ART-B22-D125-SP3 + AI-P1A – 3 Pcs, 3 Phase Rogowski Coil Set, Class 1, 1 Amp AC, Sensitivity, and Measurement Range, 12.5cm Diameter, 3M integrator Cable

LEM ART-B22-D125-SP3 + AI-P1A – 3 Pcs, 3 Phase Rogowski Coil Set, Class 1, 1 Amp AC, Sensitivity, and Measurement Range, 12.5cm Diameter, 3M integrator Cable

The universal Rogowski coil integrator AI-P1A complements LEM’s flexible clip-around coil ART and ARU range. The 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-P1A is DIN rail mounted and can be stacked for multiphase application without spacing thanks to its low power dissipation.

Input signal

• Accuracy Class 1 (IEC 61869-2) ^[1].
• Linearity error ≤ 0.10 %. Protection degree IP2X.
• 35 mm DIN rail mounted.
• Push-in terminals.

• 1 Amp instantaneous output.
• 6 selectable sensitivities depending on Rogowski coil: 22.5, 70, 80, 85, 100, 120 mV/kA at 50 Hz.

• 12 selectable ranges: 100, 200, 300, 400, 500, 600, 800, 1000, 1500, 2000, 4000, 5000 A.
• Ambient operating temperature −25…+70 °C.

Advantages

• Compact design for DIN rail assembly
• High accuracy Class 1 (IEC 61869-2)
• Setup by user via Select / Edit buttons
• Clear status indication via bi-color led

Applications

• MV/LV substations on LV side: Transformer Condition Monitoring
• Power metering: 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): isolate the site of the fault
• Remote Terminal Units (RTU)
• Phasor Measurement Units (PMU)

Standards

• IEC 61010-1: 2010
• UL
• EMC: IEC 61326-1:2012

Options

Cross Power Plug-in: side contacts to stack up to 3 Integrator modules and use only one power supply.

Specification

LEM Part Number	ART-B22-D125-SP3 + AI-P1A – 3 Pcs
Function	3 Phase AC Current Measurement
Measuring Range	Selectable 5000,4000,2000,1500,1000,800,600,500,400,300,200,100Amp
Sensitivity	Selectable 22.5,70,80,85,100,120mV/kA @ 50 Hz
Output	1 Amp Instantaneous
Frequency Measuring Range	50-1500Hz (15th Harmonic)
Operating Voltage	10-32VDC
Accuracy	1% from 25 to 5000 Amp
Current Consumption	100mA (max)
Dimensions	100mm x 78mm x 15mm (Integrator), 12.5cm Diameter (Coils)
Mounting	Din Rail Mount
Integrator to Coil cable	3M Twisted and Screened
Integrator to Meter cable	User Supplied Shielded cable 1.5mm sqr, up to 6m long
Operating Temperature	-25°C – 70°C
Storage Temperature	-45°C to 80°C
Isolation (50Hz, 1 min)	1.5kV
True RMS Response Time	160-190ms
Termination Style	Push-in for 1.5mm sqr wire
Weight	1125g
Factory Pack Qty	1
Certifications	UL, ROHS

Datasheet

• AI-P1A Datasheet
• ART Series Datasheet

Application Notes

• User Notice

1) The Rogowski coil can measure any primary current as there is no saturation effect.

2) Not tested given that in the worst case (load = 0 Ohm i.e. short circuit on the output) the peak dissipated power remains low (< 2 Watts)

3) Frequency bandwidth and phase shift modelling schematic can be provided on request.

4) Referring to the main phase offset of 90 ° (a Rogowski coil is a derivative current transducer)

5) Considering a primary conductor of at least ⌀ 15 mm, perpendicular and in contact with the Rogowski coil.

6) Considering an external conductor of at least ⌀ 15 mm the same current level than internal conductor, perpendicular and in contact with the Rogowski coil.