Innovation at every level Medium voltage switchgear with withdrawable circuit breakers MCset: the range of functional units MCSet The MCset range includes 13 functional units, based on 4 functions. Incomer/Feeder Busbar compartment This section connects the switchboard cubicles via busbars. Low voltage cabinet This section includes: b the Sepam protection and control unit, b the low voltage components, b the thermal diagnosis module. Choosing for tranquility 1 busbar 2 LV compartment 3 withdrawable part 4 current sensors 5 earthing switch 6 voltage transformers 7 MV connections b line (LI-B, LF-B) b transformer (TI-B, TF-B, TF-S) b generator (GI-B) Web enabled Power & Control Feeder (motor, capacitor) 1 busbar 2 LV compartment 3 withdrawable b motor (MF-B, MF-C) b capacitor (CB-B, CB-C) fuse-contactor 4 current sensors 5 earthing switch 6 voltage transformers 7 MV connections Bus-sectionning Switchgear compartment This section contains the medium voltage protection devices: b vacuum or SF6 breaking devices (circuit breakers, fuse-contactors), b lever-type propulsion mechanism for racking in-out, b interlocks to anchor the withdrawable part. 1 busbar 2 LV compartment 3 withdrawable part 4 current sensors 5 voltage transformers b switchboard (BS-B) b substation (SS-B) 1 busbar 2 LV compartment 3 earthing switch 4 voltage transformers b switchboard (BB-V) Cable compartment This compartment, located in the lower part of the cubicle, includes: b the earthing switch, b the current sensors (LV type CTs, magnetic or non-magnetic transformers) and voltage transformers. 89 boulevard F. Roosevelt F - 92500 Rueil Malmaison France Tel : + 33 (0)1 41 29 85 00 Fax : + 33 (0)1 41 29 89 01 http://www.schneider-electric.com ART73966 As standard, specification and design change from time to time, please ask for confirmation of the information given in this publication. This document has been printed on ecological paper. Publishing: Schneider Electric Industries SAS Design: Paco Annecy, Esquisse Photos: Schneider Electric Industries SAS Printing: Imprimerie du Pont de Claix VP0846E Schneider Electric Industrie SAS Schneider Electric Industries SAS - All right reserved. Metering and busbar earthing 07/2004 MCset is an indoor switchgear assembly that provides maximum user safety. It is intended to meet all electrical distribution needs from 1 to 24kV and incorporates a set of innovative solutions designed using proven techniques: b high-performance breaking devices ( SF6 or Vacuum), b digital protection and control system, b a range of cubicles designed and tested for internal arc resistance. The answer to all your needs Recognized reliability Safety comes first MCset: a universal solution MCset: ISO 9001 certified quality MCset: high-level protection of people MCset is the result of experience acquired worldwide and provides you with a high level of safety and reliability. It is particulary suitable for the MV section of HV/MV substations and high power MV/MV substations. MCset meets MV substation supply needs for all applications. Each Schneider Electric site has a functional department whose main mission is to check quality and ensure compliance with the standards. This system gives you the guarantee of consistent quality, whatever the manufacturing site, anywhere in the world. The reliability achieved by the system is recognized by a large number of customers and officially approved organizations. MCset is designed to protect users through its resistance to faults due to internal arcing. MCset offers several options for switchboard layouts: b 3-sided internal arc protection: installation of a switchboard against a wall, b 4-sided internal arc protection: installation of a switchboard requiring rear access in the middle of a room. MCset: outstanding references With its strong reputation, MCset has become over time the switchgear trusted by all those who supply the most delicate installations and need to ensure uninterrupted service: b oil industry v Sincor (Total-Pdvsa), Venezuela v Pertamina, Indonesia v Exxon, Netherlands b chemical industry v Pequiven Jose, Venezuela v Janssen Pharmaceutica, Belgium b gas industry v Technip, Turkey v Bhp steele, Australia b metallurgy v Alba, Bahrain v Sicartsa, Mexico b mining v Western mining, Australia v Mersin Soda Sanayii, Turkey b cement plants v Bursa Cimento, Turkey v Cruz azul, Venezuela b water treatment v Direction general de construccion y obras hidraulicas, Mexico v Sagep, France b airports v Brussels Int. Airport company, Belgium b hospitals v Cps, Saudi Arabia b Internet data centers v Global Switch, Australia b marine v Finaval/Marnavi-I, Italy v P&O North Sea, United Kingdom v Vietxopetro-VT, Vietnam The strict, measured implementation of the system has been acknowledged by an independant organization: the AFAQ (French Quality Assurance Association). MCset’s quality system for design and manufacturing is certified according to the requirements of the ISO 9001: 2000 quality assurance standards. MCset: simple for everyone to use metal-clad enclosed switchgear MCset: through, systematic testing During manufacturing, each cubicle undergoes systematic routine testing aimed at checking quality and conformity: b testing of circuit breaker and contactor tightness, b measurement of closing and opening speeds, b measurement of operating torque, b dielectric testing, b testing of safety systems and interlocks, b testing of low voltage components, b conformity of drawing and diagrams. The results are recorded and initialed by the quality control department on the test certificate for each device. MCset: main characteristics rated voltage (kV) insulation level 50 Hz/1 mn (kV rms) 1,2/50 µs (kV peak) 7,2 20 60 maximun nominal current and short-time withstand current(1) functional unit with SF6 circuit breaker Ith max (kA/3 s) 40 In max (A) 3900 functional unit with SF6 contactor Ith max (kA) 50 In max (A) 250 functional unit with vacuum circuit breaker Ith max (kA) 40 In max (A) 2500 functional unit with vacuum circuit Ith max (kA) 50 In max (A) 250 12 28 75 17,5 38 95 24 50 125 40 3900 31,5 3900 31,5 2500 50 200 40 2500 Since the MCset range comprises, each section is isolated from the others by earthed, metal partitions. This means that servicing can be carried out in one of the compartments while the others are still energized. The earthing switch has full making capacity and provides total user protection in the event of closing on a dead short-circuit. MCset: safety operation The risks of operating errors are rigorously ruled out with MCset. In fact, the range offers an unprecedented level of user protection against risks that might otherwise occur during operation. To summarize, the MCset design gives priority to 4 points: b simple use, b clear, reliable status information, b safety interlocking, b safety systems that prevent all unauthorized operations. MCset: reduced maintenance 40 2500 (1) For functional units equipped with circuit breakers or fuse-contactors, the breaking capacity is equal to the short-time withstand current. In all cases, the devices’ making capacity is equal to 2.5 times the short-time withstand current. Specially designed for MCset, an innovative thermal diagnosis system continuously monitors the temperature rise, using optical fibres and sensors installed at the heart of the sensitive areas: b monitoring of temperature rise in busbars, cable connectors, switchgear, b indication of the fault zone, b 2 trip thresholds are available. This system reduces the probability of failure and reduces maintenance time.
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