High Power Resistors Target HEVs
Optimised design reduces field failures caused by surge currents in high-power applications
Weybridge, UK, 05 February 2013: TT electronics has introduced the WPRT Series of Wirewound Power Radial Terminal Resistors, qualified to AEC-Q200 and designed to address the specific requirements of high power applications including Hybrid Electric Vehicles (HEVs).
With the introduction of the WPRT Series, TT electronics now offers the industry’s widest range of ratings and configurations. This new resistor family is constructed from a high purity ceramic rod with force-fit end-caps, over which is wound a wire element. This is then placed within a ceramic case using fireproof insulation cement. As a result, the resistors are totally flameproof under specified temperature and overload conditions.
The unique design has been optimised for its surge performance, making it ideal for electric vehicles and motor drives. Manufactured to the highest tolerance, the WPRT Series also improves assembly, as it fits, perfectly, into automotive protective mouldings.
“The WPRT Series targets a specific need in the industrial, automotive and energy sectors,” commented Stephen Oxley, senior applications engineer at TT electronics. “By developing the widest range of power resistors in this class, TT electronics is demonstrating its commitment to supporting customers’ energy efficient designs whilst removing the risk, cost and complexity of developing a bespoke power resistor solution.”
The WPRT Series can be used in HEV pre-charge and BDU discharge applications, as well as protecting motors from inrush current. Its surge-protection design means it is also suitable for UPS systems.
The range comprises six power ratings; from 10W to 50W, with a maximum of 250W overload withstand for the WPRT50 (50W) range. Availability conforms to E24 standard resistor values.
The full range of WPRT resistors is available globally from TT electronics’ distribution channel partners:
Premier Farnell: http://uk.farnell.com/jsp/search/productListing.jsp?SKUS=2251100,2251101,2251102,2251104,2251105,2251106,2251107,2251108,2251109,2251110,2251111,2251112,2251113,2251114,2251116,2251117,2251118
For further information and data sheet downloads please visit: http://www.welwyn-tt.com/pdf/datasheet/WPRT.pdf or contact TT electronics’ Regional Sales Office:
To view the wider TT electronics portfolio visit the Technology Showcase at: http://technology.ttelectronics.com/
About TT electronics PLC
TT electronics plc is a focused, global electronics group supplying leading manufacturers in the defence, aerospace, medical, transportation, energy and industrial markets. The Group has three divisions: Components, Sensors and Integrated Manufacturing Services, each delivering technology, products and services to customers in target markets worldwide. TT electronics plc operates from headquarters based in Weybridge, Surrey, with more than 20 global manufacturing locations and more than 3,000 employees worldwide.
Liz Blair, Marketing Manager, TT electronics plc, Welwyn Electronics Park, Bedlington, Northumberland, NE22 7AA UK.
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