Industrial Power Monitoring Solution – LEM LF1005-S/SP16 | LF Series Current Transducer
The LEM LF1005-S/SP16 is a closed-loop Hall-effect current transducer engineered for precise, galvanically isolated measurement of DC, AC, and pulsed currents up to 1000 A nominal (IPN). Designed for demanding industrial environments, it delivers high accuracy, wide bandwidth, and long-term stability — making it the preferred choice for power electronics engineers worldwide.
Where This Product Is Used
The LF1005-S/SP16 is specified across a broad range of high-power industrial and energy applications:
- Variable Speed Drives (VSD) & Servo Drives – Real-time phase current feedback for precise motor torque and speed control in CNC machines, conveyors, and robotics.
- Solar Inverters & Wind Power Converters – Grid-tie current monitoring for MPPT algorithms and anti-islanding protection in renewable energy systems.
- UPS & Battery Energy Storage Systems (BESS) – Charge/discharge current measurement in lithium-ion and lead-acid battery banks for SOC estimation and protection.
- Traction & EV Charging Infrastructure – DC bus current sensing in EV fast chargers (CCS/CHAdeMO) and railway traction converters.
- Industrial Welding Equipment – High-current pulse measurement in MIG/TIG welding power supplies requiring fast transient response.
- Power Quality Analyzers – Harmonic analysis and power factor correction in industrial substations and smart grid applications.
- Test & Measurement Systems – High-fidelity current waveform capture in power electronics R&D labs and production test benches.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | LF1005-S/SP16 |
| Nominal Current (IPN) | 1000 A RMS |
| Measuring Range | ±1500 A peak |
| Conversion Principle | Closed-loop Hall-effect (compensated) |
| Output Signal | ±4 V (at ±IPN, RL ≥ 10 kΩ) |
| Supply Voltage (VC) | ±15 V (±5%) |
| Current Consumption | ≤ 55 mA (at ±15 V) |
| Accuracy (X = 0) | ±0.5% of IPN |
| Linearity Error | < ±0.1% |
| Bandwidth (−3 dB) | DC to 200 kHz |
| Response Time (tr) | ≤ 1 µs |
| Operating Temperature | −40°C to +85°C |
| Isolation Voltage (VISO) | 3 kV RMS / 50 Hz / 1 min |
| Conductor Aperture | Ø 35 mm |
| Connector | SP16 (16-pin) |
| Mounting | PCB / Panel mount |
| Weight | ~150 g |
| Standards | EN 50178, IEC 61010-1 |
Why Engineers Specify This Model
- Closed-Loop Topology – Virtually eliminates offset drift and temperature dependency, delivering superior accuracy vs. open-loop alternatives.
- Ultra-Fast Response (≤ 1 µs) – Captures high-frequency switching transients in IGBT/SiC-based converters without distortion.
- Wide Bandwidth (DC–200 kHz) – Suitable for both fundamental frequency and harmonic content measurement.
- High Isolation (3 kV RMS) – Protects sensitive control electronics from high-voltage power stages.
- SP16 Connector – Robust, vibration-resistant connector ensures reliable signal integrity in harsh industrial environments.
- Compact Ø35 mm Aperture – Accommodates large bus bars and cable bundles without requiring conductor modification.
Complete System Bill of Materials
For a complete current sensing solution, engineers typically pair the LF1005-S/SP16 with:
- ±15 V Dual-Rail PSU – e.g., MEAN WELL MDR-60-15 or equivalent DIN-rail power supply
- Signal Conditioning Board – Differential amplifier or ADC input buffer (e.g., TI INA826, AD8221)
- Primary Conductor / Bus Bar – Copper flat bar, sized for 1000 A continuous (recommend ≥ 60 × 10 mm cross-section)
- SP16 Mating Connector & Harness – LEM SP16 connector kit or equivalent 16-pin industrial connector
- Shielded Signal Cable – Twisted-pair shielded cable (e.g., Belden 9501) for output signal routing
- Mounting Hardware – M4 stainless steel screws and DIN-rail adapter bracket
- DSP / Microcontroller – e.g., TI TMS320F28379D or STM32G4 series for real-time current control loops
Compliance & Industry Standards
- EN 50178 – Electronic equipment for use in power installations
- IEC 61010-1 – Safety requirements for electrical equipment for measurement, control, and laboratory use
- RoHS Compliant – Restriction of Hazardous Substances Directive 2011/65/EU
- CE Marked – Conformity with applicable EU directives
- UL Recognized – Component recognition for North American markets (verify current listing with LEM)
Quality Assurance & Sourcing
At Konmask.com, every LEM LF1005-S/SP16 unit is:
- Sourced directly from LEM-authorized distribution channels or verified surplus stock
- Inspected for physical integrity, connector condition, and label authenticity
- Tested for basic electrical continuity prior to dispatch
- Shipped in anti-static packaging with full traceability documentation
- Backed by our 90-day quality guarantee and responsive technical support
How to Source This Part
Ready to order or need a custom quantity quote? Contact our team:
- Email: support@konmask.com
- Phone / WhatsApp: +0086 19859288691
- Lead Time: In-stock units ship within 1–3 business days; special orders 7–15 business days
- MOQ: 1 piece — no minimum order requirement
- Payment: T/T, PayPal, credit card, and trade assurance accepted
- Export: Worldwide shipping with DHL, FedEx, UPS, and sea freight options
Application-Specific FAQ
Q: Can the LF1005-S/SP16 measure DC current accurately?
A: Yes. The closed-loop Hall-effect principle provides accurate DC measurement with minimal offset, unlike Rogowski coils which are AC-only.
Q: What is the difference between LF1005-S/SP16 and LF1005-S/SP1?
A: The SP16 suffix denotes the 16-pin connector variant, optimized for PCB or panel integration. The SP1 variant uses a different connector footprint. Verify your existing harness before ordering.
Q: Is this transducer suitable for SiC MOSFET inverters with fast switching (≥ 100 kHz)?
A: Yes. The 200 kHz bandwidth and ≤ 1 µs response time make it compatible with high-frequency SiC and GaN-based power stages.
Q: Can I use a single +15 V supply instead of dual ±15 V?
A: No. The LF1005-S/SP16 requires a dual ±15 V supply. Single-supply operation is not supported and will result in incorrect output.
Q: What is the shelf life of unused units?
A: LEM transducers have no defined shelf life when stored in dry, ESD-safe conditions at 15–35°C. We recommend functional verification before installation if stored > 2 years.
Q: Do you provide calibration certificates?
A: Calibration certificates can be arranged upon request for an additional fee. Contact us before ordering to confirm availability.
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Original Source: https://Konmask.com
Contact: support@konmask.com | +0086 19859288691
