In today’s world, efficiency of industrial applications is of increasing importance in order to save energy and money. Industrial applications are controlled by power electronics requiring optimal and accurate regulation of electronic parameters such as current, voltage and power. LEM manufactures a wide range of Industrial Transducers and it uses innovative technologies to ensure the high degree of reliability and safety that our customers require.

Key Features

• Industrial Transducers having AC/DC, Complex, impulse current and voltage measurement with galvanic isolation.
• Current and Voltage Sensors with excellent accuracy and good linearity.
• Low thermal drift, Very fast response time and Overload Capability.
• No insertion loses and compact design.
• PCB mountable transducers, Panel mountable transducers, Through hole transducers, ASIC, SMD and split core Transducers.
• Industrial Transducers with LEM’s Non-intrusive technology allows the measurement of very small current flows with high accuracy at reasonable costs

For Current Measurement Application

Technology	Type	Measuring Range	Bandwidth	Typical Accuracy @ 25°C	Linearity	Response time
Hall effect	Open Loop	0-20000 A	0-25 kHz	±1%	±0.5%	< 3-7 µS
	Closed Loop	0-15000 A	0-200 kHz	±0.5%	±0.1%	< 1 µS
Flux gate	C- type	0-150 A	0-250/500 kHz	±0.1%	±0.05%	0.3-0.4 µS
	IT-type	0-25000 A	0-100 kHz	2 ppm	1 ppm	0.3 µS
Rogowski	Prime	0-400 A	10-6 kHz	±1%	±0.5%	500 mS

For Voltage Measurement Application

Technology	Type	Measuring Range	Bandwidth	Typical Accuracy @ 25°C	Linearity	Response time
Hall effect	Closed Loop	0-9500 V	Several kHz	±1%	±1%	10...100 µS
Flux gate	C- type	0-7000 V	0-400/700 kHz	±0.2%	±0.05%	0.6 µS
Isolation Amplifier	AV-type	0-3000 V	0-11 kHz	±0.7%	±0.1%	30 µS
	DV-type	0-6000 V	0-12 kHz	±0.3%	±0.1%	60 µS

 

Applications of Industrial Transducers

Isolated current and voltage measurement with instantaneous current or voltage output. Non contact or with integrated conductor or clip-on current measurement from 0.1 A to 20,000 A. High voltage measurement from 10 V up to 6,400 V. Different technologies used to cover required performances, such as accuracy from some ppm to several percents, or response time, bandwidth

Applications made up of power electronics are following this need to control, regulate and protect at the best with the best components integration. This is also the case for the various applications in power electronics such as:

• Current and Voltage Transducers used for UPS (Uninterruptible Power Supply)
• Current and Voltage Transducers used for SMPS (Switched Mode Power Supplies)
• Current and Voltage Transducers used for Telecom power supplies
• Current and Voltage Transducers used for Solar and Wind Generators
• Current and Voltage Transducers used for Servo motor drives and DC Drives