Problems with motor voltage and current
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This post was last edited by sdscj0122 on 2020-9-29 at 19:06. The motor maintains its rated output within a range of 【±10%】 of the rated voltage, allowing for long-term operation. During operation, the voltage imbalance between phases must not exceed 【±5%】, and the current imbalance among the three phases must also not exceed 【±5%】; the current in the phase with the highest value must not exceed the rated value. As mentioned above, does anyone know the origin of this phrase? ? ?
Such a description seems to come from an electrical engineering textbook
(Thermal Power Vocational Skill Assessment Exam) Questions
A question bank also needs to have a basis, right? There has to be some actual standard document source, right?
There has to be a basis for creating teaching materials as well – one can’t make things up arbitrarily; P
It can be found on Baidu, but there is no specific source.
If you find a tutorial, study it carefully* and you’ll understand;P
So, one regrets not having enough knowledge when it’s needed. One still needs to study professional knowledge carefully; otherwise, one won’t understand the basics:L
Well said: One regrets not having enough books when they’re needed.
Operating Procedures for Utility Motors in Power Plants (Ministry of Water Resources and Electric Power of the People’s Republic of China)