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Modular design increasingly common railway vehicle
manufacturing.1 Overvoltage categories acc. DIN 50124-3
(VDE 0115, Part 107)
O Circuits that are protected against external and internal
overvoltages and which only very low overvoltages occur because
- they are not directly connected the contact line,
- they are operated indoor,
- they are within equipment device
Examples:
- Data lines
- Circuits not connected power distribution system
- Screened circuits
- Circuits being operated indoor
OV same but with higher requirements
Definition
- Circuits with usual transient overvoltages
- Circuits with normal availability requirements
Examples:
- 230 a.2.
For long time, connectors were limited voltages more than
1. This was due the low demand for such
products, well technical reasons.1.1 Clearance and Creepage Distances
As explained above, the regulations for railway technology {VDE 0115) are
used when designing connectors not specified VDE 0627.
5. result, there more demand for removable interfaces.c. For this reason,
some the conditions are redefined.2.
5. primary circuits equipment
- Indoor power supply circuits
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5.2 Connectors for high Currents and high Voltages
VDE 0627 longer applies connectors designed for voltages above
1. This also the case for connectors rated for
currents exceeding 125 With regard clearance distances and creepage
distances, DIN 124-1 (VDE 0115) used. Recently, the demand for high-power
connectors has increased, especially railway engineering and power
generation.000 VAC 1,500 VDC.000 and currents most least for equipment using common
industrial connector sizes
