The through-core sensor designed for DC current monitoring is the TFY-CSB-ZL series Tunneling Magnetoresistance (TMR) current sensor manufactured by Ningbo Taifengyuan Electric. This product supports multiple ranges of primary rated current from 100A to 600A, with total accuracy (@25℃) ≤0.5FS, linearity ≤0.2FS and response time ≤5μs. Its bandwidth reaches DC-20kHz (@10%Ipn, -3dB), and the supply voltage is ±12V (±5%). The zero-point temperature drift (I=0A, @-40~85℃) is as low as less than 0.1mV/℃. Featuring stable and reliable performance, it is widely applied in scenarios requiring accurate DC current measurement.
Definition | Symbol | Value | Unit |
Primary Rated Current | Ipn | 100, 200, 300, 400, 500, 600 | A |
Secondary Rated Voltage | Vsn | 4 | V |
Maximum Primary Current | Ip | 1.2 × Ipn | A |
Secondary Output Voltage | Vo | 4.0 × (1/Ipn) | V |
Load Resistance | RL | ≥10 | kΩ |
Supply Voltage | Vc | ±12V (±5%) | V |
Quiescent Current Consumption (@±12V, I=0A) | kc | ≤5 | mA |
Maximum Current Consumption (@±12V, I=p) | Im | ≤145 | mA |
Total Accuracy (@25°C) | XG | ≤0.5 FS | % |
Linearity (@25°C) | EL | ≤0.2 FS | % |
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 |
