how we can calculate cable size of 230v,1 hp single phase motor ? panel to motor distance is 25 meter
4 16507In induction machine when the load increase the current will increase .why? what is the relation ship between the sleep and current drown by stater?
1 2084can we run a motor rated 50Hz,415vac,1440RPM At higher speed then rated on name plate with the help of VFD /drive on long term basis.wheater it will effect the motor life
3 5962what is the physical connection of a analog i/p to a analog i/p module (ab plc)and through a analog o/p module(ab plc) to a analog o/p . and how all the process control by scada
14231) name the communication cable and how it is communicate in between plc to modbus , plc with hmi? 2)name of the communication cables?
1 3516what is the per unit cost of generation of electricity at thermal,hydro,desael,solar,gas power plant
1 3643Post New Electrical Engineering Questions
we have require a Motor (1500kW, 6.6kV, 50Hz) which shall operate at 1500rpm during 30min and after it shall run on 500rpm during 15min. The same cycle shall be repetitive during the whole working days. Which method is best and economic to achieve such type of task. VFD, VVFD, Pole changing motor etc.
when the time of backcharging the transformer three phases only enough or three phase with neutral is must.from these which one is the best one.
For RCD (Residual current device) Icu is defined. How i can find Ics for them?
How to test IR testing & magnetic balance test
What is shutdown of electrical sub station?
what is RFCT and Insulgard Relay & It's function?
In TNC switch, is there any 1NO+1NC block ? and if we move over closing position, is ther any affect on trip position or vice versa?
Please explain the following and how these are working with PLC unit 1.I/O Module 2.I/O Device 3.Adaptor Card 4.Ribbon Adaptor 5.RS 485-FC
how does a shunt reactor maintains the bus voltage???
How can claculate to attain the desired PF in the line ( HOW Much KVAR is required ) Pls Give the formula? Equate Petrochemical 0 1 how to calculate sizing of NGTR (Transformer rating,Loading resistor value and Current rating of resistor) and what is the X/R ratio. Details : 11kV,Capacitance 1.73532 micro farads,40kA for 1sec. 0 1 What will happened. if we feed 3phase supplay to the stater with out insert the rotor. How much current will flow through the stater winnding? Equate Petrochemical 0 1 What is required of exietation to the alternater. 0 1 why star point of HT motor not earthed? Equate Petrochemical 0 1 Why we are getting low voltage in star connection? Equate Petrochemical 0 2 What's ND relay & it's functions? Equate Petrochemical 0 2 How instantanious short circuit current is calculated? its formula? Equate Petrochemical 0 2 What is servo Motor? What's the advantages of this motor over Induction motor? Equate Petrochemical 0 2 What is core CT & it's function? Equate Petrochemical 0 3 what is meant by star/delta voltages as 440/220 in a 3 phase induction motor, and why it should be connected on STAR IN 3 PHASE SUPPLY L & T 0 4 What is required of exietation to the alternater. KNB 1 23 what is the design voltage for 6.6KV 2000 KVAR HT capacitor? Consultancy 0 3 Pls explain about vfd control?Where it is used, Give some example? siemens 1 22 Please explain me abt PQ diagaram in the power sector. 0 9
Please send 110 kv sb station full single line drawing(sld)
what are the applications of PLC?
What is time invariant system?
Why control of DC motor is simpler?
HOW TO DESIGN THE body EARTH cable(Copper Conductor) size for 60KVA UPS?
