AI-PMUL

## AI-PMUL 

## CONFIGURABLE ROGOWSKI COIL SIGNAL CONDITIONER 

The universal Rogowski coil integrator AI-PMUL 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-PMUL is DIN rail mounted and can be stacked for multiphase application without spacing thanks to its low power dissipation. 

## **Input signal** 

- [Accuracy Class 0.5 (IEC 61869-2) ] **[[1]]**[.] 

- [Linearity error ≤ 0.10 %.] 

- [Protection degree IP2X.] 

- [35 mm DIN rail mounted.] 

- [Push-in terminals.] 

- [4 selectable true RMS output signals:  ] 0…20 mA, 4…20 mA, 0…5 V, 0…10 V. 

- [2 selectable instantaneous output signals:  ] 225 mV, 333 mV. 

- [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.] 

## **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).] 

## **Standards** 

- [Safety: IEC 61010-1: 2010.] 

- [EMC: IEC 61326-1: 2012.] 

## **Advantages** 

- [Compact design for DIN rail assembly.] 

- [High accuracy Class 0.5 (IEC 61869-2).] 

## **Options** 

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

- [Setup by user via Select / Edit buttons.] 

- [Clear status indication via bi-color led.] 

> **[1]** AI-PMUL Integrators fulfill accuracy class limits defined by IEC 61869-2 even if this standard does not apply to Rogowski integrators. See detailed curve of accuracy given in this document. 

N° 97.T5.99.000.0 19March2020/Version 1 

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LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice. 

AI-PMUL series CONFIGURABLE ROGOWSKI COIL SIGNAL CONDITIONER 

## **Material and Insulation coordination** 

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Parameter Symbol Unit Value Comment<br>**----- End of picture text -----**<br>


|RMS voltage for AC insulation test,|_U_d|kV|1.5|Between power supply 24 V and|
|---|---|---|---|---|
|50 Hz, 1 min||||Rogowski connection + output|
|Flammability according to UL94|-|-|V0|-|
|Material|-|-|Polyamide|Halogen free|



## **Environmental characteristics** 

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Parameter Symbol Unit Value Comment<br>**----- End of picture text -----**<br>


|Ambient operating temperature|_T_A|°C|−25...+70|
|---|---|---|---|
|Ambient storage temperature|_T_S|°C|−40...+85|
|Relative humidity (non-condensing)|_RH_|%|95|
|Altitude above sea level|-|m|2000|
|Mass|_m_|g|58|



## **Mechanical characteristics** 

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Parameter Symbol Unit Value Comment<br>**----- End of picture text -----**<br>


|General dimensional tolerance|-|mm|±1|
|---|---|---|---|
|Dimensions|-|mm³|100 × 78 × 15|
|Mounting on DIN rail (IEC 60715)|-|-|TH35-7.5|
||||TH35-15|



## **Power Supply** 

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Parameter Symbol Unit Value Comment<br>**----- End of picture text -----**<br>


|24 V DC Supply voltage|_U_C DC|V|+10...+32||
|---|---|---|---|---|
|Current consumption|_I_C|mA|max. 100|at 24 V|
|Auxiliary supply through micro-USB||V|5|For product configuration only|



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LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice. 

## AI-PMUL series 

CONFIGURABLE ROGOWSKI COIL SIGNAL CONDITIONER 

## **Input Signal** 

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Parameter Symbol Unit Data Comment<br>**----- End of picture text -----**<br>


|Rogowski coil sensitivity selection|||With push buttons|See product configuration|
|---|---|---|---|---|
|||||description|
|Selection indication|||bi-color LED|Green: Current range|
|||||Red: Sensitivity & Output|
|Rogowski coil sensitivities||mV/kA|22.5, 70, 80, 85, 100,|At 50 Hz|
||||120||
|Typical input impedance||kΩ|10||
|Rated frequency|ƒr|Hz|50…60|Automatic recognition of grid|
|||||frequency|
|Frequency bandwidth (at 3 dB)|_BW_|Hz|10…1500|Measurement bandwidth|
|Current measurement range selection|||With push buttons||
|Current measurement range||A|100, 200, 300, 400, 500,||
||||600, 800, 1000, 1500,||
||||2000, 4000, 5000||
|Overcurrent measurement range||%|120|Overcurrent based on maximum|
|||||value of the range selected|
|Short time withstand current||kA|130|Worst case scenario with a Rogowski|
|on primary for 3 s **[1]**||||coil sensitivity of 120mV/kA|



## **Output Signal** 

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Parameter Symbol Unit Min Typ Max Comment<br>**----- End of picture text -----**<br>


|0...20 mA true RMS current output mode|_I_out|mA|0|-|24|20 mA @ 100% I range|
|---|---|---|---|---|---|---|
|4...20 mA true RMS current output mode|_I_out|mA|4|-|23.2|20 mA @ 100% I range|
|0...5 V true RMS voltage output mode|_U_out|V|0|-|6|5 V @ 100% I range|
|0...10 V true RMS voltage output mode|_U_out|V|0|-|12|10 V @ 100% I range|
|225 mV instantaneous voltage output mode|_U_out|mV|0|-|270|225 mV rms @ 100% I range|
|333 mV instantaneous voltage output mode|_U_out|mV|0|-|400|333 mV rms @ 100% I range|
|Load resistance (all current output mode)|_R_L|Ω|0|-|500||
|Load resistance (all voltage output mode)|_R_L|kΩ|1|-|-||
|Temperature drift (all output mode)|_TCS_|ppm/K|-|-|150|From −25 °C … +70 °C|
|Phase displacement @ 50 Hz or 60 Hz **[2]**|_Δφ_|-|-|-|0.5°||
|Accuracy class|-||-|0.5**[3]**|-||
|Linearity error|_ɛ_L|%|||0.1||
|Response time 10% (true RMS) current rise|_t_D10|ms|||45||
|Response time 90% (true RMS) current rise|_t_D90|ms|||160||
|Response time 10% (true RMS) current fall|_t_D10|ms|||65||
|Response time 90% (true RMS) current fall|_t_D90|ms|||190||



> **[1]** Maximum AI-PMUL input voltage of 16 V for 3 s equivalent of measurement of short time current of 130 kA for 3 s with a Rogowski coil of 120 mV/kA sensitivity. For higher short time current rated network please consult our technical team. 

> **[2]** Value for instantaneous signal output and steady state primary current. 

> **[3]** AI-PMUL Integrators fulfill accuracy class limits defined by IEC 61869-2 even if this standard does not apply to Rogowski integrators. See detailed curve of accuracy given in this document. 

N° 97.T5.99.000.0 19March2020/Version 1 

**3/12** 

LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice. 

CONFIGURABLE ROGOWSKI COIL SIGNAL CONDITIONER 

## AI-PMUL series 

## **Definition of typical, minimum and maximum values** 

Minimum and maximum values for specified limiting and safety conditions have to be understood as such as well as values shown in “typical” graphs. 

On the other hand, measured values are part of a statistical distribution that can be specified by an interval with upper and lower limits and a probability for measured values to lie within this interval. 

Unless otherwise stated (e.g. “100 % tested”), the LEM definition for such intervals designated with “min” and “max” is that the probability for values of samples to lie in this interval is 99,73 %. 

For a normal (Gaussian) distribution, this corresponds to an interval between −3 sigma and +3 sigma. If “typical” values are not obviously mean or average values, those values are defined to delimit intervals with a probability of 68,27 %, corresponding to an interval between −sigma and +sigma for a normal distribution. 

Typical, minimum and maximum values are determined during the initial characterization of the product. 

## **Compatibility between current range selected and Coil sensitivity selected** 

Current range and coil sensitivity should be chosen according to the table below. 

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Coil sensibility selected<br>22.5 70 80 85 100 120<br>100      <br>200      <br>300    <br>400      <br>500      <br>600      <br>800      <br>1000      <br>1500      <br>2000     <br>4000 <br>5000 <br>Current Range Selected<br>**----- End of picture text -----**<br>


N° 97.T5.99.000.0 19March2020/Version 1 

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LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice. 

## AI-PMUL series 

## CONFIGURABLE ROGOWSKI COIL SIGNAL CONDITIONER 

## **Typical performance characteristics, Range 100 A** 

## Output 0 … 20 mA, Sensitivity 22.5 mV/kA 

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2 0,15<br>1,5<br>0,1<br>1<br>0,05<br>0,5<br>0 0<br>-0,5<br>-0,05<br>-1<br>-0,1<br>-1,5<br>-2 -0,15<br>5 25 45 65 85 105 5 25 45 65 85 105<br>I P (A) I P (A)<br>Output 0 … 10 V, Sensitivity 22.5 mV/kA<br>2 0,15<br>1,5<br>0,1<br>1<br>0,05<br>0,5<br>0 0<br>-0,5<br>-0,05<br>-1<br>-0,1<br>-1,5<br>-2 -0,15<br>5 25 45 65 85 105 5 25 45 65 85 105<br>I P (A) I P (A)<br>Output 0 … 225 mV, Sensitivity 22.5 mV/kA<br>2 0,15<br>1,5<br>0,1<br>1<br>0,05<br>0,5<br>0 0<br>-0,5<br>-0,05<br>-1<br>-0,1<br>-1,5<br>-2 -0,15<br>5 25 45 65 85 105 5 25 45 65 85 105<br>I P (A) I P (A)<br>Class 0,5 Full scale error 0,5% Class 0,5<br>Sample results Full scale error 1% Sample results<br> (% of Ipn) ε L<br>Measurement error (%)<br> (% of Ipn) ε L<br>Measurement error (%)<br> (% of Ipn) ε L<br>Measurement error (%)<br>**----- End of picture text -----**<br>


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LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice. 

AI-PMUL series CONFIGURABLE ROGOWSKI COIL SIGNAL CONDITIONER 

## **Typical performance characteristics, Range 1000 A** 

## Output 0 … 20 mA, Sensitivity 22.5 mV/kA 

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2 0,15<br>1,5<br>0,1<br>1<br>0,05<br>0,5<br>0 0<br>-0,5<br>-0,05<br>-1<br>-0,1<br>-1,5<br>-2 -0,15<br>50 250 450 650 850 1050 50 250 450 650 850 1050<br>I P (A) I P (A)<br>Output 0 … 10 V, Sensitivity 22.5 mV/kA<br>2 0,15<br>1,5<br>0,1<br>1<br>0,05<br>0,5<br>0 0<br>-0,5<br>-0,05<br>-1<br>-0,1<br>-1,5<br>-2 -0,15<br>50 250 450 650 850 1050 50 250 450 650 850 1050<br>I P (A) I P (A)<br>Output 0 … 225 mV, Sensitivity 22.5 mV/kA<br>2 0,15<br>1,5<br>0,1<br>1<br>0,05<br>0,5<br>0 0<br>-0,5<br>-0,05<br>-1<br>-0,1<br>-1,5<br>-2 -0,15<br>50 250 450 650 850 1050 50 250 450 650 850 1050<br>I P (A) I P (A)<br>Class 0,5 Full scale error 0,5% Class 0,5<br>Sample results Full scale error 1% Sample results<br> (% of Ipn) ε L<br>Measurement error (%)<br> (% of Ipn) ε L<br>Measurement error (%)<br> (% of Ipn) ε L<br>Measurement error (%)<br>**----- End of picture text -----**<br>


N° 97.T5.99.000.0 19March2020/Version 1 

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LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice. 

CONFIGURABLE ROGOWSKI COIL SIGNAL CONDITIONER 

## AI-PMUL series 

## **Example of application** 

Product configuration: 

- [Range (green LED): 5000 A] 

- [Output signal (red LED): 0 … 10 V] 

- [Sensitivity (red LED): 22.5 mV/kA] 

The graph hereafter give conversion between the primary current, the voltage output of Rogowski coil and the output voltage of the AI-PMUL. 

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Output voltage (V)<br>Measure on 1 kΩ<br>12<br>20 %<br>10 | | | | | |, HE<br>a iaeea—lté~<br>aA lh<br>20 %<br>2<br>0 Rogowski coil signal (mV)<br>22,5 112,5 135 22.5 mV / kA sensitivity<br>Primary current (kA)<br>0 1 5 6<br>Saturation - Range LED is blinking<br>**----- End of picture text -----**<br>


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AI-PMUL series CONFIGURABLE ROGOWSKI COIL SIGNAL CONDITIONER 

## **Example of typical transient response output 0 … 10 V** 

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Current (A)<br>15<br>10<br>5<br>0<br>-5<br>t<br>D10<br>-10<br>t<br>D90<br>-15<br>-0,05 0 0,05 0,1 0,15 0,2 0,25 0,3 0,35<br>Time (s)<br>Grid<br>AI-PMUL Output<br>**----- End of picture text -----**<br>


## **Current rise** 

- [t] D 10[ < 45 ms] 

- [t] D 90[ < 160 ms] 

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Current (A)<br>15<br>10<br>5<br>0<br>-5 t<br>D10<br>-10<br>t<br>D90<br>-15<br>-0,05 0 0,05 0,1 0,15 0,2 0,25 0,3 0,35<br>Time (s)<br>Grid<br>AI-PMUL Output<br>**----- End of picture text -----**<br>


## **Current fall** 

- [t] D 10[ < 65 ms] 

- [t] D 90[ < 190 ms] 

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AI-PMUL series CONFIGURABLE ROGOWSKI COIL SIGNAL CONDITIONER 

**Connections and Interfaces** 

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A<br>B<br>E<br>a : )<br>Ley<br>.<br>C D<br>RC+<br>RC-<br>OUT+<br>OUT-<br>RC+<br>RC-<br>OUT+<br>OUT-<br>V +<br>V -<br>NC<br>22.5<br>70<br>80<br>85<br>100<br>120<br>5000 A<br>4000 A<br>2000 A<br>1500 A<br>1000 A<br>800 A<br>600 A<br>500 A<br>400 A<br>300 A<br>200 A<br>100 A<br>0-20mA<br>4-20mA<br>5V<br>10V<br>225mV<br>333mV<br>0-20mA<br>4-20mA<br>5000 A<br>4000 A<br>2000 A SELECT<br>EDIT<br>50Hz<br>mV/kA @<br>**----- End of picture text -----**<br>


> **A SMA Input for Rogowski coil (optional)** Section: 0.13 ... 1.5 mm[2] 

## **D   Cross Power plug-in** 

Side contacts to stack up to 3 Integrator modules and use only 1 power supply. 

**B   Terminal input coil and output signal** Section: 0.13 ... 1.5 mm[2] **E   Micro USB** @ **C   Power supply terminals (DC, 24 V)** Section: 0.13 ... 1.5 mm[2] (24 ... 16 AWG) Third pin not connected 

## **E   Micro USB** 

Energise AI-PMUL for configuration without connecting 24 V DC supply. 

|**Parameter**|**Unit**|**Min**|**Typ**|**Max**<br>**Comment**|**Max**<br>**Comment**|
|---|---|---|---|---|---|
|Type|||Push-in|||
|Clamping range|mm2|0.13|-|1.5||
|Cross section|AWG|24|-|16||
|Stripping length|mm|9.5|10|10.5||



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AI-PMUL series CONFIGURABLE ROGOWSKI COIL SIGNAL CONDITIONER 

## **AI-PMUL series: name and codification** 

## **- AI PMUL** 

**Family:** AC Integrator 

**Case type / Output signal:** P: DIN RAIL mounting / MUL: Multiple output 

|**Description**|**Item Number**|**Comment**|
|---|---|---|
|AI-PMUL|90.T5.99.000.0|Integrator Low Power standard|
|||for automation applications|
|AI ACCESSORY KIT M1 CROSS POWER PLUG-IN|90.T8.98.000.0|Cross Power plug-in accessory:|
|||Kit to connect 2 integrators power supplies|



## **Dimensions (in mm)** 

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7<br>6<br>5<br>4<br>5000 A 0-20mA<br>4000 A 4-20mA<br>2000 A 5V<br>1500 A 10V<br>1000 A 225mV<br>800 A 333mV<br>600 A 22.5<br>100 500 A 70<br>400 A 80<br>300 A 85<br>200 A 100<br>100 A 120<br>SELECT<br>EDIT<br>3<br>2<br>1<br>2<br>15 78<br>wl L_ 85.5 —<br>mV/kA @ 50Hz<br>**----- End of picture text -----**<br>


## **Installation, removal, wiring** 

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a<br>J 4S<br>To install, rotate terminal to mount   To remove the device, use a 4 mm<br>on the rail DIN flat screwdriver<br>SELECT<br>EDIT<br>SELECT<br>SELECT<br>EDIT<br>EDIT<br>22.5100120708085 22.5100708085<br>120<br>0-20mA<br>4-20mA225mV333mV5V10V 0-20mA4-20mA225mV5V10V<br>333mV<br>5000 A<br>4000 A2000 A1500 A1000 A800 A600 A500 A400 A300 A200 A100 A 5000 A4000 A2000 A1500 A1000 A800 A600 A500 A400 A300 A200 A100 A<br>mV/kA @ 50Hz<br>mV/kA @ 50Hz<br>**----- End of picture text -----**<br>


To remove wiring easily, use any tools or a 2.5 mm flat screwdriver 

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AI-PMUL series CONFIGURABLE ROGOWSKI COIL SIGNAL CONDITIONER 

## **Safety and warning notes** 

**In order to guarantee safe operation of the signal conditioner and to be able to make proper use of all features and functions, please read these instructions thoroughly!** 

**Safe operation can only be guaranteed if the signal conditioner is used for the purpose it has been designed for and within the limits of the technical specifications.** 

## **Caution** 

Ignoring the warnings can lead to serious injury and/or cause damage! The electric measuring signal conditioner may only be installed and put into operation by qualified personnel that have received an appropriate training. The corresponding national regulations shall be observed during installation and operation of the signal conditioner and any electrical conductor. The signal conditioner shall be used in electric/electronic equipment with respect to applicable standards and safety requirements and in accordance with all the related systems and components manufacturers’ operating instructions. 

The product must be powered by a limited power source. The product shall be operated with Rogowski Coil compliant with IEC 61010-2-032. Consistency of measurements during  maintenance operations shall be checked. Consistency of measurement during commissioning and maintenance shall be checked with suitable means (clamp-on ammeter). Product shall not saturate . 

## **Caution, possibility of electric shock** 

When operating the signal conditioner, certain parts next to the signal conditioner may carry hazardous live voltage. The user shall ensure to take all measures necessary to be protected against electrical shock. Certain parts may contain conducting parts that shall not be accessible after installation. A protective enclosure or additional insulation barrier may be necessary. Installation and maintenance shall be done with the main power supply disconnected except if there are no hazardous live parts in or in close proximity to the system and if the applicable national regulations are fully observed. 

Safe and trouble-free operation of this signal conditioner can only be guaranteed if transport, storage and installation are carried out correctly and operation and maintenance are carried out with care. The signal conditioner shall not be opened or modified. If not working, the signal conditioner shall be replaced by an equivalent device. To avoid electrical burn, electric shock or arc flash, do not install Rogowski coils on or remove them from hazardous live conductors. Any connection to the product shall fulfil the requirements for safety extra low voltage (SELV) circuits. 

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## **LEM International SA** 

Chemin des Aulx 8, 1228 Plan-les-Ouates, Suisse +41 22 706 11 11 www.lem.com 

N° 97.T5.99.000.0 19March2020/Version 1 

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LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice.LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice.