Main Specifications and Technical Parameters of Single-Phase 485 On-Off Smart Meter
The technical performance of the single-phase 485 on-off smart meter fully complies with the relevant technical requirements of the GB/T17215-2008 national standard and the GB/T18460-2001 standard for 1 or 2 single-phase electric energy meters.
1. Specifications of electric energy meter:
Note: In the column of rated current, the value before the brackets is the rated current value Ib, and the value in the brackets is the rated maximum current value Imax.
2. Technical parameters:
●Error limit
●Start
Under the condition of rated voltage, rated frequency and power factor of 1, when the load current of the electric energy meter is the value specified in the following table, the electric energy meter should be able to start and continuously measure the electric energy.
● sneak
When there is no current on the current line of the electric energy meter, and the voltage applied to the voltage line is 115% of the rated value, the test of the electric energy meter
The output should not generate more than one pulse.
●Insulation performance
All the lines of the electric energy meter can withstand the pulse voltage with a waveform of 1.2/50μS and a peak value of 6KV between the shells, and are tested 10 times continuously under different polarities without arc discharge or breakdown. The insulation of all lines of the electric energy meter to the ground can withstand an AC voltage of 2 KV with a frequency of 50Hz and a real sinusoidal waveform, and the test lasts for one minute without breakdown.
●Ultimate working voltage: 80～120% Ub
●Power consumption: ≤1W
