Simple prepaid metering means paying for electricity, gas or water before use. Consumers purchase a letter of credit and then use resources until the letter of credit expires. The concept of prepaid metering is nothing new. It was first introduced in the form of coin-operated gas meters before World War II. After the introduction of electronic or digital transfer of credit in the 1980s,...
Due to the difference in equipment and power usage, the loss rate during the use of electrical energy is not very low, but it is not easy to avoid, and the electrical energy consumption of low-voltage power distribution terminals is large. In order to strengthen the measurement, evaluation and management of terminal energy, and to facilitate the use and transformation of users, a miniature...
One. Different characteristics
1. Single-phase electric energy meter: du guide rail type installation, the bottom is connected to the zhi line, and the miniature circuit breaker is perfectly matched. The intuitive and easy-to-read mechanical display reduces the risk of data loss due to accidental power failure. No external power supply is required. Wide operating temperature range.
2. Two-phase...
1. It has a variety of anti-theft functions, low starting current, no submergence, wide load, low power consumption, straight error curve, and good stability during long-term operation.
2 Beautiful appearance, small size, light weight and easy installation.
3 High accuracy: Full electronic design, built-in imported special use chip, accuracy is not affected by frequency, temperature, voltage,...
The calibrated current refers to the continuous operation of the electrical equipment for a long time, and the current when the stable temperature reaches the maximum allowable temperature becomes the calibrated current of the equipment.
Rated current refers to the current when the electrical equipment runs at rated power under rated voltage. It can also be defined as the current that...
single phase energy meter is used for active power measurement and measurement: accurate measurement, modularized small volume (18mm), can be easily installed in various terminal distribution boxes. Guide rail installation, bottom wiring, perfect match with miniature circuit breaker. The intuitive and easy-to-read mechanical display reduces the risk of data loss due to an unexpected...
Using large-scale integrated circuits and SMT processing technology to ensure high reliability of the product 2. The power consumption of the energy meter is low, far less than the national standard Voltage circuit: ≤0.7W and 4VA (national standard: ≤2W and 10VA) Current circuit: ≤0.3VA (GB: ≤4.0VA) 3. Strong anti-theft function, the single-phase electronic energy meter produced...
The names of motor meters are well known, and these meters consist of a small motor. Different types of motors are used in these energy meters. Some energy meters use mercury motors, commutator motors, and induction motors. Mercury motor energy meters are only used for DC circuits, induction motor energy meters are only used for AC circuits, and commutator motor energy meters are used for AC...
The basic unit of measurement for electricity is watts. One kilowatt is called a kilowatt. When electricity is supplied with a vacuum of 1000 watts for 1 hour, 1,000 watt-hours (1,000 Wh) are used. One kilowatt hour is equal to one kilowatt hour (kWh). The utility bill usually shows the kWh charge you used.
The meter uses a digital display or turntable. The difference between one month's...
1. Model meaning. The meter model is represented by the arrangement of letters and numbers, the content is as follows:
Category code + Group code + Design serial number + Derived number
1) Category code: D—electric meter
2) Group code: indicates phase line: D—single phase; S—three-phase three-wire active; T—three-phase four-wire active.
Indicated use: A—ampere hour...
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