Surge protector sits directly on transformer
With an ever-growing number of double decker trains, high products on rooftops can create challenges with tunnels and bridges. Roof space on trains in general comes at a premium as more and more components need to be placed on rooftops, several of them requiring free space around them as well.
The RSTI 68 surge protector can be placed directly on the transformer but also at the rear side of the high voltage (HV) cable assembly that connects to the transformer. The product fits in a sealed HV system, giving maximum design freedom. For trains using the new Lopro circuit breaker, this secondary surge arrester can even be placed directly on the circuit breaker, creating even more configuration freedom in the HV system.
The surge protector is fully tested against shock and vibration, and meets the fire and smoke norms of EN45545-2. The short circuit current is 20kA and the product is tested for 15kV and 25kV AC track systems.