AI-P1A Series

LEM Signal Conditioner and accessories for Rogowski Coil current sensors

AI P1A – Rogowski Coil Signal Conditioner

The AI‑P1A is a Rogowski coil signal conditioner designed to provide a standardized 1 A instantaneous output, enabling Rogowski coil installations to replace conventional current transformers while benefiting from a significantly wider dynamic measurement range. 

Combined with LEM Rogowski coils, the AI‑P1A delivers accurate current sensing for protection, monitoring, and measurement applications where compatibility with existing current transformer inputs is required. 

Its compact DIN‑rail design simplifies integration into electrical panels and retrofit projects while preserving the advantages of flexible Rogowski coil technology.

INTEGRATOR AI-P1A SERIES

ai-1pa integrator rogowski coil

Main characteristics & benefits

  • Integrator for Rogowski coils
  • Signal conditioner of Rogowski coils secondary signal
  • Linearity error below 0.1%
  • Combined with LEM ART, ARU & ARH class 0.5 Rogowski coils, it offers a universal metering and monitoring solution
  • Compact design for DIN Rail mounting

Features

  • 12 current ranges selection from 100 to 5000 A
  • 6 Rogowski coil sensitivity selection from 22.5 to 120 mV/KA
  • 1 A instantaneous output signal
  • Simple configuration through 2 buttons
  • Visible bi-color led indicating the status
  • Operating temperature range -25°C to +70°C
  • Single supply voltage +24 V
  • Protection Degree IP2X
  • Push-in terminals
  • One power supply can be used for three devices connected to each other.

Typical applications

  • MV/LV substations: transformer condition monitoring
  • Power measurement: current measurement for active power calculation
  • Building sub-metering: energy efficiency monitoring, consumption analysis and cost allocation
  • Power quality monitoring: electrical loads and distribution system equipment
  • Fault Detection, Isolation and Repair (FDIR)
  • Remote Terminal Units (RTU)
  • Automation
  • Smart Grid

SMA coaxial connector for small current measurement is proposed as option.

INTEGRATOR AI-P1A SERIES DOWNLOAD & TECHNICAL CHARACTERISTICS

Product

Order

DocumentNominal ValueOp. TemperatureSelectable sensitivities
AI-P1ADatasheet
3D
100 A – 5000 A-25 °C / 70 °C22.5, 70, 80, 85, 100, 120 mV/kA

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