LV25-P/SP7,LV 25-P/SP7

‌LV25-P/SP7 Product Description: The Precision Core for Industrial Voltage Sensing

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LV25-P/SP7 ‌Key Features‌
Closed-loop Hall effect technology leverages magnetic flux balancing to achieve full galvanic isolation between primary and secondary circuits, ensuring signal purity and operational safety in high-voltage environments;
Ultra-high linearity with total error under ±0.8% and linear error below 0.2%, enabling faithful reconstruction of DC, AC, and pulsed voltage waveforms critical for dynamic control systems;
Wide input range scalability via external resistor R1, supporting measurement from 10 V to 1500 V—eliminating the need for multiple sensor models across diverse voltage levels;
Ultra-fast dynamic response under 40 microseconds, capturing IGBT switching transients, voltage surges, and high-frequency noise to enable real-time overvoltage protection and closed-loop regulation;
Dual-core magnetic compensation paired with differential amplification algorithms suppresses common-mode interference and external electromagnetic fields, ensuring signal stability in noisy industrial settings;
PCB-integrated SIP packaging enables direct surface-mount soldering onto control boards, reducing assembly complexity and enhancing resistance to vibration and thermal stress.

LV25-P/SP7 ‌Technical Specifications‌

‌Primary Rated Current‌: 8 mA RMS (for 10–1500 V range, defined by external R1 resistor)

‌Secondary Rated Output Current‌: 25 mA RMS

‌Supply Voltage Range‌: ±12 V to ±15 V DC (bipolar)

‌Bandwidth‌: DC to 100 kHz

‌Isolation Voltage‌: 2.5 kV AC (compliant with EN50178 industrial safety standard)

‌Temperature Drift‌: ±0.06 mA/°C (0–25°C), ±0.20 mA/°C (full range: -25°C to +70°C)

‌Operating Temperature Range‌: -25°C to +70°C

‌Enclosure Type‌: PCB surface-mount, primary terminals: 0.635×0.635 mm Faston, secondary: 3-pin plug-in

‌Flame Rating‌: UL94-V0 rated engineering plastic housing, meeting stringent fire safety requirements

‌Transformation Ratio‌: 3118:1000 (primary current : secondary current)

LV25-P/SP7 ‌Applications‌
Seamlessly integrated into the control loops of high-power electronics and smart energy systems:

‌Inverters and servo drives‌: Real-time DC bus voltage monitoring ensures motor stability during acceleration, braking, and load transients;

‌Solar and energy storage inverters‌: Precise 1000 V DC-side acquisition enhances MPPT efficiency and grid synchronization accuracy;

‌Uninterruptible Power Supplies (UPS)‌: Delivers high-fidelity feedback for intelligent bypass switching, battery charge/discharge control, and fault prediction;

‌High-current welding systems‌: Maintains signal integrity under intense electromagnetic noise and current spikes, ensuring weld consistency;

‌Railway auxiliary power systems‌: Enables voltage feedback in onboard DC/DC converters, braking resistor control, and auxiliary power units;

‌Battery Management Systems (BMS)‌: Supports accurate voltage sampling in medium-to-high voltage battery stacks, improving cell balancing and cycle-life forecasting.

‌Why Choose LV25-P/SP7 This Model‌
As a global leader in industrial sensing, LEM has embedded over four decades of closed-loop Hall technology expertise into the LV25-P/SP7, establishing it as the benchmark for 10–1500 V voltage monitoring;
Unlike open-loop alternatives, this sensor delivers zero long-term drift, exceptional linearity, and unmatched noise immunity—factory-calibrated, field-zero maintenance, and immune to aging effects;
Its configurable external resistor design allows a single sensor to replace multiple fixed-range models, streamlining inventory, reducing procurement complexity, and accelerating system design;
Certified to UL94-V0 flame resistance and 2.5 kV reinforced isolation, it meets the stringent compliance requirements of medical, renewable energy, and rail industries where safety is non-negotiable;