INTEGRATORS FOR ROGOWSKI COILS

LEM Integrators and accessories for Rogowski Coil current sensors

MULTI-OUTPUT DIGITAL ROGOWSKI INTEGRATORS

LEM provides several Rogowski coil integrators to complement its flexible clip-around coils ART and ARU families.

The AI-PMUL Rogowski coil integrator design is based on digital processing to give combined dynamic range, accuracy, and versatility of use. It offers a wide range of output signals both RMS and instantaneous. AI-PMUL can be stacked for multiphase application without spacing.

AI-P1A Rogowski coil signal conditioner provides a 1 A output instantaneous signal to replace conventional current transformer with dynamic extended range.

AI-P1A and AI-PMUL can be stacked up to 3 Integrator modules and use only one power supply for multiphase application without spacing.

Both LEM integrators for Rogowski Coils are DIN rail mounted.

INTEGRATOR AI-PMUL SERIES

LEM AI-PMUL

Main characteristics & benefits

  • Integrator for Rogowski coils
  • Signal conditioner of Rogowski coils secondary signal
  • Linearity error below 0.1%
  • Combined with LEM ART & ARU class 0.5 Rogowski coils, it offers a universal metering and monitoring solution
  • 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
  • 6 possible outputs selection: 4 true RMS outputs: 0-20 mA, 4-20 mA, 0-5 V & 0-10 V and 2 instantaneous voltage outputs: 0-225 mV and 0-333 mV
  • Simple configuration through 2 buttons
  • Visible bi-colour led indicating the status
  • Operating temperature range -25°C to +70°C
  • Single supply voltage +24 V

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.

3 integrators AI-PMUL can be stacked together with an optional connector to share a single power supply.

INTEGRATOR AI-PMUL SERIES DOWNLOAD & TECHNICAL CHARACTERISTICS

Product Document Nominal Value Op. Temperature Output current
(True RMS)
Output voltage
(True RMS)
Output voltage
(Instantaneous)
AI-PMUL Datasheet
3D
User guide
100 A – 5000 A -25 °C / 70 °C 0-20 mA or 4-20 mA 0-5 V or 0-10 V 0-225 mVac or 0-333 mVac

INTEGRATOR AI-P1A SERIES

ai-1pa integrator rogowski coil

Main characteristics & benefits

  • Compact design for DIN rail assembly
  • High accuracy Class 0.5 (IEC 61869-2)
  • Setup by user via Select / Edit buttons
  • Clear status indication via bi-color led
  • Over-temperature protection function.

Features

  • Accuracy Class 0.5 (IEC 61869-2) (1)
  • Linearity error ≤ 0.10 %
  • Protection degree IP2X
  • 35 mm DIN rail mounted
  • Push-in terminals
  • 1 A instantaneous output signals
  • 6 selectable sensitivities depending on Rogowski coil from 22.5 to 120 mV/kA
  • 12 selectable ranges from 100 to 5000 A
  • Ambient operating temperature: 25 °C to +70 °C.

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.

Just like AI-PMUL, 3 AI-P1A integrators can be stacked together to share a single power supply.

INTEGRATOR AI-P1A SERIES DOWNLOAD & TECHNICAL CHARACTERISTICS

Product Document Nominal Value Op. Temperature Selectable sensitivities
AI-P1A Datasheet
3D
100 A – 5000 A -25 °C / 70 °C 22.5, 70, 80, 85, 100, 120 mV/kA

INTEGRATORS FOR ROGOWSKI COILS – ASK FOR SAMPLES / QUOTATION

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