TS EN 50293/ EN 50293:2012 Standard
Electromagnetic compatibility - Product Standard for Road traffic signal systems
EN 50293 is Electromagnetic Compatibility (EMC) product family standard. Road traffic signal system product manufacturers design their products according to EN 50293 standard and have them tested (EMC Test). EN 50293 standard specifies the emission and immunity tests requirements for road traffic signal system apparatus.
Electromagnetic Compatibility (EMC) Tests:
Electromagnetic Compatibility Tests (EMC Test) are aimed to operate any electrical and electronic device or system without being affected by and affecting other devices or systems in the environment. EMC Tests are examined in 2 general categories as immunity and emission.
Emission Tests specified in EN 50293;
- Radiated Emission Test - CISPR 32 / EN 55032
- Conducted Emission Test - CISPR 32 / EN 55032
- Harmonics Test - EN 61000-3-2
- Flicker Test - EN 61000-3-3
Immunity Tests specified in CISPR 14-2;
- Electrostatic Discharge (ESD) Test - EN 61000-4-2
- Radiated Immunity Test - EN 61000-4-3
- Electrical Fast Transients / Burst Test - EN 61000-4-4
- Surge Testi - EN 61000-4-5
- Conducted Immunity Test - EN 61000-4-6
- Voltage Dips and Interruptions Test - EN 61000-4-11
Immunity Test Specifications
|
Ports |
EMC Test |
Test Specifications |
|
Mahfaza |
ESD IEC 61000-4-2 |
Contact: ±4 kV Air:±8 kV |
|
Radiated Immunity IEC 61000-4-3 |
80 MHz – 1 GHz (10 V/m) %80 AM – 1 kHz |
|
|
Radiated Immunity IEC 61000-4-3 |
60 A/m 50-60 Hz |
|
|
AC |
Voltage dips - Interruptions IEC 61000-4-11 |
EN 50556:2011, clasuse 4.5 |
|
Burst IEC 61000-4-4 |
1 kV (5/50 ns, 5 kHz) |
|
|
Surge IEC 61000-4-5 |
Line to line;1 kV Line to ground;2 kV |
|
|
Conducted Immunity IEC 61000-4-6 |
10 V (150 kHz to 80 MHz) |
|
|
DC |
Burst IEC 61000-4-4 |
1 kV (5/50 ns, 5 kHz) |
|
Surge IEC 61000-4-5 |
Line to line;0,5 kV Line to ground;1 kV |
|
|
Conducted Immunity IEC 61000-4-6 |
10 V (150 kHz to 80 MHz) |
Performance criteria
Performance criterion A;
No change shall be observable in the operation. The traffic system shall conform to the standards EN 50556, EN 12368 and EN 12675.
Performans criterion B;
There shall be no degradation of safety requirements. There shall be no alteration in the operating mode or of the stored data (Timings, fault logs etc.). It is acceptable for the signals to switch on or off for a period less than the maximum failure detection time. It is acceptable for an additional vehicle to be detected or for the presence of a vehicle not to be detected during the period of the disturbance.