Electric Motor Wiring Diagram
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Electric Motor Wiring Diagram

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Wiring Diagram voltage2 LevelsB2U1460 9005 TYPE FTFIBER OPTICPUSH BUTTON,FIBER OPTIC SEAL TO BE INACCORDANCE WITH ARTICLEHAZARDOUS LOCATIONSNONHAZARDOUS RELAY1CTMMMOTOR3CT*OT is a switch that openswhen an .or voltage2 (+)13 ()A1/+1525Z1Z21618A2/Vs2628A2File 0140 1993 Square D.All rights reserved.

This document may not be copied in whole or in part, or trans-ferred to any other media, without the written permission of Square D.document should not be viewed as sufcient instruction for those who are not otherwise qualied tooperate, service or maintain the equipment discussed.Although reasonable care has been taken to pro-vide accurate and authoritative information in this document, no responsibility is assumed bySquare D for any consequences arising out of the use of this material.QWIK-STOP and ALHPA-PAK are registered trademarks of Square D.

is a registered trademark of the National Fire Protection Association.Table of ContentsStandard Elementary Diagram and IEC Markings and Schematic Diagrams......4Control and Power Connection of Control Control63-Wire Control6-9Shunting Thermal Units During Starting Period10Overcurrent Protection for 3-Wire Control Circuits11Starting 251012Class 2511 and 251213IEC Motor 2512 and 252014GV1/GV314Drum 260115DC Starters, Constant and Adjustable Speed..............16Class 7135 and 713616Adjustable 7145 and 714617Mechanically Latched 819618Medium Voltage Motor 819818-25Solid State Protective 843026-27General Purpose 850128NEMA Control 8501 and 999929General Purpose 850130Sensing RM2 LA1/LG130IEC D-Line Control Relays31Class 850132Type P 850233-35Class 870235Type T Overload 906533-35Type S AC Magnetic 850236-40IEC Contactors and Auxiliary Contact Blocks41Input Modules and Reversing Contactors42Type S AC Magnetic 853643-508538 and 853945,491-Phase, Size 00 to 3432-Phase and 3-Phase, Size 00 to 5443-Phase, Size 6453-Phase, Size 7463-Phase Additions and Special Features47-50Integral Self-Protected 18 State of Auxiliary Contacts51-52Integral 32 and 63 State of Auxiliary Contacts53-54Wiring Diagrams55-57Type S AC Combination Magnetic Starters...........
electric motor wiring diagram
.58-59Class 8538 and 853958-593-Phase, Size 0-5583-Phase Additions and Special Features59Reduced Voltage 8606 Autotransformer Type60-61Class 8630 Wye-Delta Type62-63Class 8640 2-Step Part-Winding Type64Class 8647 Primary-Resistor Type65Class 8650 and 8651 Wound-Rotor Type66Solid State Reduced Voltage , Type MD-MG67Solid State Reduced Voltage 8660 Type MH, MJ, MK and MM68-70Table of ContentsTable 1Standard Elementary Diagram Symbols 1Table 2NEMA and IEC Terminal Markings 4Table 3NEMA and IEC Controller Markings and Table 4Control and Power Connections forTable 5Motor Lead Connections 64Table 6Enclosures for Non-Hazardous Locations 99Table 7Enclosures for Hazardous Locations 99Table 8Conductor Ampacity100Table 9Ampacity Correction Factors 101Table 10Adjustment Factors 101Table 11Ratings for 120/240 V, 3-Wire,Table 12AWG and Metric Wire Data 102Table 13Electrical Formulas for Amperes, Table 14Ratings for 3-Phase, Single-Speed,Table 15Ratings for 3-Phase, Single-Speed,Table 16Power Conversions 1041Table 1Standard Elementary Diagram Symbols SWITCHESSELECTORSPUSH BUTTONS

MOMENTARY CONTACTPUSH BUTTONS

MAINTAINED CONTACTPILOT LIGHTSINSTANT OPERATING CONTACTSTIMED CONTACTSThe diagram symbols in Table 1 are used by Square D and, where applicable, conform to NEMA (National Electrical Manufacturers Astandards.DisconnectCircuit InterrupterCircuit Breakersw/ Thermal OLCircuit Breakersw/ Magnetic OLLimit SwitchesFoot SwitchesPressure &Vacuum SwitchesLiquid Level SwitchesTemperatureActuated SwitchesFlow SwitchesSpeed (Plugging)RFRN.O.N.C.Held ClosedHeld = contact closed2-Position Selector Switch3-Position Selector Switch2-Position Selector Push ButtonN.O.N.C.N.O.& N.C.(double SingleCircuits1 DoubleCircuit Non action retarded after coil is:Standard Elementary Diagram Symbols2INDUCTORSOVERLOAD RELAYSAC MOTORSDC 1Standard Elementary Diagram Symbols (cont'd)Iron CoreAir CoreAutoIron CoreAir CoreCurrentDual Cage2-Phase, 4-WireWound RotorArmature(show 4 loops)Series Field(show 3 loops)Commutating orCompensating Field(show 2 Fixed TapsRESPotentiometer or Adjustable TapsRESWave BaseEB2B1P BaseEB2B1fThyristorStandard Elementary Diagram Symbols3OTHER COMPONENTSSUPPLEMENTARY CONTACT SYMBOLSSTATIC SWITCHING CONTROLStatic switching control is a method of switching electrical circuits without the use of contacts, primarily by solid state devices.To indicate static switching control, use the symbols shown in this table, enclosing them in a diamond as shown.TERMSSPST:Single Pole, Single ThrowSPDT:Single Pole, Double ThrowDPST:Double Pole, Single ThrowDPDT:Double Pole, Double ThrowN.O.:Normally OpenN.C.:Normally ClosedT.O.:Timed OpenT.C.:Timed ClosedPUT:Programmable Unijunction TransistorSCR:Silicon Controlled RectierTriac:Bidirectional Triode ThyristorUJT:Unijunction TransistorTable 1Standard Elementary Diagram Symbols (cont'd)AnnunciatorBellBuzzerHorn, Alarm,Siren,etc.Meter (indicatetype by letters)Single BreakSPST, N.O.Double BreakSingle BreakSPST, N.C.Double BreakSingle BreakSPDTDouble BreakSingle BreakDPST, 2 N.O.Double BreakSingle BreakDPST, 2 N.C.Double BreakSingle BreakDPDTDouble BreakCoilAux. Switch, N.O., Static ControlStandard Elementary Diagram Symbols4Table 2NEMA and IEC Terminal MarkingsTable 3NEMA and IEC Controller Markings and Elementary DiagramsNEMAPower TerminalsControl TerminalsCoil TerminalsIECPower TerminalsControl TerminalsCoil TerminalsNEMATypical Controller MarkingsTypical Elementary DiagramIECTypical Controller MarkingsTypical Elementary DiagramTable 4Control and Power Connections for Across-the-Line Starters, 600 V or less (From NEMA standard ICS 2-321A.60)1-Phase2-Phase, 4-WireL1, L2L1, L3: Phase 1L2, L4: Phase 2Ground, when usedL1 is always ungroundedOvercurrent, 1 element2 elementL1, L4L1, L2, L3Control Circuit Connected toL1, L2For Reversing, Intercha
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