Table of Contents
Application
DD862 type single-phase watt-hour meter, that is, an inductance type single-phase AC active energy watt-hour meter, is used for measuring active energy at a single-phase AC power grid of 50Hz or 60Hz. It has many features such as original design, reasonable structure, high overload capability, lower power consumption, long service life, good stability, convenient adjustment and maintenance, etc.
Main Technical Data
1. The watt-hour meter conforms to all technical requirements stipulated in national standard GB/T17215.311-2008 Alternating Current Watt-hour Meters for Active Energy (Classes 0.5, 1 and 2), and total technical requirements for single-phase watt-hour meters (class 2) stipulated in international standard IEC 521.
2. The watt-hour meter can be designed into two kinds: direct connection type and the type of connection through a multi-purpose current transformer or a multi purpose voltage transformer.
3. According to users’ requirements, the special watt-hour meters can be designed, including the watt-hour meter that has a different reference frequency, reference voltage, different current specifications, positive and negative accumulation, and a non-return function
4. Start: under reference voltage, reference frequency, and COSφ=1, when the load current can’t exceed 0.5% of the basic current, the rotor of the watt-hour meter can start and rotate continuously.
5. Creeping: when the current circuit of the watt-hour meter has no current, and the voltage applied to the voltage circuit is 80%~110% of the reference value, the rotary disc of the watt-hour meter rotates not more than 1 circle.
6. Power consumption: under the reference voltage, reference temperature, and reference frequency, the active energy consumption of the watt-hour meter voltage circuit can’t exceed 2W.
7. Dielectric performance: when the watt-hour meter can withstand the impact waveform (standard 1.2/50μs waveform) and the impact voltage of 6kV peak value for 10 times respectively, it won’t be damaged. The circuit-to-earth of the watt-hour meter can withstand a sine waveform of 2kV and 45~65Hz at AC voltage for 1 minute.
Produce Specification
External And Installation Size
