Hall Sensor
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Hall effect current sensors from YADA Electronics — a Guangdong-based manufacturer (Beijing Stock Exchange: 920556) building isolated AC and DC current transducers for UPS systems, inverters, battery storage and data-centre power monitoring. This category holds 9 models covering 50 A to ±2000 A with ±0.5% to ±1.0% accuracy, ≤10 μs response and AC 3 kV isolation.
Choosing By Output, Not Just By Current
Two sensors with the same current range are not interchangeable if their outputs differ. A ±4 V bipolar output suits a bidirectional battery circuit; a 0–5 V unipolar output suits a one-way load; a 40 mA current output survives long cable runs that a voltage output would not. Match the output to the receiving input before comparing anything else.
| Model | Measurement Range | Output | Best Suited To |
|---|---|---|---|
| YDKF64-HSD-2000 | ±2000 A | Isolated analogue | Battery systems, solar inverters, EV charging, high-current power electronics. |
| YDBF40-HSD Series | 200 A – 1500 A | 0–±4 V, ±0.5% | Inverters, UPS, energy storage, wide-temperature industrial monitoring. |
| Split-core transducer | ±300 A / ±1000 A | ±4 V, ±1.0% | Retrofit AC/DC monitoring where the conductor cannot be disconnected. |
| YDG-HSD-5 | 0–600 A | 0–4 V, ±12 V supply | Heavy-duty UPS and inverter installations. |
| YDG-HSD-6 | 0–300 A | 0–3 V (configurable) | Industrial power systems, UPS, inverters. |
| YDG-HSD-3 | 0–100 A | 0–5 V | UPS, inverters, data-centre power monitoring. |
| YDG-HSD-2 | 50 A / 100 A | 2.5 V / 5 V | Data-centre and OEM UPS current sensing. |
| YDG-HZD-2A | 250 A | 40 mA, closed-loop, ±0.5% | Precision DC measurement, UL-94 V0 housing required. |
Hall Effect Sensor Technical Specifications
| Parameter | Specification |
|---|---|
| Measurement range | 50 A to ±2000 A depending on model |
| Current type | AC and DC |
| Accuracy | ±0.5% (YDBF40-HSD, YDG-HZD-2A); ±1.0% (split-core) |
| Output options | ±4 V, 0–3 V, 0–4 V, 0–5 V, 2.5 V / 5 V, 40 mA |
| Response time | ≤ 10 μs |
| Isolation | AC 3 kV |
| Power consumption | < 0.5 W |
| Supply | ±12 V DC (YDG-HSD-5) |
| Construction | Split-core (openable) and closed-loop versions |
| Housing | UL-94 V0 (YDG-HZD-2A) |
Typical Applications
- UPS systems — input, output and battery current sensing in the control loop.
- Solar inverters — DC string current where a conventional CT cannot be used.
- Battery energy storage — bidirectional charge / discharge current with ± output.
- EV charging — high-current DC measurement up to ±2000 A.
- Data centres — rack and busway current monitoring with isolated outputs.
How To Select A Hall Effect Current Sensor
- Confirm AC, DC or both. A conventional current transformer cannot read DC — that is the main reason to specify a Hall sensor.
- Set the range from peak current, not nominal, and leave headroom for inrush.
- Decide unipolar or bipolar output. Bidirectional circuits need a ± output; one-way loads do not.
- Match the output to the receiving input — voltage output for short runs, current output (40 mA) for long cable runs.
- Choose split-core for retrofit where the conductor cannot be disconnected; closed-loop where accuracy matters most.
- Check the primary aperture against busbar or cable dimensions.
Frequently Asked Questions
Why use a Hall sensor instead of a current transformer?
A conventional CT only works with alternating current. Hall effect sensors measure DC as well, which is why they are used on battery circuits, PV strings and DC charging.
What does the ≤10 μs response time enable?
It is fast enough to sit inside an inverter or UPS control loop rather than only in a monitoring path, where a slower sensor would destabilise the regulation.
Can a sensor be fitted without disconnecting the circuit?
Yes — the split-core transducers open around the conductor, covering ±300 A and ±1000 A ranges for live retrofit.
What is the difference between open-loop and closed-loop?
Closed-loop designs such as the YDG-HZD-2A use a compensating winding to null the core flux, giving better linearity and accuracy (±0.5%) at higher cost.
Related Product Categories
- Current Transformers — AC-only sensing where DC measurement is not required.
- Current / Voltage Transducers — signal isolation and conversion for monitoring systems.
- DC Energy Meters — DC energy accounting alongside the current measurement.
- Power Meters — panel instruments receiving the transduced signal.
- Power Quality Analyzers — full electrical condition measurement.
Request A Hall Effect Current Sensor Quote
Send the peak current, whether it is AC, DC or bidirectional, the output your input card expects, the cable run length and the busbar or cable dimensions.