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- brief introduction
- technical parameter
- Product size
Dd862 type single-phase watt-hour meter, that is, inductance type single-phase AC active energy watt-hour meter, it is used for measuring active energy at 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/T17215.311-2008Alternating 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 multi-purpose current transformer or multi-purpose voltage transformer.
3. According to users requirements, the special watt-hour meters can be designed, including the watt-hour meter that has different reference frequency, reference voltage, different current specifications, positive and negative accumulation and not-return function
4. Start: under reference voltage, reference frequency and COSφ=1, when the load current can't exceed 0.5% of basic current, the rotor of watt-hour meter can start and rotate continuously.
5. Creeping: when current circuit of watt-hour meter has no current, and the voltage applied to voltage circuit is 80%~110% of reference value, the rotary disc of 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 watt-hour meter voltage circuit can't exceed 2W.
7. Dielectric performance: when the watt-hour meter can withstand impact waveform (standard 1.2/50μs waveform) and impact voltage of 6Kv peak value for 10 times respectively, it won't be damaged. Thecircuit-to-earth of watt-hour meter can withstand sine waveform of 2kVand 45~65Hz at AC voltage for 1min.
External And Installation Size