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3 Phase Appliances Protector


Chandrashekhar Pagare , SNDCOE & RC, YEOLA; Bhagwat Phad, SNDCOE & RC, YEOLA; Prof. V. V. Autade, SNDCOE & RC, YEOLA


Resistor, Capacitor, Transistor, LCD, Relay


Many of our costly appliance require 3 phase ac supply for operation. This circuit does not require a separate indicator lamp for monitoring the availability of the 3phases. 3phase appliance are used in industry on large scale as well as used in farming homes e.x.3 phase motors, 3 phase welding machines failure of any of the phases an cause the application may get damages hence it becomes important to monitor .the availability of the 3 phases supply a switch off the appliance when on or two phases get failed. The power to appliance should resume with the availability of all phases of the supply. Here time delay is added in load supply to avoid surge momentary fluctuations. The 3 phases appliance protector circuit require 3 phases supply , three 12 volt relay, a Timer ICNESS, a 4 pole 230 volt contactor, 3 phase 12 volt transformer relays RL1 and RL2 act as a sensing device for phases Y and B respectively. These relays are connected such that each acts an enabling device for the sub sequent phase. Therefore the combination of the relay forms a logical and gate connected serially.

Other Details

Paper ID: IJSRDV5I40267
Published in: Volume : 5, Issue : 4
Publication Date: 01/07/2017
Page(s): 308-312

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