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Orion Current Sensor
Orion BMS Current Sensors (±200A · 500A · 750A · 1000A)
Dual-range Hall-effect sensors purpose-tuned for Orion BMS. Size for your peak current, keep accuracy at low current, and give the BMS the data it needs for safe, precise control.
- Dual-range package
- High accuracy at low current
- Bidirectional (charge/discharge)
- CAN-friendly telemetry via Orion
Why the current sensor matters
While technically optional, the current sensor unlocks most of Orion’s intelligence. Without it, Orion cannot compute SOC, SOH, internal resistance, CCL/DCL, or detect weak cells and over-current events. Accurate current data drives protection, range prediction, and charge control.
How to size the sensor
Pick the smallest sensor that safely covers peaks
- Target: choose a rating above your highest expected transient, not just continuous.
- Example: 275 A peak → pick 500 A (headroom for spikes).
- Example: 190 A peak → pick 500 A (200 A is borderline for transients).
Smaller ranges improve low-current accuracy, but a little oversize is safer than clipping.
Dual-range = accuracy + redundancy
Each part includes two sensing ranges inside one package: a smaller internal range for finer low-current resolution and a larger range for peaks. Orion uses both to improve fidelity and robustness.
Available ranges
| Nominal Range (bidirectional) | Recommended Use | Notes |
|---|---|---|
| ±200 A | Light EV, robotics, small ESS | Best small-current resolution; ensure headroom for spikes. |
| ±500 A | General purpose traction / mid ESS | Common choice when peaks sit 200–350 A. |
| ±750 A | High-demand traction / larger ESS | For systems with frequent 400–600 A bursts. |
| ±1000 A | Heavy traction / industrial | Use when peaks approach 800–900 A. |
Wiring & installation notes
- Orientation: follow the arrow/marking so positive current (discharge) matches Orion’s sign convention.
- Conductor fit: route the main conductor centrally through the aperture; avoid edge contact.
- EMI hygiene: keep HV busbars and high-dI/dt conductors away from sense leads; twist/route per Orion manual.
- Thermal: sensor is non-contact; maintain clearance from hot components and provide strain relief for leads.
CAD Downloads
FAQs
What happens if I undersize the sensor?
Clipped peaks reduce accuracy and can compromise over-current protection and SOC/limit calculations. Always allow headroom.
Does Orion require a current sensor?
Orion can run without one, but most features (SOC, SOH, IR, CCL/DCL, weak-cell detection) depend on accurate current.
Are these sensors bidirectional?
Yes—specified ranges are ±, covering both charge and discharge current.
Couldn't load pickup availability
Pickup available at EVolve Electrics Office
Usually ready in 24 hoursPairs well with
Orion Current Sensor
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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