Hall current sensors operate on the Hall Effect—when current flows through a conductor perpendicular to a magnetic field, charge carriers deflect under Lorentz force, generating a voltage (VH) proportional to magnetic flux density.
The formula is:
VH = (RH × I × B) / d
(RH: Hall coefficient; I: Current; B: Magnetic field; d: Material thickness).
This enables non-contact current measurement, eliminating contact loss and high-voltage risks in EVs and smart grids.
Two core technologies dominate:
Open-Loop (e.g., Token TKC Series)
Simple structure, cost-effective (40% savings)
Ideal for industrial drives and UPS
Closed-Loop (e.g., Token TBC Series)
Compensation coils generate counter-magnetic fields to maintain "zero flux"
Accuracy up to 0.1%, temperature drift <±10ppm/°C, critical for EV motor contro
Closed-loop’s anti-interference capability shines in 200kHz SiC switching noise environments. Combined with electromagnetic shielding (Faraday cages), it suppresses >60dB common-mode noise.
✅ Galvanic Isolation: Withstands >3kV between input/outpu
✅ Zero Power Loss: No circuit intrusion, boosting efficiency (e.g., 15% loss reduction in PV inverters
✅ Wide Bandwidth: DC to 100kHz AC, covering motors, leakage detectio
Case Study: Token’s TDC Series magnetic modulation sensors deployed in European wind farms detect ±0.5mA leakage current, cutting O&M losses by 15%.
4. Nanjing Token: China’s Answer to Precision Sensing
With 20 years of innovation, Nanjing Token Electronics (TOKEN) delivers global industrial solutions:
Dual-Technology Portfolio:
TBC Closed-Loop: 0.1% accuracy for EVs and medical devices
TKC Open-Loop: 8000A range for power grids and rail transport
5. Call to Action: Partner with Token
✅ Customization: Voltage (50A~2000A) and packages (PCB/rail/terminal) tailored
✅ Lifecycle Support: EMC pre-tests to field failure analysis
✅ Free Trial: Visit www.token-sensor.com for samples and Renewable Energy Sensing White Paper
✨ Insight: As current sensing enters the microamp era, Token proves Chinese sensors aren’t just following standards—they’re redefining precision.
添加 : NO.80 Feitian Avenue, Lukou Street, Jiangning District, Nanjing City