LF 205, 305, 505, 1005, 2005 Family

For DC, AC, pulse currents' measurements of 100 to 2000 ARMS nominal with galvanic isolation

LF 205, 305, 505, 1005, 2005 - CURRENT SENSORS

The LF 205, 305, 505, 1005, and 2005 current sensor family has been meticulously designed to cater to industrial and railway applications. These sensors are optimized for the precise measurement of DC, AC, and pulsed currents while ensuring galvanic isolation between the primary circuit and the secondary circuit.

The LF electronic parts feature a compact design and are characterized by their exceptional precision and rapid response times.

While LF 205, 305, 505, 1005, and 2005 can all be panel-mounted in various configurations, LF 205 offers the additional option of PCB mounting, allowing for flexibility in integration.

These five product series feature different aperture diameters for the primary conductor crossing. LF 205 has a 15.5 mm diameter aperture, LF 305 offers a 20.1 mm diameter aperture, LF 505 provides a 30.2 mm diameter aperture, LF 1005 offers a choice between a 40.5 x 13 mm or 38 mm diameter aperture, and LF 2005 presents a 60.5 x 20.5 mm or 27 mm diameter aperture.

These current sensors rely on closed-loop Hall effect technology, which enhances their accuracy and reliability in industrial and railway applications, making them well-suited for a variety of contexts where precise current measurements are crucial.

LF 205, 305, 505, 1005, 2005 – Features and benefits

LF 205, 305, 505, 1005, 2005

Main characterisrtics

  • Closed loop (compensated) current sensor using the hall effect
  • Isolated plastic case recognized according to UL 94-V0

Benefits

  • Excellent accuracy
  • Very good linearity
  • Low temperature drift
  • Optimized response time
  • Wide frequency bandwidth
  • No insertion losses
  • High immunity to external interference
  • Current overload capability

Typical applications

The LF 205, 305, 505, 1005, and 2005 current sensors are extensively utilized in the industrial sector and the railway sector. In industrial applications, they find application in various scenarios, including:

  • AC variable speed drives and servo motor drives
  • Static converters for DC motor drives
  • Battery supplied applications 
  • Uninterruptible Power Supplies (UPS)
  • Switched Mode Power Supplies (SPMS)
  • Power supplies for welding applications

In the railway area, the LF current transducers can be used in fixed installations or trackside as well as onboard trains (traction). In this specific domain, it is also common to use these sensors in the following applications:

  • Single or three phase inverters
  • Propulsion and braking choppers
  • Propulsion converters
  • Auxiliary converters
  • Battery chargers

LEM LF 205, 305, 505, 1005, 2005 – Download & Technical Characteristic

Product Document Primary nominal RMS voltage Supply Voltage range Op. Temperature
LF 205-S/SP3

Datasheet
3D

100 A 12 to 15 -40 to 85 °C
LF 205-S/SP5

Datasheet
3D

100 A 12 to 15 -40 to 85 °C
LF 205-S Datasheet
3D
200 A 12 to 15 -40 to 85 °C
LF 205-S/SP1 Datasheet
3D
200 A 12 to 15 -40 to 85 °C
LF 205-P Datasheet
3D
200 A 12 to 15 -40 to 85 °C
LF 205-P/SP1 Datasheet
3D
200 A 12 to 15 -40 to 85 °C
LF 305-S/SP7 Datasheet 250 A 15 to 15 -40 to 85 °C
LF 305-S Datasheet
3D
300 A 12 to 20 -40 to 85 °C
LF 305-S/SP10 Datasheet
3D
300 A 12 to 20 -40 to 85 °C
LF 305-S/SP16 Datasheet
3D
300 A 24 to 24 -10 to 70 °C
LF 505-S Datasheet
3D
500 A 15 to 24 -40 to 70 °C
LF 505-S/SP15 Datasheet
3D
500 A 15 to 24 -10 to 70 °C
LF 505-S/SP22 Datasheet
3D
500 A 15 to 24 -40 to 70 °C
LF 505-S/SP23 Datasheet
3D
500 A 24 to 24 -40 to 85 °C
LF 505-S/SP39 Datasheet
3D
500 A 15 to 24 -10 to 70 °C
LF 505-S/SP40 Datasheet
3D
500 A 15 to 24 -40 to 70 °C
LF 1005-S Datasheet
3D
1000 A 24 to 24 -40 to 85 °C
LF 1005-S/SP14 Datasheet
3D
1000 A 24 to 24 -40 to 85 °C
LF 1005-S/SP22 Datasheet
3D
1000 A 15 to 24 -40 to 85 °C
LF 1005-S/SP33 Datasheet
3D
1000 A 24 to 24 -40 to 85 °C
LF 2005-S/SP9 Datasheet
3D
1000 A 15 to 24 -40 to 85 °C
LF 2005-S Datasheet
3D
2000 A 15 to 24 -40 to 85 °C
LF 2005-S/SP1 Datasheet
3D
2000 A 15 to 24 -40 to 85 °C
LF 2005-S/SP3 Datasheet
3D
2000 A 15 to 24 -40 to 70°C
LF 2005-S/SP8 Datasheet
3D
2000 A 15 to 24 -40 to 85 °C
LF 2005-S/SP11 Datasheet
3D
2000 A 15 to 24 -40 to 85 °C
LF 2005-S/SP13 Datasheet
3D
2000 A 15 to 24 -40 to 80 °C
LF 2005-S/SP23 Datasheet
3D
2000 A 15 to 24 -25 to 70 °C

LF 205, 305, 505, 1005, 2005 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.

Contact Us