BS EN 50702:2021 pdf download.Railway applications — Rolling stock — Conductor rail current collectors (shoegear): Characteristics and tests.
5 Technical requirements 5.1 General All general characteristics are given in the customer specifications. Unless otherwise specified, environmental conditions are defined in EN 50125-1:2014. The category of environment shall be specified by the customer. 5.2 Gauge The current collector in all positions shall be inside the specified gauge which is provided by the customer. 5.3 Working range of the current collector The customer specification shall state the values for the working range (distance and angle). 5.4 Electrical values The supply voltages of traction systems are specified in EN 50163:2004. The customer specifications shall also state the duration and values of the exceptional voltages for the current collector operation. Values defined in EN 50163:2004, 3.14 to 3.18 shall be given in the customer specifications. 5.5 Force requirements Static contact forces measured during raising and lowering of the collector shoe shall lie within the boundaries defined in the customer specification. 5.6 Collector shoe The customer specification shall state the material of the collector shoe. Requirements for special collector shoe shapes shall be specified by the customer.
5.7 Operating system The operating system shall be specified by the customer (pneumatic, hydraulic, electric and/or mechanical actuated). The operation system shall be designed such that the collector shoe can be disconnected from the conductor rail within 2 s for preventing electrical flashes. 5.8 Weak link If required in the customer specification, a weak link shall allow a rupture of the collector shoe holder or collector shoe in the event of a collision. 5.9 Current collector mass and force in the bogie The supplier shall specify the mass of the current collector and the maximum force at every fixing point. Additionally, the supplier shall specify all relevant parameters to enable the calculation of the maximum efforts at every fixing point. 5.10 Protection against corrosion The requirements for the corrosion protection application and the type of corrosion protection shall be given in the customer specification.BS EN 50702 pdf download.