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Hot – Pluggable AMS Connectors Specific service requirements Design Concept Development steps RIBE UG / 1 AMS • The idea is to avoid disconnectors by disconnecting standard connectors. • Some of the AMS connectors shall be operated under Hot line working conditions (145kV) = „Hot pluggable“ • Other connectors to be operated without voltage (275-400kV), (SubCon developed a wide range of these connector types but they are not in focus of todays presentation RIBE UG / 2 AMS – Hot pluggable connector till now • The current designs of clamps are just combinations of existing clamps with some added elements to make the parts captive • Current practices of operating of such connectors are quite difficult in handling RIBE UG / 3 All this does not take the reliability of these contacts into consideration ! • „normal“ connectors are NOT designed to be dismatled often • The arc during operation might damage the contact surfaces • It is not possible to brush/clean the contact surfaces of live parts of clamp • The necessary high bolt torque settings hardly can be applied by isolated rods. RIBE UG / 4 The technical requirement for AMS connectors • Electrical Contact to be designed properly taking the following into consideration to avoid Hot-spots: - multiple operation - low bolt forces (tightening with rods !) - difficulties in preparation • Ensure safe and easy handling with rods by: - bolts with low torque settings from bottom side - captive components - centering help • Controlled Arc behavior by defined arcing point RIBE UG / 5 • We would like to take this opportunity to share our idea, to discuss and to optimize the design. • The straight connector presented today shall be understand as a typical solution, the central AMS-element of course can be applied to multiple designs and connector arrangements according to customer demands RIBE UG / 6 Installation RIBE UG / 7 AMS – new features Commutation spring Lift-up cover Soft pin (to be brushed) Manipulation flats Centering Cone Serrated contact surface Low-Torque bolts 3D RIBE UG / 8 • We woud like to thank our Swedish customers, partners and friends for their support • We are open for further recommendations, questions and remarks, please contact Raphael Madlener Libor Bily [email protected] [email protected] +43 5572 372 674 -22 +43 5572 372 674 -14 Thank you for your attention ! RIBE UG / 9