Sathish Arul

INSULATION MATERIALS USED IN MOTORS ARE INSULATION MATERIAL TYPE SIZE XXX PAPER B CLASS 5, 7, 10 FILM PAPER E CLASS 5, 7, 10 NOMEX PAPER F CLASS 5, 7, 10 FILM PAPER NOMEX PAPER XXX PAPER

COPPER BUSBAR STANDARD SIZE OF BUSBAR AVAILABLE IN MARKET WIDTH (mm) 20 25 30 35 40 50 75 100 120 150 180 200 THICKNESS (mm) 3 6 10 12 CURRENT CAPACITY OF A BUSBAR BB = W * T * CCC where, CCC = Current carrying capacity W = Width T= Thickness LOCATION AL CU NORMAL (INDIA)           0.8 1.2 PURE e (GULF) 1 1.6 WEIGHT OF BUSBAR (Kg/m)  BB = W * T * WD Where, W = Width T = Thickness WD = Weight density For, Aluminium 0.0027 Copper 0.0089 PRIZE ESTIMATION OF BUSBAR BB = W * T * WD * L * X where, W = Width T = Thickness WD = Weight density L = Length in meter X = rate / Kg For, Aluminium 400 may be vary Copper 1200 m...

MCB  (1,2,3&4pole)                                         MCB SELECTION CHART Cable size should be selected based on MCB rating MCB   (AMPERE) WIRE SIZE (sq mm) PHASE NEUTRAL EARTH 6 2.5 1.5                           SAME AS PHASE WIRE 10 2.5 1.5 16 4 2.5 20 4 2.5 25 6 4 30 6 4 40 10 6 50 10 6 63 16 8

 CABLE SELECTION OF CABLE SIZE BASED ON AMPERE Upto 30 A divide the ampere value by 5 Inbetween 30 A and 125 A divide the ampere value by 4 Above 125 A divide the ampere value by 2 Then select the available/standard cable size nearest to the resultant value. AVAILABLE CABLE SIZE AND AMPERE RATING SIZE AMPERE 0.5 2.5 1 5 1.5 7.5 2 10 2.5 12.5 4 20 6 30 10 40 16 60 25 80 35 140 70 280 95 380 120 480 150 300 185 370 200 400 240 480 300 600 630 1260 800 1600 1000 2000 PROPER METHOD FOR SE...

BASIC BLOCK DIAGRAM OF RO SYSTEM REVERSE OSMOSIS PROCESS RO is a form of filtration using osmosis in reverse. Water passes from a more concentrated solution to a less concentrated solution. To accomplish this a force or pressure must be applied. RO requires 1 psi of pressure for every 100 ppm of TDS. RO is used to remove dissolved solids from water but it can also improve taste, odor & colour of water. RO membranes have the capability to remove particles as small as ions i.e. magnesium ions or sodium ions. RO membrane will reject most compounds based largely on size. Dissolved ions, such as salts, carry an electric charge and will also be rejected by membrane. The major component present in the RO System are: Spun  Filter Anti-Scalant Balls Pre Carbon  Sediment Membrane  Post Carbon UV chamber Alkaline SMPS Auto Flush Timer Diverter Valve Low Pressure Switch Solenoid Valve Booster Pump Flow Restrictor Float Switch with Ball Tank Tap How To Measure TDS TDS in water can...

In this topic we are going to see the equivalent circuit diagram, terminal connector/box, selection of starting capacitor, selection of running capacitor, some standards available in market, and spare parts. CEILING FAN BELT DRIVEN COMPRESSOR PUMP CENTRIFUGAL REGENERATIVE PUMP

CONTROL CIRCUIT FOR DOL STARTER CONTROL CIRCUIT FOR STAR DELTA STARTER  

UPS ONLINE   Static switch is used Operates in 0 ms or micro second Charging and discharging of batteries is done simultaneously Some standard ratings are 30 kVA / 40 kVA / 75 kVA / 125 kVA  OFFLINE Transfer switch is used Operates in between 4 ms to 10 ms Charging and discharging of batteries is not done simultaneously INVERTER It performs both operation i.e., Rectification & Invertion  Some standard ratings are 2 kVA, 3.5 kVA, & 5 kVA  Terminals are Input (P), Output (P) & Common (N&G) CHARGER It performs only Rectification Available only in online mode     SMPS It performs only Rectification available only in online mode key points: UPS module redundancy  UPS system redundancy

SWITCHGEARS                                                   SOME IMPORTANT ABBREVIATIONS USED IN SWITCHGEARS MCB                    Miniature Circuit Breaker ELCB                   Earth Leakage Circuit Breaker       RCCB                  Residual Current Circuit Breaker       RCBO                  Residual Current Breaker With Overcurrent  MCCB                 Molded Case Circuit Breaker VCB                     Vacuum Circuit Breaker ACB           ...

SQUIRREL CAGE INDUCTION MOTOR                                             TYPES OF MOTOR  AC        SYNCHRONOUS             ASYNCHRONOUS/INDUCTION                                                                                                                                                           ...