Can any one tell me that how to convert 200 KVA to KW ?
Not without knowing the pf or Power Factor. kVA is called that rather than kW because kW is real power, the actual power consumed by the load. However, a motor is not a resistive load. The current is out of phase with the voltage, so in order for the motor to use a given number of kW, it draws more current than a simple calculation that ignores phase would indicate. But the breakers and wires must be rated for the current drawn, not the power used. So a motor rated at 200kVA must have the wires and breakers supplying it rated as if it were using 200kW. But it is -not- 200kW. What exactly are you trying to do? You only need to know the kW if you are calculating the power bill. You need kVA to calculate transformers, wires, and breakers supplying it. No offense meant, but if you are a manufacturer of chillers and panel air conditioners, you should be hiring an electrical engineer, not relying on a bunch of unknowns on Yahoo Answers.