Photo: On site Radiated emissions testing using active loop antenna
Train and Railway EMC testing, compliance and approvals. The EN 50121-x sets out a framework for managing EMC for railways. EN 50121-x series also specifies the limits of emissions and levels of immunity testing that is applicable to each component and the railway system as a whole within the boundaries of the railway itself and also to the outside world. This to try ensure that the when integration of new systems occurs that they are ‘fit for purpose’ in addition to complying with the appropriate EMC directive.
The railway standards include both emissions and immunity testing. Some of the emissions testing includes the basic Radiated emissions (electric field) performed on a test site, and also conducted emissions on the traction AC ports, traction DC ports, Auxiliary a.c. or d.c. power ports, Battery referenced ports, Process measurement and control ports.
The immunity testing usually consists of relatively higher applied stress test levels compared to consumer product testing due to the harsh intended electromagnetic and transient environment of the railway. Immunity testing includes testing such as Radio-frequency common mode, Fast transients, surges, Radio-frequency electromagnetic field. Amplitude modulated, Radio-frequency electromagnetic field, from digital mobile telephones and ESD.
EMC Bayswater laboratory Train and Railway EMC Testing capability
EN 50121-3-1 Railway Applications – Electromagnetic Compatibility – Part 3-1: Rolling Stock – Train and complete vehicle
EN 50121-3-2 (NATA accredited) Railway Applications – Electromagnetic Compatibility – Part 3-2: Rolling stock. Apparatus
EN 50121-4 (NATA accredited) Railway Applications – Electromagnetic Compatibility – Part 4: Emissions and immunity of the signalling and telecommunications apparatus
EN 50155 (NATA accredited to Clauses 5.4 and 5.5) Railway Applications – Electronic equipment used on rolling stock.
We can test rolling stock apparatus here in the laboratory or test trains and rolling stock on site anywhere in Australia or Australasia. Please view our accredited train and railway EMC testing scope by following the link.
Useful and interesting Train and Railway EMC Testing article