A Activity diagram used in UML 6/9 and SysML B Bachman diagram Booch used in software engineering Block diagram Block Definition Diagram BDD used in SysML C Carroll diagram Cartogram Catalytic cycle Chemical equation Curly arrow diagram Category theory diagrams Cause-and-effect diagram Chord diagram Circuit diagram Class diagram from UML 1/9 Collaboration diagram from UML 2.0 Communication diagram from UML 2.0 Commutative diagram Comparison diagram Component diagram from UML 3/9 Composite structure diagram from UML 2.0 Concept map Constellation diagram Context diagram Control flow diagram Contour diagram Cordier diagram Cross functional flowchart D Data model diagram Data flow diagram Data structure diagram Dendrogram Dependency diagram Deployment diagram from UML 9/9 Dot and cross diagram Double bubble map used in education Drakon-chart E Entity-Relationship diagram ERD Event-driven process chain Euler diagram Eye diagram a diagram of a received telecommunications signal Express-G Extended Functional Flow Block Diagram EFFBD F Family tree Feynman diagram Flow chart Flow process chart Flow diagram Fusion diagram Free body diagram G Gantt chart shows the timing of tasks or activities used in project management Grotrian diagram Goodman diagram shows the fatigue data example: for a wind turbine blades H Hasse diagram HIPO diagram I Internal Block Diagram IBD used in SysML IDEF0 IDEF1 entity relations Interaction overview diagram from UML Ishikawa diagram J Jackson diagram K Karnaugh map Kinematic diagram L Ladder diagram Line of balance Link grammar diagram M Martin ERD Message Sequence Chart Mind map used for learning, brainstorming, memory, visual thinking and problem solving Minkowski spacetime diagram Molecular orbital diagram N N2 Nassi Shneiderman diagram or structogram a representation for structured programming Nomogram Network diagram O Object diagram from UML 2/9 Organigram Onion diagram also known as "stacked Venn diagram" P Package diagram from UML 4/9 and SysML Parametric diagram from SysML PERT Petri net shows the structure of a distributed system as a directed bipartite graph with annotations Phylogenetic tree - represents a phylogeny evolutionary relationships among groups of organisms Piping and instrumentation diagram P&ID Phase diagram used to present solid/liquid/gas information Plant Diagram Pressure volume diagram used to analyse engines Pourbaix diagram Process flow diagram or PFD used in chemical engineering Program structure diagram R Radar chart Radial Diagram Requirement Diagram Used in SysML Rich Picture R-diagram Routing diagram S Sankey diagram represents material, energy or cost flows with quantity proportional arrows in a process network. Sentence diagram represents the grammatical structure of a natural language sentence. Sequence diagram from UML 8/9 and SysML SDL/GR diagram Specification and Description Language. SDL is a formal language used in computer science. Smith chart Spider chart Spray diagram SSADM Structured Systems Analysis and Design Methodology used in software engineering Star chart/Celestial sphere State diagram are used for state machines in software engineering from UML 7/9 Swim lane Syntax diagram used in software engineering to represent a context-free grammar Systems Biology Graphical Notation a graphical notation used in diagrams of biochemical and cellular processes studied in Systems biology System context diagram System structure Systematic layout planning T Timing Diagram: Digital Timing Diagram Timing Diagram: UML 2.0 TQM Diagram Treemap U UML diagram Unified Modeling Language used in software engineering Use case diagram from UML 5/9 and SysML V Value Stream Mapping Venn diagram Voronoi diagram W Warnier-Orr Williot diagram Y Yourdon-Coad see Edward Yourdon, used in software engineering
Although delta windings are often operated ungrounded, a leg of the delta can be center tapped and grounded, or a corner of the delta can be grounded. In a wye configuration, one end of each of the three windings is connected to form a neutral. A phase is connected to the other end of the three windings.
Three Phase Wiring Diagrams ALWAYS USE WIRING DIAGRAM SUPPLIED ON MOTOR NAMEPLATE colored leads are only applicable on the NEW ROLLED STEEL motor lines Single Phase Wiring Diagrams ALWAYS USE WIRING DIAGRAM SUPPLIED ON MOTOR NAMEPLATE FOR MOTORS WITH THERMAL PROTECTION
A three phase transformer is built for a specific connection and voltage transformation and the unit will have a nameplate with the internal connections shown. Three phase transformers are formed in either of two ways. The first method is to connect three single phase transformers to form a three phase bank.
When comparing Delta vs. Wye systems, both measure 208VAC between any two hot wires, but 3 phase Wye systems also measure 120VAC between any hot wire and neutral wire. In other words, the Wye system’s neutral wire is what allows two different voltages and powers both 3 phase and single phase devices in the data center.
a three (3) element Wye circuit will reduce the wattage output by 50%. Heating elements are basically in series on single phase power. R 1 R 2 I P I L V P V L Typical Heater Wiring Diagrams The following diagrams show typical heater wiring schematics. Single Phase AC circuits where line voltage and current do not exceed thermostat rating.
A 3 Phase Wye connected system consists of three hot lines, or phases, commonly referred to as X, Y, Z, a neutral, and a ground wire for a total of five wires in a power distribution cable. In North America the most common 3 Phase Y voltages are either 120 208 VAC or 277 480 VAC, while internationally the most common 3 Phase voltage is 230 400 VAC.
Step 3. Examine the motor nameplate for wiring information. The nameplate will specify the motor voltages and may give specific wiring information. Many motors can be wired for a high and low voltage and for either Delta or Wye (sometimes called Y or Star wiring).
In the case of three phase transformer windings, three forms of connection are possible: “star” (wye), “delta” (mesh) and “interconnected star” (zig zag). The combinations of the three windings may be with the primary delta connected and the secondary star connected, or star delta, star star or delta delta,...
In a symmetrical three phase four wire, wye system, the three phase conductors have the same voltage to the system neutral. The voltage between line conductors is √ 3 times the phase conductor to neutral voltage: The currents returning from the customers' premises to the supply transformer all share the neutral wire.