AI-P1A

AI-P1A 1 AMPERE OUTPUT ROGOWSKI COIL SIGNAL CONDITIONER The Rogowski coil integrator AI-P1A complements LEM’s flexible clip-around coil ART and ARU families to provide a 1 A output instantaneous signal to replace conventional current transformer with dynamic extended range. AI-P1A is DIN rail mounted. Features Applications • • • • • • • • • • • 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: 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 0.5 (IEC 61869-2) Setup by user via Select / Edit buttons Clear status indication via bi-color led Over-temperature protection function. • • • • 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 UL 61010-1: pending. Options • Cross Power Plug-in: side contacts to stack up to 3 Integrator modules and use only one power supply Application Domains • • Industrial Smart grid. Note: 1) AI-P1A 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.T7.99.000.0 18November2020/Version 1 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice. 1/12 AI-P1A series 1 AMPERE OUTPUT ROGOWSKI COIL SIGNAL CONDITIONER Material and Insulation coordination Parameter Symbol Unit Value Comment RMS voltage for AC insulation test, 50 Hz, 5 seconds Ud kV 1.5 Between power supply 24 V and Rogowski connection + output Flammability according to UL94 - - V0 - Material - - Polyamide Halogen free Parameter Symbol Unit Value Comment Ambient operating temperature (1) TA °C −25 ...+70 Ambient storage temperature TA st °C −40 ...+85 Relative humidity (non-condensing) RH % 95 Altitude above sea level - m 2000 Mass m g 100 Parameter Symbol Unit Value General dimensional tolerance - mm ±1 Dimensions - mm³ 100 × 78 × 23.1 Mounting on DIN rail (IEC 60715) - - TH35-7.5 TH35-15 Parameter Symbol Unit Value 24 V DC Supply voltage UC DC V +16.8 ...+31.2 Current consumption (2) IC mA max. 350 @ 24 V with 1 A output V 5 For product configuration only Environmental characteristics Mechanical characteristics Comment Power Supply Auxiliary supply through micro-USB Comment Notes: 1) The over-temperature protection may limit the output current in certain conditions of use. Please refer to the derating curve on page 5. 2) Please refer to consumption curve on page 5. 2/12 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice. N° 97.T7.99.000.0 18November2020/Version 1 AI-P1A series 1 AMPERE OUTPUT ROGOWSKI COIL SIGNAL CONDITIONER Input Signal Symbol Unit Data Comment Rogowski coil sensitivity selection With push buttons See product configuration description Selection indicator bi-color LED Green: Current range Red: Sensitivity & Output Parameter Rogowski coil sensitivities mV/kA 22.5, 70, 80, 85, 100, 120 Typical input impedance kΩ 10 Hz 50 … 60 Rated frequency ƒr Current measurement range selection At 50 Hz Automatic recognition of grid frequency 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 selected range Short time withstand current on primary for 3 s (1)  kA 130 Worst case scenario with a Rogowski coil sensitivity of 120 mV/kA Output Signal Parameter Symbol Unit Min Typ Max Comment 0 ...1 A instantaneous current output mode Iout A 0 1 1.2 1 A @ 100% I range (2) Load resistance RL Ω 0 - 1.5 Temperature coefficient of S (all output mode) TCS ppm/K - - 150 From −25 °C … +70 °C Frequency bandwidth (@ −3 dB) BW Hz 9 1450 10 1500 11 1550 Low cut-off frequency High cut-off frequency Phase displacement @ 50 Hz or 60 Hz  Δφ ° - - 0.2 Accuracy class - - 0.5 Linearity error ɛL % (3)  0.1 Notes: 1) Maximum AI-P1A 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) Output signal is 1.2 A for 120% of I range, nevertheless the product is not intended to be used on continuous mode at this output level. Thermal protection may operate in case of thermal overload. 3) AI-P1A 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.T7.99.000.0 18November2020/Version 1 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice. 3/12 AI-P1A series 1 AMPERE OUTPUT ROGOWSKI COIL SIGNAL CONDITIONER 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. Coil sensibility selected 22.5 70 80 85 100 120                                                              100 200 Current Range Selected 300 400 500 600 800 1000 1500 2000 4000 5000 Front panel LED indicator 4/12 Green (x12) Current range Red (lower x6) Input sensitivity Range position blinking Red + Green Input overload Running light Over temperature protection activated (output disabled) LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice. N° 97.T7.99.000.0 18November2020/Version 1 AI-P1A series 1 AMPERE OUTPUT ROGOWSKI COIL SIGNAL CONDITIONER AI-P1A output current vs load resistance Ambient temperature 25 °C … 70 °C 1) Iout (A) 1.1 25 °C 1 65 °C 0.9 70 °C 0.8 0.7 0.6 0.5 0.4 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 1.2 1.3 1.4 1.5 RL (Ω) Note: 1) Typical values measured in laboratory conditions (climatic chamber, stirred air) AI-P1A current consumption vs temperature 600 mA 500 mA 400 mA 300 mA 200 mA 100 mA 0 mA -25 °C 0 °C 16.8V / 1 Arms 16.8V / 0 Arms 25 °C 24V / 1 Arms 24V / 0 Arms 50 °C 75 °C 31.2V / 1 Arms 31.2V / 0 Arms Supply voltage 16.8 V … 31.2 V Ouput current 0 ARMS and 1 ARMS N° 97.T7.99.000.0 18November2020/Version 1 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice. 5/12 AI-P1A series 1 AMPERE OUTPUT ROGOWSKI COIL SIGNAL CONDITIONER Typical performance characteristics, Range 100 A Output 0 … 1 A, Sensitivity 22.5 mV/kA εL (% of IPN) 2.5 0.15 2.0 0.10 1.5 Class accuracy 0.5 1.0 Full scale error 0.5% 0.05 0.5 0.0 0.00 -0.5 -1.0 -0.05 -1.5 -0.10 -2.0 -2.5 0 20 40 60 80 100 120 -0.15 0 20 40 60 80 100 IP (A) Measurement error (%) @ 25 °C 120 IP (A) Linearity error (% of IP N) @ 25 °C Typical performance characteristics, Range 1000 A Output 0 … 1 A, Sensitivity 22.5 mV/kA εL (% of IP N) 0.15 2.5 2.0 0.10 1.5 1.0 Class accuracy 0.5 Full scale error 0.5% 0.05 0.5 0.0 0.00 -0.5 -0.05 -1.0 -1.5 -0.10 -2.0 -2.5 0 200 400 600 800 1000 1200 -0.15 0 200 400 600 IP (A) Measurement error (%) @ 25 °C 6/12 800 1000 1200 Ip (A) Linearity error (% of IP N) @ 25 °C LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice. N° 97.T7.99.000.0 18November2020/Version 1 AI-P1A series 1 AMPERE OUTPUT ROGOWSKI COIL SIGNAL CONDITIONER Example of application Product configuration: • • • Range (green LED): 5000 A Output signal: 0 … 1.2 A Sensitivity (red LED): 22.5 mV/kA The graph hereafter gives conversion between the primary current, the voltage output of Rogowski coil and the output voltage of the AI-P1A. Output current (A) 1.2 20 % 1 20 % 0.2 0 22,5 0 112,5 1 5 135 6 Rogowski coil signal (mV) 22.5 mV / kA sensitivity Primary current (kA) Saturation - Range LED is blinking N° 97.T7.99.000.0 18November2020/Version 1 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice. 7/12 AI-P1A series 1 AMPERE OUTPUT ROGOWSKI COIL SIGNAL CONDITIONER Example of typical transient response output 0 … 1 A 1,5 1 Normalized 0,5 0 -0,5 -1 tD 90 -1,5 -0,1 0 0,1 0,2 0,3 0,4 0,5 0,6 0,7 0,8 0,9 1 Time (s) AI-P1A Output Current rise Grid Error tD 90 < 240 ms 1,5 1 Normalized 0,5 0 -0,5 -1 -1,5 tD 90 -0,1 0 0,1 0,2 0,3 0,4 0,5 0,6 0,7 0,8 0,9 1 Time (s) AI-P1A Output Current fall 8/12 Grid Error tD 90 < 240 ms LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice. N° 97.T7.99.000.0 18November2020/Version 1 AI-P1A series 1 AMPERE OUTPUT ROGOWSKI COIL SIGNAL CONDITIONER Connections and Interfaces A E B C A  MA Input for Rogowski coil (optional) S Section: 0.13 ... 1.5 mm2 B Terminal input coil and output signal Section: 0.13 ... 1.5 mm2 C D Cross Power plug-in Side contacts to stack up to 3 Integrator modules and use only 1 power supply. E Micro USB Energise AI-1A for configuration without connecting 24 V DC supply. Power supply terminals (DC, 24 V) Section: 0.13 ... 1.5 mm2 (24 ... 16 AWG) Third pin not connected Parameter Unit Min Type Typ Max Comment Push-in Clamping range mm Cross section Stripping length N° 97.T7.99.000.0 18November2020/Version 1 D 0.13 - 1.5 AWG 24 - 16 mm 9.5 10 10.5 2 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice. 9/12 AI-P1A series 1 AMPERE OUTPUT ROGOWSKI COIL SIGNAL CONDITIONER AI-P1A series: name and codification AI-P1A Family: AC Integrator Case type / Output signal 1 A: P: DIN RAIL mounting / 1 Ampere output Description Item Number Comment AI-P1A 90.T7.99.000.0 Integrator 1A standard for automation applications AI ACCESSORY KIT M1 CROSS POWER PLUG-IN (1) 90.T8.98.000.0 Cross Power plug-in accessory: Kit to connect 2 integrators power supplies Dimensions (in mm) 7 6 5 4 5000 A 4-20mA 1A 4000 A 5V 2000 A 1500 A 10V 1000 A 225mV 800 A 22.5 500 A 70 400 A 80 300 A 85 200 A 100 100 A 120 333mV mV/kA @ 50Hz 100 600 A SELECT EDIT 3 2 1 23.1 78 85.5 Installation, removal, wiring 100 200 A 100 A 120 CT SELE EDIT 1A A A 5000 A 2000 A 4000 A A 1000 A 800 A 600 A 500 A 400 A 300 A 200 A 100 A 22.5 70 80 85 mV/kA @ 50Hz 1500 100 120 2000 A 1500 A 1000 A 800 A 600 A 500 A 400 A 300 A 200 A 100 A 1A 22.5 70 80 85 mV/kA @ 50Hz 5000 4000 100 120 SELECT SELECT EDIT EDIT To install, rotate terminal to mount on the rail DIN To remove the device, use a 4 mm flat screwdriver To remove wiring easily, use any tools or a 2.5 mm flat screwdriver Note: 1) the stacking of 3 AI-P1A with this kit may reduce the maximum temperature before triggering the over-temperature protection. A special care must be taken in the installation and venting conditions: N° 97.T7.99.000.0 18November2020/Version 1 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice. 10/12 AI-P1A series 1 AMPERE OUTPUT 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. N° 97.T7.99.000.0 18November2020/Version 1 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice. 11/12 LEM International SA Chemin des Aulx 8, 1228 Plan-les-Ouates, Suisse +41 22 706 11 11 www.lem.com 12/12 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice. N° 97.T7.99.000.0 18November2020/Version 1