Wednesday, December 16, 2020

របៀបគណនាឌីសង់ទ័រ , របៀបរកអំពែឌីសង់ទ័រ , Amp to MCB , Amp to MCCB

( 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)

ប្រសិនមានចំងាល់អាចឆាតតាមTelegram បាន៖ 093501353 

មានទទួលម៉ៅការប្រព័ន្ធទឹក ភ្លើង  ម៉ាស៊ីនត្រជាក់ និង ប្រព័ន្ធELV 

Tel: 093501353 , 078428143 

https://www.highperformancecpmgate.com/jwhd6ifwrz?key=50f3ab6590d06dfe2b94eea6326e3a08

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