HAR - Traction current sensors
The HAR series can be used for the electronic measurement of DC, AC and pulsed currents with galvanic separation between the primary circuit and the secondary circuit.
HAR sensors come up with an instantaneous voltage output of +/- 5 V, a bipolar power supply of +/- 15 V and a bandwidth of DC 10 kHz.
This product series is relying on the open loop hall effect technology. Traction applications are the key target of the HAR current sensors.
HAR – Features and benefits
Main characteristics
- Open Loop transducer using the Hall effect
- Galvanic separation between primary and secondary circuit
- Insulation voltage 7000 V
- Extended measuring range
- Insulating plastic case recognized according to UL 94-V0
Benefits
- Excellent accuracy
- Very good linearity
- Low temperature drift
- Optimized response time
- Wide frequency bandwidth
- No insertion losses
- High immunity to external interference
- Current overload capability
Typical applications
HAR current sensors are manufactured for the railway industry. They can be used either on fixed installations or onboard trains, trams, metros…
Applications for HAR include:
- Single or three phase inverters
- Propulsion and braking choppers
- Propulsion converters
- Auxiliary converters
- Battery chargers
LEM HAR – Download & Technical Characteristic
| Product | Check stock | Document | Primary nominal RMS current | Supply Voltage range | Op. Temperature |
|---|---|---|---|---|---|
| HAR 1000-S | Datasheet 3D | 1000 A | 15 to 15 | -40 to 70 °C |
HAR sensors – ASK FOR SAMPLES / QUOTATIONS
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