( No x Watt x Demand factor ) / Volt
-No = no load
-Watt = power of unit
- Demand factor = power factor
- Volt = Voltage
No or no load calculate
Star Connected motor: ម៉ូទ័រតជាផ្កាយ 660V
No load current at star connection = 0.1 x Motor Full load current.
I(No-load) = 10% x I(FLA)
Delta connected Motor: ម៉ូទ័រតជាត្រីកោណ 380V
It means the three-phase motor will be connected in star connection (one end short and another end supply). The motor will take 10% of the full load current. therefore
It means the motor will be connected as the delta. (all winding series-connected and the junction will be connected to the power supply).
No load current at delta connection = 0.3 x Motor Full load current.
I(No-load) = 30% x I(FLA)
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