LEM has introduced the TT series of compact split-core AC current transformers. The core material used is a new type of ferrite with improved magnetic permeability, allowing the accurate measurement of AC signals in an extended frequency range that includes 50/60 Hz.
These transformers feature an absolute accuracy better than 1% at the nominal current and even better for lower primary currents. The ferrite material provides linearity of better than 0,1% even at very low levels, and the transformers have a particularly low phase shift between measured voltage and current of 1,5° ±1°. The hard and dense core allows very small air gaps to be achieved and is virtually insensitive to ageing and temperature changes, in contrast to laminated FeSi or FeNi materials.
Two ranges of primary current measurement are available: 50 A and 100 A. The dimensions of the TT 50-SD are only 36,5 x 43 x 31,5 mm with an 8 mm diameter-sensing aperture for non-contact measurement, whilst the TT 100-SD measures 44,5 x 51 x 36,5 mm with a 16 mm diameter-sensing aperture.
With a 3000:1 ratio, the TT 50-SD and TT 100-SD have low output currents (respectively below 16,66 mA or 33,33 mA). This, together with the internal output-protection circuit, guarantees safe and easy installation without the need to shut down operation since there is no risk of producing a high voltage surge when the transformers are opened, unlike 1 A or 5 A output products.
Being small, safe, self-powered and split-core, the TT current transformers are very easy to install and put into operation. They are ideal for distributed measurement systems and can be retro-fitted into existing installations and non-interruptible equipment. Principal applications will be in the field of energy sub-metering and cost allocation, dynamic consumption and peak analysis, energy waste or defective equipment detection and power quality control.
Powering Innovation eBook: Changing what’s possible
Power Electronics / Power Management
This exclusive read, entitled ‘Changing what’s Possible,’ delves into how power dense Vicor modules enable many world-changing innovations across various sectors.
Read more...16-channel multicell battery monitor Altron Arrow
Power Electronics / Power Management
The ADBMS6830B is a multicell battery stack monitor that measures up to 16 series-connected battery cells with a lifetime total measurement error of less than 2 mV.
Read more...Reliable redundancy with the Mibbo M3DN Series Conical Technologies
Power Electronics / Power Management
Designed for use with two parallel-connected power supplies, the M3DN Series allows for true redundancy, making it ideal for mission-critical applications.
Read more...Automotive power-over-coax inductor RS South Africa
Power Electronics / Power Management
TDK has launched the ADL8030VA, a high-performance inductor designed specifically for power-over-coaxial applications.
Read more...Rugged PSU for challenging conditions Conical Technologies
Power Electronics / Power Management
Built for rugged reliability, the Mibbo MFC Series delivers stable, efficient power in environments where moisture, dust, and temperature extremes are everyday challenges.
Read more...Enhance SiC device efficiency using merged-pin Schottky diodes NuVision Electronics
Editor's Choice Power Electronics / Power Management
Silicon carbide (SiC) has advantages over silicon (Si) that make it particularly suitable for Schottky diodes in applications such as fast battery chargers, photovoltaic (PV) battery converters, and traction inverters.
Read more...15 W power module with wide input range Brabek
Power Electronics / Power Management
RECOM’s miniature power modules provide 15 W output and operate over a wide input range of 18-264 V AC or 18-375 V DC.
Read more...Industrial-grade DIN rail PSU Conical Technologies
Power Electronics / Power Management
The Mibbo MTR960W is a reliable and cost-effective PSU option that delivers a solid 960 W of output power at 24?or 48 V DC.
Read more...Energy harvesting and Matter for smarter homes RF Design
Power Electronics / Power Management
Qorvo’s collaboration with e-peas on the Matter Enabled Light Switch marks another significant step in advancing Matter adoption across the IoT industry.
Read more...3-terminal filters for automotive applications RS South Africa
Power Electronics / Power Management
TDK has expanded its YFF series of 3-terminal filters for automotive applications to include higher voltages up to 35 V and higher capacitances up to 4,7 µF.
While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.
printer friendly version