ZH1800.024.0.S
Flat battery power supply ZH 1800
Power is supplied to passenger coaches from the locomotive via the train line, a cable running the length of the train. Static onboard three-phase AC inverters transform kilo voltages (to UIC 550) into the desired load voltages. Since the controls of the inverters cannot be powered by the high voltage supply, the control voltage necessary for operating the inverters must be provided by a vehicle battery.
The problem that arises is that many other loads such as the lighting of the train are being supplied by the vehicle battery, too. Normally, the battery gets charged by means of the train's power supply equipment. During downtimes, however, this is not possible. Supplying the many other loads with energy will result in considerable strain of the battery and often deep or total discharge.
Consequently, when the train starts running again and its power supply equipment is expected to do so, too, the static inverters cannot return to operation because of a flat vehicle battery that can no longer provide the necessary control voltage.
A Flat Battery Power Supply of Schaltbau is the solution to this problem. For, in the event of a flat battery, it will draw the initial current directly from the 1 to 3 kV traction voltage of the train line and convert it to the low-voltage startup power required for the inverter control circuit. It takes about 3 (cycles) x 3 minutes for the output to come up to full voltage. Time enough for the power supply equipment of the train to start operating again and for the vehicle battery to start recharging (see schematic on page 4).
- Control voltage supplied directly from train line
- Supply voltage for controls provided from train line
- Suitable for use with all standard UIC voltages
- Operating in different main-line electrification systems
- Suitable for cross-border train operation
- High operational availability
- No unscheduled maintenance due to flat battery
- No backup batteries for uninterruptible power supplyrequired
- Failure-free operation and supply with rolling stock
- No cancellation of train service because of flat batteries
Technical Data
| Input voltage to UIC 550 |
1 kV 16 2/3 Hz ... 60 Hz
|
| Output voltage |
24 V DC ± 1,5 %
|
| Output current Omax |
13.5 A
|
| Total power (3*3min cycle) |
320 W (without derating)
|
| Switch ON Voltage |
< 865 Vs und > 1800 Vs
|
| Switch OFF Voltage |
< 750 Vs und > 2300 Vs
|
| Protection |
short circuit / thermal / overload
|
| Relay output |
at UO >18 V contact bridged to -UO
|
| Transient time |
3 msec
|
| Efficiency load max. / 50% partial load |
> 80% / > 82%
|
| Temperature Ta permanent/ for 10 min / storage/ short time |
-25°C ... +70°C / -40°C ... +85°C / -40°C ... +50% / 90°C
|
| Dimensions (L x D x H) mm |
350 x 338 x 42,5
|
| Weight |
4,2 kg
|
|
|
More information
Features
|
Products 
return
top
print