LTC1000-S/SP29,LTC 1000-S/SP29

LTC1000-S/SP29 Closed-Loop Hall-Effect Current Transducer – Precision Drive for Your Industrial Future

LTC1000-S/SP29 Product Overview

In modern industrial automation and high-efficiency energy systems, the accuracy and reliability of current measurement directly impact system safety, operational stability, and overall performance.
The LEM LTC1000-S/SP29 closed-loop Hall-effect current transducer is a professional-grade high-current measurement solution designed for demanding applications. Part of LEM's renowned LTC1000 series, this model is optimized for drive systems, traction systems, and other high-power industrial environments.

With outstanding ±1% accuracy and a peak measurement capability of 2400 A, the LTC1000-S/SP29 has become a trusted core component for engineers worldwide – where every current measurement means precision and dependability.

LTC1000-S/SP29 Key Technical Specifications

LTC1000-S/SP29 Key Features & Advantages

Closed-Loop Hall-Effect Technology – Precision & Stability

The LTC1000-S/SP29 uses advanced closed-loop Hall-effect technology. Unlike open-loop designs, the closed-loop structure generates a compensating magnetic field via a secondary coil, creating negative feedback that cancels the primary field. This eliminates core hysteresis and temperature drift, resulting in excellent linearity (< ±0.1%) and very low thermal drift across the entire operating range. Whether at ambient or extreme temperatures, measurement accuracy remains consistently high.

Kiloamp-Level High-Current Measurement

With a rated current of 1000 A r.m.s. and a peak measuring range up to ±2400 A, this transducer easily handles most industrial high-current applications – from motor drives to traction systems.

Microsecond Response Time – Capture Transient Events

A <1 µs response time means the LTC1000-S/SP29 can instantly capture fast current transients. In applications such as motor startup, short-circuit protection, or power semiconductor switching, this speed allows control systems to act immediately, maximizing equipment safety.

Wide Temperature Range – Built for Harsh Environments

From -40°C arctic cold to +85°C desert heat, the LTC1000-S/SP29 operates reliably over an extremely wide temperature range. Its UL94-V0 flameretardant case provides additional safety in high-risk installations.

Galvanic Isolation – System Safety

Closed-loop Hall technology inherently provides galvanic isolation between the primary highvoltage power circuit and the secondary control circuit, preventing interference and potential breakdown – a vital safety feature for high-voltage, high-power systems.

Modular Design – Flexible Installation

The LTC1000-S/SP29 features a compact, modular design that adapts to various system layouts. It supports horizontal or vertical mounting, with or without a busbar. The mounting bracket can be supplied with the device or separately, and can be installed in three different ways for three possible longitudinal mounting configurations. The busbar itself also offers two mounting options. This flexibility greatly simplifies integration, reduces development time, and lowers system costs.

LTC1000-S/SP29 Typical Applications

The LTC1000-S/SP29 is widely used in demanding industrial fields thanks to its outstanding performance and proven reliability.

Railway Traction Systems – LTC series transducers are specifically designed for railway and traction applications, including traction converters, auxiliary converters, and choppers. LEM has decades of field-proven experience in the railway industry.

Industrial Drives & Motor Control – In variable frequency drives and servo systems, the LTC1000-S/SP29 provides real-time motor current monitoring. Its <1 µs response ensures accurate capture of load changes, enabling optimal control and early fault detection.

Renewable Energy & Energy Storage – In PV inverters, wind turbine converters, and BMS/EMS/PCS energy storage systems, this transducer delivers precise DC/AC current measurement. Its DC~100 kHz bandwidth also captures high-frequency ripple details.

EV & Charging Infrastructure – For on-board chargers (OBC), DC fast chargers, and battery management systems, the LTC1000-S/SP29 ensures accurate charging current monitoring and safety compliance.

Specialty & Industrial Power Supplies – UPS systems, telecom power, RF supplies, electroplating power supplies, welding equipment – any highpower supply application benefits from the LTC1000-S/SP29’s feedback and protection capabilities.

Battery Testing & Fuel Cell Systems – In battery formation/testing and fuel cell test benches, this transducer delivers high-accuracy current measurement for reliable R&D data.

Why Choose LTC1000-S/SP29?

Swiss-based LEM is a global leader in current and voltage sensing, with over 50 years of deep expertise and proven applications in industry, railway, renewable energy, and automotive electronics.

Proven Quality – Rigorous quality control and reliability validation for industrial, onboard, and harsh environments.

Wide Selection – Thousands of standard models plus flexible mounting options to meet diverse customer needs.

Technology Leadership – Continuous R&D investment in closed-loop Hall-effect and fluxgate technologies.

Global Supply & Support – Authorized distribution and technical support worldwide, ensuring fast delivery and short development cycles.