Key facts
- Manuals
- 26
- Models
- 1
- Languages
- EN · JA · ZH
- Last added
- 2012-06-12
LEM models by category
Featured LEM manuals
LEM LA55-P Current Transducer User Manual
The LA55-P is a Hall‑effect based current transducer offering galvanic isolation between a high‑power primary circuit and a low‑power secondary circuit. It supports DC, AC and pulsed currents with a primary nominal RMS current of 50 A and a measuring range up to 70 A.
The manual details electrical data, mechanical dimensions, mounting instructions, and application examples such as variable‑speed drives, UPS systems, and welding power supplies. Features include closed‑loop compensation, high accuracy, low temperature drift, and wide frequency bandwidth.
Covers: Features · Advantages · Applications · Electrical data · General data · Dimensions
LEM AHR-B5 AC/DC Current Transducer Manual
The AHR‑B5 is an AC/DC current transducer that delivers a 0‑5 V analog output proportional to the measured current. It offers complete electrical isolation between primary and secondary circuits, no insertion loss, and easy mounting, making it suitable for monitoring motor and power‑supply currents with high accuracy.
The manual includes detailed electrical data, performance characteristics, safety and warning notes, isolation and transfer specifications, mechanical dimensions, and recommended installation procedures. It also lists the environmental limits, protection rating (IP20), and recommended torque for mounting screws. This manual is written in Japanese.
Covers: Electrical Data · Performance Data · General Data · Safety and Warning Notes · Isolation Characteristics · Transfer Characteristics
LEM HAS 50..600-S Current Transducer Datasheet
The HAS 50..600-S series uses Hall‑effect technology to measure DC, AC and pulsed currents while providing galvanic isolation between the high‑power primary circuit and the low‑power secondary electronics. It is designed for industrial applications such as variable‑speed drives, UPS, and switched‑mode power supplies.
Key features include a 3000 V isolation voltage, ±15 V supply, accuracy better than ±1 % (excluding offset), response time under 3 µs, and a compact, flame‑retardant polycarbonate housing. The device offers a wide measuring range from 50 A to 600 A and complies with EN 50178 and IEC 61010‑1 safety standards.
Covers: Features · Electrical Data · Isolation Characteristics · Dimensions · Safety · Applications
LEM BLF-S7B Series Current Sensor Manual
This manual describes the LEM BLF‑S7B series current sensors, covering their electrical characteristics, accuracy, and environmental limits. It includes data for the various models (BLF50‑S7B, BLF200‑S7B, etc.) and explains how to install and connect the sensor.
The document lists key parameters such as rated primary current, secondary current, output voltage, power consumption, temperature range, weight, and mechanical dimensions. Installation details include mounting hole spacing and recommended wiring connections. This manual is written in Chinese.
Covers: Features · Electrical Parameters · Mechanical Dimensions · Installation Guidelines · Environmental Specifications · Accuracy and Performance
Latest LEM manuals
LEM Current Transducers HTB 50 .. 400-P HTB 50 .. 100-TP
The HTB 50-P, HTB 100-P, HTB 200-P, HTB 300-P, HTB 400-P Hall current transducers are isolated Hall current transducers with an isolation voltage of 2500V, an output voltage of ±4V, a supply voltage of ±12V to ±15V, a response time of 3µs and a bandwidth of DC .. 50kHz.
LEM Current Transducers HAZ 4000..20000-SRI
Current transducers HAZ 4000..20000-SRI are for the electronic measurement of currents: DC, AC, pulsed, mixed, with a galvanic isolation between the primary circuit (high power) and the secondary.
LEM AC Current transducer AK-C I PN = 10 .. 200 A
This document describes LEM's AC current transducers, which are used for the electronic measurement of AC sinusoidal waveforms with galvanic isolation between the high power and electronic circuits. They have jumper selectable ranges and are self-powered.
LEM Current Transducer HTFS 200..800-P/SP2
This product is a current transducer produced by Honeywell company, which is used to measure DC, AC, pulsed, mixed currents, and has galvanic isolation between the primary circuit (high power) and the secondary circuit (electronic circuit).
LEM DHR-C5 Manual
The DHR-C5 is the transducer for the electronic measurement DC & distorted AC waveforms current, with galvanic isolation between the primary (High power) and the secondary (Low power) circuits.
LEM DHR-C10 DATA SHEET
The DHR-C10 AC/DC current transducer is a high-precision, low-power, small-sized, large-output current sensor. It adopts the Hall effect principle, and uses the iron oxide magnetic core and the bipolar transistor magnetic coupling to convert the large current signal to a low-current signal that can be used for measurement and control systems.
LEM DRH-C10 AC/DC Cuttent transducer handbook
The DHR-C10 is a transducer for the electronic measurement of DC & distorted AC waveforms current, with galvanic isolation between the primary (High power) and the secondary circuit. The current transducer has a linear output of 0-10 V, a maximum peak current of 1800 A.t and is suitable for measuring large currents.
LEM Current Transducers HAX 500 to 2500-S handbook
This document provides the main specifications and characteristics of the HAX series current transducers, including rated current range, supply voltage, output voltage, accuracy, etc.
LEM Voltage sensor LV28-P Manual
LV28-P voltage sensor is a closed-loop (compensated) current sensor based on the Hall principle, the primary and secondary are isolated from each other and are mainly used to measure DC, AC and pulse voltage.
LEM CB-CNS6B1 series current induce handbook
The CB-CNS6B1 series current sensor is used for measuring DC current, with high insulation between the primary and secondary sides.
LEM VBT300-3NND1B4 three-phase Voltage sensor specifications Manual
VBT300-3NND1B4 is a three-phase voltage sensor produced by LEM company. The product features are highly isolated between the primary and secondary sides, the measurement range is 120%V, and the output voltage is 0.5VDC. It is suitable for automation control, measuring instruments, monitoring and other fields.
LEM LT 108-S7 current induce handbook
LT 108-S7 is a current sensor used for measuring DC, AC, and pulse currents. It features high accuracy, good linearity, low temperature drift, fast response time, and wide bandwidth.
LEM LT 208-S7 current induce handbook
LT 208-S7 is a current sensor used for measuring DC, AC, and pulse currents. It has excellent accuracy, good linearity, low temperature drift, optimal response time, and wide bandwidth. The sensor has an insulated housing that meets UL 94-V0 standards and features strong anti-interference ability and high current overload capability.
LEM LT 308-S6 current induce handbook
LT 308-S6 current sensor is a closed-loop (compensated) current sensor based on the Hall principle, the primary and secondary sides are isolated, and are used to measure DC, AC and pulse currents. It features excellent accuracy, good linearity, low temperature drift, optimum response time, wide bandwidth, no insertion loss, strong anti-interference capability, and current overload capacity. It is mainly used in AC frequency conversion servo motors, DC motor traction static conversion, battery power, uninterruptible power supply (UPS), switch power supply (SMPS) and welding machine power supplies.
LEM LT 308-S7 current induce handbook
This document describes the features and characteristics of the LT 308-S7 current sensor, including its application for measuring DC, AC, and pulse currents, and its excellent accuracy, low temperature drift, optimal response time, and wide bandwidth.
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Which document do I need?
User Manual
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Datasheet
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in LEM manuals
What is the primary current measuring range of the LA55-P?
The device measures primary currents from 0 A up to +70 A.
What supply voltage does the LA55-P require?
It operates from a supply voltage of +12 V to +15 V.
What supply voltage does the AHR‑B5 require?
It operates from a supply voltage of 20 V to 50 VDC.
What is the isolation voltage rating of the HAS 50..600‑S transducer?
The transducer provides an isolation voltage of 3000 V.
How much power does the sensor consume?
The sensor draws about 15 mA of current.
What are the operating temperature limits?
It operates between –10 °C and +80 °C.