LA 150-TP Closed-Loop Hall Effect Current Sensor

LA 150-TP Product Overview

The LA 150-TP is a high-performance closed-loop Hall effect current sensor from LEM (Switzerland). It employs advanced closed-loop compensation technology and is designed for accurate measurement of DC, AC, and pulsed currents. With a rated measurement current of 150A RMS and a maximum capability of 600A peak, this sensor is suitable for demanding applications such as industrial drives, power supplies, renewable energy, and welding equipment.

As a leading global brand in electrical measurement, LEM has decades of technical expertise. Its products are widely used in industry, rail transportation, energy, automation, and automotive sectors, renowned for stable performance and long-term reliability. The LA 150-TP is a prime example of this technological heritage.

LA 150-TP Key Advantages

±0.5% High Accuracy — Maintains high measurement precision over the full range, providing reliable current data for system control.

DC to 150kHz Wide Bandwidth — Extends from DC to 150kHz with excellent high-frequency response. It accurately measures not only conventional power frequencies but also high-frequency applications like inverters and switching power supplies.

500ns Ultra-Fast Response Time — Delivers output within nanoseconds of a current transient, ideal for real-time protection and control applications.

Full Electrical Isolation Between Primary and Secondary Circuits — The closed-loop Hall effect technology provides complete galvanic isolation, ensuring measurement accuracy and reliable safety protection.

-40°C to +85°C Wide Operating Temperature Range — Stable operation in severe northern winters or high-temperature equipment interiors, meeting various harsh working conditions.

No Insertion Loss — Non-contact Hall effect measurement adds no impedance or power loss to the main circuit, improving system efficiency.

Excellent Linearity and Low Temperature Drift — Highly linear output over the full range with minimal temperature effects, ensuring measurement consistency under different environmental conditions.

Strong Immunity to External Interference — Outstanding EMC design ensures stable signal integrity in complex industrial electromagnetic environments, reducing false triggers and measurement errors.

150A Overload Capability — Withstands temporary overcurrent without damage, improving equipment reliability and durability.

LA 150-TP Technical Specifications

LA 150-TP Typical Applications

The LA 150-TP is widely used in the following fields, making it an ideal partner for engineers designing high-reliability power electronics systems:

Variable frequency drives and servo motor drives — Precise monitoring of motor working current for closed-loop control and overcurrent protection

DC motor drive static converters — Real-time current feedback for DC speed control systems

Battery-powered applications — Monitoring battery charge/discharge current to optimize battery management

Uninterruptible power supplies (UPS) — Real-time input/output current monitoring to ensure critical load power safety

Switching mode power supplies (SMPS) — High-frequency current measurement to improve efficiency and reliability

Welding power supplies — Precise welding current output control for consistent weld quality

Renewable energy systems (PV inverters, wind power converters) — Grid current detection and system protection

Electric vehicle charging stations — Accurate charging current monitoring for safe operation

Why Choose the LA 150-TP?

In industrial automation and power electronics, the accuracy and stability of current measurement directly affect overall system performance. The LA 150-TP continues the excellent quality of the LEM closed-loop Hall effect current sensor series, achieving leading levels in accuracy, response speed, temperature drift control, and noise immunity.

Reduce system maintenance costs — High long-term stability lowers failure rates and maintenance frequency.

Shorten development cycles — PCB mount design, standard dimensions, plug-and-play, comprehensive datasheets for easy debugging.

Enhance end-product competitiveness — Products equipped with LEM sensors gain clear advantages in precision and reliability.