DESIGN STANDARDS ELECTRICAL SCHEMATIC DIAGRAMS
CERNLHC Project Document No.LHC-PM-QA-403.00 rev 1.0CH-1211 Geneva 23SwitzerlandCERN Div./Group or Supplier/Contractor Document No.-theEDMS Document No.LargeHadronCollider103568projectDate: 2000-07-05Quality Assurance StandardDESIGN STANDARDSELECTRICAL SCHEMATIC DIAGRAMSAbstractThis document provides standards for all electrical schematic diagrams for the LHC andits detectors. It covers:! High and low voltage distribution diagrams.! Relay and automatism diagrams.! Lighting, power and earth protection diagrams.! LHC main ring magnets cabling diagrams.! Cooling and ventilation relay and automatism diagrams.Prepared by :Checked by :Approved by :Martial DujardinST/ELMartial.Dujardin@cern.chJoaquin Inigo-GolfinST/CVJoaquin.Inigo-Golfin@cern.chLHC Quality AssuranceWorking GroupPaul FaugerasDeputy to LHC ProjectLeader for QualityAssurance
LHC Project Document No.LHC-PM-QA-403.00 rev 1.0Page 2 of 14History of ChangesRev. No.DatePagesDescription of Changes0.1 draft2000-05-151st draft submitted to QAWG for comments0.2 draft2000-05-242nd draft submitted to QAWG for comments1.02000-07-0510References corrected. Released following QAWG meeting.
LHC Project Document No.LHC-PM-QA-403.00 rev 1.0Page 3 of 14Table of Contents1.PURPOSE . 42.POLICY . 43.SCOPE. 44.RESPONSIBILITIES . 45.5.15.25.3DRAWING PREPARATION - GENERAL . 5DRAWING SIZES . 5TITLE BLOCK . 5MODIFICATION LIST . 66.6.16.2NUMBERING SCHEMES . 6DIAGRAMS PRODUCED BY ST/EL. 7DIAGRAMS PRODUCED BY ST/CV . 77.7.17.2ARCHIVING PROCESS . 7ST/EL ELECTRICAL DIAGRAMS. 7ST/CV ELECTRICAL DIAGRAMS . 88.8.1HIGH AND LOW VOLTAGE DISTRIBUTION UNIFILAR DIAGRAMS . 8FILE NAMING CONVENTION. 89.9.1RELAY AND AUTOMATISM DIAGRAMS . 8FILE NAMING CONVENTION. 810. LIGHTING, POWER AND EARTH PROTECTION DIAGRAMS . 910.1 FILE NAMING CONVENTION. 911. LHC MAIN RING MAGNETS CABLING DIAGRAMS. 912. COOLING AND VENTILATION RELAY AND AUTOMATISM DIAGRAMS . 1012.1 FILE NAMING CONVENTION.1013. RELATED DOCUMENTATION . 1014. ANNEXES . 10
LHC Project Document No.LHC-PM-QA-403.00 rev 1.0Page 4 of 141. PURPOSETo provide standards for all electrical schematic diagrams for the Large HadronCollider (LHC) and its detectors.2. POLICYAll electrical schematic diagrams for the LHC project shall be created with a ComputerAided Design (CAD) system, in accordance with the general quality assurance policy ofthe LHC project.The CAD systems used for electrical schematic diagrams prepared at CERN areAutoCAD1, the AutoCAD add-on application Alpage-Elec2, and SEE 30002.All electrical schematic diagrams prepared at CERN, and referenced in a CERNcontractual document, shall incorporate the appropriate CERN title block. The drawingtittle shall be written in English only or English and French.All electrical schematics diagrams shall be stored in the CERN Drawing Directory(CDD) with the relevant descriptive information and identified by a unique drawingnumber defined in accordance with the CERN Drawing Directory rules as described inthe “CDD Manual”[ 1 ]. Diagrams may be stored as Hewlett Packard Graphic Language(HPGL) plot files and native CAD files or as HPGL plot files only.All electrical schematic diagrams shall be submitted to a review and approval processbefore being released as described in "Drawing Management and Control", [ 2 ].New versions of released diagrams shall be submitted to the same review andapproval process as the original diagrams.3. SCOPEThis standard is applicable to:All electrical schematic diagrams for the LHC and its detectors. This includes:! High and low voltage distribution schematic diagrams.! Relay, wiring and automatism schematic diagrams.! Lighting, power and earth protection schematic diagrams.! LHC main ring magnets cabling schematic diagrams.! Cooling and ventilation relay and automatism diagrams.4. RESPONSIBILITIESManagers, Supervisors and Project Engineers (PE) at CERN working on the LHC Projectare responsible for:! Ensuring that designers and draughtsman are aware of and understand theprocedures described in the present document.! Ensuring that these design standards are fully implemented in their design.–12AutoCAD is a registered trademark of Autodesk, Inc.Alpage-Elec and SEE 3000 are registered trademarks of Ige-Xao
LHC Project Document No.LHC-PM-QA-403.00 rev 1.0Page 5 of 14! Ensuring that industrial support personnel assigned to CAD design and draftingactivity is suitably trained and has been informed of CERN practices before startingwork.Every designer and draughtsman is responsible for producing diagrams in compliancewith these design standards.The ST Division is responsible for the definition of equipment codes used for electricalschematic diagrams. Equipment codes for LHC equipment have to be approved by theLHC Co-ordinator for equipment codes [ 3 ].The diagrams in the categories below are produced under the responsibility of the STDivision Electrical Engineering and Telecom group (ST/EL).! High and low voltage distribution schematic diagrams.! Relay, wiring and automatism schematic diagrams.! Lighting, power and earth protection schematic diagrams.! LHC main ring magnets cabling schematic diagrams.Cooling and ventilation relay and automatism diagrams are produced under theresponsibility of the ST Division Cooling and Ventilation group (ST/CV).5. DRAWING PREPARATION - GENERAL5.1 DRAWING SIZESUnless otherwise specified all diagrams shall be made on one of the followingInternational Organization for Standardization (ISO) standard sizes:HorizontalA0 (1189 x 841 mm)A1 (841 x 594 mm)A2 (594 x 420 mm)A3 (420 x 297 mm)VerticalA4 (297 x 210 mm)5.2 TITLE BLOCKTitle blocks differ slightly depending on the CAD application used for preparing thediagram, but they are in all cases compatible with CDD.TITLEThe diagram‘s title in English or in English and FrenchDRAWING NUMBERAs described in chapter 6.QA CATEGORYThe code of the quality assurance category (1 char), see [ 4 ]DRAWING SIZEThe 2nd digit of the size (3 for size A3)REVISION INDEXThe 2nd letter of the revision indexAUTHORThe author’s initial and surnameDATEThe date of creation of the drawing in ISO format (yyyy-mm-dd)SCALEUsed only for lighting, power and earth protection diagrams
LHC Project Document No.LHC-PM-QA-403.00 rev 1.0Page 6 of 14Figure 1 - Title block of a lighting diagramFigure 2 - Title block of a single line diagram5.3 MODIFICATION LISTA new line has to be added to the modification list of diagrams for each revision, withthe following data:INDEXThe 2nd letter of the revision index.DATEDate of the modificationNAMEInitial and surname of the author of the modificationZONEThe location of the modification (1 char 1 digit)MODIFICATIONThe Engineering Change Request (ECR) number of the modificationor a text describing the modification(s)Figure 3 - Diagram modification list6. NUMBERING SCHEMESThe numbering scheme for electrical schematic diagrams is derived from the schemein use for LHC drawings. However deviations are introduced to take into account thespecific needs related to electrical diagrams.
LHC Project Document No.LHC-PM-QA-403.00 rev 1.0Page 7 of 146.1 DIAGRAMS PRODUCED BY ST/ELA deviation is introduced in the use of the sequential number which is 3 digits longinstead of 4. The digit freed in this way is used for a geographical location code. Thestructure of the drawing number is:Project code:A project identification code. For the LHC project the code is LHCEquipment code:An LHC equipment code (5 chars/digits). See annex A1.ZoneA geographical location code (1 digit)Number:A sequential number (3 digits).Example:EQUIPMENT CODEPROJECT CODEZONENUMBERL H C E B L 5 0 1 4Note: Equipment codes shorter than 5 chars/digits shall be completed withunderscores ( ).6.2 DIAGRAMS PRODUCED BY ST/CVThe position normally used for the equipment code is replaced by a 1 charactersystem code followed by a 4 digit building number. The structure of the drawingnumber is:Project code:A project identification code. For the LHC project the code is LHCSys:An LHC system identification code. E for electrical system.BuildingA building number (4 digits).Number:A sequential number (4 digits).Example:PROJECT CODESYSBUILDINGNUMBERL H C E 2 6 8 4 0 0 0 17. ARCHIVING PROCESSElectrical diagrams are archived in CDD as HPGL plot files. The process is describedbelow. Native CAD files of ST/CV diagrams are also stored in CDD.7.1 ST/EL ELECTRICAL DIAGRAMSA plot file in HPGL2 format is prepared and placed in a sub-directory of the directorySRV4 DIV\drawings\DRAWINGS\ELEC\HPGL\.This sub-directory, and the plot file it contains, are named in accordance with thefollowing convention:Sub-directory nameDOPRJFile nameEQUIP3N.pltwhere:
LHC Project Document No.LHC-PM-QA-403.00 rev 1.0Page 8 of 14DOPRJ:A design office code (2 digits) concatenated with a project code (3chars)EQUIP:The equipment code (5 chars/digits)ZONE:The geographical location code (1 digit)3NThe second to fourth digits of the diagram sequential number-3digitsExample:The plot file of the drawing LHCEBL 5004 is named EBL5004.plt and stored in thesub-directory SRV4 DIV\drawings\DRAWINGS\ELEC\HPGL\77LHC\.Only the last version of the plot file is stored in this directory.7.2 ST/CV ELECTRICAL DIAGRAMSA plot file in HPGL2 format is prepared; it is named and stored following theconvention described in section 12.1 with the exception of the file extension which isPLT instead of DWG.8. HIGH AND LOW VOLTAGE DISTRIBUTION UNIFILARDIAGRAMSHigh and low voltage distribution single line diagrams are prepared with the CADsystem Alpage Elec which will be replaced by SEE 3000 in the future. They are drawnas a single folio in the sizes A0 to A4.They shall be prepared in accordance to the to International ElectrotechnicalCommission (IEC) 60364-1 (1992-10) standards, [ 5 ] and (IEC) 60617 standards,[ 8 ], as well as to CERN Safety Instructions IS23 [ 6 ] and IS24 [ 7 ].8.1 FILE NAMING CONVENTIONThe native CAD files are stored on the NICE server SRV3 DIV, in the directoryST EL\BE\AE4 V4. A sub-directory is created for each diagram containing all the filesrelated to that diagram. This sub-directory is named in accordance with Alpage-Elecconstraints: 5 alphanumeric characters (1 letter followed by 4 digits)Example: ST EL\BE\AE4 V4\M00029. RELAY AND AUTOMATISM DIAGRAMSRelay and automatism schematic diagrams are prepared with the CAD systems AlpageElec and SEE 3000. Diagrams supplied by contractors may be prepared with AutoCAD.They are drawn as multi-folios in A3 size.They shall be prepared in accordance to the to International ElectrotechnicalCommission (IEC) 60364-1 (1992-10) [ 5 ] and (IEC) 60617-1 (1985-01) [ 8 ]standards, as well as to CERN Safety Instructions IS23 [ 6 ] and IS24 [ 7 ].9.1 FILE NAMING CONVENTIONAlpage Elec:As described in chapter 6.1SEE 3000:The native CAD files are stored on the NICE server SRV3 DIV, inthe directory ST EL\BE\SEE3000. A sub-directory is created foreach drawing containing all the files related to that drawing.
LHC Project Document No.LHC-PM-QA-403.00 rev 1.0Page 9 of 14Example: ST EL\BE\SEE3000\71LHC\EM300110. LIGHTING, POWER AND EARTH PROTECTION DIAGRAMSLighting, power and earth protection schematic diagrams are combinations of anelectrical schematic diagram and an equipment installation layout.They are prepared with AutoCAD. The parts list of equipment is prepared with the helpof a CERN developed AutoCAD application named ATT TAB. This application isdescribed in the document “Etude et développement d’applications dansl’environnement DAO AutoCAD pour l’aide à la gestion d’études électriques" written byA. Croissant in 1992.They shall be prepared in accordance to the International Electrotechnical Commission(IEC) 60617 standards, [ 8 ], as well as to CERN Safety Instructions IS23, [ 6 ] andIS24, [ 7 ].The following rules shall be respected when preparing a drawing:! The schematic part is drawn on the layer "SCHEMA".! The installation layout part is drawn on the layer "IMP".! They are drawn using the symbols library available on the NICE serverI:\SRV4 DIV\drawings\DRAWINGS\ELEC\BE LHC\STANDARD\WB10.1 FILE NAMING CONVENTIONThe native CAD files are stored on the NICE server SRV4 DIV\drawings\, in thedirectory DRAWINGS\ELEC\. A sub-directory is created for each set of diagrams. Thissub-directory, and the drawing files it contains, are named in accordance with thefollowing conventions:Sub-directory name:DOPRJFile name:EQUIPNUM.DWGwhere:DOPRJ:Design office code (2 digits) concatenated with a project code(3chars)EQUIP:Equipment code (5 chars/digits)NUM:Geographical location code (1 digit) sequential number (4 digits)DWGStandard AutoCAD file extensionExample:The file of the diagram LHCEBL 5004 is named EBL5004.DWG and is stored in thedirectory I:\SRV4 DIV\drawings\DRAWINGS\ELEC\77LHC\11. LHC MAIN RING MAGNETS CABLING DIAGRAMSThese schematic diagrams are made with AutoCAD. They follow the standardsdescribed in LHC-PM-QA-402.00 "Design Standards-Mechanical Engineering andInstallations" except for the pen sizes and colours.They can only been printed on a colour plotter.
LHC Project Document No.LHC-PM-QA-403.00 rev 1.0Page 10 of 1412. COOLING AND VENTILATION RELAY AND AUTOMATISMDIAGRAMSRelay and automatism diagrams are prepared with the CAD systems ALPAGE ELEC andSEE 3000 both in A3 and A4 sizes.Diagrams supplied by contractors may be prepared with AutoCAD. They are drawn asmulti-folios in A3 size.Diagrams shall be prepared in accordance to the International ElectrotechnicalCommission (IEC) 60617 standards, [ 8 ].12.1 FILE NAMING CONVENTIONThe native CAD files are stored on the NICE server SRV4 DIV\drawings\ in thedirectory DRAWINGS\LHC. A sub-directory is created for each building, containing allthe files related to that building. This sub-directory is named according to the followingconvention:Sub-directory nameEBLDG1NFile nameEBLDG3N.DWGwhere:EBLDG:The character E followed by the building number(4 digits), total 5digits1NThe first digit of the diagram sequential number-1 digit3NThe second to fourth digits of the diagram sequential number-3digitsDWGThe Standard AutoCAD and Alpage Elec file extensionExample:The diagram numbered LHCE31820004 is stored in the directory:SRV4 DIV\drawings\DRAWINGS\LHC\E31820\E3182004.DWG13. RELATED DOCUMENTATION[ 1 ] CERN EST/98-01 (ISS)CDD Manual[ 2 ] LHC-PM-QA-305.00Drawing Management and Control[ 3 ] LHC-PM-QA-204.00Equipment Naming Conventions[ 4 ] LHC-PM-QA-201.00Quality Assurance Categories[ 5 ] IEC 60364-1 (1992-10)Electrical installations of buildings[ 6 ] TIS IS23Criteria and standard test methods for the selectionof electric cables, wires and insulated parts withrespect to fire safety and radiation resistance[ 7 ] TIS IS24Regulations applicable to electrical installations[ 8 ] IEC 60617Graphical symbols for diagrams14. ANNEXESA.1LHC equipment codes for AC electrical distributionA.2Example of an 18kV diagramA.3Example of a lighting schematic diagramA.4Example of a cooling and ventilation diagram
LHC Project Document No.LHC-PM-QA-403.00 rev 1.0Page 11 of 14EA : 400V, Assured by DieselEAC : 400V, Assured by Diesel, controls & protectionsEA : 400V, Assured by Diesel, schematic diagramEB : 400V, general servicesEBC : 400V, general services, controls & protectionsEBF : 400V, general services, poweringEBL : 400V, general services, lightingEB : 400V, general services, schematic diagramEC : 50V DC, controls and safetyECC :, 50V DC, controls and safety, cratesEC :, 50V DC, controls and safety, schematic diagramED : reserveEE : 20kV, supply from EDFEEC : 20kV, supply from EDF, controls & protectionsEE : 20kV, supply from EDF, schematic diagramEF : 18kV Safety networkEFC : 18kV Safety network, controls & protectionsEF : 18kV Safety network, schematic diagramEG : 110V DC, Controls and safetyEGC :, 110V DC, controls and safety, cratesEG :, 110V DC, controls and safety, schematic diagramEH : 66kV, high voltageEHC : 66kV, high voltage, controls & protectionsEH : 66kV, high voltage, schematic diagram & detailsEI : Miscellaneous (Earth circuits, cable ladders)EIE : Earth circuitsEIW : Cable laddersEJ : 150V DC, battery circuitsEJ : 150V DC, battery circuitsEK : 3.3 kV (& 6.3kV), normal networkEKC : 3.3 kV, normal network, controls & protectionsEK : 3.3 kV, normal network, schematic diagramEL : 3.3 kV, safety networkELC : 3.3 kV, safety network, controls & protectionsEL : 3.3 kV, safety network, schematic diagramEM : 18kV, normal networkEMC : 18kV, normal network, controls & protectionsEM : 18kV, normal network, schematic diagramEN : Transducer circuits (temp probes, .)EN : Transducer circuitsEO : 230 or 400V, supplied from UPSEO : 230 or 400V, supplied from UPSEP : 230V, anti-panic lightingEP : 230V, anti-panic lightingEQ : 400V, for cryogenicsEQ : 400V, for cryogenicsER : 400V , for power converters and machineER : 400V, for power converters and machineES : 400V, safety network (not cut by emergency stop)ES : 400V, safety network (not cut by emergency stop)ET : Remote ControlET : Remote controlEU : Emergency stop circuitsEU : Emergency stop circuitsEV : 400V for vacuum equipmentEV : 400V for vacuum equipmentEW : 400V for cooling and ventilationEW : 400V for cooling and ventilationEX : 400V for experienceEX : 400V for experienceEY : Equipment layout in buildings and structuresEY : Equipment layout in buildings and structuresEZ : 400V for radio frequencyEZ : 400V for radio frequencyAnnex A.1: LHC equipment codes for AC electrical distribution
LHC Project Document No.LHC-PM-QA-403.00 rev 1.0Page 12 of 14Annex A.2: Example of an 18kV diagram
LHC Project Document No.LHC-PM-QA-403.00 rev 1.0Page 13 of 14Annex A.3: Example of a lighting schematic diagram
LHC Project Document No.LHC-PM-QA-403.00 rev 1.0Page 14 of 14A.4Example of a cooling and ventilation diagram
INDEX The 2nd letter of the revision index. DATE Date of the modification NAME Initial and surname of the author of the modification ZONE The location of the modification (1 char 1 digit) MODIFICATION The Engineering Change Request (ECR) number of the modification or a text describing th
There are three ways to show electrical circuits. They are wiring, schematic, and pictorial diagrams. The two most commonly used are the wiring diagram and the schematic diagram. The uses of these two types of diagrams are compared in Table 1. TABLE 1 Comparison Between Wiring and Schematic Diagrams Wiring Diagrams Schematic Diagrams 1.
a time period. There are seven behavioral diagrams: Use Case Diagrams, Activity Diagrams, State Machine Diagrams, Communication Diagrams, Sequence Diagrams, Timing Diagrams and Interaction Overview Diagrams. UML 2 has introduced Composite Structure, Object, Timing and Interaction Overview diagrams.
node diagrams (N diagrams), node-link diagrams (NL diagrams) and node-link-groups diagrams (NLG diagrams). Each of these diagrams extends the previous one by making more explicit a characteristic of the input data. In N diagrams, a set of objects is depicted as points in a two or three dimensional space; see Figure1a. Clusters are typically .
23092075 CGAM - W Frame Units - Schematic 23115511 CGAM - V Frame Units - Schematic 23115510 CGAM Slant Frame Units - Schematic 23092097 RTAC - 2 Compressor Units Schematic 23094621 RTAC - 3 Compressor Units, X-Line Schematic 23094622 RTAC - 3 Compressor, Units Y-Delta Schematic 23094623 RTAC - 4 Compressor Units X-Line Schematic
see from American companies, but once you’re accustomed to reading these, you’ll recognize common characteristics in all schematics. Schematic Diagrams Schematic diagrams document the connection points and construction methods of electrical and electronic circuits. Figure 1shows a simple schematic diagram of a power sup-
D2 D2- D1 D1- PVcc1 PGND1 GNDNC PC1 IN1 PC2 IN2 7 22 NC NC R736 100 C713 0.1 R754 5.6 OPTICAL PICKUP A SCHEMATIC DIAGRAM-1 NOTE: The number which noted at the connectors on the schematic diagram as "SCHEMATIC DIAGRAM-1" or "SCHEMATIC DIAGRAM-2" indicates the schematic diagram serial numbe
The next section describes the basics of the schematic capture tool in Virtuoso used to prepare a circuit for simulation. Part 3: Schematic Capture To practice schematic capture, we will create the circuit shown in the Pre-lab section. You should already have the schematic editor window open editing the schematic view of the cell lab1.
Class Diagrams etc. (e.g. Component Diagrams) Dynamic / Behavioral Modeling: capturing execution of the system Use Case Diagrams Sequence Diagrams State Chart Diagrams etc. (e.g. Activity Diagrams) UML Diagrams Models: high-level class relations Components: Class (rectangle) - Upper section: name of the class
