Schaltbau CO4 series changeover unit
Schaltbau CO4 high-voltage changeover unit for cross-border rail vehicles
High-voltage changeover unit CO4 series
High-voltage changeover units of the CO4 series are switching devices for load-free configuration of electrical loads. The new 6-position devices are now more powerful – the cam switchgear configures faster and the switching chambers can carry higher currents. Changeover devices are needed for voltage configuration for railway vehicles in cross-border traffic with changing supply voltages. Here, the changeover unit is the link between the train busbar and the electrical consumers, e.g. power supply systems and heating registers.
Features
Wide power range
UIC voltages up to 3,600 volts, with reinforced insulation 5,000 volts; continuous thermal currents up to 100 amps. Load-free adaptation of electrical configurations to
different train busbar systems according to UIC 550.
6 switching positions
6 control inputs for 6 pre-configured
positions, controlled via a motor-operated cam controller.
Modularity
Cam switchgear with 2 to 10 switching chambers* including ready-to-use connection configuration; customerspecific defined switching programmes as well as many switching programmes of European railway operators available.
* others upon request
Standards
Tested to railway standard EN 60077-1,EN 60077-2,
UIC 550 as well as EN 50124-1 and EN 50163.
Specifications
Switching gear
| Number of switching chambers | 2-4-6-8-10, others upon request |
| Control | 6 control inputs, 6 pre-configured positions |
| Drive | Cam gear, electric motor |
Contact system per switching chamber
| Type of voltage | DC, AC (f ≥ 60 Hz) |
| Nominal voltage Un | 3,000 V |
| Rated operating voltage Ue | 3,600 V @ PD3, OV3 5,000 V @ PD2, OV2 |
| Rated insulation voltage UNm | 3,600 V @ PD3, OV3 5,000 V @ PD2, OV2 |
| Rated impulse withstand voltage UNi | 25 kV |
| Pollution degree | PD2, PD3 |
| Overvoltage category | OV2, OV3 |
| Conv. thermal current Ith | 100 A @ 70° C |
Drive
| Control voltage US | 24 … 110 V DC |
| Control voltage tolerance | 0.7 … 1.25 x Us |
| Power dissipation | 20 W during changeover operation, otherwise none |
General data
| Vibration, Shock | Category 1, class B |
| Mechanical endurance | 125,000 operating cycles |
| Mounting orientation | horizontal, vertical (do not mount upside down) |
| Temperature range | –40° C … +85° C |
| Weight | approx. 9.5 kg, device with 10 switching chambers |
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