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How to read the electricity meter? There are four ways:
The first type: General direct input single-phase and three-phase meters can directly read the number and subtract the last reading to obtain the electricity for this stage The straight in meter has a thicker incoming wire, and upon careful observation, it has not been connected through a transformer.
The second type is a three-phase electricity meter connected through a current transformer connection method. The meter has 10 wires and the current ratio of the connected current transformers should be observed. The nameplate of the current transformer has a number indicating a ratio of 5, such as 100/5150/5. The measured amount of electricity is obtained by multiplying the number read on the meter by the current ratio, and accurately adding transformer loss and line loss.
The third type: How to read the electricity meter?
A single-phase electricity meter measures the amount of three-phase electricity, and the electricity reading method is to directly connect the meter to read the number on the meter multiplied by 3. If the meter is connected through a transformer, it needs to read the meter number multiplied by the transformer current multiple and then multiplied by 3
The fourth type: The smart meter only has one LCD screen. If it is single-phase, it will directly display the total and remaining power, and the reading can be done directly. If it is an IC card meter, only the LED display is a single graphics card meter There will be a small red dot on the electricity meter. The red dot will jump to the total usage area, which is total usage, and jump to the remaining area, which is remaining. Dual graphics card watch, can be read from above or below The direct reading of the three-phase prepaid meter is direct, and the reading of the transformer meter is multiplied by the transformer multiplier.