Electronic Track Relay
ELECTRONIC TRACK RELAY
Electronic TR (Track Relay) has been realized in two different typologies: one for US&S and one for GRS.
It’s a fully electronic device, with no-rebounds output contacts and protected against extra tensions. Its is characterized by its swiftness of intervention, sufficient to secure a perfect code division thus allowing a very good on-off ratio maintenance even for repeated CdB.
Since the same characteristics of input resistance, voltage and excitation current of mechanical relays have been maintained, further calibrations of track circuits are no more necessary.
They are thus perfectly interchangeable to replace original relays.
ELECTRONIC TR US&S TYPE
It’s a fully electronically product, realized in two versions and is entirely interchangeable with each version it is supposed to replace.
The coupling to the match plate is secured by a releasing mechanism. Pull strongly to extract it, (about 5 kg). The mechanical codification is the same as the model to be replaced. A pair of flashing red/green LED with the code indicates the good running of TR.
ELECTRONIC TR GRS TYPE
The Kit supplied with the TR used for the fixation to the match plate matches entirely the same existing fixation.
Power consumption of Eletctronic TR is rather low in order not to load the RE exceedingly.
Eletctronic TR is interchangeable with traditional TR, both as coil and contacts lay-out and mechanically.
The single variation is the necessity to connect the supply negative. Dimensions, contacts lay-out and mechanical codification are totally identical to those of US&S and GRS relays, with characteristics of static-type contacts, equal o superior with no-rebounds and unnecessary maintenance advantages.
USE AND MAINTENANCE
Eletctronic TR doesn’t need any periodical maintenance. Internal protections and quality of electronic components are adequate to guarantee an ongoing working over the years without any maintenance
The calculated theoretical life of Eletctronic TR is spanning over 20 years, according to the Mil Standard Norms