Engineering Info

 "Substation is part of power system which transform voltage from high to low or low to high and distribute depend upon requirement." When the developing substation system requirement and customer requirement notice 1.System requirements : Rated voltage Rated frequency Connecting load Number of lines Generation capability  Thermal limits Tolerance in voltage Tolerance in frequency Standby capability in short circuit condition Critical faults clearing times Interconnection layout 2.Customer requirements : Depend upon the climate condition and noise produce Space requirement for construction Power quality System Reliability Availability of supply Maintability

 Exhaust fans is electrically operated device. When supply given to exhaust fan, blades of fan are rotates.  Once blades are rotate,it absorb the hot air in the room where exhaust fan fitted and released outside the room. Design of Blades : Exhaust fan blade placed in cross type to inner sides. Fig-Blades view Exhaust fans are used in household as well as industry. In the industry exhaust fan used in cooling tower to absorb the hot steam in the water. Working of exhaust fan :

Cables are used to supply electricity. Cable are used in every motor connection,controlling panel etc etc. There are different types of cables are PVC(Polyvinyl chloride) Cable,Semi Rigid-PVC, Plenum polyvinyl chloride,polyethylene,nylen etc Cable are also manufacture by current and voltage ratings Cables are available in single core,3 core, 4 core multi-core  Process for production of cables :  Bunching the copper wire as per size.Bunching increases current carrying capacity of wires. After  bunching wire is pass from nozzle, it check proper size. Polyvinyl chloride is heated as per color  required. Heated wire passed from water shower for cooling purpose. Spark test Coiling the cables Packaging cables Construction :

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