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SECTOS

SECTOS. SF 6 load break fault make switches for overhead networks. Distribution network. Sectos NXB + DTU. Open a circuit Close a circuit Open a Load Close a Fault. Definition of a Switching Device. A switch CAN A switch CAN NOT. Open a Fault.

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SECTOS

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  1. SECTOS SF6 load break fault make switches for overhead networks

  2. Distribution network Sectos NXB + DTU

  3. Open a circuit Close a circuit Open aLoad Close a Fault Definition of a Switching Device A switch CAN A switch CAN NOT • Open aFault A disconnectorMust provide a safe isolating distance

  4. Sectos Sectos switch-disconnector 12…24 kV (BIL max. 125 kV) 24…36 kV (BIL max. 170 kV) NXB technology NXA technology NXB NXBD NXA Motor up Manual Motor up Motor down Manual Conical epoxy bushings Outdoor epoxy bushings Conical epoxy bushings

  5. Sectos • NXA • 36kV, 630A • NXB • 12...24kV, 630A • NXBD • 12...24kV, 630A

  6. Sectos NXA • 36kV (38kV ANSI) • 2-position load break-fault make switch • single or double spring mechanism • Manual or motor operated • Manual operation by hook stick

  7. Sectos NXA Insulation level (IEC 60265-1 (1998)) Rated voltage 36 kV Power frequency withstand voltage, 60 sec wet - to earth and between phases 70 kV - across isolating distance 80 kV Lighting impulse withstand voltage - to earth and between phases 170 kV - across isolating distance 195 kV

  8. Sectos NXA Current ratings (IEC 60265-1 (1998)) Electrical endurance class E2 / E3 Rated normal current 630 A Mainly active load breaking current 630 A / 400 A Number of breaking operations CO 50 / 100 Closed loop breaking current 630 A Line-charging breaking current 40 A Cable-charging breaking current 40 A Earth fault breaking current 175 A Cable charging breaking current under earth fault conditions 87 A No-load transformer breaking current 20 A

  9. Sectos NXA Short-circuit ratings (IEC 60265-1 (1998)) Electrical endurance class E2 / E3 Short-time withstand current, Ith (3 s) 12,5 kA Peak withstand current, Idyn, peak 31,5 kA Short-circuit making current 31,5 / 25 kA Number of making operations 3 / 5 Mechanical endurance class M2 Number of close-open operations 5000 Ambient air temperature limits -40...+60 oC Filling pressure 1.5 bar (abs) Weight with plug-in insulators 95 kg

  10. Sectos NXB • 12, 17.5 and 24kv • 2- or 3-position load break-fault make switch • Single or double spring mechanism • Manual or motor operated • Manual operation by hook stick

  11. Sectos NXB Insulation level (IEC 60265-1 (1998)) Rated voltage kV 12 17.5 24 Power frequency withstand voltage, 60 sec wet - to earth and between phases kV 28 38 50- across isolating distance kV 32 45 60 Lighting impulse withstand voltage - to earth and between phases kV 75 95 125- across isolating distance kV 85 110 145

  12. Sectos NXB Current ratings (IEC 60265-1 (1998)) Rated normal current 630 A Mainly active load breaking current (100 CO) 630 A Line-charging breaking current 50 A Cable-charging breaking current 50 A Earth fault breaking current 50 A Cable charging breaking current under earth fault conditions 28 A No-load transformer breaking current 6.3 A

  13. Sectos NXB Short-circuit ratings (IEC 60265-1 (1998)) Short-time withstand current, Ith (3 s) 20 kA Peak withstand current, Idyn, peak 50 kA Short-circuit making current 50 kA Number of making operations n - main switch 50 kA (CL E2) 3 - main switch 31.5 kA (CL E3) 10 - earthing switch 50 kA (CL E2) 3 - earthing switch 31.5 kA (CL E3) 5

  14. Sectos NXB Mechanical endurance (IEC 60265-1 (1998)) Number of close-open operations n - main switch 5000 - earthing switch 1000 Ambient air temperature limits -40...+60 oC Filling pressure (abs) 1.5 bar Weight - cast resin insulators 81 kg - silicone insulators 82 kg - without bushing 71 kg

  15. Sectos NXBD • 12, 17.5 and 24kV • Two switches in same housing • two switched ways and one tapped way • 2- or 3-position load break-fault make switches • single or double spring mechanism • Manual operation by hook stick

  16. Sectos Rating plate Earthing terminal Gas filling valve Stainless steel housing (sealed pressure system, IEC 56) Silicone rubber insulators Series 400 Outer Cone bushings, M16 Hook-stick lever Reliable position indicator Terminal pad

  17. Details • Large position indicator symbols • Reflective colours • The reliable indication of the device fulfills the design and testing of IEC 129 A2

  18. Details • Mechanical housing made of aluminium alloy • Stainless steel spring mechanism • IPX7

  19. Details • Manual operation, single spring mechanism • Motor operation, single spring mechanism

  20. Details • Temperature compensated gas density switch as standard • Optional gas density gauge

  21. Details • Optional low gas locking mechanism

  22. Details • Stainless steel housing • AISI 304 • Laser cut, robot welded

  23. Details • Outer cone bushings, series 400 • Flexible plug-in silicone rubber insulators

  24. Details • Hook-stick lever (3 position switch) • Hook-stick lever (2 position switch) + optional locking device

  25. Accessories • Many different types of mounting accesories

  26. Accessories • Different types of terminal pads

  27. Current Transformer • Ring type transformer, installed around the bushings • Type: KOKU 072 G4 • Ratio: 600/1 A • Burden/Class 3 VA / 5P10 0.5 VA / 5P20 • Standards IEC 185

  28. DTU (Distribution Terminal Unit) • REC 501 • Digital inputs • 24 VDC battery • 1…2 contactor logic with local control push buttons and MCB’s • Place for communication device • Heating element • IP55 stainless steel enclosure

  29. DTU (Distribution Terminal Unit) • REC 523 • Digital inputs (15 pcs) • Analog inputs for measuring transformers and sensors (3…9pcs) • 24 VDC battery • 1…4 contactor logic with local control push buttons and MCB’s • Place for communication device • Heating element • IP55 stainless steel enclosure

  30. REC 5xx • REC 501 • REC 523

  31. Desired Signals Some key signals which are desired from a remotely controlled switch • Position: OPEN / CLOSE / EARTH • Operation: LOCAL / REMOTE • Gas level: Enough gas to permit safe operation • Battery status: enough to operate the switch and maintain communication • Cabinet temperature • Door alarm • Fault passage indicator • Fault passage counter • Measurements: Voltage, Current

  32. Remote-controlled equipment Network Control protocol Compact switchgear REC 5xx Public line Radio Radio Leased lines Network control system Optionalmodem Optical cable RMU Optional adapter Modem RS 232 Disconnector Adapter Modem Modem DLC DLC A GSM GSM A Radio modem Radio modem REC 5xx Communication media Protocols • LON / SPA interface ( REC 501 only SPA) • RS232 interface • Fibre-optic connection • Radio modem • Modem (option) for • - conventional radio telephone • - fixed or switched cable connection • - leased or public telephone lines • - GSM • DLC • SPA • LON (for REC 501 with adapter) • ANSI X3.28 • RP570 (REC 501) • IEC 870-5-101 • DNP 3.0 • MODBUS • Others...

  33. Feeder Automation Ready Solutions • Ready-made, fully tested packages • Sectos • DTU • REC 523 • From remotly controllable packages to automatic sectionalizer functions with current and voltage logic

  34. Feeder Automation Ready Solutions • Sectos NXB switch-disconnector • Motor operating device integrated in the switch • CT’s installed around the bushings • Cable for motor control , position indication and gas density monitoring • Control box type DTU131 including REC 523 • Optional VT’s for power supply and voltage measurement • Surge arresters recommended as an option

  35. Vegetation, nesting birds and other animals? • The sealed enclosure eliminates risks from environmental hazards and increases the reliability of electrical distribution systems. Solved by Sectos! Cali, Colombia

  36. Salt, sand, moisture and pollution? • The enclosure of stainless steel is hermetically sealed and corrosion resistant. The hydrophobic silicone rubber insulators are well suited even to the most extreme conditions. Solved by Sectos! Israel Norway China

  37. Ice, snow and high altitudes? • The switch inside the sealed tank in an inert SF6 gas atmosphere is insensitive to outside pressure changes. Sectos is also practically maintenance-free. Solved by Sectos! Finland Bolivia (3750 m)

  38. Tölby station outside Vaasa, Finland • SECTOS NXBD24. Double switch-disconnectors 2pcs. All 4 motors remote controlled from same DTU131 operating box using REC523 type of RTU. Before

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