Mainline SGNLR – Spark Gap & Non Linear Resistor Cubicle – 6kA or 9kA rms for 0.2s
SGNLR – Spark Gap & Non Linear Resistor Cubicle – 6kA or 9kA rms for 0.2s NetworkRail
Where there is 25kV overhead lines and 750V DC, the non-linear resistors provide a path back to source for currents flowing in short circuits of the 25kV AC overhead lines, while limiting the current which flows during the normal operation of the railway.
The spark gap device triggers to limit earth voltage to a safe level.
The resistors limit the running rail touch voltage to within safe levels.
This restricts the risk of stray DC currents.
Non Linear Ceramic Disc Resistor assemblies
(This must be matched to system requirements)
Protected for external use
Anti-Graffiti Paint Finish (RT98-RT/CE/S/039)
Conformance to BSEN 50122
Independently type tested to Network Rail Specification
Cable entry from below via insulating gland plates
Incoming & Outgoing 2 x 95mm2 XPLE Copper Cable