BS EN 50526 is a European standard on railway applications that discusses D.C. surge arresters and voltage limiting devices. BS EN 50526-2 provides the best industry guidance on voltage limiting devices to manufacture efficient voltage limiting devices for use in D.C. traction systems in railways.
BS EN 50526-2 is the second part of a multi-part series that applies to Voltage Limiting Devices (VLDs) to be applied in D.C. traction systems to comply with protective provisions against electric shock from D.C. mixed A.C. – D.C. voltages, by the EN 50122 series, taking into account stray current provisions.
VLDs operate in such a way as to connect the track return circuit of D.C. railway systems to the earthing system or conductive parts within the overhead contact line zone or current collector zone.
BS EN 50526-2 on guidance on voltage limiting devices for use in D.C. traction systems is relevant to:
Voltage limiting devices are the devices that are used to prevent impermissible touch voltages in DC traction systems in normal operations and fault conditions by bonding the return circuit of a DC railway system to the earthing system or the exposed conductive parts.
BS EN 50526-2 provides you with the service requirements, minimum requirements, normal outdoor service conditions, normal indoor service conditions, abnormal service conditions, additional requirements, type tests and procedures.
This assists in manufacturing efficient voltage limiting devices that are durable and of high quality.
With compliance and obedience to BS EN 50526-2, you can enhance the efficacy and performance of voltage limiting devices and manufacture a standardised product for effective use in D.C. traction systems in railways.
EN 50526-2:2014