Medium Voltage Distribution Instruction for use January 2009 Air insulated swit

Medium Voltage Distribution Instruction for use January 2009 Air insulated switchboard Withdrawable switchgear SF6 or vaccum technology MCset 17.5 kV version 03 07897302EN.indd  Contents General 2 Glossary 2 Earthing switch control symbols 2 Moving part control symbols 3 Recommendations 3 Standard tightening torques 3 General description 4 Warning for readers 4 AD cubicle 4 TT1, TT2 cubicles 5 CL-GL cubicles 5 RHB, RHC cubicles 6 Withdrawable mobile part 6 Identification 9 Read the inscriptions on the front panel 9 Instructions for access to the inside of a cubicle 11 AD cubicle 11 Removing front protection cover plates 12 Removing the MV compartment separation sheet 13 Removing the manhole sheet 14 Removing and inserting fixed or withdrawable VTs 14 Access to lower compartment (cables, CT, earthing switch, surge arresters) 15 Accessing busbars 15 Accessing plug-in pins 16 Installation and operation recommendation 17 Steps for the tests 18 Voltage presence on MV cables 18 MV cable tests 18 Operating Instructions 20 Extracting or inserting the mobile part 20 Plugging in the mobile part 25 Withdrawing the mobile part 26 Closing the earthing switch 27 Opening the earthing switch 29 Plugging in VT fuses 31 Withdrawing VT fuses 32 Padlocking and preventing access using padlocks 33 Locking using locks (option) 35 Locking using an electromagnet (option) 36 Preventive and corrective maintenance 36 Corrective maintenance 37 Replacement of VT compartment fuses 37 Replacing the fans on 3600 A/ 4000 A cubicles 39 Replacing the capacitor 40 Annexe 41 Replacement of the voltage presence type VPIS 1 by type VPIS 2 and VPIS 2 by VPIS 2 41 Index 48  07897302EN.indd version 03 Open earthing switch mechanical indicator light. Operation position. Plug-in or withdrawal position. Plug-in prevention position. Locking possible. General Glossary UF Functionnal Unit (cubicle + mobile part + Sepam) AD Incomming / outgoing cubicle CL-GL Withdrawable line coupling cubicle TT Measurement and busbar earthing cubicle RHB Connection from the top by bar RHC Connection from the top by bar cable MTP Connection duct between an MCset cubicle and a MOTORPACT cubicle DI Fuse switch outgoing cubicle TT Voltage transformer TC Current transformer or current sensor VPIS Voltage Presence Indicating System LV Low voltage MV Voltage class, including levels 7.2 - 12 and 17.5 kV SMALT Earthing switch Mobile part LF Withdrawable circuit-breaker with SF6 breaking which is used in AD and CL cubicles Rollarc 400 SF6 breaking withdrawable contactor equipping the AD1 cubicle EVOLIS Withdrawable circuit-breaker with vacuum breaking which is used in AD and CL cubicles CTV1 Vacuum breaking withdrawable contactor equipping the AD1 cubicle OED Rack-in or rack-out and removal tool of the mobile parts on the ground Table d’extraction Extraction or insertion table without the removal tool of the mobile parts on the ground Note: this document is available for all the units ordered from the 2nd of April 2009. Earthing switch control symbols version 03 07897302EN.indd  Marking All type of equipment installation such as lamp or light are forbidden. Installation above the switchboard Recommendations Insertion / extraction position. “Withdrawn” position. “Plugged-in” position. Operation position. Position can be locked using paslocks. Closed earthing switch mechanical indicator light. General Moving part control symbols It is compulsory forbidden to walk on the parts bearing this marking. It is compulsory forbidden to remove the parts bearing this marking when the equipment is energised. It is necessary to have a height of ceiling H u 2.80 m to install a tunnel. Height (H) of ceiling for installation of an anti-arc or IPX1/IPX2 tunnel Application methods: The elastic washers placed on the external sides of the pads and busbars ensure better distribution of stress regarding screws tightened to the recommended torques. Screw Torque in Nm Ø 6 13 Ø 8 28 Ø 10 50 Ø 12 75 Ø 14 120 (non greased screws and bolts) Standard tightening torques  07897302EN.indd version 03 Incomer/Outgoer with withdrawable VT fuses Incomer/Outgoer without VT or with fixed VT A: LV compartment door B: protection, monitoring, control by Sepam C: compartment door mobile part D: position inspection windows of the mobile part E: operation and locking plate of the mobile part F: voltage indicators G: earthing switch operation and locking plate and padlocking of the mobile part H: access panel to connection compartment of MV cables or withdrawable VT fuses I: visualisation windows of cables or of VT fuse position J: operation and padlocking plate of withdrawable VT fuses K: fan compartment (on 3600 A / 4000 A) L: cable compartment (on 3600 A / 4000 A) AD1 630/1250 A AD2 630/1250 A AD3 2500/3150/3600/4000 A AD cubicle As the MCset range is very extensive and presents a vast number of front panel options, we have decided to present a Functional Unit presentation equipped with the maximum switchgear. Warning for readers General description version 03 07897302EN.indd 5 Bus riser cubicle Circuit-breaker coupling cubicle A: LV compartment door B: protection, monitoring, control by Sepam C: compartment door mobile part D: position inspection windows of the mobile part E: operation and locking plate of the mobile part F: voltage indicators G: earthing switch operation and locking plate and padlocking of the mobile part H: visualisation windows of cables or of VT fuse position I: access panel to withdrawable VT fuses and to the lower busbar compartments J : operation and padlocking plate of withdrawable VT fuses K: compartment door fixed busbar bridge L: fan compartment (on 3600 A / 4000 A). With upstream and downstream VT with withdrawable fuses CL-GL cubicles Voltage transformers without VT or with fixed VT Voltage transformers with withdrawable fuses TT1, TT2 cubicles A: LV compartment door B: protection, monitoring, control by Sepam C: visualisation windows D: voltage indicators E: earthing switch operation and locking plate and padlocking of the mobile part F: access panel to connection compartment of MV cables or withdrawable VT fuses G: visualisation windows of cables or of VT fuse position H: operation and padlocking plate of withdrawable VT fuses I: compartment door fixed busbar bridge. General description  07897302EN.indd version 03 Withdrawable mobile part A: LV compartment door B: protection, monitoring, control by Sepam C: compartment door mobile part D: position inspection windows of the mobile part E: operation and locking plate of the mobile part F: voltage indicators G: earthing switch operation and locking plate and padlocking of the mobile part H : acces panel to the busbars or to the withdrawable VT fuses I : visualisation windows of cables or of VT fuse position J : operation and padlocking plate of withdrawable VT fuses K : connection through the top using busbars (RHB) or cables (RHC) L : fan compartment (on 3600 A / 4000 A). RHB1, RHC1 630/1250 A RHB2, RHC2 630/1250 A RHB3, 2500/3150/3600/4000 A RHC3, 2500/3150 A RHB, RHC cubicles LF1 General description version 03 07897302EN.indd  Note: option available in 3 widths. Busbar earthing carriage on circuit-breaker base Note: available in 3 widths. Disconnector carriage LF2 LF3 General description  07897302EN.indd version 03 ROLLARC 400 CTV1 Note: available in 3 widths. Evolis Note: available in 3 widths. Busbar earthing carriage on Evolis base General description Evolis HP version 03 07897302EN.indd  A: procedure pictogram B: withdrawable mobile part C: earthing switch plate D: withdrawable fuse voltage transformer plate. Read the inscriptions on the front panel Ex : AD functional unit A: name of the cubicle B: manufacturer’s label C: characteristics, designations and serial number. LF withdrawable mobile part D: characteristics, designations and serial number. Rollarc or CTV1 withdrawable mobile part E: characteristics, designations and serial number. Evolis withdrawable mobile part F: characteristics, designations and serial number G: location of operating instructions (behind the cover). Identification General description 10 07897302EN.indd version 03 4 : earthing switch position selector 5 : opening for the insertion of the earthing switch operating handle G : voltage presence H : plug-in prevention selector switch L : mechanical indicator of earthing switch status M : location for plug-in prevention lock N : location for earthing switch locks. Earthing switch, voltage presence and plug-in prevention Cubicle 1: mechanical opening push-button 2: mobile part position selector 3: opening for inserting mobile part operating handle E: mechanical indicator light for indication of the mobile part position F: location for disconnector carriage lock (optional). Mobile part 1: mobile part operation 2: earthing switch operation. Procedure pictogram 6 : position selector switch for voltage transformer withdrawable fuses 7 : opening for the insertion of the voltage transformer withdrawable fuse operating handle. Withdrawable voltage transformer General description version 03 07897302EN.indd 11 AD cubicle Instructions for access to the inside of a cubicle Markings above Access 1 To the lower compartment via the maintenance space or duct (access same as for CT)). 2 Rear (dismantling is optional and has not been secured). 3 Facilitates access to cables (AD cubicle ), through the front (access same as for CT). 4 To the busbars (not possible for VT cubicle). 4 and 5 To the rear inter cubicle fastening screws. This sheet must be reassembled before installation of busbars. 6 uploads/s3/ mc123-guide.pdf

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