Volume: Power Utility Section: Medium-Voltage Power Cables 6/10 (12) kv up to 21/36 (42) kv Product: 3M QS 2000E Number/Issue: AABBCC46047#E/01 Date: February, 13.2007 Author: W. Röhling / R. Hornig 1. Product Description The 3M QS 2000E is a cold shrink, one-piece multilayer silicone rubber splice body with integrated stress control device, insulation and outer semi-conductive layer. The 3M QS 2000E silicone splice body is delivered on a removeable plastic supporting core. During the installation the ribbon core in unwound counter clockwise, allowing the splice body to shrink onto the cable joint. The applied permanent radial pressure guarantees a reliable function the entire lifetime. Stress Control Element Product Identification Outer Semi- Conductive Shield Supporting Core 3M QS 2000E 24kV I DN 16 06-06 1-A Figure 1: Splice body construction 1. The outer semi-conductive layer re-establishes the cable screen. 2. The insulation of the splice body replaces the cable insulation across the entire splice. 3. The integrated stress control element provides the proper electric field distribution. 4. 3M Scotch tape 13 is applied the connector and forms the inner conductive electrode. - 1 -
2. Product Features The versatile design of the prefabricated one-piece splice bodies allows installation on a wide range of cable sizes and types. Designed to fit all standard mechanical and compression connectors. Cold Shrink technology ensures quick, easy and tool-free installation. Excellent material properties allow the installation of the cold shrink splice body at temperatures ranging from -20 C to + 50 C. Meets and exceeds european CENELEC standard HD 629 3. Product Applications Straight joints 1. Polymeric insulated single core cables according to HD 620 2. Polymeric insulated three core cables according to HD 620 3. Paper insulated three core cables according to HD 621 Transition joints 1. Paper insulated single core and three core cables according to HD 621 2. Three core polymeric cable to three single core polymeric cables according to HD 620 4. Physical and Electrical Properties The specially formulated silicone material provided high elasticity, easy installation at low temperatures and superior electrical performance a wide range of operating temperatures. Table A. Typical Materials Data for Silicone Rubber Property Unit Numerical Value Stress Control Device Outer Shield Hardness Shore A 40 40 40 Tensile strenght MPa >7.0 >8.0 - Ultimate elongation % >700 >800 - Tear resistance N/mm >25 >20 - Volume resistivity Ωcm 10 13 10 15 >50 Dielectric strenght kv/mm - >20 - Relative permittivity år 11 3 - Dielectric loss factor tan <0,05 <0,005 Service temperature range C -50 up to +180 Installation temperature range C -20 up to +50 All ranges are averages, based on several determinations and are not intended for specification purposes... - 2 -
5. Electric Field Control The Quick Splice 2000E cold shrink splice body contains a refractive electrical stress control. The refraction of electrical flux lines at the boundary between insulation and stress control layer ensures an evenly distribution of the electrical field the entire splice area. Figure 2 shows an actual computerized plot of the equipotential lines the splice area of a 150 mm 2 inline joint based on U 0 =12kV. Semi Conductive Screen Cable Outer Semi Conductive Shield 0% Scotch 13 Tape (Electrode) Stress Control Element Equipotential Lines 10% 50% 90% Conductor 100 % Figure 2. Field Plot 6. Permanent Set When the splice body is radially stretched onto the removeable core, the result is referred to as permanent set of the silicone elastomer. This permanent set is considered in the determination of the application ranges. Permanent Set (%) 15 10 5 0 1 2 4 6 8 12 16 24 36 Time on Core [month] Figure 3. Typical Permanent Set as function of storage time on core. - 3 -
7. Relaxation Characteristic Based on the used silicone elastomer material an excellent relaxation characteristic is achieved the specified installation temperatures. Innerdiameter QS 2000 E loaded on Core (mm) +20 C Maximum Application diameter of QS 2000 E -20 C Minimum Application diameter of QS 2000 E Nominel extruded diameter of QS 2000 E 0 0,5 1 5 10 15 30 t (min) Figure 4. Relaxation of QS 2000E Splice Body at installation temperatures -20 C and +20 C 8. QS 2000E Selection Table Splice Body QS 2000E Cable Jacket max. (mm) (mm) Cable Dimensions Cross Section Range (mm 2 ) 6/10 kv 12/20 kv 18/30 kv Dimensions (mm) lenght max. (mm) DN12 12 kv 36.0 14.6-25.2 70-150 - - 28.0 150 DN16 12 kv 46.0 19.1-36.8 120-400 - - 42.0 230 DN26 12 kv 74.0 33.4-67.6 500-1000 - - 60.0 300 DN16 24 kv 46.0 19.1-36.8 120-300 50-300 - 38.0 170 DN26 24 kv 74.0 33.4-67.6 500-1000 400-1000 - 60.0 270 DN16 42 kv 46.0 19.1-36.8 - - 50-300 38.0 150 DN26 42 kv 74.0 33.4-67.6 - - 400-1000 60.0 250-4 -
9. Product Idenfication The 3M QS 2000E splice bodies are marked with supplier name, voltage class, body size and manufacturing codes for product traceability. QS 2000E 24 kv I DN16 06-16 A-1 Year of Production, Lot 10. Quality Assurance All raw-materials of the QS 2000E splice body are subject of a continous incoming Inspection. The printed product identification on the splice body allow a consistently traceability of all used in-process materials as well as process- and quality data. The 3M manufacturing site in Marcallo, Italy, is certified according to ISO 9001-2000 and ISO 14001. 11. Waste Disposal The supporting core is made from recyclable polypropylene material. 12. Storage Conditions The shelf life is specified with 3 years. Temperature: -40 C up to +50 C (short term peaks at 60 C max.) 13. Legal Requirements The 3M QS 2000E splice body does not require a Material Safety Data Sheet. It is not subject of the directive on the restriction of the use of certain hazardous substances in electrical and electronic equipment (RoHS) and the directive on waste electrical and electronic equipment (WEEE), however fulfils their requirements. 14. Supplier 3M Italy, Plant Marcallo Please note: This product may only be assembled by trained specialized personnel according to these assembly instructions. The preceding specifications are the result of in-depth research. They correspond to the state of our experience. A test by you will convince you of the excellent properties of the 3M products. Verify yourself whether these products are suitable for your purposes. All questions regarding a warranty liability are gned by our terms of sale, unless legal provisions provide differently. - 5-3M Deutschland GmbH