BS EN 50526-3:2016

What is BS EN 50526-3 - Application guide for D.C. surge arresters and voltage limiting devices about?  

BS EN 50526 is a European standard that discusses D.C. surge arresters and voltage limiting devices for railways. BS EN 50526-3 provides for the application guide to ensure the selection and proper installation of D.C. surge arresters and voltage limiting devices. 

Application Guide under BS EN 50526-3 supports the European Standards EN 50526-1 and EN 50526-2. 

BS EN 50526-3 is the third part of a multi-part series that guides on the following subjects: 

• The selection and installation of surge arresters 
• The selection and installation of voltage limiting devices such as VLD-O and VLD-F 
• The arrangement of the surge arresters and VLDs. 

Because of differences in the established, proven methods, electric traction systems of nominal voltage D.C. 600 V – D.C. 750 V are treated separately from the systems at higher nominal voltages. 

Note:  BS EN 50526-3 only applies to D.C. electrified traction systems. 

Who is BS EN 50526-3 - Application guide for D.C. surge arresters and voltage limiting devices for? 

BS EN 50526-3 on the application guide for D.C. surge arresters and voltage limiting devices for railways is useful for: 

• D.C. surge arresters and voltage limiting devices manufacturers 
• Test centres 
• Regulatory authorities 

Why should you use BS EN 50526-3 - Application guide for D.C. surge arresters and voltage limiting devices? 

Voltage limiting devices are used to prevent impermissible touch voltages in D.C. traction systems in normal operations and in fault conditions by bonding the return circuit of D.C. railways stem to the earthing system or the exposed conductive parts. 

A surge arrester is a protective device for limiting voltage on equipment by discharging or bypassing surge current. It prevents continuous flow from current to ground and it can repeat these functions as specified per ANSI standards C62.11. 

BS EN 50526-3 guideline assists you with general considerations, internal overvoltage, selection of VLD-F or VLD-O, the guideline for surge arresters, electrical characteristics, selection of continuous operating voltage, the continuous operating voltage for arresters A1, the continuous operating voltage for arresters a2, the procedure to select an a1 arrester, the procedure to select an A2 arrester, the guideline for VLDs, metros with a conductor rail, recommended characteristics of VLDs, further considerations, and more for D.C. surge arresters and voltage limiting devices for railways. 

With compliance and obedience to BS EN 50526-3, you can efficiently select and install D.C. surge arresters and voltage limiting devices.