A blocked rotor test is conducted on an induction motor. It is also known as short-circuit test (because it is the mechanical analogy of a transformer short-circuit test), locked rotor test or stalled torque test. From this test, short-circuit current at normal voltage, power factor on short circuit, total leakage reactance, and starting torque of the motor can be found. It is very important to know a motor's starting torque since if it is not enough to overcome the initial friction of its intended load then it will remain stationary while drawing an excessive current and rapidly overheat. The test may be conducted at lower voltage because at the normal voltage the current through the windings would be high enough to rapidly overheat and damage them. The test may still be conducted at full
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| - Blocked rotor test (en)
- 馬達堵轉測試 (zh)
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| - 馬達堵轉（zhuàn）測試（英語：blocked rotor test）又稱短路測試（short circuit test）、轉（zhuàn）子鎖定測試（locked rotor test）或失速轉矩測試（stalled torque test），是感應馬達的測試，可以找出下的短路電流、短路時的功率因素、馬達的漏電感（漏感抗）以及啟動轉矩等資訊；此測試會在低電壓時進行，因為若輸入電壓為額定電壓，通過定子繞組的電流會很大，會使繞組過熱造成損壞。 對於繞線式感應馬達，因其啟動轉矩可以依需要調整，不會進行堵轉轉子的轉矩測試；而對於鼠籠式感應馬達，會進行堵轉轉子的電流測試。 (zh)
- A blocked rotor test is conducted on an induction motor. It is also known as short-circuit test (because it is the mechanical analogy of a transformer short-circuit test), locked rotor test or stalled torque test. From this test, short-circuit current at normal voltage, power factor on short circuit, total leakage reactance, and starting torque of the motor can be found. It is very important to know a motor's starting torque since if it is not enough to overcome the initial friction of its intended load then it will remain stationary while drawing an excessive current and rapidly overheat. The test may be conducted at lower voltage because at the normal voltage the current through the windings would be high enough to rapidly overheat and damage them. The test may still be conducted at full (en)
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| - A blocked rotor test is conducted on an induction motor. It is also known as short-circuit test (because it is the mechanical analogy of a transformer short-circuit test), locked rotor test or stalled torque test. From this test, short-circuit current at normal voltage, power factor on short circuit, total leakage reactance, and starting torque of the motor can be found. It is very important to know a motor's starting torque since if it is not enough to overcome the initial friction of its intended load then it will remain stationary while drawing an excessive current and rapidly overheat. The test may be conducted at lower voltage because at the normal voltage the current through the windings would be high enough to rapidly overheat and damage them. The test may still be conducted at full voltage if it is brief enough to avoid overheating the windings or overloading the starting circuits, but requires much more care to be taken while performing the test. The blocked rotor torque test is less significant on wound-rotor motors because the starting torque can be varied as desired although it may still be used to characterise the motor. (en)
- 馬達堵轉（zhuàn）測試（英語：blocked rotor test）又稱短路測試（short circuit test）、轉（zhuàn）子鎖定測試（locked rotor test）或失速轉矩測試（stalled torque test），是感應馬達的測試，可以找出下的短路電流、短路時的功率因素、馬達的漏電感（漏感抗）以及啟動轉矩等資訊；此測試會在低電壓時進行，因為若輸入電壓為額定電壓，通過定子繞組的電流會很大，會使繞組過熱造成損壞。 對於繞線式感應馬達，因其啟動轉矩可以依需要調整，不會進行堵轉轉子的轉矩測試；而對於鼠籠式感應馬達，會進行堵轉轉子的電流測試。 (zh)
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