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Electrical power problems: power, current, voltage The power of the equipment is 6.2kw/380v, which of the following electric boxes is suitable, and please explain how to calculate: 15A / 380V, 30A / 380V, 60A / 380V (don't talk nonsense. You can't solve such a simple problem) Not much,
6.2kw/380v, working current is 16.3a, so 15A is definitely not good
30A / 380 is OK. 60A is OK. It's a bit wasteful
Excuse me, the power of a machine is 30 kW, how many kilowatts of electricity does it need to work for one hour?
The power of the machine is 30 kW, which is just the nominal value on the nameplate. The power consumption is related to the actual work done by the machine. It is not easy to simply calculate 30 kW * 1 hour = 30 degrees. To measure accurately, it is recommended to install a watt hour meter
Is the power consumption of single-phase electrical appliances the same as that of three-phase electrical appliances? If it is calculated by 1000W, it is one hour for single-phase electrical appliances, then how many degrees for three-phase electrical appliances?
General single-phase electrical rated voltage is 220 V, as long as the three-phase four wire system phase voltage is 220 V, then the power consumption is to sample
The electric energy meter can be used to measure the hourly electricity consumption of electrical appliances. Xiao Li wants to know the hourly electricity consumption of the hair dryer used by his hairdresser. He only knows that his rated voltage is 220 V, and there is no other data. Please use the general household electric energy meter [the data on the nameplate is as follows: 220 V 1325 kW · h 2.5 (5) a 50 Hz
A simple method is designed to help Xiao Li calculate the hourly power consumption of this hair dryer
Fast, fast, good answers plus points
3000r / kW · h is 1kW · h for 3000 turns
So you count how many turns in an hour (we use n)
Using N / 3000 is the power consumption of hair dryer per hour
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