UIC 541-04

Automatic Variable Load Brake Testing

This test defines specifications for automatic variable load braking systems that adjust braking force proportionally to the vehicle's loading condition, optimizing stopping distance and wheel adhesion. The standard covers the design, functionality, and performance requirements of automatic load-sensing brake control equipment fitted to freight and passenger trains. Testing verifies that braking force automatically adjusts across the range from empty to fully loaded conditions, enhancing safety and reducing wheel slide risk. Accreditation for this test is critical for manufacturers of brake control systems and railway operators ensuring consistent, safe braking performance regardless of train loading.

What it measures

  • Load-proportional braking force adjustment mechanisms
  • Response characteristics across loading range
  • Wheel adhesion optimization and anti-lock performance
  • System reliability and fail-safe functionality
  • Pressure modulation and control accuracy
🇩🇪 DIN EN 14198 🇬🇧 BS EN 14198 🇫🇷 NF EN 14198 🇮🇹 UNI EN 14198 🇪🇸 UNE EN 14198 🇳🇱 NEN EN 14198
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PMK - GmbH (Prüfen+Messen+Kalibrieren)

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DAkkS D-K-17519-01-01 Niestetal, DE
Parallelendmaße aus 0,5 mm Einstellringe aus Stahl * nach DIN EN ISO 3650:1999 Keramik * DIN EN ISO 3650:1999 + 3 more
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PROMESS Gesellschaft für Montage- und Prüfsysteme

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DAkkS D-K-21209-02-00 Berlin, DE
Railway brake — magnetic track brakes (U − Kraft (WPM) nur Vor-Ort-Kalibrierungen Kraft (WPM) 0,1 kN Vibration measuring instruments — test m + 3 more
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PTS - Institut für Fasern & Papier g

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PTW - Freiburg Physikalisch-Technische Werkstätten Pychlau

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Pachmann

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DAkkS D-ML-13345-01-00 Bayreuth, DE
EpCAM-positive Zellen (CD326) EpCAM-positive Tumorsphären EpCAM-positive Zellen human epidermal growth receptor 2 (Her-2/neu) + 2 more
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Partnerschaftspraxis für Laboratoriumsmedizin und Mikrobiologie

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Perschmann Calibration

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DAkkS D-K-15089-01-01 Braunschweig, DE
Parallelendmaße * 0,5 mm DIN EN ISO 3650:1999 > 100 mm Sonderquerschnitt (rund Parallelendmaße * > 100 mm + 3 more
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Pharmaserv GmbH Kalibrierlabor

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DAkkS D-K-18321-01-00 Marburg, DE
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Polytest Ingenieure

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Power Diagnostix Systems

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Praxis für Labormedizin, med. Thomas Müller

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Privatärztliche Gemeinschaft für Diagnostik Köln-Bonn

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Privatärztliche Laborgemeinschaft Köln

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ProfEC Ventus

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DAkkS D-PL-19142-01-00 Oldenburg, DE
IEC 61400-12 Ed.1 * IEC 61400-12-1 Ed.3 * IEC 61400-12-3 Ed.1 * IEC 61400-12-4 Ed.1 * IEC 61400-12-5 Ed.1 * + 3 more
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Prüfstelle für Betonstahl - Gallus Rehm

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DAkkS D-PL-18743-01-01 München, DE
ISO 15835-2 UNE-EN 10002-1 BS EN ISO 15630-1:2019 UNE-EN 10080 BS EN ISO 15630-3:2019 + 3 more
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QS-Grimm

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DAkkS D-K-15159-01-01 Gutach Schwarzwaldbahn, DE
Parallelendmaße * 0,5 mm DIN EN ISO 3650:1999 Zylindrische Normale 1 mm Innenzylinder * > 100 mm + 3 more
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Qopas

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DAkkS D-K-12048-01-00 Driedorf, DE
Koordinatenmessgeräte geräte mit einem Chorus, Help-PJM von DEA Hexagon Metrology S.p.A., Turin, I Associates EMS Products, ≤ 1500 mm + 3 more
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Questmed

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ISO 22679 ISO 7207-1 ISO 14243-1 ISO 14243-2 ISO 14243-3 + 3 more
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RIO

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DAkkS D-K-17376-01-00 Siegen, DE
Parallelendmaße * 0,5 mm DIN EN ISO 3650:1999 > 100 mm > 500 mm > 550 mm + 3 more
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RMA Mess- und Regeltechnik

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DAkkS D-K-20908-01-00 Rheinau, DE
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ROTA YOKOGAWA

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DAkkS D-K-17720-01-00 Wehr, DE
Masse m strömender − Durchfluss von Flüssigkeiten Durchfluss von 1) In den CMC sind die erweiterten Messu Massedurchfluss dm / dt + 3 more
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Reckmann

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DAkkS D-K-22441-01-00 Hagen, DE
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Robert Koch-Institut

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DAkkS D-ML-13113-01-01 Berlin, DE
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Rolf Langenscheid GmbH Waagensystemtechnik

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DAkkS D-K-21801-01-00 Lüdenscheid, DE
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Ruhr Lab

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ISO 13909-2 ISO 13909-3 ISO 13909-5 ISO 13909-7 ISO 13909-8 + 3 more
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Industries

Railway rolling stock manufacturers Brake control system suppliers Freight train operators Passenger rail services Railway certification and safety authorities

Related Standards

  • UIC 541-01 Railway brakes — Braking power
  • UIC 541-05 Railway brakes — Anti-slide device
  • EN 14198 Railway applications — Wheelsets and bogies — Safety requirements for thermal management

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