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- 1. S I N G L E P H A S E 3 - P H A S E E L E C T R I C & S U P P L Y TANG LAM YU 0324966 | GOH PEI JENG 0329735 | BENJAMIN NG 0324541 | LAI EUGENE 0324075 | MELVIN TAN 0324938 | YAP CHOE HOONG 0323161
- 2. INTRODUCTION SINGLE PHASE 3 – PHASE ELECTRIC& TANG LAM YU 0324966 | GOH PEI JENG 0329735 | BENJAMIN NG 0324541 | LAI EUGENE 0324075 | MELVIN TAN 0324938 | YAP CHOE HOONG 0323161 SINGLE-PHASE Single-phase electric power is the distribution of alternating current electric power using a system in which all voltages of supply vary in unison. 3-PHASE Three-phase electric power is a common method of alternating current electric power generation, transmission and distribution.
- 3. INTRODUCTION SINGLE PHASE 3 – PHASE ELECTRIC& TANG LAM YU 0324966 | GOH PEI JENG 0329735 | BENJAMIN NG 0324541 | LAI EUGENE 0324075 | MELVIN TAN 0324938 | YAP CHOE HOONG 0323161 Basis for comparison Single phase 3 phase Definition The power supply through one conductor The power supply through three conductors Number of Wire Require 2 wires for complete the circuit Require 4 wires for complete the circuit Wave Shape Voltage 230 V 415 V Power Transfer Capability Minimum Maximum Network Simple Complicated Efficiency Less High Power Supply Connection Power Failure Occurs Do not occur Economical Less More Established Established much before Established later Increased in conductor Increases the conductor needed by 50% Increases the conductor needed by 73% Performance on motor May not perform better in motors Perform better in motors
- 4. SINGLE PHASE SINGLE PHASE 3 – PHASE ELECTRIC& TANG LAM YU 0324966 | GOH PEI JENG 0329735 | BENJAMIN NG 0324541 | LAI EUGENE 0324075 | MELVIN TAN 0324938 | YAP CHOE HOONG 0323161
- 5. ADVANTAGES & DISADVANTAGES PHASE TANG LAM YU 0324966 | GOH PEI JENG 0329735 | BENJAMIN NG 0324541 | LAI EUGENE 0324075 | MELVIN TAN 0324938 | YAP CHOE HOONG 0323161 SINGLE Lightweight, compact unit Efficient transmission Less substations required High insulation costs Not uniform torque Cannot handle overload System resonance Increased noise & vibration Shorten life
- 6. 3 PHASE SINGLE PHASE 3 – PHASE ELECTRIC& TANG LAM YU 0324966 | GOH PEI JENG 0329735 | BENJAMIN NG 0324541 | LAI EUGENE 0324075 | MELVIN TAN 0324938 | YAP CHOE HOONG 0323161
- 7. ADVANTAGES & DISADVANTAGES PHASE TANG LAM YU 0324966 | GOH PEI JENG 0329735 | BENJAMIN NG 0324541 | LAI EUGENE 0324075 | MELVIN TAN 0324938 | YAP CHOE HOONG 0323161 3 Less cost Less weight Less size Less time require to assembling Require less space Easy transportation and installation Greater cost of standby units Increased cost and inconvenience of repairs When it self-cooled, the capacity of the transformer is reduced
- 8. SINGLE PHASE 3 – PHASE ELECTRIC& TANG LAM YU 0324966 | GOH PEI JENG 0329735 | BENJAMIN NG 0324541 | LAI EUGENE 0324075 | MELVIN TAN 0324938 | YAP CHOE HOONG 0323161 COMPARISON SINGLE-PHASE Not self-starting as it does not have starting torque Difficult Lesser Pulsating torque Lower power factor Pulsating 3-PHASE Constant Self-starting Easy High Uniform torque Higher power factor
- 9. COSTING PHASE TANG LAM YU 0324966 | GOH PEI JENG 0329735 | BENJAMIN NG 0324541 | LAI EUGENE 0324075 | MELVIN TAN 0324938 | YAP CHOE HOONG 0323161 SINGLE Reduction on design cost Lower connection fees No fixed annual charges Can opt for 3-phase converter for some appliances, affordable option than rewiring
- 10. SUITABILITY PHASE TANG LAM YU 0324966 | GOH PEI JENG 0329735 | BENJAMIN NG 0324541 | LAI EUGENE 0324075 | MELVIN TAN 0324938 | YAP CHOE HOONG 0323161 SINGLE Single distribution is used when loads are mostly lighting and heating, with few large electric motors.
- 11. COSTING PHASE TANG LAM YU 0324966 | GOH PEI JENG 0329735 | BENJAMIN NG 0324541 | LAI EUGENE 0324075 | MELVIN TAN 0324938 | YAP CHOE HOONG 0323161 3 Save up construction cost, can use smaller electrical services, wiring, conduits and electrical devices Lessened energy lost as electrical current resistance would lessen energy cost Cheaper labor cost Prevent power outburst with too much of currents required to be supplied, no need to deal with damages
- 12. COSTING PHASE TANG LAM YU 0324966 | GOH PEI JENG 0329735 | BENJAMIN NG 0324541 | LAI EUGENE 0324075 | MELVIN TAN 0324938 | YAP CHOE HOONG 0323161 3 At higher efficiency of current drawn, it is suitable for industrial application. Tax incentive/ cost reduction for using achieving good Green Building Index
- 13. SUITABILITY PHASE TANG LAM YU 0324966 | GOH PEI JENG 0329735 | BENJAMIN NG 0324541 | LAI EUGENE 0324075 | MELVIN TAN 0324938 | YAP CHOE HOONG 0323161 3 Big electric motors ( more than 2 kilowatt) need three-phase power Large domestic installation have three-phase to ensure current in each phase is lower.
- 14. TANG LAM YU 0324966 | GOH PEI JENG 0329735 | BENJAMIN NG 0324541 | LAI EUGENE 0324075 | MELVIN TAN 0324938 | YAP CHOE HOONG 0323161
Editor's Notes
- I will now talk about single phase diagram. The energy come from distribution transfomer and goes to energy meter and the energy is tranferred to MCB which is miature circuit breaker this breaker is to guard the eletrical current from overheating and the usage of neutral link is to withstand high current and to protect it from damage. The copper bus bar is for collecting electric power from the incoming feeders and distributes them to the outgoing feeders
- the differences between single phase and 3 phase is that 3 phase is using the MCCB which distribute the electric current in the building and it transferred to MCB and RCD while single phase does not have MCCB and RCD. Furthermore, single phase require 2 wire while 3 phase require 4 wire to complete the circuit.