Iec symbol reference
- 1. 1 of 56 APPENDIX 8 ELECTRICAL SYMBOLS
- 2. 2 of 56 Table of Contents 1. Current Systems, System Configurations And Protective Conductors .................................................... 3 2. Screening, Enclosure And Medium....................................................................................................... 5 3. Regulating Systems .............................................................................................................................. 6 4. Mechanical Controls............................................................................................................................. 7 5. Qualifying Symbols.............................................................................................................................. 8 6. Batteries, Semi-Conductors, Generators, Motors And Converters ........................................................ 10 7. Transformers, Reactors And Transductors........................................................................................... 12 8. Conductors, Lines And Cables............................................................................................................ 15 9. Overhead Line And Cable Accessories................................................................................................ 20 10. Terminals, Connections And Contact Elements................................................................................. 21 11. Resistors, Coils And Capacitors........................................................................................................ 22 12. Relay Coils And Contacts................................................................................................................. 23 13. Circuit Breakers, Contactors, Plugs, Sockets And Push Buttons......................................................... 26 14. Automatic Tripping Devices, Starting Equipment And Remote-Control Units.................................... 29 15. Switch-gear And Distribution Boxes ................................................................................................. 33 16. Protective Devices ............................................................................................................................ 34 17. Instruments And Metering Systems................................................................................................... 35 18. Lamp Fittings, Etc ............................................................................................................................ 38 19.Generating Stations And Substations (Planned).................................................................................. 41 20. Signaling Equipment And Clocks...................................................................................................... 42 21. Protection Relay Symbols................................................................................................................. 43 21.1 Device Function Numbers, Indicating The Device Function Which Causes Relay Operate ....... 43 21.2 Device Function Numbers, Indicating The Device Function Which Causes Relay Operate ....... 45 21.3 Device Function Numbers, Indicating The Device Function Which Causes Relay Operate ....... 48 21.4 Device Function Numbers, Indicating The Device Function Which Causes Relay Operate ....... 50 22. Building Electrical Installation (Light Switches)................................................................................ 51 23. Electro Acoustic Elements................................................................................................................ 54 24 Cathodic Protection ........................................................................................................................... 55 25. Hazardous Area Classification .......................................................................................................... 56
- 3. 3 of 56 APPENDIX - 8 1. Current Systems, System Configurations And Protective Conductors E0101A IEC Direct Current (DC) E0102 IEC Alternating current, (AC) low freq. (power or sub audio freq.) E0103 IEC Alternating current, medium freq. (audio or telephone freq.) E0104 IEC Alternating current, high freq. (super audio, carrier and radio freq.) E0105 IEC Direct or alternating current (DC or AC) symbol for equipment for universal use E0106 IEC Rectified current with alternating component E0107 IEC Alternating current of m phases and frequency f 63B1 IEC Three conductors within one screen E0108 IEC One Winding E0109 IEC Three separate windings E0110 IEC m Separate Windings, E0111 IEC Three-phase winding, T-Connected E0112 IEC Two-phase winding E0113 IEC Two-phase winding, four wire E0114 IEC Three-phase winding V-Connected (60o ) E0115 IEC Three-phase winding, open-delta connected
- 4. 4 of 56 E0116 IEC Three - phase winding, delta-connected E0117 IEC Three-phase winding, three wire star-connected E0118 IEC Three-phase winding, four wire, star- connected, with neutral brought out. E0119 IEC Star-delta winding configuration E0120 IEC Connection symbol, e.g. of a primary delta- secondary star- connected, three-phase transformer with clock hour figure 11. Capital letter for high voltage winding E0121 IEC Three-phase winding, three wire zig-zag or interconnected star E0122 IEC Three-phase winding, four wire zig-zag or interconnected star, with neutral brought out. E0123 ZADCO Six-phase winding, double-delta-connected E0124 IEC Six-phase winding, polygon-connected E0125 IEC Six-phase winding, star-connected E0126 IEC Danger (high voltage) E0127 IEC Place of breakdown or faults as used in short- circuit calculations or protective gear diagrams E0128 IEC Supply DC System E0129 IEC Supply DC System positive Negative Mid-Wire E0130 IEC Earth (ground), general E0131 IEC Protective earth (ground) E0132 IEC No Symbol Protective conductor and neutral conductor combined E0133 IEC Noiseless (clean) earth (ground) E0134 IEC Frame or chassis E0135 IEC Equipotentiality
- 5. 5 of 56 APPENDIX - 8 2. Screening, Enclosure And Medium E0201 IEC Enclosure, general E0202A IEC Screen (the screen may be drawn in any convenient shape) Empty E0203 IEC Boundary line (any combination of short and long strokes) E0204 IEC Liquid material E0205 IEC Gaseous material E0206 IEC Insulation material E0301 IEC Variability, general (non-inherent)
- 6. 6 of 56 APPENDIX - 8 3. Regulating Systems E0302 IEC Variability, pre-set adjustment E0303 IEC Variability, inherent E0304 IEC Variability, inherent, non-linear E0305 IEC Continuous variability E0306 IEC Variability in steps E0307 IEC Variability, continuos E0308 IEC Variability, variable in 8 steps E0309 IEC Variability, inherently automatic
- 7. 7 of 56 APPENDIX - 8 4. Mechanical Controls E0401A IEC A/ General symbol E0401B IEC B/ For use in restricted space E0402 IEC Locking device, padlock facility E0403 IEC Devices for restricted movement of a mechanical link (unblocked position) E0404 IEC Devices for restricted movement of a mechanical link (unblocked position) E0405 IEC Mechanical interlock between two devices E0406 IEC Automatic return (e.g. spring return) E0407 IEC Non-automatic return E0408 IEC Manually operated control, general E0409 IEC Manually operated control with restricted access E0410 IEC Operated by pushing E0411 IEC Operated by pulling E0412 IEC Operated by turning E0413 IEC Operated by hand-wheel E0414 IEC Operated by pedal E0415 IEC Operated by lever E0416 IEC Operated by roller E0417 IEC Operated by cam E0418 IEC Operated by crank E0419 IEC Operated by removable handle
- 8. 8 of 56 APPENDIX - 8 5. Qualifying Symbols E0503 IEC Repeating 0 times E0504 IEC Rectilinear force or motion in the direction of the arrow E0505 IEC Bi-directional pectilinear force or motion E0506 IEC Uni-directional rotation in the direction of the arrow for example clockwise E0507 IEC Bi-directional rotation limited in both directions E0508 ZADCO Start (on) E0509 ZADCO Stop (off) E0510 IEC Automatic release function E0511 IEC Light-operated arrow pointing towards symbol light generating and/or modulating arrows pointing away from symbols E0512 IEC Temperature dependence E0513 IEC Permanent magnet E0514 IEC Contactor function E0515 IEC Circuit breaker E0516 IEC Disconnector (isolator) function E0517 IEC Switch-disconnector (isolating switch) function E0518 IEC Position switch function limit switch function
- 9. 9 of 56 E0519 IEC Delayed action in the direction of movement from the arc towards its center. (to be linked with double line E0401 to the symbol of the device) E0520 IEC Spring return function E0521 IEC Non-spring return (stay put) function E0522 IEC Operating when the characteristic value is higher than the setting value E0523 IEC Operating when the characteristics value is lower than the setting value E0524 IEC Operating when the characteristics value is either higher than a given high setting or lower than a given low setting E0525 IEC Operating when the characteristic value becomes zero
- 10. 10 of 56 APPENDIX - 8 6. Batteries, Semi-Conductors, Generators, Motors And Converters E0601 IEC Primary cell or accumulator (the long line represents the positive pole, the other the negative) E0602 IEC Battery of accumulators or primary cells E0603 IEC Battery with tapping E0604 IEC Semi-conductor diode E0605 IEC Bi-directional diode (varistor) E0606 IEC Breakdown diode, undirectional E0607 IEC Breakdown diode, bi- directional E0608 IEC Thyristor, general E0609 IEC Reverse blocking thyristor n-gate (anode side controlled) E0610 IEC Reverse blocking thyristor p-gate (cathode side controlled) E0611 IEC Bi-directional thyristor E0612 IEC Transistor PNP E0613 IEC Transistor NPN E0614 IEC Machine general symbol. The asterisk shall be replaced by a letter designation as follows:- Motor(M), generator(G), synchronous Converter (c) E0615 IEC Machine capable of use as motor or generator, general E0616 IEC Mechanically coupled machines, general
- 11. 11 of 56 E0617 ZADCO Non rotary generator, oscillator E0618 IEC Stator with two windings E0619 IEC Shunt winding or separate winding E0620 IEC Series winding E0621 IEC Commutating or compensating winding E0622 IEC Synchronous converter, general E0623 IEC Power converter, general the arrow is optional E0624 IEC Rectifier, power converter AC/DC E0625 IEC Inverter, power converter DC/AC E0626 IEC DC Converter, power converter DC/DC E0627 IEC Frequency changer, power converter f1/f2 E0628 IEC Static switch E0629 IEC Synchronous generator (GS) or synchronous motor (MS), three phase, both leads of each phase brought out E0630 ZADCO DC generator with permanent magnet excitation E0631 IEC Three phase induction motor with slip ring rotor E0632 IEC Three - phase induction motor with squirrel - cage rotor. E0633 IEC Three - phase induction motor with squirrel - cage rotor, all six winding ends brought out
- 12. 12 of 56 APPENDIX - 8 7. Transformers, Reactors And Transductors E0701 IEC Choke reactor, inductor, winding multi - line representation E0702 IEC Ferro-magnetic core, general E0703 IEC Ferro-magnetic core with air gap, general E0704 IEC Winding of a transformer, general E0705 IEC Transformer, single phase with two separate windings simplified single line representation E0706 IEC Transformer, single phase with two separate windings multi line representation E0707 IEC Transformer with two tappings single phase simplified single line representation E0708 IEC Transformer with two tappings single phase multi line representation E0709 IEC Auto-transformer, single phase simplified single- line representation E0710 IEC Auto-transformer, single phase multi line representation E0711 IEC Choke reactor, inductor, winding simplified single - line representation E0712 IEC Inductor (reactor) with Ferro-magnetic core unless otherwise indicated, general multi line representation E0713 IEC Induction regulator, single phase simplified single - line representation E0714 IEC Induction regulator, single phase multi-line representation E0715 IEC Current transformer, general simplified single line representation E0716 IEC Current transformer, general multi line representation
- 13. 13 of 56 E0717 IEC Current transformer with two secondary windings on one core simplified single line representation E0718 IEC Current transformer with two secondary windings on one core multi line representation E0719 IEC Current transformer with two cores simplified single line representation E0720 IEC Current transformer with two cores multi line representation E0721 IEC Voltage transformer simplified single line representation E0722 IEC Voltage transformer, multi line representation E0723 IEC Transductor winding, general E0724 IEC Transductor core E0725 IEC Transformer with off- voltage tap changer, three-phase E0726 IEC Transformer with off- voltage tap changer, three phase E0727 IEC Current transformer, where the primary conductor forms five winding turns simplified single line representation E0728 IEC Current transformer, where the primary conductor forms five winding turns multi line representation E0729 IEC Current transformer with three primary windings simplified single line representation E0730 IEC Current transformer with three primary windings multi line representation E0736 ZADCO Current transformer surrounding three conductors (core balance) simplified single line representation E0737 IEC Current transformer surrounding three conductors (core balance) multi line representation
- 14. 14 of 56 E0731 IEC Current transformer, with one secondary tapping (three leads brought out) simplified single - line representation E0732 IEC Current transformer, with one secondary tapping (three leads brought out) multi line representation E0733 IEC Transductor element in assembled representation E0734 IEC Zig-Zag transformer E0735 IEC Tertiary winding transformer
- 15. 15 of 56 APPENDIX - 8 8. Conductors, Lines And Cables E0801 IEC Conductor or group of conductors, general E0802 IEC General symbol denoting screening of conductors E0803 IEC Conductors (n ×) within one screen E0804 IEC Flexible conductor E0805 IEC General symbol denoting twisting of conductors E0806 IEC Conductors (n ×) twisted E0807 IEC General symbol denoting cable E0808 IEC Conductors (n ×) within one cable Empty E0810 IEC Underground line E0811 IEC Line not mounted in sight E0812 IEC Line mounted in sight E0813 IEC Submarine line E0814 IEC Conductors in conduit E0815 IEC Neutral conductor E0816 IEC Earthed conductor E0817 IEC Earthed metallic screen E0818 IEC Conductors, crossing without electrical connection E0819 IEC Junction of conductors E0820 IEC Double junction of conductors
- 16. 16 of 56 E0821 IEC Common connection to a group of apparatus (e.g. multipled or looped) E0822 IEC Test point indicator E0823 IEC Conductor joint, in line splice E0824 IEC Method of indicating conductors data if the marked wires lie in one cable bundle or circuit E0825 IEC Method of indicating data for each separate wire or cable in one bundle or channel E0826 IEC Method of indicating data for each separate wire or cable if more than one cable is represented by one line E0827 IEC Conductors dividing E0828 IEC Conductors dividing E0829 IEC Conductors dividing E0830 IEC Bundle of wires or cables E0831 IEC Bundle of wires or cables, crossing E0832 IEC Bundle of wires or cables, dividing E0833 IEC Wiring or conductor going upwards E0834 IEC Wiring or conductor going downwards E0835 IEC Wiring or conductor passing through vertically Empty
- 17. 17 of 56 Empty Empty E0839 IEC Coaxial pair, general E0840 IEC Coaxial pair with outer conductor connected to earth E0841 IEC Coaxial pair with screen E0842 IEC End of coaxial conductor E0843 IEC Conductor or cable not connected E0844 IEC Conductor or cable not connected and especially insulated E0845 IEC Four separate circuits or conductors E0846 IEC Three phase circuit 50 Hz three conductors of 120mm2 and neutral of 50mm2 single -line representation E0847 IEC Three phase circuit 50 Hz three conductors of 120mm2 and neutral of 50mm2 for multi-line representation E0848 IEC Three phase circuit 50 Hz three conductors of 120mm2 and neutral of 50mm2 for multi-line representation E0849 IEC Coaxial socket E0850 IEC Coaxial plug E0851 IEC Earth bar E0852 ZADCO Main plant earth electrode E0853 ZADCO Supplementary earth electrode E0854 ZADCO Equipment frame earth connection E0855 ZADCO Earth cable on surface E0856 ZADCO Earth cable branch connection
- 18. 18 of 56 E0857 ZADCO Conduit laid in floor screed E0858 ZADCO Conduit run on surface E0859 ZADCO Conduit concealed in slab E0860 ZADCO Cable run on surface E0861 ZADCO Micc cable run on surface E0862 ZADCO Cable tray E0863 ZADCO G.I / PVC trunking E0864 ZADCO Elect./Inst./Telecom. cable in under ground PVC duct E0865 ZADCO Under ground earth cable in excavated trench (Existing) E0866 ZADCO Under ground earth cable in excavated trench (proposed) E0867 ZADCO Earth cable in concrete trench (existing) E0868 ZADCO Earth cable in concrete trench (proposed) E0869 ZADCO Elect../Inst./Telecom. under ground cable in excavated trench (existing) E0870 ZADCO Elect./Inst./Telecom. under ground cable in excavated trench (proposed) E0871 ZADCO Elect./Inst./Telecom. cable in concrete trench (existing) E0872 ZADCO Elect./Inst./Telecom. cable in concrete trench (proposed) E0873 IEC Neutral conductor E0874 IEC Protective conductor E0875 IEC Combined protective and neutral conductor E0876 IEC Three-phase wiring with neutral conductor and protective conductor
- 19. 19 of 56 E0877 IEC Three-phase and neutral or three conductors and neutral E0878 IEC Three-phase or three conductors E0879 IEC Single-phase and neutral or single conductor and neutral E0880 IEC Two-phase or two conductors
- 20. 20 of 56 APPENDIX - 8 9. Overhead Line And Cable Accessories Empty E0910 ZADCO Conduit entry E0911 ZADCO Stuffing gland E0912 IEC Straight-through joint box underground E0913 IEC Junction for three cables underground E0914 IEC Junction for four cables underground E0915 IEC Cable sealing end box E0916 IEC Branching box (e.g. with four outlets)
- 21. 21 of 56 APPENDIX - 8 10. Terminals, Connections And Contact Elements E1001 IEC Terminal connections of conductors, general E1002 IEC Terminal connections of conductors, general moveable contact hinged E1003 IEC Terminal strip E1004 ZADCO Connection link with bolted contacts E1005A IEC Connecting link, closed E1005B IEC Connecting link, open E1006 IEC Brush on commuter or slip ring E1007 ZADCO Draw-out representation of switch-gear accessories E1005A IEC Mated Plug and socket
- 22. 22 of 56 APPENDIX - 8 11. Resistors, Coils And Capacitors E1101 IEC Resister E1102 IEC Resistor with fixed tappings E1103 IEC Inductor, coil, winding, choke E1104 IEC Shunt E1105 IEC Capacitor, capacity, general E1106 IEC Polarized capacitor, general E1107 IEC Polarized electrolytic capacitor E1108 IEC Non-polarized electrolytic capacitor E1109 IEC Chasis capacitor E1110 IEC Feed through capacitor E1111 IEC Code letters, indicating type of impedance 1 impedance E1111 IEC 2. Reactance E1111 IEC 3. Self inductance E1111 IEC 4. Resistance E1112 IEC Variable resistor E1113 ADC O Variable resistor with inherent non-linear character E1114 IEC Resistor with inherent non-linear character E1115 IEC Resistor with inherent non- linear character E1116 IEC Resistor with sliding contact E1117 IEC Shunt / series capacitor
- 23. 23 of 56 APPENDIX - 8 12. Relay Coils And Contacts E1201 IEC CON= Contactor IR = Interposing Relay CC = Closing coil TC = Tripping Coil K = Re- Acceleration E1202 IEC Non-inductive winding (bifilar) E1203 IEC Relay coil with one winding E1204 IEC Relay coil with two windings, separate representation E1205 IEC Relay coil of a remnant relay E1206 IEC Relay coil of a slow releasing relay E1207 IEC Relay coil of a very slow-releasing relay E1208 IEC Relay coil of slow- operating relay E1209 IEC Relay coil of a very slow operating relay E1210 IEC Relay coil of a high-speed relay (fast-operating and releasing) E1211 IEC Relay coil of a polarized relay E1212 IEC Relay coil of an AC relay E1213 IEC Relay coil of a relay un- affected by alternating current E1214 IEC Relay coil of a mechanically latched relay E1215 IEC Relay coil of an impulse, sequence relay E1216 IEC Relay coil of a slow- operating and slow releasing relay
- 24. 24 of 56 E1217 IEC Actuating device for a thermal relay(e.g. thermal overload relay) E1218 IEC Make contact E1219 IEC Break contact E1220 IEC Change over contact, break before make E1221 IEC Change over contact, make before break E1222 IEC Contact with two breaks E1223 IEC Contact with two breaks E1224 IEC Two way contact with center-off position E1225 IEC Two-way contact with center-off position with spring return from the left-hand position, but not from the right-hand one (stay put) E1226 IEC Passing make contact closing momentarily when its operating device is actuated E1227 IEC Passing make contact closing momentarily when its operating device is released E1228 IEC Passing make contact closing momentarily when its operating device is actuated or released E1229 IEC Make contact (of a multiple contact assembly) which is early to operate relative to the other contacts of the assembly E1230 IEC Make contact (of a multiple contact assembly) which is late to operate relative to the other contacts of the assembly E1231 IEC Break contact (of a multiple contact assembly) which is early to operate relative to the other contacts of the assembly E1232 IEC Break contact (of a multiple contact assembly) which is late to operate relative to the other contacts of the assembly E1233 IEC Flasher, operated by an actuating device of a thermal relay E1234 IEC Make contact delayed when closing E1235 IEC Break contact delayed when closing E1236 ZADCO Break contact delayed when opening
- 25. 25 of 56 E1236A ZADCO Make contact delayed when opening E1237 IEC Self operating thermal break contact E1238 IEC Break contact of a thermal relay E1239 ZADCO Change-over contact, break before make of a polarized relay 226C9 ZADCO Single-pole, 4 position switch with position diagram 226C10 ZADCO Single-pole, 6 position switch with a wiper that bridger only while passing from one position to the next Empty Empty
- 26. 26 of 56 APPENDIX - 8 13. Circuit Breakers, Contactors, Plugs, Sockets And Push Buttons E1301 IEC Switch E1302 IEC Change over switch, break before make E1303 IEC Two way switch with center-off position E1304 IEC Circuit breaker E1305 IEC Disconnector (isolator) E1306 IEC Switch disconnector (on- load isolating switch) E1307 IEC Switch disconnector (on-load isolating switch) with automatic release E1308 ZADCO Two way disconnector (isolator) with interruption of circuit E1309 ZADCO Two way disconnector (isolator) without interruption of circuit E1310 IEC Two way disconnector (isolator) with center off position E1311 IEC Contactor E1311A IEC Contactor normally closed E1312 IEC Contactor with automatic release E1313 IEC 3-position switch, normally closed (only opening when operated to the left) E1314 IEC Mercury switch E1315 IEC Multi-pole plug and socket isolator, N-pole
- 27. 27 of 56 E1316 IEC Connector assembly fixed portion E1317 IEC Connector assembly movable portion E1318 IEC Mated connectors, plug side fixed and socket side movable E1319 ZADCO MCB (Miniature circuit breaker with thermal & magnetic protection) E1320 ZADCO MCCB (Mounded case circuit breaker with thermal & magnetic over current protection) E1320A ZADCO RCCB (Restricted current circuit breaker with thermal & magnetic over current protection and earth leakage protection) E1320B ZADCO ELCB (Earth leakage circuit breaker with earth leakage protection) E1321 ZADCO Triple pole circuit breaker e.g. air C.B fitted with 3 thermal over current relays and 3 thermo magnetic relays E1322 ZADCO E1323 ZADCO E1324 IEC E1325 IEC Earth Switch Rack draw-out type circuit breaker (typical for other draw-out components) Remote control unit, rotary stack type with spring return to neutral position and padlock facility Manually operated three-pole switch 1. Simplified single- line representation E1326 IEC Manually operated three-pole switch 2. Multi-line reorientation E1327 IEC Push - Button E1328 IEC Push - button with indicator lamp E1329 IEC Push - button with restricted access (glass cover, etc)
- 28. 28 of 56 E1330 IEC Start push button (non-locking) E1331 IEC Stop push button (non-locking) E1332 IEC Emergency stop push button E1333 ZADCO Selector switch - 3 position E1334 ZADCO Selector switch - 2 position E1335 IEC Plug & socket (male & female) E1336 IEC Limit switch - make contact E1337 IEC Limit switch - break contact
- 29. 29 of 56 APPENDIX - 8 14. Automatic Tripping Devices, Starting Equipment And Remote-Control Units E1401 IEC Measuring relay or related device, general E1402 IEC Measuring relay controlled by two or more mutually dependent magnitudes Empty Empty E1405-1 IEC Over current E1405-2 IEC Undervoltage E1405-3 IEC Differential current E1405-4 IEC Reverse current E1405-5 IEC Time E1405-6 IEC Frequency E1405-7 IEC Earth-fault current E1405-8 IEC Reverse power E1405-9 IEC Overspeed E1405-10 IEC Phase-failure detection E1405-11 IEC Interturn short circuits E1405-12 IEC Out of synchronism (out of step)
- 30. 30 of 56 E1405-13 IEC Time delay E1405-14 IEC Inverse time lag characteristic E1405-15 IEC Thermal overload (bimetal) E1405-16 IEC Electromagnetic
- 31. 31 of 56 E1405-17 IEC Temperature E1405-18 IEC Pressure E1405-19 IEC Fluid level E1405-20 IEC Flow E1405-21 IEC Direction of energy flow towards from bus bars E1405-22 IEC Direction of energy flow away from bus bars E1405-23 IEC Bi-directional energy flow E1408 IEC Blow out device coil type E1409 IEC Blow out device permanent magnet type E1410 IEC Starter, general (for use on single-line diagrams) E1411 IEC Automatic starter E1412 IEC Automatic starter E1413 IEC Starter with automatic release E1414 ZADCO Direct on-line contactor starter with protective device E1415 IEC Direct on line contactor starter for reversing motors E1416 IEC Series parallel starter E1417 IEC Auto transformer starter E1418 IEC Star delta starter E1419 IEC Pole changing starter (e.g 8/4 poles) E1420 ZADCO Remote control unit with ammeter controlled by rotary stack switch for use on single line diagram
- 32. 32 of 56 E1421 ZADCO Remote control unit with ammeter controlled by push buttons for use on single line diagrams E1422 ZADCO Remote control unit as E1420 & E1421, but for use on layouts only E1423 ZADCO Remote control unit without ammeter controlled by rotary stack switch for use on single line diagrams E1424 ZADCO Remote control unit without ammeter controlled by push buttons for use on single line diagrams E1425 ZADCO Remote control unit as E1423& E1424, but for use on layouts only E1426 ZADCO Safety switch for use on single line diagram E1427 ZADCO Safety switch for use on layouts only E1428 ZADCO Emergency switch for use on single line diagrams E1429 ZADCO Emergency switch for use on layouts only E1430 ZADCO Remote ammeter for use on layouts only E1431 ZADCO Remote control unit with push buttons for use in P & ID’S E1432 ZADCO Remote control unit with start/stop push buttons and local/remote selector switch
- 33. 33 of 56 APPENDIX - 8 15. Switch-gear And Distribution Boxes E1501 IEC Switch gear, general E1502 ZADCO Control desk E1503 IEC Distribution center or bus bars with incoming and outgoing, circuits E1504 IEC Over-ground, weather- proof enclosure, general symbol pillar box
- 34. 34 of 56 APPENDIX - 8 16. Protective Devices E1601 IEC Fuse with supply side indicated by thick line E1602 IEC Fuse with supply side indicated by thick line E1603 IEC Fuse switch E1604 IEC Fuse disconnector (fuse isolator) E1605 IEC Fuse switch disconnector (on load isolating fuse switch) E1606 IEC Fuse with mechanical linkage (striker fuse) E1607 IEC Fuse with separate alarm contact E1608 IEC Fuse with alarm contact (3-terminals) E1609 IEC Spark gap E1610 IEC Lightning arrester E1611 IEC Over-voltage arrester E1612 IEC Protective gas discharge tube E1613 IEC Link (closed) E1614 IEC Link (open)
- 35. 35 of 56 APPENDIX - 8 17. Instruments And Metering Systems E1701 IEC Indicating instrument, general E1702 IEC Recording instrument, general E1703 IEC Integrating instrument, general E1705 IEC Telemetering transmitter E1706 IEC Telemetering receiver E1707 IEC Measuring instrument e.g. voltmeter for controlling telemetering transmitter E1708 IEC Telemetering receiver controlling a measuring instrument (e.g. voltmeter) E1709 IEC Permanent-magnet moving coil instrument E1710 IEC Permanent magnet moving coil ratio-meter (quotient meter) E1711 IEC Moving permanent magnet instrument E1712 IEC Moving permanent magnet ratio-meter (quotient meter) E1713 IEC Electro-dynamic, ironless instrument E1714 IEC Electro-dynamic, ironless ratio-meter (quotient meter) E1715 IEC Electro-dynamic, iron- cored instrument E1716 IEC Electro-dynamic, iron- cored instrument E1717 IEC Moving -iron system E1718 IEC Moving-iron ratio-meter (quotient meter) E1719 IEC Vibrating reed instrument E1720 IEC Electrostatic instrument
- 36. 36 of 56 E1721 IEC Thermal (hot wire) instrument E1722 IEC Bimetallic instrument E1723 IEC Non-insulated thermocouple, thermal converter E1724 IEC Insulated thermocouple, thermal converter E1725 IEC Accuracy class index, e.g. 1.5 with errors expressed as a percentage of the true valve E1726 IEC Test voltage above 500 v e.g. 2kv (indication “0” for apparatus not subject to dielectric tests) E1727 IEC Instrument used with the supporting surface vertical E1728 IEC Instrument used with the supporting surface horizontal Empty E1730 IEC Zero adjuster E1731 IEC Electronic device in measuring circuit E1732 IEC Electronic device in auxiliary circuit E1733 IEC Thermocouple, general (the negative pole is represented by the thicker line) E1734 IEC Thermocouple, directly heated, non-insulated heating element E1735 IEC Thermocouple indirectly heated insulated heating element E1736 IEC Instrument shunt E1737 IEC Amplifier E1738 IEC Single phase bridge connected rectifier Empty
- 37. 37 of 56 * Note: Terminologies for use in meters applicable to E1701, E1702, E1703 1. Ampere 2. Volt 3. Differential volt 4. Double volt 5. Watt 6. Watt-hour 7. Hertz 8. Synchroscope 9. Power-factor 10. Reactive volt-ampere hour 11. Volt-ampere hour 12. OHM 13. Hour 14. Direction indicator 15. Minute 16. Second 17. Time 18. Multiples and sub-multiples Tera =1012 Giga = 109 Mega = 106 Kilo = 103 Mili = 103 Micro= 106 Nano= 109 Pico= 1012 19. Ammeter selector switch ZADCO 20. Voltmeter selector switch ZADCO 21. Selector switch ZADCO 22. Auto voltage regulator ZADCO
- 38. 38 of 56 APPENDIX - 8 18. Lamp Fittings, Etc E1801 IEC Lighting outlet position, shown with wiring E1802 ZADCO Emergency lamp fitting, maintained E1803 ZADCO Emergency lamp fitting, non maintained E1804 IEC Emergency lighting luminaire on special circuit E1805 ZADCO Discharge lamp, general E1806 IEC Discharge lamp (e.g. Hg =mercury, no. = sodium) E1807 IEC Neon (signal) lamp E1808 IEC Signal Lamp / Illuminating Lamp * * Notes: If it is desired to indicate the color (c) a notation in accordance with IEC publication 62 is placed adjacent to the symbol e.g. RD - redBU-blue YE-yellow WH-white GN-green AM-amber If it is desired to indicate the type of lamp, a notation according to the following codes is placed adjacent to the symbol: Ne-neon Xe-xenon Nq-sodium vapour Hg-mercury I-iodine IN-incandescent EL-electroluminescent ARC-fluorescent FL-fluorescent IR-infra-red UV-ultra-violet LED-light-emitting diode
- 39. 39 of 56 Empty E1810 ZADCO Suspended incandescent light fitting E1811 ZADCO Wall mounted incandescent light fitting E1812 IEC Fluorescent lamp, general symbol E1813 IEC Luminaries with two fluorescent tubes E1813A ZADCO Luminaries with five fluorescent tubes E1814 IEC Fluorescent lamp on special circuit, e.g. emergency circuit E1815 IEC Spot light E1816 IEC Flood light E1817 ZADCO Flood light mounted on lighting mast E1818 IEC Navigation lamp E1819 IEC Electrical appliance E1820 IEC Heating element (e.g from heater) E1821 IEC Signal lamp, flashing type E1822 IEC Auxiliary apparatus for discharge lamp (e.g. ballast) E1823 IEC Light dependent resistor photo-conductive device with symmetrical conductivity E1824 IEC Photodiode photo-conductive device with asymmetrical conductivity E1825 IEC Optical coupling device opto isolator shown with light emitting diode and photo-transistor E1826 IEC Emergency lighting with battery back-up E1827 ZADCO Fluorescent lamp with battery back-up
- 40. 40 of 56 E1828 ZADCO Bulkhead light fitting E1829 ZADCO Lighting pole E1830 ZADCO Lighting pole
- 41. 41 of 56 APPENDIX - 8 19.Generating Stations And Substations E1901 IEC Generating station (power plant), general E1902 IEC Generating station, oil or gas E1903 IEC Generating station, thermo-electric E1904 IEC Generating station hydro-electric E1905 IEC Generating station oil or gas with gas turbine E1906 IEC Substation, general (e.g. intake station E1907 IEC Plant station Empty GENERATING STATIONS AND SUBSTATIONS (IN SERVICE) E1911 IEC Generating station (power plant), general E1912 IEC Generating station, oil or gas E1913 IEC Generating station, thermo-electric E1914 IEC Generating station hydro-electric E1915 IEC Generating station oil or gas with gas turbine E1916 IEC Substation, general (e.g. intake station) E1917 IEC Plant station E1918 IEC Rectifier substation
- 42. 42 of 56 APPENDIX - 8 20. Signaling Equipment And Clocks E2001 IEC Bell, electric, general E2002 IEC Buzzer, electric, general E2003 IEC Horn, electric, general E2004 IEC Siren, electric, general E2005 IEC E2006 IEC E2007 IEC E2008 IEC Electromechanical position indicator with one de-energized and two operating positions Electro mechanical indicator with alarm con tact Clock, general Master clock E2009 IEC E2010 IEC E2011 IEC E2012 ZADCO Time - switch Synchronous clock (e.g. 50 HZ) Clock with an electric motor rewind Drop enunciator make contact actuated by the actuating system, make contact actuated by the target E2013 IEC Mechanical indicator E2014 IEC Common alarm indication
- 43. 43 of 56 APPENDIX - 8 21. Protection Relay Symbols 21.1 Device Function Numbers, Indicating The Device Function Which Causes Relay Operate E2101 IEEE 1. Master element E2101 IEEE 2. Time-delay starting or closing relay E2101 IEEE 3. Checking or interlocking relay E2101 IEEE 4. Master contactor E2101 IEEE 5. Stopping device E2101 IEEE 6. Starting circuit breaker E2101 IEEE 7. Rate-of-change relay E2101 IEEE 8. Control power disconnecting device E2101 IEEE 9. Reversing device E2101 IEEE 10. Unit sequence switch E2101 IEEE 11. Multifunction device E2101 IEEE 12. Over-speed device E2101 IEEE 13. Synchronous-speed device E2101 IEEE 14. Under-speed device E2101 IEEE 15. Speed or frequency matching device E2101 IEEE 16. Reserved for future application E2101 IEEE 17. Shunting or discharge switch E2101 IEEE 18. Accelerating or decelerating device E2101 IEEE 19. Starting-to-running transition contactor
- 44. 44 of 56 E2101 IEEE 20. Electrically operated valve E2101 IEEE 21. Distance relay E2101 IEEE 22. Equalizer circuit breaker E2101 IEEE 23. Temperature control device E2101 IEEE 24. Volts per hertz relay E2101 IEEE 25. Synchronizing or synchronism-check device E2101 IEEE 26. Apparatus thermal device E2101 IEEE 27. Under-voltage relay E2101 IEEE 28. Flame detector E2101 IEEE 29. Isolating contactor E2101 IEEE 30. Annunciator relay E2101 IEEE 31. Separate excitation device
- 45. 45 of 56 APPENDIX - 8 21.2 Device Function Numbers, Indicating The Device Function Which Causes Relay Operate E2101 IEEE 32. Directional power relay E2101 IEEE 33. Position switch E2101 IEEE 34. Master sequence device E2101 IEEE 35. Brush-operating or slip-ring short- circuiting device E2101 IEEE 36. Polarity or polarizing voltage device E2101 IEEE 37. Undercurrent or under- power relay E2101 IEEE 38. Bearing protective device E2101 IEEE 39. Mechanical condition monitor E2101 IEEE 40. Field relay E2101 IEEE 41. Field circuit breaker E2101 IEEE 42. Running circuit breaker E2101 IEEE 43. Manual transfer or selector device E2101 IEEE 44. Unit sequence starting relay E2101 IEEE 45. Atmospheric condition monitor E2101 IEEE 46. Reverse-phase or phase-balance current relay E2101 IEEE 47. Phase-sequence or phase-balance voltage relay E2101 IEEE 48. Incomplete sequence relay E2101 IEEE 49. Machine or transformer thermal relay E2101 IEEE 50. Instantaneous over- current relay E2101 IEEE 51. AC time over- current relay
- 46. 46 of 56 E2101 IEEE 52. AC circuit breaker E2101 IEEE 53. Exciter or DC generator relay E2101 IEEE 54. Turning gear engaging device E2101 IEEE 55. Power factor relay
- 47. 47 of 56 E2101 IEEE 56. Field application relay E2101 IEEE 57. Short-circuiting or grounding device E2101 IEEE 58. Rectification failure relay E2101 IEEE 59. Over-voltage relay
- 48. 48 of 56 APPENDIX - 8 21.3 Device Function Numbers, Indicating The Device Function Which Causes Relay Operate E2101 IEEE 60. Voltage or current balance relay E2101 IEEE 61. Density switch or sensor E2101 IEEE 62. Time-delay stopping or opening relay E2101 IEEE 63. Pressure switch E2101 IEEE 64. Ground detector relay E2101 IEEE 65. Governor E2101 IEEE 66. Notching or jogging device E2101 IEEE 67. AC directional over-current relay E2101 IEEE 68. Blocking relay E2101 IEEE 69. Permissive control device E2101 IEEE 70. Rheostat E2101 IEEE 71. Level switch E2101 IEEE 73. Load-resistor contactor E2101 IEEE 74. Alarm relay E2101 IEEE 75. Position changing mechanism E2101 IEEE 76. DC over-current relay E2101 IEEE 77. Telemetering device E2101 IEEE 78. Phase-angle measuring relay E2101 IEEE 79. reclosing relay E2101 IEEE 80. Flow switch
- 49. 49 of 56 E2101 IEEE 81. Frequency relay E2101 IEEE 82. DC load-measuring reclosing relay E2101 IEEE 83. Automatic selective control or transfer relay E2101 IEEE 84. Operating mechanism E2101 IEEE 85. Carrier or pilot-wire relay E2101 IEEE 86. Lockout relay E2101 IEEE 87. Differential protective relay E2101 IEEE 88. Auxiliary motor or motor generator
- 50. 50 of 56 APPENDIX - 8 21.4 Device Function Numbers, Indicating The Device Function Which Causes Relay Operate E2101 IEEE 89. Line switch E2101 IEEE 90. Regulating device E2101 IEEE 91. Voltage directional relay E2101 IEEE 92. Voltage and power directional relay E2101 IEEE 93. Field-changing contactor E2101 IEEE 94. Tripping or trip-free relay E2101 IEEE 95, 96, 97, 98, 99 Used only for specific applications in individual installations if none of the functions assigned to the numbers from 1 to 94 is suitable
- 51. 51 of 56 APPENDIX - 8 22. Building Electrical Installation (Light Switches) E2201 ZADCO 5A, one way, single pole switch to identify the number of gangs use: 1G, 2G, 3G, and 4G E2202 ZADCO 20/15A, one way, single pole switch to identify the number of gangs use: 1G, 2G, 3G, and 4G E2203 ZADCO SA, two way, single pole switch to identify the number of gangs use: 1G, 2G, 3G and 4G E2204 ZADCO 20/15A two way, single pole switch to identify the number of gangs use: 1G, 2G, and 4G E2205 ZADCO 5A, intermediate way switch to identify the number of gangs use: 1G, 2G, 3G, and 4G E2206 ZADCO 20/15A, intermediate way switch to identify the number of gangs use: 1G, 2G, 3G, and 4G E2207 ZADCO Switch, period limiting Empty E2209 ZADCO One way, double pole switch E2210 ZADCO Metal clad one way, single pole switch E2211 ZADCO Metal clad one way, double pole switch E2212 ZADCO Water tight single pole switch Empty E2214 ZADCO Pendant switch E2215 IEC Dimmer E2216 ZADCO 13A switched socket out let E2217 ZADCO 15A switched socket outlet E2218 ZADCO Multiple switched socket out let (e.g. 2 plugs) E2219 ZADCO 110V switched socket outlet E2220 ZADCO 24V switched socket outlet
- 52. 52 of 56 E2221 ZADCO Welding socket outlet E2222 ZADCO Switched fused spur unit with outlet E2223 ZADCO Telephone socket outlet E2224 ZADCO TV socket outlet E2226C ZADCO Mirror light with shaver outlet E2226D ZADCO 2 Pole isolator E2226E ZADCO 3 Pole isolator E2226F ZADCO 3 Pole & neutral isolator E2225 IEC Plug E2226 ZADCO 20A flex outlet E2226A ZADCO 45A flex outlet E2226B ZADCO Shaver outlet E2226G ZADCO Switched fused spur unit without outlet E2226H ZADCO Fused spur unit with outlet E2226J ZADCO Fused spur unit without outlet E2227 IEC Electric bell E2228 ZADCO Bell push E2229 ZADCO Bell indicator N=NO. of ways E2230 ZADCO Bell transformer E2231 IEC Buzzer E2232 ZADCO Smoke detector E2233 ZADCO Heat detector E2234 IEC Fire alarm break glass unit (manually operated) E2235 ZADCO Fire and gas control panel
- 53. 53 of 56 E2236 ZADCO Automatic fire detection E2237 ZADCO Self contained water heater E2238 ZADCO Thermostat E2239 ZADCO Telephone junction box Empty E2241 ZADCO Switch board / distribution board fuse board E2242 ZADCO Exhaust fan wall mounted E2243 ZADCO Exhaust fan roof mounted E2244 ZADCO Fan regulator E2245 ZADCO Cooker control unit E2246 ZADCO Main distribution board E2247 ZADCO Ceiling fan
- 54. 54 of 56 APPENDIX - 8 23. Electro Acoustic Elements E2301 ZADCO Microphone E2302 ZADCO Earphone E2303 ZADCO Loudspeaker E2304 ZADCO Two way intercom system E2305 ZADCO Pickup E2306 ZADCO Sound recorder
- 55. 55 of 56 24 Cathodic Protection E2401 ZADCO Transformer rectifier E2402 ZADCO Current control box E2403 ZADCO Borehole grounded E2404 ZADCO Horizontal grounded
- 56. 56 of 56 25. Hazardous Area Classification EH02 API Division 1 EH03 API Division 2 EH04 API Unclassified (SAFE) area