LV100-3000/SP11 High-Precision Closed-Loop Hall-Effect Voltage Transducer

LV100-3000/SP11 Brand: LEM – Global Leader in Electrical Measurement

In modern industrial power electronics, the accuracy of voltage detection directly determines the safety and stability of the entire system. The LV100-3000/SP11 voltage transducer, built by Switzerland’s LEM (the pioneer of closed-loop Hall-effect transducers), is a high-performance, reliable precision component specifically designed for high-voltage measurement. It is widely trusted by customers in key applications such as variable frequency drives, servo drives, UPS systems, and railway power equipment.

LV100-3000/SP11 Product Overview

The LV100-3000/SP11 is a high-accuracy closed-loop Hall-effect voltage transducer from LEM’s LV100 series, designed for electronic measurement of DC, AC, and pulsed voltages. The primary nominal voltage is 3000 V, with a maximum measurable range extending to ±4500 V – covering the vast majority of industrial high-voltage monitoring requirements.

The transducer offers full electrical isolation between the primary and secondary circuits, with a tested isolation voltage of 9 kV @ 50 Hz for 1 minute. This ensures operator safety and protects downstream electronics, eliminating concerns about ground potential interference and electric shock risks in high-voltage systems.

LV100-3000/SP11 Key Advantages & Technical Features

1. Excellent Accuracy & Linearity

Using advanced closed-loop Hall-effect compensation technology, the transducer achieves an overall accuracy of ±0.7% and linearity better than 0.1%. It delivers consistent, distortion-free signals across the wide input voltage range, ensuring reliable measurements under all operating conditions.

2. Very Low Temperature Drift

Unlike common sensors that drift significantly with temperature, the LV100-3000/SP11 exhibits extremely low zero drift (thermal drift of ±0.2 ~ ±0.3 mA/°C). Combined with a wide operating temperature range of 0°C to +70°C, it offers excellent long-term stability – ideal for hot workshops, outdoor substations, or sealed cabinets.

3. Fast Response Time (milliseconds class)

Response time is only 180 µs (reaching 90% of the final output). This allows the transducer to capture fast voltage transients and spikes, giving your overvoltage protection and dynamic control systems a critical time advantage.

4. High Insulation & Noise Immunity

The insulating plastic case meets UL 94-V0 (highest flame retardancy rating). The closed-loop compensation architecture provides superior immunity to common-mode and electromagnetic interference, ensuring reliable operation even in “electromagnetic heavy environments” filled with inverters and high-power switching devices.

5. Integrated Onboard Design

The primary resistor (R1) is integrated inside the housing, simplifying external circuitry, making PCB layout more compact, and speeding up assembly. Weight is only 850 grams.

LV100-3000/SP11 Technical Specifications

LV100-3000/SP11 Wide Range of Applications

With its high voltage capability, accuracy, and excellent isolation, the LV100-3000/SP11 is ideal for:

✔ AC variable speed drives & servo motor drives – precision monitoring of DC bus voltage to ensure smooth, efficient motor control.
✔ Static converters for DC motor drives – reliable voltage feedback for rectification and inversion stages.
✔ Uninterruptible power supplies (UPS) – real-time monitoring of input/output voltage to ensure backup power reliability.
✔ Welding equipment power supplies – accurate voltage detection under high voltage and transient conditions, ensuring consistent weld quality.
✔ Industrial robots, cranes, elevators, railway & mass transit equipment – meets the strict reliability and safety standards of heavy industry.

Why Buy From LV100-3000/SP11?

✅ Authorized / Genuine product – Sourced directly from LEM or a first-tier authorized distributor. Every unit is brand new, original – no refurbished or used goods.
✅ Stock available (fast flexible small-batch orders) – 2,500+ units in stock. Quick response for both sample testing and volume orders.
✅ Full technical support – For large customers and special applications, we provide professional selection guidance and datasheets.
✅ Aftersales peace of mind – 7day quality guarantee, 100% functional testing. All shipments use heavyduty antistatic packaging to ensure perfect delivery.