【Daily Question】Question from Issue 20151022
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Participation reward: 2 Wealth. Reward for correct answer: 9 wealth. If the secondary circuit of a currently operating current transformer becomes open-circuited, the current transformer will ( ). A. Operate under no-load conditions B. Burn out C. Have its fuse blow. [Production and Management Division] Seeking moderators and technical discussants to join
If the secondary circuit of a current transformer that is in operation becomes open-circuited, the current transformer will (B, burn out). A. Operate under no-load conditions B. Burn out C. The fuse will blow
If the secondary circuit of a running current transformer becomes open-circuited, the current transformer will ( B).
If the secondary circuit of a currently operating current transformer becomes open-circuited, the current transformer will ( C ). A. operate under no-load conditions B. burn out C. cause its fuse to blow
Participation reward: 2 Wealth. Reward for correct answer: 9 wealth. If the secondary circuit of a currently operating current transformer becomes open-circuited, the current transformer will ( B ). A. operate under no-load conditions B. burn out C. have its fuse blow. An open circuit on the secondary side is absolutely not allowed, as once this occurs, the primary side current I1 becomes entirely magnetizing current, resulting in a sudden increase in φm and E2; this leads to excessive saturation of the core, severe heating, and even burning out of the windings ； At the same time, excessive saturation of the magnetic circuit increases the error. When a current transformer is operating normally, its secondary side is approximately short-circuited. If it suddenly becomes open-circuited, the excitation emf changes abruptly from a very small value to a very large one, causing the magnetic flux in the core to exhibit a severely saturated flat-top wave. As a result, the secondary winding generates very high peak voltages when the magnetic flux passes through zero; these voltages can reach several thousand or even tens of thousands of volts, posing a threat to the safety of the personnel as well as to the instruments
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If the secondary circuit of a current transformer that is in operation becomes open-circuited, the current transformer will (b). A. operate under no-load conditions B. burn out C. cause its fuse to blow
This is a question related to electricity; I think the answer is B.
If the secondary circuit of a currently operating current transformer becomes open-circuited, the current transformer will ( ). A. Operate under no-load conditions B. Burn out C. Have its fuse blow B
If the secondary circuit of a running current transformer becomes open-circuited, the current transformer will (B)