📝 Description
Used product.
Original LEM HAS 400-S/SP50 current transducer, designed for the electronic measurement of DC, AC and pulsed currents, with galvanic isolation between the primary and secondary circuits.
The device uses open-loop Hall effect technology. The conductor to be measured passes through the sensor aperture, where the current is detected and converted into an analogue voltage signal proportional to the measured value.
This component is intended for integration into power electronics equipment, inverters, converters, and industrial control and monitoring systems.
The following identification markings are printed on the housing:
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Brand: LEM
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Model: HAS 400-S/SP50
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Visible code: 79281
⚙️ Main Features
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Brand: LEM
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Model: HAS 400-S/SP50
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Additional code: 79281
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Type: Electronic current transducer
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Technology: Open-loop Hall effect
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Rated primary current of the standard HAS 400-S model: 400 A RMS
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Measurement range of the standard model: ±900 A
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Output signal of the standard model: Instantaneous analogue voltage ±4 V
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Power supply of the standard model: ±15 V DC
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Measurable current types: AC, DC and pulsed
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Isolation: Galvanic isolation between primary and secondary circuits
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Installation: Panel mounting
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Connection: Multi-pin connector
Note: The electrical values listed above refer to the standard HAS 400-S model. The SP50 variant must be checked against its specific documentation before these values can be considered definitive.
🔧 Main Functions
- Electronic current measurement.
- Detection of AC, DC and pulsed currents.
- Conversion of primary current into a proportional analogue signal.
- Galvanic isolation between the power circuit and the measurement circuit.
- Signal transmission to control, regulation and monitoring systems.
🏭 Applications
- Inverters and power converters.
- Electric drives.
- Industrial power supplies.
- Energy conversion systems.
- Uninterruptible power supply (UPS) units.
- Current control and measurement equipment.
🔌 Compatibility
Suitable as a replacement part in equipment designed for the LEM HAS 400-S/SP50 model.
Before purchasing and installation, the following must be checked:
- Exact model and variant.
- Supply voltage.
- Required output signal.
- Connector pinout.
- Dimensions and mounting arrangement.
- Electrical specifications required by the equipment.
Compatibility with a specific inverter cannot be guaranteed without checking the original spare part code.
⭐ Advantages
- AC and DC current measurement.
- Galvanic isolation.
- Hall effect technology, with no direct electrical contact with the primary circuit.
- Compact size.
- Suitable for industrial systems and power electronics applications.
📦 Product Condition
Used product, with normal superficial signs of use and handling, as shown in the photographs.
Operation has not been instrumentally tested. An electrical check is recommended before installation.
📋 Sale Includes
- No. 1 LEM HAS 400-S/SP50 current transducer.
Cables, power supplies and other accessories not shown in the photographs are not included.
Summary
LEM HAS 400-S/SP50 current transducer, code 79281, for measuring AC, DC and pulsed currents using Hall effect technology. Replacement component intended for compatible industrial applications, inverters and converters.
