EOS SCHNEIDER RINGMASTER 'C' RANGE SWITCHGEAR

Transcription

1 Document Number: EOS Network(s): Summary: ENGINEERING OPERATION STANDARD EOS SCHNEIDER RINGMASTER 'C' RANGE SWITCHGEAR EPN, LPN, SPN This standard details the installation, commissioning and operation of Schneider Ringmaster 'C' Range switchgear. Author: John Mason Approver: Paul Williams Date: 06/04/2018 This document forms part of the Company s Integrated Business System and its requirements are mandatory throughout UK Power Networks. Departure from these requirements may only be taken with the written approval of the Director of Asset Management. If you have any queries about this document please contact the author or owner of the current issue. Applicable To UK Power Networks External Asset Management G81 Website Capital Programme UK Power Networks Services Connections Contractors Health & Safety ICPs/IDNOs Legal Meter Operators Network Operations Procurement Strategy & Regulation Technical Training THIS IS AN UNCONTROLLED DOCUMENT, THE READER MUST CONFIRM ITS VALIDITY BEFORE USE

2 Revision Record Version 9.0 Review Date 08/10/2022 Date 22/03/2018 Author John Mason Reason for update: Updated, to illustrate customer trip connections What has changed: Section Customer Trip Connections added to illustrate the connections Table A-2 Schneider Switchgear Kits (entry 8 & 9) material codes changed Version 8.0 Review Date 08/10/2022 Date 07/02/2018 Author John Mason Reason for update: Updated to include Schneider Air Metering Unit installation information. What has changed: Section added to highlight the removal of legs that can foul rear facing bottom entry cable glands. Version 7.0 Review Date 08/10/2022 Date 30/08/2017 Author John Mason Reason for update: Updated to include the new specification of Schneider Electric s Ringmaster C Range Switchgear. What has changed: Major changes made to the document to incorporate the new specification RMU (2016). Document reclassified from ECS to EOS Note: Relay, VPIS and External FPI information for both variants of switchgear is detailed in sections 4.5, 4.6 and Appendix C. Version 6.0 Review Date 08/10/2022 Date 20/04/2017 Author Ian Marshall Reason for update: Periodic review What has changed: No content changes, library paths updated Version 5.0 Review Date Date 03/10/2013 Author Aleksei Kazakov Reviewed document, Section 3 referenced documents updated Version 4.0 Review Date Date 30/11/2010 Author Morgan Ryan Reviewed document and updated references Version 3.0 Review Date Date 10/01/2007 Author Craig Jeffrey Updated with reference to Nortroll Cabletroll 2350 FPI Version 2.0 Review Date Date 22/09/2003 Author Lionel Mackay Updated to new EDF Energy structure and contract 08/09/2003 UK Power Networks 2018 All rights reserved 2 of 26

3 Contents 1 Introduction Scope Glossary and Abbreviations Description Overview Remote Control Fault Passage Indicators Time Limit Fuse-Links (TLFs) Relays VPIS Internal Arc Protection Cable Boxes Installation Site Preparation Lifting and Slinging RMU Bushing Heights Cable Terminations Commissioning Further Information Installation, Operation and Maintenance Manual General Arrangement Drawings Schematic Diagrams References Dependant Documents Appendix A Schneider Switchgear Range Appendix B General Arrangement Drawings Appendix C Installation of External Nortroll Cabletroll 2350 FPI UK Power Networks 2018 All rights reserved 3 of 26

4 Tables Table A-1 Schneider Switchgear Variants Table A-2 Schneider Switchgear Kits Table C-1 Nortroll Cabletroll 2350 Installation Materials Table C-2 RN2c/6c External FPI Connections Table C-3 SE6 External FPI Connections Figures Figure 4-1 Ringmaster C Range switchgear... 6 Figure 4-2 New Spec RMU... 7 Figure 4-3 Old Spec RMU... 7 Figure 4-4 New Spec Facia... 7 Figure 4-5 Old Spec Facia... 7 Figure 4-6 New Spec Marshalling Box... 7 Figure 4-7 MiCOM P116 Relay... 8 Figure 4-8 VIP 300 Relay... 8 Figure 4-9 New Spec VPIS... 9 Figure 4-10 Old Spec VPIS... 9 Figure 5-1 Fouling Legs Figure 5-2 Sling Points Figure 5-3 Customer Trip Connections Figure 5-4 Marshalling Brace Figure 5-5 Marshalling Brace Removed Figure 5-6 Arrangement of Earthing for Polymeric Cables Using Earth Stud Insulated from Steelwork and Plain Tube Type Gland Figure 5-7 Vandal Cover Figure 5-8 Vandal Cover Removed UK Power Networks 2018 All rights reserved 4 of 26

5 1 Introduction This standard details the installation, commissioning and operation of Schneider Ringmaster C Range switchgear. 2 Scope This document applies to Schneider Ringmaster C Range switchgear used within UK Power Networks. 3 Glossary and Abbreviations Term AMU CME CT FPI RMU RSW SW RTU TFL TLF UK Power Networks Description Air Metering Unit Circuit Main Earth Current Transformer Fault Passage Indicator Ring Main Unit Ring Switch Switch Remote Terminal Unit Time Fuse Link Time Limit Fuse UK Power Networks (Operations) Ltd consists of three electricity distribution networks: Eastern Power Networks plc (EPN). London Power Network plc (LPN). South Eastern Power Networks plc (SPN). UK Power Networks 2018 All rights reserved 5 of 26

6 4 Description 4.1 Overview The Schneider Ringmaster C Range of switchgear consists of non-extensible and extensible ring main units, extensible switches and extensible circuit breakers. The range utilises TLF or relay protection and remote control. The available units are shown in Figure 4-1. Figure 4-2 to Figure 4-6 show the differences between the new and old specification of the Schneider Ringmaster C Range switchgear. Note: Old specification switchgear is pre A full list of switchgear and associated kits is given in Appendix A. Refer to EAS for full technical details. The general arrangement drawings are included in Appendix B. Schematic diagrams are available from: Intranet > Policies, Procedures & Forms > Engineering > Reference Library > Manufacturers > Schneider Figure 4-1 Ringmaster C Range switchgear UK Power Networks 2018 All rights reserved 6 of 26

7 Figure 4-2 New Spec RMU Figure 4-3 Old Spec RMU Figure 4-4 New Spec Facia Figure 4-5 Old Spec Facia Figure 4-6 New Spec Marshalling Box 4.2 Remote Control Ring switches 1 and 2 are fitted with actuators as standard. Circuit breaker actuator instructions are available from: Intranet > Policies, Procedures & Forms > Engineering > Reference Library > Manufacturers > Schneider > New Specification RMU 2016 > Kits and Instructions The Schneider switchgear can be used with the approved RTUs, refer to EAS Further information is available in ECS , ECS , EOS and EOS UK Power Networks 2018 All rights reserved 7 of 26

8 4.3 Fault Passage Indicators At most installations the fault passage indicator functionality is provided by the RTU using the CTs installed in the ring switch cable boxes or the relay installed on the circuit-breaker, however if an additional external FPI is required it shall be installed as detailed in Appendix C. Refer to EDS-6003 for further information on fault passage indicators. 4.4 Time Limit Fuse-Links (TLFs) All units not fitted with a protection relay are fitted with tag-type TLFs. Refer to EDS for further information. 4.5 Relays The MiCOM P116 is the approved relay for the new spec equipment (2016 onwards) while the VIP 300 remains approved and is used on the old spec switchgear. Figure 4-7 MiCOM P116 Relay Figure 4-8 VIP 300 Relay Further details on the relays can be found on the manufacturers website or from: Intranet > Policies, Procedures & Forms > Engineering > Reference Library > Manufacturers > Schneider/AREVA > Relays/Protection Also refer to ECP and ECP UK Power Networks 2018 All rights reserved 8 of 26

9 4.6 VPIS The Schneider Ringmaster C Range switchgear utilises the VPIS shown in Figures 4-9 and Figure 4-9 New Spec VPIS Figure 4-10 Old Spec VPIS 4.7 Internal Arc Protection Cable Boxes Cable boxes incorporate pressure relief vents in order to provide operator protection in the event of a fault in the cable box. The standard boxes are tested up to 12.5kA. UK Power Networks 2018 All rights reserved 9 of 26

10 5 Installation 5.1 Site Preparation Foundations Foundation details are given in EDS Angled Cable Boxes Angled cable boxes are available for rear facing cables although due to the internal arc vent at the rear these boxes are not reversible. This applies to bottom entry installations: installers shall ensure that the plinth or cable entry arrangements are suitable for either straight or rear facing angled cable boxes Schneider Air Metering Unit When coupling a Schneider AMU to a RMU with rear facing bottom entry cable glands the AMU legs foul the cable entry (see Figure 5-1). Once the AMU is mounted to the RMU the rear legs, closest to the RMU, can be removed but shall be kept with the installation to enable re-use in the event that the AMU is removed (i.e. strapped to the remaining support legs). Figure 5-1 Fouling Legs UK Power Networks 2018 All rights reserved 10 of 26

11 5.2 Lifting and Slinging Lifting eyes are provided on either side of the unit. The unit shall be lifted using all four eyes. Refer to Figure 5-2. Figure 5-2 Sling Points For lifting coupled extensible equipment provided by Schneider (a base frame and bracing will be pre-installed) the outermost four lifting eyes should be used. (Please refer to Schneider installation instructions within Alfresco as mentioned in section 3). Coupled extensible equipment without a Schneider base frame and bracing present shall not be lifted as this will put mechanical stress on the band joint. UK Power Networks 2018 All rights reserved 11 of 26

12 5.3 RMU Bushing Heights RMUs are supplied with two standard rear tee-off bushing heights. These are the transformer mounted with a rear bushing height of 1100mm and freestanding with a rear bushing height of 1320mm. 5.4 Cable Terminations Cable Boxes and Glands Straight or angled gland cable boxes are supplied for either top or bottom entry. The pressure-relief vents for the internal arc protection shall be positioned at the rear of the cable boxes and because of this; left hand and right hand cable boxes are now different. Cable boxes may be fitted for either top or bottom entry. However to keep the vents at the rear, left and right hand boxes shall be swapped over if a bottom entry unit is converted to top entry (or vice versa). Plain tube type glands are fitted to all cable boxes. As the cable boxes are required to withstand the effects of internal faults, they are secured with a large number of fastenings. These fastenings shall be secured again when securing the cable box Customer Trip Connections Customer trip connections are shown in figure 5-3 below. Figure 5-3 Customer Trip Connections Ensure that the correct input voltage (20-48 DC/ V AC/DC) is set using the link and connections 18, 19 & 20 shown in Figure HV Cable End Box Cover The left cable end box is situated behind the marshalling cabinet and in order to access all of the cover screws the cabinet must be moved. The cabinet is on hinges and fixed by the brace shown in Figure 5-4, once the brace is removed the cabinet will swivel enough to allow the cable box to be removed (see Figure 5-5). UK Power Networks 2018 All rights reserved 12 of 26

13 Figure 5-4 Marshalling Brace Figure 5-5 Marshalling Brace Removed The marshalling cabinet and brace shall be secured once the cable box has been accessed Earth Connections (Old Specification RMUs) Earth braids should be insulated from the steelwork within the cable box and terminated on the insulated earth stud. No other external connection should be made to the earth stud on the cable box. Note that there is no earth connection to the gland. If a core balance transformer (CT) is fitted, the earth braids shall return through the core balance CT (where fitted) before terminating on the insulated earth stud. In this way any cable sheath currents will cancel out, such that the CT measures only the imbalance in phase currents. The diagram shown in Figure 5-6 demonstrates the arrangement of earth braids to be used for triplex or single core polymeric cables. UK Power Networks 2018 All rights reserved 13 of 26

14 Figure 5-6 Arrangement of Earthing for Polymeric Cables Using Earth Stud Insulated from Steelwork and Plain Tube Type Gland Note: There are circumstances associated with hot sites where the cable sheaths should not be bonded to steelwork earth. Note that segregated earthing is a special case and the advice of the UK Power Networks designer or earthing specialist should be sought. Where a core balance CT is used the earth stud will need to be adjusted to minimise the height of the shear bolt connector. The external portion of the insulated earth stud will be connected to steelwork earth. If this is disconnected during installation it shall be reconnected before the equipment is put into service Bushings Ring switch bushings are round, with an M16 hole in the end of the bushing stem (type C1 as defined in EN 50181). They are provided with 16mm bolts and washers which fit the lugs in the termination kit for triplex cables. Tee-off bushings have an M12 hole, fitted with 12mm bolts and washers. The reducing washers supplied with the termination kits shall be used to adapt the lugs to the bolts. UK Power Networks 2018 All rights reserved 14 of 26

15 5.4.6 Vandal Cover All units are supplied with the Vandal Cover shown below: Figure 5-7 Vandal Cover Figure 5-8 Vandal Cover Removed Removal To remove the Vandal Cover remove the six screws shown in Figure Commissioning Commissioning instructions are listed below: ECP Secondary Substation Commissioning Procedure ECP Ground-mounted Switchgear Commissioning Procedure ECP Ground-mounted Switchgear with Relays Commissioning Procedure UK Power Networks 2018 All rights reserved 15 of 26

16 7 Further Information 7.1 Installation, Operation and Maintenance Manual The manufacturer s Installation, Operation and Maintenance manual is available from: Intranet > Policies, Procedures & Forms > Engineering > Reference Library > Manufacturers > Schneider > New Specification RMU General Arrangement Drawings General Arrangement (GA) drawings are included in Appendix A 7.3 Schematic Diagrams Schematic diagrams are available from: Intranet > Policies, Procedures & Forms > Engineering > Reference Library > Manufacturers > Schneider > Switchgear Intranet > Policies, Procedures & Forms > Engineering > Reference Library > Manufacturers > Schneider > New Specification RMU References EAS EDS EDS EOS EAS EOS EOS ECS ECS ECS ECP ECP ECP ECP kV Ring Main Switchgear Secondary Substation Civil Designs Fuse Ratings at Distributed Substations Fault Passage Indicators Approved Equipment List - RTU and Control Equipment Lucy Gemini 3.0 Control Unit and RTU Remsdaq Callisto NX Control Unit and RTU Type E RTU and Ancillary Items Installation Procedure Lucy Gemini 3 Configuration Procedure Remsdaq Callisto NX Configuration Procedure Secondary Substation Commissioning Procedure Ground-mounted Switchgear Commissioning Procedure Ground-mounted Switchgear with Relays Commissioning Procedure Nortroll Cabletroll 2350 FPI Installation and Commissioning Procedure 9 Dependant Documents The documents below are dependant on the content of this document and may be affected by the changes. EAS kV Ring Main Switchgear UK Power Networks 2018 All rights reserved 16 of 26

17 Appendix A Schneider Switchgear Range Table A-1 Schneider Switchgear Variants Type Model CB Rating CB Protection Mounting Cable Entry Actuator Fitted FPI CTs Fitted Material Code Supplier Code RMU RN2C 200A TFL Transformer Bottom RSW1 + 2 RSW X R00UKPN01 RN2C 200A TFL Transformer Top RSW1 + 2 RSW H R00UKPN02 RN6C 630A RN6C 630A MiCOM P116 MiCOM P116 Transformer Bottom RSW1 + 2 RSW S R00UKPN03 Transformer Top RSW1 + 2 RSW C R00UKPN04 RN2C 200A TFL Freestanding Bottom RSW1 + 2 RSW M R00UKPN05 RN2C 200A TFL Freestanding Top RSW1 + 2 RSW W R00UKPN06 RN6C 630A RN6C 630A MiCOM P116 MiCOM P116 Freestanding Bottom RSW1 + 2 RSW G R00UKPN07 Freestanding Top RSW1 + 2 RSW R R00UKPN08 CB CN2 200A TFL Transformer Bottom B D00UKPN10 CN2 200A TFL Freestanding Bottom L D00UKPN11 CE2 200A TFL Freestanding Bottom R D00UKPN13 CE6 630A MiCOM P116 Freestanding Bottom G D00UKPN12 SW SE6 630A n/a Freestanding Bottom - SW 15012B D00UKPN14 Ext RE2C + SE6 200A TFL Freestanding Bottom RSW1 RSW L D00UKPN15 Table A-2 Schneider Switchgear Kits Kit Description Material Code Supplier Code 1 Circuit Breaker or Switch Actuator (Rotary for RMU) 48777A RMR-A507 2 Circuit Breaker or Switch Actuator (Linear for Extensible) 48776Q RMR-A67 3 Ring Switch Actuator 14500G RMR-A302/3 4 R/S Bushing Sleeve 15028T RMR-A452 5 T-Off Cable Box 48520X RMR-F47 6 Angled Cable Gland (RMU) 48832Y RMR-A317 7 Angled Cable Gland (Extensible) 48833J RMR-A50 8 Coupling Kit for Extensible Switchgear 01255M RMR-A14 9 End Cap Kit for Extensible Switchgear 01256W RMR-A15 UK Power Networks 2018 All rights reserved 17 of 26

18 Appendix B General Arrangement Drawings B.1 RN2c Non-extensible RMU with TFL protection UK Power Networks 2018 All rights reserved 18 of 26

19 B.2 RN6c Non-extensible RMU with MiCOM P116 relay protection UK Power Networks 2018 All rights reserved 19 of 26

20 B.3 CN2 Non-extensible CB with TFL protection UK Power Networks 2018 All rights reserved 20 of 26

21 B.4 CE2 Extensible CB with TFL protection UK Power Networks 2018 All rights reserved 21 of 26

22 B.5 SE6 Extensible Switch UK Power Networks 2018 All rights reserved 22 of 26

23 B.6 CE6 Extensible CB with MiCOM P116 relay protection UK Power Networks 2018 All rights reserved 23 of 26

24 Appendix C Installation of External Nortroll Cabletroll 2350 FPI C.1 Overview This installation instruction takes into account the requirement for an extra external FPI on the new specification Schneider RMU, especially where it may be required in situations where two RMUs are installed within a substation and only one RTU has been installed which does not have the capacity to accommodate the extra FPI function. C.2 Materials Required Table C-1 Nortroll Cabletroll 2350 Installation Materials Description Material Code 7 core 2.5mm 2 SWA Cable 05972V CW20 Outdoor Gland 03598H Nortroll Cabletroll 2350 FPI 14731H UK Power Networks 2018 All rights reserved 24 of 26

25 C.3 Installation This instruction should be read in conjunction with ECP (the FPI installation and commissioning procedure) and especially section 10, which details the installation with ring switch phase CTs already installed within the RMU, as is the case with the new specification Schneider RMUs. 1. Discard any cable supplied with the FPI (14731H) 2. Connect two lengths of SWA cable (05972V) via the glands provided to the FPI using the relevant connections from table C Mount the FPI on the RMU supporting leg, left leg for ring switch 1 or right leg for ring switch Enter the SWA cables into the RMU marshalling box using outdoor glands (03598H). 5. Connect the cables in the marshalling box using the relevant connections from table C-2 and C-3. Table C-2 RN2c/6c External FPI Connections FPI SW1 Reset & Indication 2350 FPI Cable Terminations 7 Core Cable No.1 FPI Reset F 56 J8(1) FPI Reset Core 1 FPI Reset Common G 54 J8(2) FPI Reset Core 2 General Alarm / Indication Common H 62 J6(2) FPI Indication Core 3 FPI Operated Indication N 58 J6(3) FPI Indication Core 4 FPI SW2 Reset & Indication 7 Core Cable No.1 FPI Reset F 59 J8(1) FPI Reset Core 1 FPI Reset Common G 55 J8(2) FPI Reset Core 2 FPI Indication Common H 64 J6(2) FPI Indication Core 3 FPI Indication O/P N 61 J6(3) FPI Indication Core 4 RSW1 RTU/CT Shorting Block 7 Core Cable No.2 CT Input L1 (Red) Phase D111-L 130 J3(S1) 500/1 CT Core 1 CT Input L2 (Yellow) Phase D131-L 131 J4(S1) 500/1 CT Core 2 CT Input L3 (Blue) Phase D151-L 132 J5(S1) 500/1 CT Core 3 CT Input Common Neutral D171-L 133 J5(S2) 500/1 CT Core 4 RSW2 RTU/CT Shorting Block 7 Core Cable No.2 CT Input L1 (Red) Phase D111-R 139 J3(S1) 500/1 CT Core 1 CT Input L2 (Yellow) Phase D131-R 140 J4(S1) 500/1 CT Core 2 CT Input L3 (Blue) Phase D151-R 141 J5(S1) 500/1 CT Core 3 CT Input Common Neutral D171-R 142 J5(S2) 500/1 CT Core 4 UK Power Networks 2018 All rights reserved 25 of 26

26 Table C-3 SE6 External FPI Connections FPI SW Reset & Indication 2350 FPI Cable Terminations 7 Core Cable No.1 FPI Reset F 26 J8(1) FPI Reset Core 1 FPI Reset Common G 29 J8(2) FPI Reset Core 2 General Alarm / Indication Common H 46 J6(2) FPI Indication Core 3 FPI Operated Indication N 28 J6(3) FPI Indication Core 4 SW RTU/CT Shorting Block 7 Core Cable No.2 CT Input L1 (Red) Phase D12 5 J3(S1) 500/1 CT Core 1 CT Input L2 (Yellow) Phase D32 6 J4(S1) 500/1 CT Core 2 CT Input L3 (Blue) Phase D52 7 J5(S1) 500/1 CT Core 3 CT Input Common Neutral D71 8 J5(S2) 500/1 CT Core 4 UK Power Networks 2018 All rights reserved 26 of 26