Transformer Dyn11 connection method: high-voltage side triangle, low-voltage side star-shaped with neutral line, high voltage and low voltage have a 30-degree phase differenceTransformer Yyn0 connection method: high-voltage side star, low-voltage side star with neutral line, there is no phase differ
There are many ways to operate the neutral point of the power system: ungrounded, grounded through a resistor, grounded through an arc suppression coil, or directly grounded. There are three main neutral point grounding methods currently used in my country's power system: ungrounded, arc suppres
There are different opinions on how many times the motor's starting current is the rated current, and many of them are based on specific circumstances. For example, more than ten times, 6 to 8 times, 5 to 8 times, 5 to 7 times, etc.At the moment when the motor starts (that is, the initial moment
A UPS battery (uninterruptible power supply battery) is a device used to provide a temporary power supply, often used to protect computers, network equipment and other critical equipment during power outages or power fluctuations. It can store electrical energy and automatically convert to backup po
At present, the common grounding classifications are as follows: repeated grounding, protective grounding, working grounding, lightning protection grounding, shielding grounding, and anti-static grounding.1 Repeat groundingRepeated grounding: In a system with the neutral point directly grounded, a m
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