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There is a 400 / 5 ammeter, a current transformer 200 / 5 how to connect, in the transformer around a few circles. How to calculate? Thank you!
In a 400 / 5 transformer, two turns of primary wire is equivalent to 200 / 5. The secondary wire can be directly connected with the ammeter. Without calculation, two turns of 200A current is equivalent to 400A, and the secondary wire is 5A. OK
Low voltage distribution cabinet: air switch 3, voltmeter 1, ammeter 3, transfer switch 1, how to connect
Air switch 3, the internal connection is good, no need to change. The voltmeter can be connected to the power supply in parallel. The ammeter has mutual inductor for mutual inductor, and the connection method is described in the table. Without mutual inductor, it can be directly connected to the load side in series
How to connect the wiring of ammeter in distribution cabinet?
For reference:
How to read and calculate the cost of three-phase four wire fee control smart meter? Meter manufacturer: Ningxia longjiningguang meter factory meter model dtzy 1122
The front of the meter is printed with 3x220 / 380V 400 imp / kWh 3x10 (60a) 400 imp / varh
My family is directly from the pole down installed on the meter
Before use, the meter power is:
The total positive active power is 79.35 kwh
82 kwh
Average 33.05 kWh
Valley 6.48 kWh
After use, the meter power is:
Total positive active power: 92.52 kWh
43 kwh
61 kwh
Valley 6.48 kWh
Negative reactive and active power are all zero
How many degrees are used? How to calculate the cost? How to know if the meter is equipped with current transformer?
Your total electricity consumption this month is 13.17kwh, including 4.61kwh in peak period, 8.56kwh in average period and 0kwh in valley period
Electricity charge of this month = peak section electricity quantity * peak period electricity price + average section electricity quantity * average period electricity price (as the electricity price is not unified nationwide, please consult local 95598 for specific price)
Your meter should not be equipped with current transformer, because the rated current of the meter with current transformer is 3 * 1.5 (6) a
If you have any questions, please call local 95598 for consultation
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