WS Gas-Insulated Switchgear up to 36 kv

Transcription

1 MEDIUM VOLTAGE SWITCHGEAR >> WS Gas-Insulated Switchgear up to 36 kv Installation Instructions No Edition 01/01 Installation Instructions T&D

2 IMPORTANT NOTE The Operating Instructions, which are exclusively valid are always supplied by AREVA Sachsenwerk GmbH together with the product in question. Our products may only be commissioned, operated, serviced, repaired or decommissioned together with Operating Instructions which have been directly enclosed to the product in question by the factory. On the other hand, this electronic version of the operating instructions is provided to the customer at his/her request for information only. None of our products may be commissioned, operated, serviced, repaired or decommissioned on the basis of this electronic version. Non-compliance with this instruction may entail serious damage to the product, the objects pertaining to it, as well as a health hazard or mortal danger. AREVA Sachsenwerk GmbH shall not be held liable for any such damage. Manufacturer: AREVA Sachsenwerk GmbH Rathenaustraße 2 D Regensburg Phone +49 (0)9 41/ Fax +49 (0)9 41/ Service: Should you have any queries as to our service, please do not hesitate to contact: AREVA Sachsenwerk GmbH Service-Center D Regensburg Phone +49 (0)9 41/ Fax +49 (0)9 41/ AREVA Sachsenwerk GmbH

3 Table of Contents 1 Regulations and provisions 4 2 Design 5 3 Installation of the first switchgear panel 6 4 Lining up additional panels 7 5 Screw-fastening the switchgear panels 8 6 Installation of the intermediate frame for one or two current transformer modules in line with the busbar 9 6a Installation of the intermediate frame on the busbar end for busbar earthing switch and single or double cable connection 10 6b Installation of intermediate frame on busbar end for one or two modules with fully insulated busbar connection 11 7 Installation of side panel 12 8 Fastening the panels to the foundation bar 13 9 Installation of busbar sections Gas compartment and gas line concept Gas compartment connections Installation of IGIS Pressure transmitters Activating desiccant, screwfastening mounting cover Evacuation of the busbar gas compartments, filling gas compartments to rated filling pressure Gas pressure monitoring via pressure gauge Screwing down the earth conductor, connecting external control lines High-voltage connection Screw-fastening the cover plates (rear side of panel) Final operations before commissioning Appendix 31 3

4 1 Regulations and Provisions Only specialized electricians (as provided by DIN or VDE 1000, sect. 6.1) are allowed to install, assemble and connect the switchgear. The following regulations must be observed with regard to transport, installation, assembly and connection of the switchgear: DIN VDE 0101 DIN EN or the IEC Publication (supersedes VDE 0670 part 6) Provisions for the prevention of accidents BGV A2 of the industrial injuries insurance institution "Precision mechanics and electrical engineering" Code of practice "SF 6 switchgear" of the industrial injuries insurance institution "Precision mechanics and electrical engineering". Operators outside of the Federal Republic of Germany should: - consider these provisions for the prevention of accidents and regulations as a basis; - apply the appropriate locally valid provisions; - take any measures which might become necessary on site. Packaging and transport Delivery is effected in terms of single switchgear panels ready for connection. Bus couplers, cross couplers and busbar sectionalizers are, as a rule, delivered as a unit (two panels). Ring circuits connecting the various panels are established on site. Open packaging. Panels on pallets protected by PE film. For sea-worthy export, the panels are packed in sealed aluminium film with desiccant and closed wooden base (also for container transport). In case of air transport, the panels are packaged in wooden crates with closed wooden bases and with a protective PE film hood (dust protection) or in wooden crates, also with closed wooden base, however without protective hoods (dust protection). Correct execution of the! assembly is a prerequisite for the switchgear's operational reliability and long service life. The information given in these installation instructions must be complied with. Noncompliance with these instructions compromises the warranty claims! 4

5 2 Design Busbar compartment 2 Connection to gas compartment Panel screw-fastening Desiccant Busbar compartment 1 Connection to gas compartment Panel screw-fastening Desiccant Earth conductor Panel supporting structure Caps High-voltage terminal Cover plate Cable iron Panel fastening Low-voltage cubicle External control lines 1 Areas of the various assembly steps and attachments Design: WSB, double busbar 5

6 3 Installation of the first switchgear panel Installation of a switchgear panel with transport device Insert transport device (included under "transport aids" in Accessories) in panel supporting structure, and screw-fasten. Lifting Supporting structure Move panel by rolling it! towards the installation area over the foundation bar structure parallel using the transport device. Pay attention to flooring ducts - risk of accidents! To reduce the accident hazard, have the panel rolled to the installation area over the foundation bar structure by two fitters. 2 Insert and screw-fasten transport device in panel supporting structure refer to installation Lower panel using the transport device. Release transport device from the panel supporting structure. For the distance dimension between wall and panel, please refer to the installation plan. Align the rear of the panel supporting structure to the outer edge of the foundation bar structure. Do not yet screw-fasten the panel to the foundation bar structure. This would rule out subsequent alignment or readjustment of the panel. 3 Transport of panel to installation surface Remove transport cover 4 Installation of first panel Rear of panel flush with foundation bar Remove mounting cover 5 Remove transport covers and mounting cover 6

7 4 Lining up additional panels Insert adjustable bridge elements Adjustable bridge elements under "transport aids" in accessories. Place bridge elements over the foundation bar design, adjust and clamp one side of the bridge elements with the foundation bar (wing nut screw coupling). Roll the individual panels! to the installation area using the transport device, over the bridge elements and parallel over the foundation bar structure. Pay attention to flooring ducts! Risk of accidents. Transport device 6 Lining up additional panels Transport trolley Adjustable bridge elements Foundation bar Move panel by rolling it towards the panel already installed leaving a distance of approx. 0.5 m. 4. Coat sealing surfaces (refer to sect. 21). 5. Lower panel using the transport device. Release transport device from the panel supporting structure. 6. Lift panel via the four setscrews in the panel supporting structure. 7. Insert transport trolley (included under "transport aids" in accessories) in panel supporting structure. Engage four connecting pins on the transport trolley in the left and right angular brackets of the panel supporting structure. Setscrew 7 Lifting the panel via the four setscrews Panel supporting structure Panel supporting structure 8 Insert transport trolley in panel supporting structure 7

8 5 Screw-fastening the switchgear panels Coat the sealing surfaces between the busbar compartments and the toroidal sealing ring with SF 6 multipurpose lubricant MS (refer to sect. 21). Insert toroidal sealing ring. Push panel to the panel already installed. Lift panel via the four setscrews in the panel supporting structure. 4. Release transport trolley from the panel supporting structure. 5. Align panel via the four setscrews in the panel supporting structure (refer to Fig. 7) with the busbar sealing surfaces. 6. Align panels with the panel front (front cover / circuit-breaker area) using a rule. 7. Screw-fasten panels to each other along the busbar sealing surfaces: - without busbar cladding: Tighten screw couplings M8 with a torque of 36 ± 4 Nm - with busbar cladding: Tighten screw coupling M8 (not greased) with a torque of Nm. 9 Panel screw-fastening Panel 2 10 Panel screw-fastening (with busbar compartment cladding) Sealing surfaces Sealing surfaces Sealing surfaces Sealing ring M 8 x Nm Sealing ring Panel 1 Panel 1 Panel 2 M 8 x ± 4 Nm 11 Panel screw-fastening (without busbar compartment cladding) SF 6 -Multi-purpose lubricant MS 8

9 6 Installation of intermediate frame for one or two current transformer modules in line with the busbar Individual components of intermediate frame in switchgear accessories. Screw-fasten current transformer module with left and right adjacent panel. Screw-fasten individual components of intermediate frame to each other. Tighten screw couplings M8 x 16 with a torque of 36 ± 4 Nm. 4. "Draw in " setting nuts M8 to the front longitudinal sections ➀ and ➁. Screw-fasten front covers. Tighten screw couplings M8 x 16 with a torque of 36 ± 4 Nm. Insert magnetic shims. 5. Drill bore-holes Ø 10 H11 in panel supporting structure of the left and right adjacent panel. "Draw in" setting nuts M8 to the "inside" of the adjacent panels. 6. Slip completely screw-fastened intermediate frame between the two panels. Align intermediate frame with front covers along the lined-up switchgear units. 7. Insert spacers (12 mm) and washers (1 mm) between the lower longitudinal sections ➃ and ➄ and the panel supporting structure. Tighten screw couplings M8 with a torque of 36 ± 4 Nm. 8. Screw-fasten upper longitudinal sections ➅ and ➆ via two angular brackets each to the left and right adjacent panel. Tighten screw couplings M8 on front and rear jack rings with a torque of 36 ± 4 Nm. Tighten screw couplings M10 on the upper longitudinal section with a torque of 72 ± 7 Nm. A10 washers Jack ring 12 Top mounting, front jack ring 14 Intermediate frame M 8 x 25 M 10 x 20 Spacer M 8 x 16 drilling Ø 10 H11 Washer Panel supporting structure 15 Bottom mounting, panel supporting structure A10 washers M 10 x 20 M 8 x Top mounting, rear jack ring ➀➁ Front longit. sections ➂ Lower transv. section ➃➄ Lower longit. sections ➅➆ Upper longit. sections ➇➈ Upper transv. sections 9

10 6a Installation of the intermediate frame on the busbar end for busbar earthing switch and single or double cable connection Individual components of intermediate frame in switchgear accessories. Screw-fasten individual components of intermediate frame to each other. Tighten screw couplings M8 x 16 with a torque of 36 ± 4 Nm. "Draw in " setting nuts M8 to the front longitudinal sections. Screwfasten front covers. Tighten screw couplings M8 x 16 with a torque of 36 ± 4 Nm. Insert magnetic shims. 4. Drill bore-holes Ø 10 H11 in panel supporting structure of the adjacent panel. "Draw in" setting nuts M8 to the "inside" of the adjacent panel. Insert spacers (12 mm) and washers (1 mm) between the lower longitudinal section and the panel supporting structure. Set in screws M 8 x Align intermediate frame with front covers along the lined-up switchgear units. Tighten screw couplings M8 on the lower longitudinal section with a torque of 36 ± 4 Nm. 6. Screw-fasten the upper longitudinal section ➇ via two angular brackets to the adjacent panel. Tighten screw couplings M8 on front and rear jack ring with a torque of 36 ± 4 Nm. Tighten screw couplings M10 on the upper longitudinal section ➇ with a torque of 72 ± 7 Nm. A10 washers Jack ring 16 Top mounting, front jack ring refer to installation of side panel 18 Installation of intermediate frame M 8 x 25 M 8 x 16 Spacer Washer Panel supporting structure A10 washers M 10 x 20 M 10 x 20 drilling Ø 10 H11 17 Top mounting, rear jack ring ➀ ➁ M 8 x 16 Side frame Longitudinal section ➂➃ Lower transv. sections ➄ Lower longit. section ➅➆ Upper transv. sections ➇ Upper longit. section 19 Bottom mounting, panel supporting structure 10

11 6b Installation of intermediate frame on busbar end for one or two functional units with fully insulated busbar connection Jack ring M 8 x 16 Individual components of intermediate frame in switchgear accessories. Screw-fasten functional unit for fully insulated busbar connection. Fasten side frames ➀ and ➁, lower transverse sections ➂ and ➃, upper transverse sections ➄ and ➅ and the intermediate bar ➆ together. Tighten screw couplings M8 x 16 with a torque of 36 ± 4 Nm. 4. "Draw in " setting nuts M8 to the front longitudinal sections. Screwfasten front covers. Tighten screw couplings M8 x 16 with a torque of 36 ± 4 Nm. Insert magnetic shims. 5. Drill boreholes Ø 11 in panel supporting structure. Insert screw couplings M8 x Align intermediate frame with front covers along the lined-up switchgear units. Tighten screw couplings M8 on the lower longitudinal section and the intermediate bar ➆ with a torque of 36 ± 4 Nm. 7. Screw-fasten the upper longitudinal section ➇ via an angular bracket to the adjacent panel. Tighten screw couplings M8 on front jack ring with a torque of 36 ± 4 Nm. Tighten screw couplings M10 on the upper longitudinal section ➇ with a torque of 72 ± 7 Nm. 8. Screw-fasten transverse bracket ➈. Tighten screw couplings M8 x 16 for connection to the functional unit with a torque of 36 ± 4 Nm. 9. Insert intermediate bar ➉ in side frame ➀ and screw-fasten it. A10 washers 20 Top mounting, front jack ring refer to installation of side panel M 8 x 16 washers A10 21 Installation of intermediate frame Intermed. bar M 10 x refer to installation of side Panel supp. structure 22 Bottom mounting, intermediate bar, panel supporting struture M 8 x 50 drilling Ø 10 H11 ➀➁ Side frame ➂➃ Lower transv. sections ➄➅ Upper transv. sections ➆ Intermediate bar ➇ Upper longit. section ➈ Transverse bracket ➉ Intermediate bar 11 U section to installation of side panel 11

12 7 Installation of side panel Side panel, cover, angular bracket, U section and hardware in switchgear accessories. Drill bore-holes Ø 10 H11 in panel supporting structure ➀. "Draw in" setting nuts M8 to the "inside" of the adjacent panel. Screw-down U section ➁. Tighten screw couplings M8 with a torque of 36 ± 4 Nm. "Draw in" setting nuts M8 to U section. 4. Screw-fasten clip to rear and front jack ring. Tighten screw couplings M8 with a torque of 36 ± 4 Nm. 5. Screw-fasten angular bracket ➂ to the two clips. Tighten screw couplings M10 with a torque of 72 ± 7 Nm. "Draw in" setting nuts M8 to angular bracket. 6. Screw-fasten side panel ➃. Tighten screw couplings M8 with a torque of 36 ± 4 Nm. 7. Screw-fasten cover ➄. Tighten screw couplings M8 with a torque of 36 ± 4 Nm. 8. If the side panel is being installed with IGIS module, the cover ➄ is screwed down after laying the transmitter signal lines. 9. Close boreholes in side panel and cover using caps Ø 3 M 10 x Top mounting, front jack ring 25 Installation of side panel M 8 x 16 Setting nuts Jack ring drilling Ø 10 H11 A10 washers M 10 x Top mounting, rear jack ring ➀ Panel supporting structure ➁ U section ➂ Angular bracket ➃ Side wall ➄ Cover M 8 x 12 Side panel Panel supp. structure 26 Bottom mounting, panel supporting structure 12

13 8 Fastening the panels to the foundation bar Before fastening the panel, make sure that all the previous steps have been accomplished. Drill four fastening points Ø 8.5 mm through the panel supporting structure in the foundation bar. Tap a thread M10. Slip any required shims in directly besides the fastening points. Relieve setscrews (turn back). 4. Screw-fasten panel supporting structure with foundation bar. Tighten screw couplings M10 with a minimum torque of 40 Nm (applies only to ratchet bolts with a sufficient thread depth of 8 mm). M 10 Fastening points 27 Fastening the panels to the foundation bar Panel supporting structure 13

14 9 Installation of busbar sections Standard panel (Busbar rated (service) current up to 2500 A) Bushings, busbar sections and hardware in switchgear accessories. In case of busbar compartment cladding, coat grooves in bushing, in flange, and toroidal sealing rings with SF 6 multi-purpose lubricant MS (refer to sect. 21). The individual cladded compartments are sealed optimally against each other by means of toroidal sealing rings and coating with SF 6 multi-purpose lubricant MS. Insert toroidal sealing rings. Screw down bushings and flanges. Tighten screw couplings M6 with a torque of 8 ± 1 Nm. Coat contact surfaces with contact lubricant KL (refer to sect. 21). Contact surfaces must not get into contact with screw locking compound "Loctite". If the two agents are mixed, contact will be impaired. 4. Wet threads with screw locking compound "Loctite" (refer to sect. 21). 5. Insert busbar sections, taking account of the installation position of the two disc springs located on either side, "center" between the bushings and screw down. Tighten screw couplings M10 with a torque of 10 Nm. 6. The busbar is screw-fastened to a post insulator on the left and right end panels, and in the case of bus coupler panels. 7. Check disconnector blades for "hitting" the fixed contact on the busbar (for switching on the disconnector, refer to the operating instructions, section 4.2). Due to Contact lubricant KL SF 6 -Multi-purpose lubricant MS Screw locking compound "Loctite" 5 +2 / 4 M 8 x ± 2 Nm M 6 x 25 8 ± 1 Nm the jerky movements of the disconnector blades, it may not be possible to adhere to the dimension 5 +2 / -4. The following setting is admissible in these cases: If the distance at 9.5 revolutions of the actuating crank amounts to 10 mm, then the disconnector blade may touch the stop of the contact during the last 0.5 revolution of the actuating crank. 1) 1250/1600 A 1250 A Disc springs 2000/2500 A 1) only with BB comp. cladding M 10 x Nm 28 Installation of busbar sections; drawing shows central panel, viewed from the mounting cover 14

15 Supplementary panel (Current transformer module in line with the busbar) Bushings, busbar sections and hardware in switchgear accessories. Remove mounting cover from the chamber. Screw down bushings and flanges. 4. Coat contact surfaces with contact lubricant KL (refer to sect. 21). Contact surfaces must not get into contact with screw locking compound "Loctite". 5. Wet threads with screw locking compound "Loctite" (refer to sect. 21). 6. Insert busbar sections, "center" between the bushings and screw down. Transition resistance measurement of busbar screw fastening Refer to the instructions of the transistance resistance meter's manufacturer (refer to sect. 21). Measure transition resistance R between the individual busbar sections with 100 A DC. Approximate values Busbar rated (service) current [A] / / Resistance R [µω] The measured resistance values should be comparable. If one value exceeds the average of the other measured values by max. 20 % or more, undo busbar screw fastening; clean contact surfaces carefully and repeat the mounting procedure. 15

16 10 Gas compartment and gas line concept The gas compartments of circuitbreakers and busbars are separated. The cladded compartments of the individual panels are interconnected by piping and, if necessary, can be disconnected from the gas compartment of the switchgear in question. Non-cladded gas compartments, e.g. busbar gas compartment of the WSA type and circuit-breaker gas compartment of the WSA without cladding, form a common gas compartment. At the left end panel, or - in case of switchgear equipped with bus coupler - on the left and right end panel, pressure transmitters are installed which transmit the measured values to IGIS via signal lines. A gas compartment diagram is available in the switchgear's "info" tray. Drucktransmitter P2 P2 Pressure transmitter P1 P2 = Leistungsschaltergasraum P1 = Sammelschienengasraum P2 = Circuit-breaker gas compartment P1 = Busbar gas compartment 29 Gas compartments of WSA. Busbar compartments not cladded Pressure Drucktransmitter P3 P2 P2 P1 P1 P3 = Leistungsschaltergasraum P1 = Sammelschiene 1-Gasraum P2 P3 = Sammelschiene Circuit-breaker gas 2-Gasraum compartment P1 = Busbar 1 - gas compartment P2 = Busbar 2 - gas compartment 30 Gas compartments in case of WSB. The gas compartments of the switchgear panels are connected by piping and can be disconnected from the switchgear's gas compartments, if necessary. 16

17 11 Gas compartment connections Connecting busbar gas lines (only in case of busbar compartment cladding) Refer to gas compartment diagram. Remove yellow protective caps. Screw-fasten "bus lines" of the individual busbar gas compartments to one another taking account of the gas compartment diagram. Minimum tightening torque for gas line screw coupling: 20 Nm. To prepare for evacuation of the busbar gas compartments, disconnect all gas lines connecting the switchgear's busbar chambers to the "bus line". ➁ Busbar ➂ Circuit-breaker 31 Gas line, panel WSA with busbar compartment cladding Connecting circuitbreaker gas lines Remove yellow protective caps. Screw-fasten "bus lines" of the individual circuit-breaker gas compartments to one another taking account of the gas compartment diagram. Connect circuit-breaker gas lines of the individual circuit-breaker chambers with the "bus line". Minimum tightening torque for gas line screw coupling: 20 Nm. ➂ Circuit-breaker 32 Gas line, panel WSA without busbar compartment cladding ➀ Busbar 1 ➁ Busbar 2 ➂ Circuit-breaker 33 Gas line, panel WSB 17

18 12 Installation of IGIS IGIS and hardware are included in separate packaging in the switchgear accessories. Open flap for IGIS (magnetic plate). Insert IGIS and attach the clips on the left and right rear sides; tighten by means of a screw driver. 4. Wiring to Phoenix plug-and-socket connections according to the switchgear's circuit diagrams. 5. Connectors of the signal cables to the pressure measuring points in question on the IGIS (P1 - P3). 6. Close non-used inputs using a cover. Side panel Seitenwand Signalleitungen lines to the zu den Drucktransmittern pressure 34 Installation and connection of the IGIS Securing Befestigungsklammern clamps left-hand links und and rechts right-hand 18

19 13 Pressure transmitter The pressure transmitters are included in separate packaging in the switchgear accessories. Remove the caps from the filling and extraction valves taking account of the gas compartment diagram, and fasten the pre-assembled pressure transmitters. Coat sealing rings with SF 6 multi-purpose lubricant MS (refer to sect. 21). Lay signal line in cable duct of the side panel. 4. Non-used cable lengths must be wound up and fastened to the side panel using cable clips. 5. Connect signal lines to IGIS. 35 Pressure transmitter ➀ ➁ 36 Mounting of pressure transmitter, Example: WSA with busbar compartment cladding ➀ Pressure transmitter for circuit-breaker gas compartment ➁ Pressure transmitter for busbar gas compartment 19

20 14 Activating the desiccant (molecular sieve), screwfastening the mounting cover Activate desiccant Clean busbar gas compartments including mounting parts, removing loose particles such as abrasion, paint, dust or precipitated moisture by means of a dry, non-fibrous cloth. The desiccant bag is located below the mounting orifice underneath a cover. Tear open polybag by piercing several holes in the cover using a chisel or a similar tool. Trockenmittelbeutel Desiccant bag Cover Abdeckung 37 Activating the desiccant Screw-fasten mounting cover The welding bolts on the busbar chamber must not get into contact with SF 6 multi-purpose lubricant MS. Coat the sealing surfaces on the busbar chamber, the mounting cover and the toroidal sealing ring with SF 6 multi-purpose lubricant MS (refer to sect. 21). Insert toroidal sealing ring. Screw-fasten mounting cover. The following tightening torques apply to screw couplings M8: - Steel cover, hex. nut with ratchet / -1 Nm. - Aluminium cooler cover, hex. nut without ratchet 8 +2 / -1 Nm. not lubricated SF 6 -Mehrzweck-Schmierstoff MS SF 6 -Multi-purpose lubricant MS 38 Screw-fastening the mounting cover mounting cover 20

21 15 Evacuation of the busbar gas compartments, filling gas compartments to rated filling pressure Evacuation of the busbar gas compartments Refer to gas compartment diagram. Normally, the filling and extraction valves for the busbar gas compartments and the circuitbreaker gas compartments are located on the last but one panel.! The switchgear must not yet be energized! Remove cap from extraction valve. Connect service instrument (refer to sect. 21). Pre-evacuate to 15 mbar. Subsequently, evacuate the busbar gas compartments of the entire switchgear to 1 mbar. Leistungsschalter- Circuit-breaker Füll- Filling und and gasraum compartment Absaugventil extraction valve Abdeckkappe Abdeckkappe 39 Filling and extraction valve for the circuitbreaker compartment Sammelschienengasraum Busbar compartment Filling Füll- andund extraction Absaugventil valve Filling the busbar gas compartments to the rated filling pressure Rated filling pressure, refer to name plate: p r 0.30 bar, p r 0.50 bar or p r 0.75 bar Switch service instrument over to "filling" mode. Connect gas filling device (refer to sect. 21). Insert insulating gas until the rated filling pressure is reached. Watch rated filling pressure on secondary pressure gauge range 0 to 6 bar of the gas refilling device. Disconnect gas refilling device. Filling the circuit-breaker gas compartments to the rated filling pressure Rated filling pressure, refer to name plate. Remove cap from filling valve. Connect service instrument ("filling"mode). Insert insulating gas until the rated filling pressure is reached. Watch rated filling pressure on secondary pressure gauge range 0 to 6 bar of the gas refilling device. Disconnect gas refilling device. Screw-fasten cap on filling valve. After approx. 24 hours: Leakage test by means of leakage detector A test for leakage is required whenever gas-tight flange couplings have been made. Use a leakage detector (refer to sect. 21). Observe the instructions of the leakage detector's manufacturer. Check the flange couplings mounted during installation by holding the leakage detector close to them. The flange coupling's tightness is ensured if the leakage detector does not react. Dew point measurement of the insulating gas Use a dew point measuring device (refer to sect. 21). Observe the instructions of the manufacturer of the dew point measuring device. Connect dew point measuring device to a filling valve. The measuring procedure is described in the operating instructions for the dew point measuring device. The dew point temperature must not be higher than 10 C. Disconnect dew point measuring device. Screw-fasten cap on filling valve. Abdeckkappe Cap Schaltfeldrückwand switchgear Rear wall of panel 40 Filling and extraction valve for busbar gas compartment 21

22 16 Gas pressure monitoring via pressure gauge - As an alternative to the IGIS gas compartment monitoring system, there are switchgear models with ambient-temperature compensated pressure gauges. - Each circuit-breaker compartment and the combined busbar gas compartments are connected to a pressure gauge each. After activating the desiccant, connect the mounting cover (refer to sect. 14, screw-fastening the mounting cover), remove the cap from the extraction valve (Fig. 41 ➃). Connect service instrument. Pre-evacuate the busbar gas compartment in question without delay to 15 mbar. Subsequently, evacuate the busbar gas compartments of the entire switchgear to 1 mbar. Filling the circuit-breaker gas compartments to rated filling pressure Rated filling pressure, refer to rate plate. Remove cover from filling valve (Fig. 41➁), connect service instrument ("filling mode"). Insert insulating gas until the rated filling pressure is reached. Disconnect gas refilling device. Screw-fasten cap to filling valve. Filling the busbar gas compartments to the rated filling pressure Rated filling pressure, refer to name plate: p r 0.30 bar, p r 0.50 bar or p r 0.75 bar Switch service instrument over to "filling" mode. Connect gas refilling device. Insert insulating gas until the rated filling pressure is reached. Watch rated filling pressure on the pressure gauge. Disconnect gas refilling device. Screw-fasten cap on filling valve. ➀ Pressure gauge (pressure measuring device) for circuit-breaker gas compartment ➁ Filling and extraction valve with cap (circuit-breaker gas compartment) ➂ Pressure gauge for busbar section, right-hand ➃ Filling and extraction valve with cap (busbar section, right-hand) 41 Pressure monitoring front shutter ➀ Gas line, circuit-breaker gas compartment ➁ Gas line, busbar gas compartment ➂ Feeder, low-voltage cubicle rear side wall right 42 Pressure monitoring 22

23 Pressure indication on pressure gauge The pressure indication on the pressure gauge is ambienttemperature compensated, i.e. the pressure indicated corresponds to a temperature of 20 C in the switchgear room. The pressure indication remains constant if the operating mode remains unchanged, even if the temperature in the switchgear room changes. Comply with sections 7.2 and 7.3 in the operating instructions of the pressure gauge. Magnetic snap contacts on the pressure gauge Signalling contact Switching functions 1 closes if pre-alarm is reached during pressure drop 2 closes if main alarm is reached during pressure drop 3 closes if main alarm is reached during pressure increase 43 Pressure monitoring ➀ Pressure gauge (pressure measuring device) for circuit-breaker gas compartment ➁ Filling and extraction valve with cap (circuit-breaker gas compartment) ➂ Pressure gauge for busbar section, right-hand ➃ Filling and extraction valve with cap (busbar section, right-hand) front shutter 44 Pressure monitoring ➀ Gas line, circuit-breaker gas compartment ➁ Gas line, busbar gas compartment 23

24 Sections of the earth conductor, plates and hardware included in switchgear accessories. Coat contact surfaces on earth connector (underside of busbar chamber), plate and section of earth conductor with contact lubricant KL (refer to sect. 21). Screw-down plate. Tighten screw couplings M8 with a torque of 20 ± 2 Nm. 4. Screw-down section of earth conductor. Tighten screw couplings M10 with a torque of 40 ± 4 Nm. 5. Connect earth conductor of switchgear to earth conductor of the switchgear building (this connecting line is not included in the scope of supplies). 17 Screwing down the earth conductor, connecting external control lines 45 Mounting the earthing bus to the busbar chamber busbar 1 External control lines Cable clips, screws, spring washers etc. are not included in the scope of supplies. Fold out swing frame Remove transport securing device (screw coupling M6) from the swing frame. Fold swing frame out. Introduce external control lines to the cable irons through the opening in the base plate. Fix external control lines to cable iron using cable clips. Connect wires to terminals according to diagram. 46/47 Connecting external control lines 24

25 18 High-voltage connection Screw-fastening the cable iron Cable irons, angular brackets and hardware are included in switchgear accessories. Insert cable irons and angular brackets in panel supporting structure, and screw them down. Connector bushings The panels feature outer cone-type or inner cone-type connection bushings as standard equipment. - Outer cone-type connection bushing according to DIN EN 50181, connector type C (I R : 630 A; screwed contact with internal thread M16) - Inner cone-type connection bushing according to DIN EN 50181, connector type 1 (I R : A; plug-in contact 14 0 / mm). Transport protection cap Cable clip Adjustable cable iron Earth conductor 48 Example of cable connector for inner conetype coupler, make Pfisterer, system CONNEX Cable connectors, tools,! accessories (cable clips, screws, spring washers etc.) are not included in the scope of supplies. Mount cable connectors according to the mounting instructions of the cable connector's manufacturer. While mounting the cable connectors, observe the specified tightening torques. When shrink-fitting cable! boxes, make sure that the cable connection area of the panel is not heated beyond the admissible service temperature. We cannot accept any liability for consequential damage (charred cables of the capacitive indicator) which might result from shrinkfitting components in the cable connection compartment using an open flame. Cable connectors for inner cone-type connection bushings Remove transport protective caps from the connector bushings (socket-contacts). Mount cable connector according to the instructions of the cable connector manufacturer. Insert cable connector in inner cone-type connection bushing (press down) and screw-fasten safely. Tighten screw couplings M8 with a torque of 15 ± 3 Nm. After the cable connector has been inserted and screwed down, no cantilever loads and torsional forces must act on the inner conetype connection bushing (risk of damage to the inner conetype connection bushing). If necessary, re-adjust cable iron, align cables and fasten them to the cable iron using cable clips. Connector shell with conductive contact surface with reference to switchgear's metal enclosure: If the metallic connector shell features a conductive surface in contact with the metal cladding of the switchgear (this applies for the Pfisterer brand, system CONNEX), the cable's Cu shield must not be connected to the connector shell (contacting). If for operational reasons it is not possible to provide an insulation between the cable's Cu shield and the connector shell, consult the manufacturer. Coat contact surfaces of earth connection (cable's Cu shield) withcontact lubricant KL (refer to sect. 21). Screw-down Cu shield of cable to cable iron. Close unused inner cone-type connection bushings with surgeproof dummy plugs. 25

26 Cable connectors for outer cone-type connection bushings Mount cable connector according to the instructions of the cable connector manufacturer. Torque for tightening the cable connection (flat termination) to the outer cone-type connection bushing (thread M16): 40 ± 5 Nm. If the cable connector's manufacturer specifies a different tightening torque, the latter must be used. Do not use tightening torques exceeding 50 Nm. Connector for belted cable (only up to 24 kv) for outer cone-type connection bushing Mount hose-type cable box and connecting adapter according to manufacturer's mounting instructions. Cable clip Adjustable cable iron Slip cable connector onto outer cone-type connection bushing, and screw it down. Tighten screw couplings M8 with a torque of 10 ± 2 Nm. After the cable connector has been slipped on and screwed down, no cantilever loads and torsional forces must act on the outer conetype connection bushing (risk of damage to the outer cone-type connection bushing). If necessary, re-adjust cable iron, align cables and fasten them to the cable iron using cable clips. 4. Coat contact surfaces of earth connection (cable connector shell and cable Cu shield) with contact lubricant KL (refer to sect. 21). 5. Screw-down earth connection of cable connector shell and Cu shield of cable to cable iron. 6. Close non-used outer cone-type connection bushings with surgeproof caps. 49 Example of cable connector for outer cone-type coupler, make KABELRHEYDT, type AGG 20/400 (plug-in contact) Connecting pin Connecting adapter Earth conductor Adjustable cable iron 50 Belted cable for outer cone-type coupler, make F&G, type SKV 10D 26

27 Fully insulated conductor bar connection To verify precise contacting of the fully insulated conductor bar, remove circuit-breaker module (refer to operating instructions, sect. 6.1). Fully insulated conductor bars, rings and hardware included in switchgear accessories. Remove cover (blanking cover). Mount fully insulated conductor bar according to mounting instructions of the manufacturer. 4. Check precise contacting between round conductor and fully insulated conductor bar. 5. Insert desiccant. 6. Screw-fasten circuit breaker module and fill it to rated filling pressure (refer to sect. 15). Handling the Cu shields on high-voltage cables with ring core current transformers Coat contact surfaces of earth connection (Cu shield) with contact lubricant KL (refer to sect. 21). Route earth connection (Cu shield) of the conductor in question (L1, L2 and L3) directly on the high-voltage cable to the cable current transformer on the insulated earth return bar, and screw-fasten it. Route return line of earth connection bus line (in terms of PE conductor SL, marked in yellow/green) from the opposite earth return bar of the cable current transformer to the cable iron over the shortest distance, and screw it down. Fasten Cu shield to the conductor using an insulating tape or a cable clip. Cable connector Cu shield Cable clip (insulating tape) Earth return bar Ring core CT Earth shield bus cable Cable iron 52 Fundamental drawing, handling the Cu shields on the high-voltage cables with ring core current transformers M 8 x ± 2 Nm 51 Example of fully insulated conductor bar connection, make Meßwandlerbau, system DURESCA 27

28 Current transformer in line with busbar (current measurement on the busbar) Trailing cables ready for installation included in switchgear accessories. Take account of obligatory assembly drawing. Remove transport protective caps from the connection bushings (socket-contacts). 4. Mount cable connector according to the instructions of the cable connector manufacturer. Insert cable-connector in inner cone-type connection bushing (press down) and screwfasten safely. Tighten screw couplings M8 with a torque of 15 ± 3 Nm. After the cable connector has been inserted and screwed down, no cantilever loads or torsional forces must act on the inner conetype connection bushing (risk of damage to the inner cone-type connection bushing). 5. If necessary, re-adjust cable iron, align cables and fasten them to the cable iron using cable clips. Screw-fastening the dummy plug Close unused outer or inner cone-type connection bushings with surge-proof dummy plugs (surgeproof dummy plugs are not included in the scope of supplies). Surgeproof dummy plugs are available from the manufacturer of the cable connection system. Remove transport protection cap (made of plastic). Screw-fasten the dummy plug. Dummy plug Transport protection cap 53 Example of dummy plug for inner conetype connection bushing 28

29 19 Screw-fasten the cover plates (rear side of panel) Screw-fasten cover plates to the rear of the panel supporting structure (cover plate and hardware are included in the switchgear accessories). 54 Screw-fastening the cover plate 29

30 20 Final operations before commissioning Check: - lrated supply voltage of the control and operating devices. - rated filling pressure indication on the IGIS Clean and check assembly work Clean the switchgear, removing contamination due to assembly work. Remove all the attached information tags, cards, brochures and instructions no longer needed. Have all parts removed during the work on site been re-mounted? Check control current circuits Switch on auxiliary voltage and check for proper working order. - Electrical drives of switching devices - Position indicators. Check wiring laid on site. Verify that operability has not been impaired by transport or assembly.! The high-voltage supply must not be switched on! Actuate switching devices (refer to operating instructions, sect. 4). Watch position indicators. 30

31 21 Appendix Cleaning agent, contact lubricant, contact lubricant KL, SF 6 multipurpose lubricant MS and screw locking compound "Loctite" have been listed in the table "Auxiliary material" on the following page. How to treat contact surfaces (sliding contact surfaces, e.g. contacts of earthing switches and disconnectors, and firmly screwed contact surfaces, e.g. earth connectors). Different lubricants must not be mixed on any account! Contact areas coated with contact lubricant KL should not be touched, if possible. Once lubricants have been applied, these areas cannot be painted! Contact areas must be subjected to preliminary treatment just before screw-fastening. Pretreat- ment Material of contact surfaces: (1) Cleaning - using a lint-free cloth, - in case of severe contamination: using a detergent. (2) Expose metallic surface. Coat both contact surfaces so that the space between the contact surfaces is filled after screwfastening. Copper, silver-plated or (1) copper alloy, silver-plated (4) Copper or (1) copper alloy (2) (4) Steel or steel, (1) galvanized (3) (4) Make sure no sanding dust gets into the SF 6 gas compartments - using emery cloth (grain size 100 or finer), or - using a steel brush which may only be used for copper. (3) Expose metallic surface, remove any existing passivation - using emery cloth (grain size 100 or finer), or - using a steel brush which may only be used for steel. (4) Coat with contact lubricant KL How to treat sealing surfaces and seals Sealing surfaces coated with SF 6 multi-purpose lubricant MS should not be touched, if possible. Any contamination may impair function. Sealing surfaces, seals (toroidal sealing rings) and grooves for toroidal sealing rings must be cleaned and degreased with particular care using a cleaning agent and a lint-free cloth. Check visually. Immediately afterwards, grease with SF 6 multi-purpose lubricant MS using a nylon brush or a piece of chamois exclusively used for these applications. Store in a place free of contamination. Locking of screws using "LOCTITE" Preparation of the threaded areas - Clean and degrease the threaded areas with a cleaning agent. Apply adhesive - Coat the entire circumference of 2 or 3 threads in the area to be glued with liquid screw locking compound. - Max. time for positioning: 60 s. Note: - In case of a thread reach over 2 x the screw diameter and of blind hole threads, only wet the nut's thread. 31

32 Auxiliary material Item no. Cleaning agent; 1 l can Contact lubricant KL ; 0.5 kg can SF6 Multi-purpose lubricant MS ; 0.75 kg can Screw locking agent "Loctite" Insulating gas sulphur hexafluoride (SF 6 ) acc. to DIN VDE 0373 or IEC Publication 376 Compressed-gas cylinder (rented bottle) of 40 kg Compressed-gas cylinder (rented bottle) of 10 kg Recommended suppliers for SF 6 : Linde AG Kali-Chemie Fluor GmbH Repair paint 100 g can RAL 7032 pebble grey RAL 7044 silk grey Repair paint 500 g can RAL 7032 pebble grey RAL 7044 silk grey These auxiliary materials are available from AREVA Regensburg GmbH The use of other auxiliary materials is not admissible. Devices, appliances, accessories Item no. Transport device Transport trolley Toroidal sealing ring, size 527 x 12 (flange coupling, panel screw coupling) Toroidal sealing ring, size 138 x size 10 x (busbar attachment, only in case of busbar compartment cladding) Toroidal sealing ring, size 564 x (Attachment of mounting cover to busbar chamber) Desiccant bag 500 g C g C g C Spare part kit C Recommended equipment for SF6 handling (not included in scope of supplies) SF 6 gas refilling unit with secondary pressure gauge 0 to 6 bar, connection DN6, DILO ref. no R409 (for a rated filling pressure of 0.30 and 0.50 bar) SF 6 gas refilling unit with secondary pressure gauge 0 to 6 bar, connection DN6, DILO ref. no R410 (for a rated filling pressure of 0.75 bar) SF 6 gas refilling and evacuating unit, with vacuum pump 10 m 3 /h, connection DN 6, DILO ref.no R403 (for a rated filling pressure of 0.30 and 0.50 bar) SF 6 gas refilling and evacuating unit, with vacuum pump 10 m 3 /h, connection DN 6, DILO ref.no R410 (for a rated filling pressure of 0.75 bar) Dew point measuring device make MWB, type DP3-D-IIISH Gas leakage detector, make Wessels Meßtechnik, type HI300 Air content measuring unit, DILO ref. no Transition resistance measuring unit make Gloor Oerlikon, ref. no

33 Notes: 33

34 Notes: 34

35 AREVA Sachsenwerk GmbH Rathenaustraße 2 D Regensburg Postfach D Regensburg Telefon +49 (0)9 41/ Telefax +49 (0)9 41/

36 Our policy is one of continuous development. Accordingly the design of our products may change at any time. Whilst every effort is made to produce up to date literature, this brochure should only be regarded as a guide and is intended for information purposes only. Its contents do not constitute an offer for sale or advice on the application of any product referred to in it. We cannot be held responsible for any reliance on any decisions taken on its contents without specific advice. AREVA Sachsenwerk GmbH Regensburg - - AREVA AREVA, the AREVA logo and any alternative version thereof are trademarks and service marks of AREVA The other names mentioned, registered or not, are the property of their respective companies RCS PARIS - Creation: SCHREML Media GmbH Regensburg - Printed in Germany AREVA T&D T&D Worldwide Contact Centre contact.centre@areva-td.com