LEM LA100-P 100A Hall Effect Current Transducer Price in Bangladesh

The LEM LA100-P 100A Hall Effect Current Transducer is a high-performance closed-loop current measurement device designed for accurately measuring DC, AC, pulsed, and mixed currents while providing galvanic isolation between the primary power circuit and the secondary measurement circuit. It is designed for applications where reliable electrical current feedback is essential, including motor drives, power supplies, UPS systems, renewable-energy equipment, battery-powered systems, welding power supplies, and industrial electronics.

The LA100-P has a 100A nominal primary RMS current rating and a primary measuring range of 0 to ±150A. Its bidirectional measurement capability allows it to detect current flowing in both directions, making it suitable for applications where current direction can change during operation.

The transducer uses closed-loop Hall-effect technology. This design provides accurate current measurement while keeping the measured high-current circuit electrically isolated from the low-level measurement output. Such galvanic isolation is particularly valuable in power electronics because the measurement circuitry can be protected from the high voltage or high-current primary circuit.

A major advantage of the LA100-P is that the current-carrying conductor passes through the sensor’s primary aperture rather than requiring the measurement circuit to be inserted directly into the high-current path. This provides no insertion losses in the traditional sense of a series current-measurement resistor and allows the sensor to monitor substantial currents without introducing a significant voltage drop into the primary circuit. LEM specifies an aperture of approximately 12.7 × 7 mm for the primary conductor.

The sensor provides a 50mA nominal secondary signal at the 100A nominal primary current, with a 1:2000 turns ratio for the standard LA100-P version. The secondary current can be converted into a voltage using an appropriately selected measuring resistor, allowing the sensor to interface with analog measurement circuits, control systems, ADCs, oscilloscopes, and power-electronics controllers.

The LA100-P requires an external bipolar supply of ±12V to ±15V, making it different from many simple single-supply Hall-effect modules commonly used with microcontrollers. The required supply arrangement should therefore be considered when designing the measurement circuit.

With a specified accuracy of approximately ±0.45% and linearity error below 0.15%, the LA100-P is intended for applications where better measurement performance is required than basic low-cost current sensors can provide.

The device also offers a wide frequency bandwidth extending from DC to approximately 200kHz, making it suitable for measuring not only steady DC currents but also rapidly changing currents in switching and power-electronics applications. Its typical response time to 90% of the final output is less than 1µs under the specified test conditions.

The LEM LA100-P is therefore well suited to professional electronics development, laboratory instrumentation, industrial control, motor-drive systems, renewable-energy equipment, battery systems, and power-conversion applications where accurate isolated current feedback is required.

What is a Hall Effect Current Transducer?

A Hall-effect current transducer measures current by detecting the magnetic field generated by current flowing through a conductor.

In a closed-loop Hall-effect transducer such as the LA100-P, the sensor detects the magnetic field generated by the primary current and uses feedback circuitry to generate a proportional secondary current. The secondary output provides an electrically isolated representation of the primary current.

This allows the measurement electronics to monitor high-current circuits without being directly electrically connected to the high-current conductor.

Key Features of LEM LA100-P 100A Hall Effect Current Transducer

• 100A nominal primary current
• ±150A primary measuring range
• Closed-loop compensated Hall-effect technology
• Measures DC current
• Measures AC current
• Measures pulsed current
• Measures mixed AC/DC current
• Galvanic isolation between primary and secondary circuits
• ±0.45% accuracy
• Excellent linearity
• Low temperature drift
• Wide DC to 200kHz bandwidth
• Fast response time
• No significant insertion loss
• High immunity to external interference
• Current overload capability
• PCB mounting
• Compact insulated housing
• Suitable for industrial power electronics

Technical Specifications

• Product Type: Current Transducer
• Manufacturer: LEM
• Model: LA100-P
• Technology: Closed-Loop Hall Effect
• Primary Nominal RMS Current: 100A
• Primary Measuring Range: 0 to ±150A
• Secondary Nominal RMS Current: 50mA
• Conversion / Turns Ratio: 1:2000
• Supply Voltage: ±12V to ±15V
• Accuracy: ±0.45% at 25°C and ±15V
• Linearity Error: Less than ±0.15%
• Frequency Bandwidth: DC to 200kHz
• Response Time: Less than 1µs to 90% of final output
• Operating Temperature: −40°C to +85°C
• Mounting: PCB / Through-Hole
• Primary Aperture: Approximately 12.7 × 7mm
• Primary Signal: AC + DC
• Electrical Isolation: Galvanic isolation
• Weight: Approximately 18g

These specifications are for the standard LA100-P version. LEM also produces related variants such as LA100-P/SP13 with different conversion ratios and measurement ranges, so the exact model number should be checked before replacement or circuit design.

Working Principle of LEM LA100-P 100A Hall Effect Current Transducer

When current flows through the primary conductor passing through the LA100-P, it generates a magnetic field around the conductor.

The Hall-effect sensing element detects this magnetic field. The closed-loop compensation circuit then generates a secondary current proportional to the primary current. For the standard LA100-P, the nominal conversion ratio is 1:2000, meaning a 100A primary current corresponds to approximately 50mA of secondary current under the specified conditions.

The secondary current can be passed through a suitable external measuring resistor to generate a voltage signal. This voltage can then be measured by control electronics or instrumentation.

Because the primary and secondary circuits are galvanically isolated, the measurement electronics do not need to be electrically connected to the high-current primary circuit.

Applications of LEM LA100-P 100A Hall Effect Current Transducer

• AC variable-speed drives
• Servo motor drives
• DC motor controllers
• Battery-powered equipment
• Battery management systems
• Uninterruptible power supplies
• Switched-mode power supplies
• DC power supplies
• Renewable-energy systems
• Solar power electronics
• Inverters
• Industrial automation
• Welding power supplies
• Power converters
• Energy-storage systems
• Laboratory measurement equipment
• Power-electronics research
• Motor control systems

LEM specifically lists drives, power supplies, renewable-energy systems, and welding applications among the device’s application areas.

Advantages of LEM LA100-P 100A Hall Effect Current Transducer

• Accurate high-current measurement
• Galvanic isolation
• Bidirectional current measurement
• DC and AC measurement capability
• Wide frequency bandwidth
• Fast response
• Low linearity error
• Low temperature drift
• No conventional series shunt required
• Suitable for high-current power electronics
• Compact PCB-mountable design
• High immunity to external interference
• Suitable for professional measurement systems

Limitations

• Requires a bipolar ±12V to ±15V supply.
• The standard LA100-P has a 50mA secondary output rather than a direct 0–5V or 0–10V voltage output.
• An appropriate measuring resistor and signal-conditioning circuit may be required.
• The primary conductor must fit through the sensor aperture.
• Correct PCB mounting and wiring are essential for reliable measurement.
• The standard model should not be confused with other LA100-P variants that have different conversion ratios or specifications.

Installation / Usage Tips

• Verify that the exact part number is LA100-P before installation.
• Use the specified ±12V to ±15V bipolar supply.
• Ensure the primary conductor fits correctly through the sensor aperture.
• Observe the intended current direction and sensor orientation.
• Use an appropriately rated measuring resistor on the secondary side.
• Keep secondary signal wiring away from strong electromagnetic interference where practical.
• Use appropriate PCB clearance and insulation around the high-current primary path.
• Confirm the polarity and connections of the secondary circuit before powering the sensor.
• Do not exceed the specified current and thermal limits.
• Calibrate the measurement system if high accuracy is required.
• Follow the manufacturer’s datasheet for detailed PCB layout and operating requirements.

Why Choose LEM LA100-P 100A Hall Effect Current Transducer

The LEM LA100-P 100A Hall Effect Current Transducer is an excellent choice for professional current measurement where galvanic isolation, fast response, wide bandwidth, and good accuracy are required.

Its 100A nominal rating, ±150A measuring range, 0.45% accuracy, and DC-to-200kHz bandwidth make it suitable for demanding power-electronics applications. The closed-loop Hall-effect architecture also allows the sensor to measure AC, DC, pulsed, and mixed currents without directly inserting a conventional sensing resistor into the high-current circuit.

Why Buy from Electroxbd

• 100% Quality Tested Products
• Trusted Source for Reliable Electronic Parts
• Fast Delivery Across Bangladesh
• Competitive Pricing
• Quality Electronic Components
• Dedicated Technical Support
• Suitable for Research and Development
• Ideal for Students, Engineers, Researchers and Electronics Professionals

Frequently Asked Questions (FAQ)

What is the LEM LA100-P used for?

It is used for isolated measurement of DC, AC, pulsed, and mixed currents in applications such as motor drives, power supplies, UPS systems, renewable-energy equipment, and power electronics.

What is the current rating of the LEM LA100-P?

The LA100-P has a 100A nominal primary RMS current rating and a primary measuring range of 0 to ±150A.

What supply voltage does the LEM LA100-P require?

The standard LA100-P requires an external ±12V to ±15V DC bipolar supply.

Does the LEM LA100-P provide electrical isolation?

Yes. It provides galvanic isolation between the primary high-current circuit and the secondary measurement circuit, making it suitable for isolated current-feedback applications.

Where can I buy LEM LA100-P 100A Hall Effect Current Transducer in Bangladesh?

You can buy the LEM LA100-P 100A Hall Effect Current Transducer from Electroxbd, a trusted electronics components supplier in Bangladesh.

Common Questions:

Q: What is the price of LEM LA100-P 100A Hall Effect Current Transducer in Bangladesh?

A: The latest price of LEM LA100-P 100A Hall Effect Current Transducer in Bangladesh is 4646 BDT.

Q: Where to buy LEM LA100-P 100A Hall Effect Current Transducer in Bangladesh?

A: You can buy the LEM LA100-P 100A Hall Effect Current Transducer at the best price from ElectroXBD in Bangladesh.