Dc metering sensor for DC electricity meters
Definition | Symbols | Value | Unit |
Primary rated current | Ipn | 300 | A |
Secondary rated current | Isn | 80 | mA |
Primary maximum current | Ip | 360 | A |
Secondary output current | Is | 80 *（I / Ipn） | mA |
Sampling resistance（±12V @Ip） | Rm | 0~20 | Ω |
Supply voltage | Vc | ±12（±5%） | V |
Static current consumption（±12V @I=0A） | IC | ≤10 | mA |
Maxim current consumption（±12V @I=Ip） | Im | ≤120 | mA |
Accuracy（@0.01Ipn~0.05Ipn @25℃） | XG | 0.5 | % |
Accuracy（@0.05Ipn~Ipn @25℃） | XG | 0.2 | % |
Static zero output（@I=0A, @25℃） | IOE | ＜5 | μA |
Temperature effect on zero（Ip=0A，@-40~85℃） | VOT | ＜0.1 | mV/℃ |
Hysteresis offset voltage（@I=0A, after 1*IPN） | VOH | ≤±1 | mV |
Response time（@90% Ipn） | Tra | ＜5 | μS |
Bandwidth（@10%Ipn, -3dB） | BW | >100 | kHz |
Constant magnetic field influence quantity（@200mT） | δ | ≤2 | ％ |
Power frequency magnetic field influence quantity（400A/m） | δ | ≤1 | % |
