 ka EQ P J xxx EQ P J xxx EQ P J xxx EQ P R xxx EQ P R xxx EQ P J xxx EQ P J xxx EQ P J xxx EQ P R xxx EQ P R xxx EQ P J xxx EQ P V xxx U m EQ S J xxx 8/20 µs 10 ka 8/20 µs 20 ka 30/60 µs 0.5 ka 30/60 µs 1 ka 30/60 µs 2 ka EQ P P xxx EQ P P xxx EQ P P xxx EQ P V xxx EQ P V xxx EQ P P xxx EQ P P xxx EQ P P xxx EQ P V xxx EQ P V xxx U m EQ S J xxx EQ P N xxx EQ P N xxx EQ P N xxx EQ P N xxx EQ P N xxx U m EQ S P xxx EQ P R xxx EQ P R xxx EQ P R xxx EQ P M xxx EQ P R xxx EQ P R xxx EQ P R xxx EQ P N xxx U m EQ S S xxx EQ P V xxx EQ P V xxx EQ P V xxx EQ P V xxx EQ P V xxx EQ P V xxx EQ P S xxx EQ P V xxx EQ P T xxx EQ P V xxx EQ P T xxx EQ P S xxx EQ P T xxx EQ P T xxx EQ P U xxx 6 1) According to IEC these values are measured on individual housing unit
7 Height [H] Number of units Housing insulation Creepage distance Top load dynamic Grading ring diameter [D] Weight TOV Diagram Figure Power frequency withstand [mm] Lightning impulse withstand 1.2/50 µs 1) 1 min., wet 1) [mm] [N] [mm] [kg]
8 Housings Figure 3EQ1 11 3EQ1 12 3EQ4 41 3EQ4 42 3EQ3 32 3EQ3 33 8
9 Installation and Grounding 3EQ ø (15) (87) (16) (87) mounting holes 200 x 200 mm for insulated installation DIN flat terminal ø ø24 4 mounting holes 310 x 310 mm for insulated installation NEMA flat terminal 44.5/ /50 ø30 Additional cable clamp for flat terminal Bolt terminal 9
10 Installation and Grounding 3EQ4 3 M M / /50 ø ø ø (15) 4 mounting holes 310 x 310 mm for insulated installation Additional cable clamp for flat terminal Bolt terminal DIN flat terminal NEMA flat terminal Control Devices for Surge Arrester These control devices can be connected to all shown surge arresters in this catalogue. Control spark gap To estimate the current that flows through the surge arrester in case of an over and to count the surges Order number: 3EX
11 Installation and Grounding 3EQ3 M20 M / /50 ø ø ø (15) 4 mounting holes 270 x 270 mm for insulated installation Additional cable clamp for flat terminal Bolt terminal DIN flat terminal NEMA flat terminal Up to 200 m Surge counter Surge counter with leakage current meter Sensor Display Surge counter with leakage current meter remote indication Order number: 3EX5030 Order number: 3EX5050 Order number: 3EX5060 Order number: 3EX
12 Table3 Example Order number (for example) 3 E Q P F D A 1 Silicone rubber housed surge arrester tube design (for example) 3 E Q Surge arrester model Bending moment 6 knm 4 Bending moment 21 or 38 knm 2 Bending moment 42 or 72 knm 3 Rated in kv (for example) 120 Long duration current 500 A A A A A 5 Application Phase surge arrester P Neutral point surge arrester S Tertiary winding surge arrester T Housing size of single unit (for example) F Line discharge class LD 1 1 LD 2 2 LD 3 3 LD 4 4 LD 5 5 Number of units 1 unit 1 2 units 2 3 units 3 4 units 4 Form of sheds and colour of porcelain Alternating sheds, grey porcelain 4 High- terminal Metal plate (connection with cable eye) A Bolt 30 mm diameter, 70 mm long; stainless steel B Bolt 30 mm diameter, 70 mm long; hot-dip galvanized steel C Bolt 30 mm diameter, mm long; stainless steel D Bolt 30 mm diameter, 100 mm long; stainless steel E Bolt 36 mm diameter, mm long; stainless steel F Bolt 40 mm diameter, mm long; stainless steel G Bolt 40 mm diameter, 100 mm long; stainless steel H Bolt 40 mm diameter, 120 mm long; stainless steel J DIN flat 100 mm x 100 mm hot-dip galvanized steel K DIN Flat 100 mm x 100 mm hot-dip galvanized steel, 20 mm thick L DIN Flat 200 mm x 100 mm hot-dip galvanized steel M NEMA Flat 100 mm x 100 mm hot-dip galvanized steel N NEMA Flat 100 mm x 100 mm copper S NEMA Flat 100 mm x 100 mm aluminum U Name plate German/Englisch (standard) A French B Czech C Slovene D Russian E Spanish F Portuguese G ANSI H Brazil T Mounting Not insulated 0 Insulated (Standard) 1 4 hole, insulated, 200 mm x 200 mm, M hole, insulated, 310 mm x 310 mm, M20 3 The top row in table 3 shows an example of the build-up of our order numbers. The items in dark yellow are customer specific variables. Please contact us at: Siemens AG Power Transmission and Distribution High Voltage Division (PTD H51) Nonnendammallee Berlin Germany arrester@siemens.de Phone: / arrester@siemens.de The information in this document contains general descriptions of the technical options available, which do not always have to be present in individual cases. The required features should therefore be specified in each individual case at the time of closing the contract. Subject to change without prior notice Order No. E50001-U113-A318-X-7600 Printed in Germany Dispo TH PA If you have any questions about Power Transmission and Distribution, our Customer Support Center is available around the clock. Phone: / (charges depending Fax: / on provider) support@ptd.siemens.de
3EQ Composite Housed Surge Arresters Saving Money and Space, Gaining Reliability
3EQ Composite Housed Surge Arresters Saving Money and Space, Gaining Reliability Power Transmission and Distribution 1 A perfect Combination of Cost-Savings, Safety and Reliability 3EQ Surge Arresters:
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