Page 304 - contactors_motor_protection_for_rolling_stock_application

Standards description

Fire and smoke protection standards EN 45545-1 defines the combination of the both criteria below, decisive
The design of rolling stock and control products used such as contactors, for the classification of the Hazard Level HL1 up to HL3:
shall incorporate the aim of limiting fire development and minimizing the – the operating categories of a train and how the train itself is concepted
smoke toxicity in case an ignition event occurs so that an acceptable – the types of environments depending on the length of tunnels
level of safety is achieved. In the event of a fire, passengers and staff will EN 45545-2 classifies control products in table 2 as listed products.
be able to escape from the fire and smoke unaided and be able to reach All products used under masses and an exposed area as defined below,
a place of safety.
can be evaluated with the grouping rules and guarantee an ample fire
In this regard, the key standards are the fire and smoke protection and smoke protection thanks to comprehensive measurements of
european standard EN 45545-2. oxygen index, density and opacity of smoke.
European standard EN 45545-2 classification Contactors, manual motor starters and overload relays reach under
EN 45545 has been developed from existing fire safety regulations for following conditions the highest hazard levels HL2 or HL3 for one
4 railway vehicles from the International Union of Railways (UIC) and different product or in group mounting:
European countries and specifies the reaction to fire and smoke performance – an exposed area of each product < 0.2 m²
requirements for materials and products used on railway vehicles. – grouped plastic materials compliant to criteria R22/24 for interior
grouped products and R23/R24 for exterior grouped products.
All products and accessories have been analyzed according to the
above standards.
Plastic material tables and certificates are available on request.

Train types Tunnel length Operating conceptions
N A D S
Standard vehicles Automatic vehicles 2 level vehicles Sleeping cars 2 levels or 1 level
without staff on board
1 < 1 km HL1 HL1 HL1 HL2
2 < 5 km HL2 HL2 HL2 HL2
3 > 5 km HL2 HL2 HL2 HL3
4 > 5 km no side evacuation HL3 HL3 HL3 HL3
For interior
Types of mass for grouped plastic material defined in an exposed surface < 0.2 m²
Global mass HL1 HL2 HL3
R22 EN ISO 4589-2 OI Oxygen content ≥ 28 % ≥ 28 % ≥ 32 %
EN ISO 5659-2: 25 kWm² D S max. ≤ 600 ≤ 300 ≤ 150
NF X 70-100-1 and -2: 600 °C CIT NLP ≤ 1.2 ≤ 0.9 ≤ 0.75
Remaining mass not R22 classified HL1 HL2 HL3
R24 ≤ 500 g EN ISO 4589-2 OI Oxygen content ≥ 28 % ≥ 28 % ≥ 32 %
Remaining mass unclassified HL1 HL2 HL3
< 100 g No requirements apply to the materials of this group.

For exterior
Types of mass for grouped plastic material defined in an exposed surface < 0.2 m²
Global mass HL1 HL2 HL3
R23 EN ISO 4589-2 OI Oxygen content ≥ 28 % ≥ 28 % ≥ 32 %
EN ISO 5659-2: 25 kWm² D S max. - ≤ 600 ≤ 300
NF X 70-100-1 and -2: 600 °C CIT NLP - ≤ 1.8 ≤ 1.5
Remaining mass not R23 classified HL1 HL2 HL3
R24 < 2000 g EN ISO 4589-2 OI Oxygen content ≥ 28 % ≥ 28 % ≥ 32 %
Remaining mass unclassified HL1 HL2 HL3
< 400 g No requirements apply to the materials of this group.

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