Engineering Info

Introduction :                                  Silicon Control Rectifier is electronic semi-conductor device. Its also known as current controlled device. The name "silicon controlled rectifier" is  general electric"s trade name for type of thyristor. The SCR was invented by  Gordon Hall and Frank W. "Bill" Gutzwiller in 1957. SCR is unidirectional device so that it conduct current only in one direction. Construction :  Silicon Control Rectifier (SCR) is three terminal device(Anode, Cathode, Gate),which consists four layers of semi-conductor, which form NPNP or PNPN structure having  three P-N junction terminal i.e J1, J2, J3. Anode (A) terminal is connected to p-layer, and Cathode(K) terminal is connected to n-layer  and Gate(G) terminal is connected to p-layer nearest to cathode. Fig-Symbol Of SCR Fig-Silicon Control Rectifier Fig- Actual SCR Operation & Working :                  There are three mo

Concept Of Microgrid : Microgrid is interconnected energy system. In the microgrid, interconnected load and distributed energy resource operated with grid system in parallel.The Microgrid have independent control. Advantages : Reduced Cost:  System is interconnect then it help to reduced cost of energy.       2.Reliability : Improving customer and system reliability.       3.Security :    Improve the power deliver system and security of the power resources.       4.Green power : Developing energy efficient new technology as well as environment  friendly.         5. Service differentiation : Provide different level of  service quality at different price          according to customer requirement .        6. Power system : Making the something more efficient power delivery system.                     Microgrid Architecture  : Micro-grid structure contain interface,control and protection requirement for each micro-sources,voltage control,power f

Rush to the chlorine safety kit,which is kept in the plant Confirm the exact leakage point by using chlorine torch  Stop the leakage by using the chlorine safety kit Do not pour the water on chlorine cylinder Use the nearest safety shower to clean the contaminite body party Use nearest hose reel/hydrant point to dilute the leakages Cover your noise with wet napkin Evaluate the area,if required Inform to emergency control center  Milk is antidode for chlorine Consult the doctor

  1. Circuit : "Combination of various element or parameter(e.g resistance, inductance, Capacitance) to form conducting path where current flow. 2. Charge :  They are 2 types of charge, positive and negative charge. Proton are positive charge and Electron are negative charge. The unit of charge is Coulomb, denoted by "C". 1 charge=1.601x10-19 Coulomb. 3. Current : "Flow of charge(i.e proton, electrons ) within conducting medium.

Circuit Breaker    :   Electrical circuit breaker is used for protection of devices. Circuit breaker are operated automatically when the excess current flow in the circuit.  Once excess current fault is detected, Circuit breaker operated. Circuit breaker available in different ratings and sizes. Circuit breakers are used in operation depend upon the current ratings. Circuit Breakers are : 1.Miniature Circuit Breaker ( MCB ) 2.Molded Case Circuit Breaker ( MCCB ) 3.Air Circuit Breaker ( ACB ) 4. Vacuum Circuit Breaker ( VCB ) 5. SF6 ( Sulfur Hex-fluoride Circuit Breaker ) Circuit breaker are used depend upon current ratings : 1. Miniature Circuit Breaker ( MCB )   "Current rating not more than 100 A". 2. Molded Case Circuit Breaker ( MCCB ) "Current rating upto 800 A " 3. Air Circuit Breaker ( ACB )  "Current rating upto 4000 A 4. Vacuum Circuit Breaker ( VCB )   "Voltage rating upto 11 KV &quo