The LA 20-PB is a current transducer manufactured by LEM. It is designed for the electronic measurement of DC, AC, and pulsed currents. It offers galvanic isolation between the primary circuit (current being measured) and the secondary circuit (output signal).

Applications:

• AC variable speed drives
• Static converters for DC motor drives
• Battery supplied applications
• Uninterruptible Power Supplies (UPS)
• Switched Mode Power Supplies (SMPS)
• Welding applications

Features:

• Closed loop (compensated) current transducer using the Hall effect.
• Galvanic isolation between primary and secondary circuits.
• Compact design.
• Low power consumption.
• Excellent accuracy.

Benefits:

• Accurate current measurement: Provides precise measurement of current, essential for control and monitoring applications.
• Electrical isolation: Protects the secondary circuit from high voltage in the primary circuit, enhancing safety and reliability.
• Reliable performance: Ensures consistent and dependable operation in demanding industrial environments.
• Easy integration: Simplifies system design and implementation.

Additional Details:

The LA 20-PB operates with a supply voltage of ±15V DC. It measures currents up to 20A. The output signal is a current proportional to the measured primary current. The isolation voltage is typically 2.5 kV RMS. The operating temperature range is typically -10°C to +70°C.