FRS, FL Series | Open Loop Coreless Integral Sensors | LEM

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FRS, FL Series | Open Loop Coreless Integral Sensors | 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 : FRS & FL Series FRS & FL Series Our new Open Loop Coreless Integral sensors (OLCI) for the electronic measurement of current up to 42kA

Order now Distributor List Contact Sales FRS, FL - Open Loop Coreless Integral Sensors Our brand-new FRS and FL product series are designed for the electronic measurement of DC, AC, and pulsed current with galvanic separation between the primary and secondary circuits.

The FRS current sensors allow the measurement of current up to 9000 A, while the FL sensors can reach up to 42 kA. Both product series are available with either a current output (4-20 mA) or an instantaneous voltage output (0-5 V).

The main difference between the two product series lies in the size of the sensor: FRS sensors feature a 104 mm aperture, whereas FL sensors are available with either a 200 mm or a 300 mm aperture width.

Utilizing OLCI (Open Loop Coreless Integral) technology, FRS and FL coreless transducers ensure reliable and accurate current measurements in industrial, traction, and trackside applications.

FRS, FL – Features and benefits FeaturesHall effect Open Loop Coreless Integral current sensorUnipolar or Bi-polar measurement of primary current up to 42 kAInstantaneous 4-20 mA current output or Instantaneous 0-5 V voltage outputPower supply +12 or +24 V DCGalvanic separation between primary and secondary circuitFactory calibratedWhile they can ensure unipolar or bi-polar measurement of primary current up to 9000 A, FRS sensors also feature:

High bandwidth > 1 MHzVery low delay time up to Main characteristicsWide measurement rangeNo magnetic offsetLow consumption and low lossesWide range of rectangular busbar dimensionsLight weight designM12 field connectorIn addition, FL current sensors are available with two aperture widths: 200 mm and 300 mm.

Typical applicationsBoth FRS and FL coreless high current sensors, known for their ability to measure DC, AC, and pulse currents, are widely used in a variety of industrial areas, as well as in traction and trackside applications. Examples of these applications include:

Wind turbine power converterElectrolyserHigh power drives Video FRS & FL - Open Loop Coreless Integral (OLCI) current sensors FRS, FL transducers - Standards compliance FRS, FL SeriesIEC 62477-1: 2022IEC 61800-5-1: 2022IEC 62109-1: 2010IEC 61010-1: 2010EN 50155: 2021IEC 61992-7-2: 2006UL 61010-1: 3ED 2022 LEM FRS, FL – Download & Technical Characteristic FRS Series

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Primary nominal RMS current

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Op. Temperature

FL Series

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Primary nominal RMS current

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Op. Temperature

FL 12000-SD200

3D
Datasheet
User guide12000 A12 to 24-40 to 85°CFL 12000-SD300

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User guide12000 A12 to 24-40 to 85°CFL 12000-SDBI200

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User guide12000 A12 to 24-40 to 85°CFL 12000-SDBI300

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User guide12000 A12 to 24-40 to 85°CFL 12000-SDBIH200

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User guide12000 A12 to 24-40 to 85°CFL 12000-SDBIH300

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User guide12000 A12 to 24-40 to 85°CFL 12000-SDH200

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User guide12000 A12 to 24-40 to 85°CFL 12000-SDH300

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User guide12000 A12 to 24-40 to 85°CFL 12000-SDU200

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User guide12000 A12 to 24-40 to 85°CFL 12000-SDU300

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User guide12000 A12 to 24-40 to 85°CFL 12000-SDUH200

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User guide12000 A12 to 24-40 to 85°CFL 12000-SDUH300

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User guide12000 A12 to 24-40 to 85°CFL 12000-SDUI200

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User guide12000 A12 to 24-40 to 85°CFL 12000-SDUI300

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User guide12000 A12 to 24-40 to 85°CFL 12000-SDUIH200

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User guide12000 A12 to 24-40 to 85°CFL 12000-SDUIH300

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User guide12000 A12 to 24-40 to 85°CFL 16000-SD200

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User guide16000 A12 to 24-40 to 85°CFL 16000-SD300

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User guide16000 A12 to 24-40 to 85°CFL 16000-SDBI200

Datasheet
User guide16000 A12 to 24-40 to 85°CFL 16000-SDBI300

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User guide16000 A12 to 24-40 to 85°CFL 16000-SDBIH200

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User guide16000 A12 to 24-40 to 85°CFL 16000-SDBIH300

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User guide16000 A12 to 24-40 to 85°CFL 16000-SDH200

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User guide16000 A12 to 24-40 to 85°CFL 16000-SDH300

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User guide16000 A12 to 24-40 to 85°CFL 16000-SDU200

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User guide16000 A12 to 24-40 to 85°CFL 16000-SDU300

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User guide16000 A12 to 24-40 to 85°CFL 16000-SDUH200

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User guide16000 A12 to 24-40 to 85°CFL 16000-SDUH300

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User guide16000 A12 to 24-40 to 85°CFL 16000-SDUI200

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User guide16000 A12 to 24-40 to 85°CFL 16000-SDUI300

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User guide16000 A12 to 24-40 to 85°CFL 16000-SDUIH200

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User guide16000 A12 to 24-40 to 85°CFL 16000-SDUIH300

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User guide16000 A12 to 24-40 to 85°CFL 20000-SD200

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User guide20000 A12 to 24-40 to 85°CFL 20000-SD300

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User guide20000 A12 to 24-40 to 85°CFL 20000-SDBI200

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User guide20000 A12 to 24-40 to 85°CFL 20000-SDBI300

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User guide20000 A12 to 24-40 to 85°CFL 20000-SDBIH200

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User guide20000 A12 to 24-40 to 85°CFL 20000-SDBIH300

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User guide20000 A12 to 24-40 to 85°CFL 20000-SDH300

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User guide20000 A12 to 24-40 to 85°CFL 20000-SDU200

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User guide20000 A12 to 24-40 to 85°CFL 20000-SDU300

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User guide20000 A12 to 24-40 to 85°CFL 20000-SDUH200

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User guide20000 A12 to 24-40 to 85°CFL 20000-SDUH300

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User guide20000 A12 to 24-40 to 85°CFL 20000-SDUI200

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User guide20000 A12 to 24-40 to 85°CFL 20000-SDUI300

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User guide20000 A12 to 24-40 to 85°CFL 20000-SDUIH200

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User guide20000 A12 to 24-40 to 85°CFL 20000-SDUIH300

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User guide20000 A12 to 24-40 to 85°CFL 24000-SD200

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User guide24000 A12 to 24-40 to 85°CFL 24000-SD300

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User guide24000 A12 to 24-40 to 85°CFL 24000-SDBI200

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User guide24000 A12 to 24-40 to 85°CFL 24000-SDBI300

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User guide24000 A12 to 24-40 to 85°CFL 24000-SDBIH200

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User guide24000 A12 to 24-40 to 85°CFL 24000-SDBIH300

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User guide24000 A12 to 24-40 to 85°CFL 24000-SDH200

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Datasheet
User guide24000 A12 to 24-40 to 85°CFL 24000-SDH300

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User guide24000 A12 to 24-40 to 85°CFL 24000-SDU200

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User guide24000 A12 to 24-40 to 85°CFL 24000-SDU300

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User guide24000 A12 to 24-40 to 85°CFL 24000-SDUH200

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User guide24000 A12 to 24-40 to 85°CFL 24000-SDUH300

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User guide24000 A12 to 24-40 to 85°CFL 24000-SDUI200

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User guide24000 A12 to 24-40 to 85°CFL 24000-SDUI300

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User guide24000 A12 to 24-40 to 85°CFL 24000-SDUIH200

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User guide24000 A12 to 24-40 to 85°CFL 24000-SDUIH300

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User guide24000 A12 to 24-40 to 85°CFL 28000-SD200

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User guide28000 A12 to 24-40 to 85°CFL 28000-SD300

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User guide28000 A12 to 24-40 to 85°CFL 28000-SDBI200

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User guide28000 A12 to 24-40 to 85°CFL 28000-SDBI300

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User guide28000 A12 to 24-40 to 85°CFL 28000-SDBIH200

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User guide28000 A12 to 24-40 to 85°CFL 28000-SDBIH300

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Datasheet
User guide28000 A12 to 24-40 to 85°CFL 28000-SDH200

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Datasheet
User guide28000 A12 to 24-40 to 85°CFL 28000-SDH300

3D
Datasheet
User guide24000 A12 to 24-40 to 85°CFL 28000-SDU200

3D
Datasheet
User guide12000 A12 to 24-40 to 85°CFL 28000-SDU300

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Datasheet
User guide28000 A12 to 24-40 to 85°CFL 28000-SDUH200

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Datasheet
User guide28000 A12 to 24-40 to 85°CFL 28000-SDUH300

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Datasheet
User guide28000 A12 to 24-40 to 85°CFL 28000-SDUI200

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User guide28000 A12 to 24-40 to 85°CFL 28000-SDUI300

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User guide28000 A12 to 24-40 to 85°CFL 28000-SDUIH200

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User guide28000 A12 to 24-40 to 85°C FRS, FL 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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