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ATO Series: high accuracy split-core current transformer

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ATO Series: high accuracy split-core current transformer Skip to main content EN JP CN EN JP CN Check Stock Career Investors Contact Products Applications Support About Lem Search Current Sensors 45-90 A 90-180 A 187.5-375 A 375-750 A 750-1500 A 1500-3000 A 3000-6000 A 6000-12000 A 12000-24000 A Other value All Current Sensors Voltage Sensors 25-50 V 50-100 V 100-200 V 200-400 V 400-800 V 800-1600 V 1600-3200 V 3200-6400 V All Voltage Sensors Integrated Current Sensors GO Series HMSR Series GXS Series GXN Series GXM Series All Integrated Current Sensors Rogowski Coil ART Series ARU Series ARH Series INTEGRATORS FOR ROGOWSKI COILS Energy Meters DCES DCBM 400 & 600 DCBM 100 TEMA4G EM4T II All Energy Meters Automotive Battery Management EV Chargers Automotive Motor Control Smart Grid Welding Automation Drives High Precision Power Supplies Renewable Energies Trackside Traction After Sales & RMA Merchandize authorization RMA Categories All after sales and RMA Downloads Application Notes Brochures Certificates All Downloads Technical FAQs General All Technical FAQs Company Information History Board of Directors & Committees Organization Values Compliance Sustainability Our locations All Company Information Quality & Environment Quality Environment All Quality & Environment Our partners Become a LEM Supplier Our general terms & conditions Our distributors News & Events All News & Events What do you need ? Product information Check Stock Global information GO EN JP CN EN JP CN Products Current Sensors Voltage Sensors Integrated Current Sensors Rogowski Coil Energy Meters Applications Automotive Battery Management EV Chargers Automotive Motor Control Smart Grid Welding Automation Drives High Precision Power Supplies Renewable Energies Trackside Traction Support After sales and RMA Downloads Technical FAQs About Lem Company Information Quality & Environment Suppliers News & Events Check Stock Career Investors Contact What do you need ? Product information Check Stock Global information GO Home lem_current_page : ATO Series ATO Series Split-core current transformer with high accuracy and low phase shift.

Order now Distributor List Contact Sales ATO - Split-core current transformers The ATO current sensors are split-core current transformers characterized by high accuracy and low phase shift. 

They are precisely designed for the electronic measurement of AC waveform current, ensuring galvanic separation between the primary circuit (power) and the secondary circuit (measurement). Covering a range from 0 A to 125 A, these current transformers are primarily intended for mounting on the primary circuit.

ATO split-core current transformers are versatile, offering both current and voltage outputs. With compact dimensions, self-powered functionality, and apertures ranging from 10 mm to 16 mm in diameter, they are well-suited for various applications. Additionally, these transformers feature a 1-meter-long cable output.

Utilizing air-core technology, the ATO current transformers are particularly suitable for new Smart-Grid applications, meeting stringent standards such as IEC 61869 for ratio error and phase displacement.

ATO – Features and benefits FeaturesSplit-core current transformerApplication up to 600 V CAT III PD2, basic insulationAccuracy class 1 (IEC 61869-2) and class 3 (IEC 61869-2)Current or Voltage output⌀ 10 mm to 16 mm sensing aperture1 m output cableVery low-cost solutionCompactSelf-poweredSlot for attaching the current transformer on the primary with plastic tieDIN rail adapter (optional)BenefitsNo interruption of electricity during installation on insulated conductorsQuick, non-intrusive and easy setupProvide a calibrate outputTypical applicationsThe ATO sensor series is well-suited for various applications in the smart grid, such as:

Hybrid inverter (Home Energy Storage)Power metering: current measurement for active power calculationBuilding sub-metering: energy efficiency monitoring, consumption analysis and cost allocationPower quality monitoring: electrical loads and distribution system equipmentDistributed measurement systemsCondition monitoring (e.g. Motor loads such as conveyers, pumps) LEM ATO – Download & Technical Characteristic Product

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DocumentPrimary nominal
RMS currentSecondary Nominal
SignalSupply Voltage rangeOp. TemperatureATO-5-B420-D10/SP4Datasheet
3D5 ACurrent20 to 28-10 to 55 °CATO-75-B1I-D10Datasheet
3D75 ACurrentSelf-Powered-10 to 55 °CATO-75-B1I-D10/SP1 Datasheet
3D75 ACurrentSelf-Powered-30 to 70°CATO-75-B333-D10Datasheet
3D75 AVoltageSelf-Powered-20 to 70 °CATO-100-B333-D16Datasheet
3D100 AVoltageSelf-Powered-10 to 55 °CATO-125-B1I-D16Datasheet
3D125 ACurrentSelf-Powered-20 to 70 °CATO-125-B225-D16Datasheet
3D125 AVoltageSelf-Powered-10 to 55 °C ATO Sensors – ASK FOR SAMPLES / QUOTATIONS Looking to receive samples or a quotation? Please click on the contact button below and provide us with the information you need on this product series. Our sales team will get back to you shortly.

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