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RA Series | AC/DC Railway Current Transducers | LEM

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RA Series | AC/DC Railway Current Transducers | LEM 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 : RA Series RA Series Interference Frequencies Detection for the Railway domain

Order now Distributor List Contact Sales RA - Railway current sensors The RA product series serves the purpose of detecting interference frequencies and relies on Rogowski technology (air-core). It enables the measurement of alternating components within a specified bandwidth contained in a continuous primary current.

RA sensors offer a bandwidth ranging from 20 to 3000 Hz. It is important to note that LEM does not include an integrator as part of the RA product range.

These RA current sensors are primarily designed and customized for railway applications.

RA – Features and benefits Main characteristicsAir-core technology (Rogowski measuring principle)Insulating plastic case recognized according to UL 94-V0BenefitsNo insertion lossesCurrent overload capabilityTypical applicationsRA current sensors are specifically designed and manufactured for use in railway applications, finding common use in both fixed installations and onboard trains and locomotives. 

These sensors play a key role in ensuring the safe and efficient operation of electrical systems within the railway domain.

It is usual to find RA sensors in the following applications:

Single or three phase invertersPropulsion and braking choppersPropulsion convertersAuxiliary convertersBattery chargers LEM RA – Download & Technical Characteristics Product

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DocumentPrimary nominal RMS currentMountingOp. TemperatureRA 1005-SDatasheet
3D1000 APanel-25 to 70 °C RA 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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