Product category:
Electromechanical Components
News Release from: Tyco Electronics UK | Subject: Star Point Relay
Edited by the Electronicstalk Editorial
Team on 21 September 2005
Relay realises safe automotive turnoff
The Star Point Relay (SPR) is designed for switching off three-phase-motors in automotive applications.
The Star Point Relay (SPR) is designed for switching off three-phase-motors in automotive applications With electrical drives and actuators becoming increasingly important in modern automobiles, for example as an alternative to the hydraulic steering assistance, it is important that they can be safely switched off in case of a short circuit or malfunction
This article was originally published on Electronicstalk on 1 Jun 2004 at 8.00am (UK)
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Relay ensures X-by-wire system safety
The SPR Star Point relay is specially designed for disconnecting electric power steering or X-by-wire motor applications in the event of a short circuit or malfunction.
The three-contact-bridge making SPR relay is available for 12 and 42V applications and characterised by a low contact resistance (typically less than 1.0mohm per path for load current 10A after fritting) and a high current carrying capacity together with little space requirement.
Switch-off peak overcurrents are up to 200A (four up to 10 cycles) in 12V and up to 60A in 42V power nets.
Resistant against high ambient temperature up to 125C, the device guarantees symmetric current paths for each phase and ensures complete disconnection of the three star-point phases.
The monostable SPR relay is actuated by a 150 or 97ohm coil (12V) and uses fine grain silver-nickel contacts.
It features a maximum pull-in voltage of 6.2V (150ohm coil) or 5.0V (97ohm coil) at 23C and is sealed to IP67 against dust and ingress of dirt. Request a free brochure from Tyco Electronics UK ...
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