This product is the TFY-CSB-ZM series current sensor manufactured by Ningbo Taifengyuan Electric. It is a high-precision current measurement module designed based on magnetic sensing and closed-loop operating principles, suitable for scenarios such as DC electric energy meters, charging piles and charging guns. It can accurately measure various forms of current waveforms including alternating current, direct current and pulse current. Its rated primary current reaches ±300A with a maximum accuracy of 0.2%. Featuring fast response speed, a bandwidth of 100kHz, an operating temperature range from -40℃ to 85℃, it boasts strong anti-interference capability as well as outstanding stability and reliability.
Definition | Symbol | Value | Unit |
Primary Rated Current | Ipn | 300, 500 | A |
Secondary Rated Voltage | Vsn | 1 | V |
Maximum Primary Current | Ip | 1.2 × Ipn | A |
Secondary Output Voltage | Vo | 1 × (1/Ipn) | V |
Load Resistance | RL | ≥10 | kΩ |
Supply Voltage | Vc | ±12V (±5%) | V |
Quiescent Current Consumption (@±12V, I=0A) | IC | ≤15 | mA |
Maximum Current Consumption (@±12V, I=Ip) | Im | ≤160 | mA |
Accuracy (@0.01Ipn–0.05Ipn @25°C) | XG | 0.5 | % |
Accuracy (@0.05Ipn–Ipn @25°C) | XG | 0.2 | % |
Zero Offset Voltage (I=0A, @25°C) | VOE | ≤1 | mV |
Zero Temperature Drift (I=0A, @-40~85°C) | VOT | <0.1 | mV/C |
Hysteresis Offset Voltage (@I=0A, after 1×IPN) | VOH | ≤±1 | mV |
Response Time (@90% Ipn) | Tra | ≤5 | μs |
Bandwidth (@10% Ipn, -3dB) | BW | DC-20 | kHz |
Constant Magnetic Field Influence (@200mT) | δ | ≤2 | % |
Power Frequency Magnetic Field Influence (400A/m) | δ | ≤1 | % |
