Sanghvi Electronics

📘 General Description

The LF1005‑S is a high-precision, closed-loop Hall-effect current transducer designed for AC, DC, and pulsed current measurement in industrial and power electronics applications.

Key features:

• Galvanic isolation between primary and secondary circuits for safe monitoring of high currents.

• Closed-loop Hall-effect sensing ensures high accuracy, fast response, and excellent linearity.

• Suitable for motor drives, power converters, UPS systems, and renewable energy inverters.

🔌 Electrical Specifications 🌡️ Environmental & Safety Ratings

• Operating Temperature: –40 °C to +85 °C

• Storage Temperature: –50 °C to +90 °C

• Isolation Voltage: Up to 12 kV RMS (primary-secondary) depending on model

• Creepage/Clearance: Designed for reinforced insulation and industrial safety standards (IEC 61010‑1 / EN 50178)

🧩 Mechanical / Mounting

• Mounting Type: Through-hole / panel mount, primary conductor passes through central aperture.

• Housing: Insulated plastic, UL94-V0 rated

• Mass: ~500–700 g depending on model

• Secondary Connection: Cable or connector (SP16/SP36 differ in connector type)

⚙️ Functional Highlights

• High linearity and accuracy over wide current ranges

• Fast response suitable for dynamic current measurement

• Galvanic isolation ensures safe measurement in high-voltage circuits

• Can handle rapid current transients (high di/dt)

• Works with AC, DC, and pulsed currents

📌 Typical Applications

• Variable Frequency Drives (VFDs) and servo drives

• UPS and battery-based power systems

• Power converters, inverters, and welding equipment

• Renewable energy systems and traction applications

📌 Overview

The HAT 500‑S is an open‑loop Hall‑effect current transducer designed for non‑contact measurement of AC, DC, and pulsed currents up to 500 A RMS. It provides a voltage output proportional to the primary current with galvanic isolation between the high‑power primary circuit and the secondary electronics, making it suitable for industrial power sensing and control applications.

🔧 Key Technical Specifications 🔌 Operating Principle

Open‑loop Hall effect:

• A magnetic Hall sensor detects the magnetic field created by current through the primary conductor.

• The sensor produces a proportional voltage output without a closed compensation loop (simpler and lower cost than closed‑loop designs).

• Galvanic isolation separates the high‑power current path from the measurement side to protect downstream electronics.

🌡️ Environmental & Safety

• Operating Temperature: −40 °C to +105 °C allowing use in demanding industrial environments.

• Isolation & Insulation: High insulation resistance (>1000 MΩ at 500 V DC) improves safety against high‑voltage stress.

• Housing: Insulating plastic case recognized per UL 94‑V0, ensuring flame retardance.

• Standards Compliance: Designed to meet industrial safety standards such as EN 50178 and UL 508 (depending on region/version).

🛠️ Typical Applications

• DC and AC motor drives

• Switched‑mode power supplies (SMPS)

• Uninterruptible Power Supplies (UPS)

• Battery‑powered systems and chargers

• Industrial automation current monitoring

• Welding power supplies

• Variable‑frequency inverters and power converters                                                                                                                                   

📌 Overview

The LF 310‑S is a current transducer based on closed‑loop Hall‑effect (compensated) technology. It provides galvanically isolated measurement of AC, DC, and pulsed currents. The device is typically panel‑mounted with a through‑hole aperture for the primary conductor and produces a current output proportional to the measured current.

This type of transducer is widely used in industrial control systems, power supplies, motor drives, inverters, UPS units, and energy monitoring equipment.

🔧 Key Technical Specifications 🧠 Operating Principle

• Closed‑Loop Hall‑Effect: Uses an internal magnetic core and Hall sensor with a feedback compensation loop to provide high linearity, low offset drift, and stable measurement across temperature.

• Galvanic Isolation: Primary and secondary circuits are electrically isolated, improving safety and protecting measurement electronics from high voltages.

• Current Output: The sensor outputs a secondary current proportional to the primary current, suitable for direct interfacing with measurement systems that accept a current input (e.g., mA interface stages).

🌡️ Performance Characteristics

Accuracy & Linearity:

• Tight overall accuracy (~0.2 % of I_PN) and very low offset drift over temperature provide precise measurements even in demanding environments.

Bandwidth:

• Typical frequency response up to ~100 kHz (–3 dB), allowing faithful tracking of fast current changes and high‑frequency components.

Fast Dynamic Response:

• Sub‑microsecond reaction time makes the LF 310‑S suitable for PWM‑driven systems and pulsed current applications.

📦 Physical & Installation Notes

• Aperture Size: Approximately 20 mm through‑hole to allow primary conductor/cable insertion.

• Panel Mounting: Rugged mechanical design intended for secure panel installation.

• Connectors: Versions may use standard connectors (Molex, JST), depending on suffix (e.g., SP10, SP16, SP20).

📍 Typical Applications

• Industrial Drives & Motor Controllers

• Power Supplies & UPS Systems

• Renewable Energy Inverters & Solar Power Systems

• Battery Management & DC‑DC Converters

• Test & Measurement Equipment

• Welding Power Sources