2026-09-21 · KeXinMaterials 編集チーム
EN 50155 Bahnelektronik + Schutzkoffer B2B-Compliance-Leitfaden
EN 50155 "Bahnanwendungen - Elektronische Geräte auf Schienenfahrzeugen" ist der europäische Standard für elektronische Ausrüstung auf Zügen + Straßenbahnen + U-Bahnen + Lokomotiven. Kombiniert mit EN 50121-3-2 (EMV) + EN 61373 (Vibration + Stoß) + EN 45545 (Brandschutz).
EN 50155 Scope + Environmental Tests
EN 50155 covers electronic equipment on rolling stock. Current revision EN 50155:2017 + A1:2019. Comprehensive environmental + EMC + safety tests.
EN 50155:2017 + A1:2019: "Railway applications - Electronic equipment used on rolling stock". CENELEC TC 9X. Current revision.
Scope: Electronic equipment on rail vehicles (trains, metros, trams, locomotives). Includes sensors, control electronics, communication, signaling, power conversion.
EN 50155 environment: -40 to +85°C operating temperature (Class OT1 to OT4). Humidity 75% RH non-condensing. Altitude 1400m above sea level (Class A2 - 5500m for mountain).
EN 50155 power supply: 24V DC, 36V DC, 48V DC, 72V DC, 96V DC, 110V DC. Nominal + variations per EN 50155 Table 4.
EN 50155 transient tests: Surges per EN 50121-3-2 + EN 50155 Section 7.2.6. ESD per EN 61000-4-2.
EN 50155 reliability: MTBF (Mean Time Between Failures) calculation per EN 61709 / Telcordia SR-332.
Geographic: EU standard (CENELEC). Adopted globally including China + Russia. Similar standards: IEC 60571 (railway rolling stock), AAR S-9401 (US rail), IEC 62498 (environmental), TB/T 3021 (China rail).
IEC 60571 vs EN 50155: IEC 60571 is international equivalent of EN 50155. Similar scope. EN 50155 + IEC 60571 typically cited together.
EN 50121-3-2: EMC for rolling stock. Emissions + immunity per EN 61000-4 series.
EN 61373: Railway applications - Shock and vibration tests. Class A (body mounted) + Class B (bogie mounted). Random + shock.
EN 45545-2: Railway fire safety. HL1 to HL3 hazard levels. Material flame + smoke + toxicity.
B2B relevance: For protective cases containing railway electronics (sensors + control + comms), require EN 50155 + EN 50121-3-2 + EN 61373 + EN 45545 compliance.
EN 50155 Operating Temperature + Power Tests
EN 50155 specifies 4 operating temperature classes + power supply variations. Detailed test methods.
Operating temperature classes: Class OT1 (-25 to +55°C) + Class OT2 (-40 to +70°C) + Class OT3 (-25 to +70°C) + Class OT4 (-40 to +85°C).
OT1 standard for in-cabin equipment. OT2 + OT4 for outdoor equipment. OT3 for underframe equipment.
Power supply nominal: 24V, 36V, 48V, 72V, 96V, 110V DC. Battery + alternator + charger powered.
Power supply variation: 0.7-1.25x nominal (per EN 50155 Section 7.2.4). E.g., 110V DC nominal = 77V to 137.5V variation.
Power supply interruption: 10ms to 100ms without functional interruption per EN 50155 Section 7.2.5.
Power supply surge: 1.4x nominal for 1 second (per EN 50155 Section 7.2.7).
Overvoltage protection: Required. Auto-recovery or fuse-protected.
Reverse polarity protection: Required for portable / handheld equipment.
ESD immunity: 6kV contact + 8kV air discharge per EN 61000-4-2.
Fast transient burst: 2kV per EN 61000-4-4.
Surge: 1kV / 2kV per EN 61000-4-5.
Heat dissipation: Equipment must dissipate internally generated heat without exceeding surface temp limits.
Cold start: Equipment must function within 30 seconds of cold start at minimum operating temp.
Seismic + vibration: Optional per EN 50125-3 (environmental conditions). Different from EN 61373.
B2B recommendation: For railway protective cases, specify EN 50155 OT2 + EN 50121-3-2 EMC + EN 61373 vibration Class A (body mounted).
EN 61373 Vibration + Shock Tests
EN 61373 specifies vibration + shock testing for railway equipment. Class A (body) vs Class B (bogie) mounting.
EN 61373: "Railway applications - Rolling stock equipment - Shock and vibration tests". CENELEC.
Class A: Body-mounted equipment. Lighter vibration. Class B bogie-mounted (wheel-mounted / motor-mounted). Heavier vibration.
Class A (body): Random vibration 0.2 g²/Hz from 5-20 Hz + -3 dB/oct from 20-200 Hz. Total RMS 0.225 g.
Class B (bogie): Random vibration 0.1 g²/Hz from 5-20 Hz + 1 g²/Hz from 20-500 Hz. Total RMS 5.35 g.
Shock test: Half-sine 5g 50ms (Class A) + 15g 11ms (Class B). 3 shocks per axis.
Long-life functional test: 5 hours per axis, total 30 hours. Equipment must operate without failure during + after test.
Long-life endurance test: 5 hours per axis, higher amplitude. Equipment must withstand without structural failure.
Resonance search: Sweep 5-500 Hz at 1 octave/min. Identify resonance frequencies + verify equipment survives resonance.
Operational vibration: Class A 0.225 g RMS for 5 hours per axis. Equipment operates during test.
Endurance vibration: Class A 0.7 g RMS for 5 hours per axis. Equipment does not operate during test.
Operational shock: Class A 5g 50ms 3 shocks per axis. Equipment operates during test.
Endurance shock: Class A 15g 11ms 3 shocks per axis. Equipment does not operate during test.
After-test inspection: No damage to enclosure + no broken parts + no loose fasteners + equipment still functional.
B2B recommendation: For railway cases, specify EN 61373 Class A or Class B per installation location.
EN 45545 Fire Safety + EN 50121-3-2 EMC
EN 45545-2 fire safety + EN 50121-3-2 EMC for railway. Both required for railway electronics + cases.
EN 45545-2:2013 + A1:2015: "Railway applications - Fire protection on railway vehicles - Part 2: Requirements for fire behaviour of materials and components".
Hazard levels: HL1 (standard, metro / light rail / freight) + HL2 (intercity / regional / sleeper) + HL3 (high-speed / tunnel / underground). Higher HL = stricter requirements.
HL3 requirements: Material limited oxygen index (LOI) >= 35% + smoke density (Ds, max) <= 150 + heat release rate (MAHRE) <= 60 kW/m².
Test methods: Cone calorimeter (ISO 5660) for heat release + smoke density. Limiting oxygen index per EN ISO 4589-2.
Material classification: R1 (compliant HL1) + R2 (compliant HL2) + R3 (compliant HL3) per EN 45545-2 Annex A.
Internal material: Cases for HL3 require all internal material (PCB, wires, fasteners, etc.) to be R3-rated.
Polymer materials: Many plastics require flame retardant additives (halogenated + non-halogenated). New R3 materials include polycarbonate + polyetheretherketone (PEEK) + certain polyamides.
EN 50121-3-2: EMC for rolling stock. Conducted + radiated emissions + immunity per EN 61000-4 series.
EN 50121-3-2 Table 1: Conducted emissions limits per port (power + signal). 9 kHz - 30 MHz.
EN 50121-3-2 Table 3: Ensulated fundamental + harmonics limits per EN 61000-3-12.
EN 50121-3-2 immunity: ESD per EN 61000-4-2 (6 kV contact + 8 kV air) + fast transient per EN 61000-4-4 (2 kV) + surge per EN 61000-4-5 (1 kV/2 kV) + radiated RF per EN 61000-4-3 (10 V/m 80 MHz-2.5 GHz).
Test lab: EMC testing per EN 50121-3-2 requires accredited lab with railway-specific expertise.
Common B2B mistakes: (1) Missing EN 45545 fire rating documentation. (2) EN 61000-4 series tests without EN 50121-3-2 wrapper. (3) Class A vibration only (need Class B for bogie-mounted).
B2B recommendation: For railway cases, specify EN 50155 + EN 50121-3-2 EMC + EN 61373 vibration + EN 45545-2 HL3 fire safety (for high-speed/tunnel/underground).
Railway Industry Compliance + B2B Procurement
Railway industry compliance + global adoption + procurement workflow.
Railway operators in EU: Deutsche Bahn + SNCF + SNCF + Trenitalia + Renfe + PKP + NS + SBB + Eurostar. Major EU rail operators require EN 50155 compliance.
Railway operators in Asia: JR East / JR West (Japan) + China Railway + KORAIL + Taiwan High Speed Rail + MTR (Hong Kong) + BTS (Thailand) + SMRT (Singapore).
Railway operators in Americas: Amtrak (US) + VIA Rail (Canada) + Brightline (US) + Caltrain (US).
Railway rolling stock manufacturers: Alstom + Siemens Mobility + CRRC + Bombardier (Alstom) + Stadler Rail + Hitachi Rail + Talgo + CAF + Hyundai Rotem + Kawasaki Heavy Industries.
Approval process: Rolling stock operator approves equipment manufacturer + equipment supplier. Often multi-stage: type test + routine test + acceptance test.
Type test: Comprehensive test of prototype equipment. Verifies compliance with all applicable standards. Per EN 50155 Section 7.
Routine test: Test of each production unit. Verifies basic functionality. Per EN 50155 Section 9.
Acceptance test: Test of equipment in actual installation on rolling stock. Verifies integration with train systems.
B2B procurement workflow: (1) Identify rolling stock operator + applicable standards. (2) Specify EN 50155 class + EN 50121-3-2 EMC + EN 61373 vibration + EN 45545-2 fire. (3) Verify supplier accredited testing lab + recent test report. (4) Type test + routine test agreement. (5) Approvals per operator requirement.
Approval documentation: Type test report + routine test procedure + EMC compliance + fire safety + reliability analysis (MTBF) + design review + manufacturing process audit.
Common approval docs: UNIFE / UIC + ERA documentation for cross-border rail. EU Technical Specification for Interoperability (TSI).
Cost: EN 50155 testing EUR 30,000-100,000 per equipment + EN 50121-3-2 EMC EUR 15,000-50,000 + EN 61373 vibration EUR 10,000-30,000 + EN 45545-2 fire EUR 5,000-20,000 = EUR 60,000-200,000 total.
B2B recommendation: For railway protective cases, require EN 50155 + EN 50121-3-2 + EN 61373 + EN 45545-2 + supplier accredited testing lab + recent test report + rolling stock operator approval.
重要なポイント
- EN 50155:2017 + A1:2019 deckt Umwelt + Strom + EMV für Bahnfahrzeugelektronik ab.
- 4 Temperaturklassen OT1-OT4 + 4 Montageorte + 4 Stromversorgungsvarianten gemäß EN 50155 Abschnitt 7.
- EN 61373 Vibration Klasse A (Karosserie, 0,225 g RMS) vs Klasse B (Fahrwerk, 5,35 g RMS) je nach Montageort.
- EN 45545-2 Brandschutz HL1-HL3 + Material R1/R2/R3 Klassifizierung. HL3 für Hochgeschwindigkeit/Tunnel/Untergrund.
- B2B-Empfehlung: Für Bahnschutzkoffer EN 50155 + EN 50121-3-2 EMV + EN 61373 + EN 45545-2 + akkreditiertes Lieferanten-Testlabor + aktuellen Testbericht verlangen.
よくある質問
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