How to calculate the electricity consumption in a month, where does the transformer see its multiple

1. Calculate the electricity consumption for a month: the watt-hour meter.

The current month's reading, minus the previous month's reading, and multiply it by the multiple of the transformer is the electricity consumption of the current month;

2. Multiples of transformers:

1), can be nameplate.

See, such as current transformers.

If the conversion ratio is 1000 5A (that is, when the primary side current is 1000A, the secondary side current is 5A), then its multiple is 200.

2) It can also be directly from the system voltage level.

See, for example, 10kV systems, voltage transformers.

The multiplier is (10000; 35kV system, voltage transformer multiple (35000;

Instrument transformer (instrument

Transformer), also known as instrument transformer, is a general term for current transformer and voltage transformer. It can turn high voltage into low voltage and high current into small current for measurement or protection system. Its functions are main.

It is to convert high voltage or high current into standard low voltage (100V) or standard small current (5A or 1A, both refer to the rated value) in proportion to realize the standardization and small of measuring instruments, protection equipment and automatic control equipment.

Typed. At the same time, the transformer can also be used to isolate the high-voltage system to ensure the safety of people and equipment.

The multiplier of the transformer can be found from the nameplate of the transformer (** 5a), for example 100 5a multiplier is 20, 500 5a multiplier is 100.

The electricity consumption in one month is the multiplier of (the meter reading of the current month and the meter reading of the previous month).

It can be seen from the nameplate of the transformer that if the conversion ratio of the current transformer is 1000 5A (that is, when the primary side current is 1000A, the secondary side current is 5A), then its multiple is 200. The voltage transformer multiple can be directly seen from the system voltage level, for example, in the 10kV system, the voltage transformer multiple is (10000; 35kV system, voltage transformer multiple (35000; And so on. If your metering current transformer conversion ratio is 1000 5A and the voltage is 10kV system, if your watt-hour meter calculates a reading of 10 kWh this month, it will be converted to an actual electricity consumption of 10*200*100 200000 kWh.

The current month's reading of the watt-hour meter minus the previous month's reading and multiplied by the multiple of the transformer is the current month's electricity consumption. The multiples of the transformer can be found on the transformer.

The current ratio indicated on the name plate of the transformer is.

Calculating a month's electricity consumption requires the corresponding known data?

200 5, which is 40 times the transformer, and the number of electrical representations multiplied by forty is the actual amount of electricity.

For example, if the table is 131 40 5240, the actual electricity is 5240 kWh.