A project has 6 280KW motors; let’s discuss the advantages and disadvantages of using high-voltage or low-voltage starting!
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A project involves 6 280KW motors as well as other low-power motors. Let’s discuss whether it is better to use high-voltage or low-voltage starting methods, along with their advantages and disadvantages: Option 1 is to use high-voltage motors for the 6 large motors, employing 10KV high-voltage starting； Option two is to use low-voltage starting for all motors, with soft starters to reduce the voltage during startup. This post was last edited by mu99899 on 2008-2-19 09:08.]
Check the capacity of the transformer in the plant; if it is large, a low-voltage soft start is used, while if the capacity is smaller, a high-voltage start is employed.
One jack~~~~~~~ to lift~
From a practical standpoint, low-pressure operations and maintenance are simpler.
This is a good question; looking forward to a good answer
From an economic usage perspective, high pressure is more economical. However, the initial investment is high. Low voltage, excessive current, and low stability over long-term use compared to high voltage.
If there are only two options and one must be chosen, it is recommended to go with Option 1. The first reason is that the investment required for Option 2 is substantial, and the second reason is to leave room for future expansion.
I think the first option is better
I think the first option is better
6 units of 280KW each can be controlled by one soft starter plus one small PLC. This way, a lot of costs are saved.
Option one is recommended, as it results in lower current, a reduced failure rate of the equipment, easier maintenance, and lower operating costs.
Could low-voltage variable-frequency starting be considered?
Option 1: For capacities greater than 250 KW, use high voltage