This non-invasive approach provides for quicker installation with no disruption of service. Many split core or clamp-on options though, come with the compromise of reduced accuracy, reliability and overall performance. Bitronics solves these problems with our nickel-core, individually calibrated, Split-Core CTs made in the USA. Each has a 20A (for 50 Series) or 100A (for M871) primary rating, a 1000:1 turns ratio, and is calibrated to each specific meter and phase, and so are not interchangeable. Mounting brackets bolt to any flat surface with two screws.
Split Core CTs are rated for indoor use and intended for lines having 5A nominal full scale, which are energized to no more than 600V (that is, on the low-side of an existing substation CT). It is not intended to be the main CT on an energized load-carrying conductor including LV applications (residential/light-industrial, less than 600V) where load-carrying conductors generally supply significantly more than 5A. Neither is it appropriate for use on substation CTs that have a 1A nominal full scale.
Each Split Core CT is calibrated to linearize the response of the transformer, resulting in 0.2S class accuracy (IEC 62053- 22 & 23). Heat- treated high-permeability (“superm”) nickel core material produces superior low-end response, phase angle response, and repeatability characteristics compared to ferrite core material competitors. In addition, nickel core material is not brittle, whereas the tension exerted on a ferrite core CT by its secondary windings is often sufficient to chip or fracture the core, affecting its magnetic characteristics.
Split Core CTs operate at 5A nominal full scale, but they can operate up to a maximum of 10A (50 Series) or 100A (M871) with rated accuracy.
The spring-tensioned two bolt gate in the Split Core CT is more durable than the hinge-and-snap type gates used by some competitors, and reduces variation in the magnetic characteristics resulting from repeated opening and closing of the gate. The surfaces where the gate closes the core are lapped for a near-perfect mating surface.
The CTs use Zener diodes to protect against changes in the magnetic characteristics of the core that could otherwise result from operating with the secondary leads open.
Plastic mounting brackets are available for most mounting situations. A twenty-five foot length wire is provided, but by specifying a current-rated output (as opposed to the more common voltage-rated output), the impact of adding a reasonable extension (up to 40 feet total) in the wire length from the split-core CT to the meter is minimal.
November 8, 2016
November 2, 2015
This presentation on IEC 61850 was presented at PAC World Americas Conference in September 2015.
October 8, 2015
This presentation highlights an existing 61850 application that delivers real savings in wiring and engineering.
July 10, 2015
This presentation on IEC 61850 Interoperability was presented at PAC World Conference 2015 in Glasgow, UK on IEC 61850.
July 10, 2015
Split-core or clamp-on CTs provide an alternative to directly wiring to measurement or relay CTs in substation upgrade/retrofit applications when it is desired to add monitoring and SCADA data. The split-core CT option is available on all Bitronics M65x SCADA metering products (all variations of the M650, M651, and M653 models).
June 28, 2012
Additional Datasheets, Application Notes, Customer Success Stories and other documents in our documentation library
Do you know that you can install a fault location and recording solution, and begin transmitting substation SCADA data in less than an hour without taking an outage? NovaTech, working with a Mid-Atlantic Utility, designed and packaged a solution into a small enclosure for retrofit at 69kV substations.
December 20, 2016
Bitronics has been sponsoring a team of three high school seniors at the Bethlehem Vo-Tech School in the SkillsUSA Competition and they are heading to Nationals!
April 26, 2016
These are the new features you have been asking for on the Bitronics 878 High Density I/O and now the new connector can be ordered for use on all P3x I/O modules….
April 18, 2016
With the rapid adoption of the IEC 61850 standard by many US-based utilities, Distributed Event Recorders are becoming easier to create. Bruce’s presentation explains why the application of fault recorders could…
February 17, 2016
70 Series Split Core Installation The first major installation of the M571 with the split core CT option was completed for a SCADA monitoring and disturbance recording application, in distribution substation cubicles. The flexible mounting…
October 03, 2012
70 Series Release Version 3.07 Firmware, Configurator, and Utilities CD were released in early November. Features include: Increased pre- and post-trigger times in the disturbance recorders. Corrected a minor issue…
December 19, 2011
Sound bites from the presentations given at 2016 DistribuTECH on SCADA, Cyber Security, 61850, and Systems and Services.
March 18, 2016
Almost half of NovaTech’s business is in Systems and Services including web page design, panel design, math and logic development, Orion configuration, and onsite installation and commissioning. Mark Matassa explains how our engineers can work with you to reduce project execution time at the 2016 DistribuTECH Conference and Exhibition in Orlando, Florida.
March 18, 2016
Bitronics Measurement and Event Recording products have been used throughout the US electric utilities and internationally in traditional and cutting-edge “Smart Grid” applications. The products have been made in Bethlehem, PA, USA since 1908 and continue to be the gold standard for reliability and innovation in the electric utility substation measurement market.
June 4, 2012
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