BBA EL 71
| BBA EL 71 | |
|---|---|
| Manufacturer: | Operation for mining equipment Aue (BBA) |
| Year of construction (s): | 1971-1989 |
| Axis formula : | (Bo + Bo) + (Bo + Bo) |
| Type : | Battery loc |
| Genre : | Mine locomotive |
| Gauge : | 600 mm |
| Length over buffers: | 7910 mm / 8180 mm |
| Height: | 1440 mm / 1470 mm |
| Width: | 780 mm |
| Fixed wheelbase: | 600 mm / 630 mm |
| Smallest bef. Radius: | 5 m |
| Service mass: | 10.1 t / 10.5 t |
| Top speed: | 6 km / h / 10 km / h |
| Hourly output : | 16.8 kW |
| Starting tractive effort: | 2.1 kN / 3.2 kN |
| Capacity: | 4 × 250 Ah / 4 × 280 Ah |
| Driving wheel diameter: | 420/500 mm |
| Drive battery: | 78 v |
| Number of traction motors: | 8th |
| Brake: | el. drag brake |
| Control: | Manual drive switch |
The series EL 71 of the operation for mining equipment Aue (BBA) indicates a Akkumulatorlokomotive , which was built from 1971 to 1989. It was built for the mining operations of SDAG Wismut .
development
The EL 71 is an EL 61 with the B 660 that has been extended by two more battery packs . The background for the development was to achieve an increase in performance under the same operating conditions. When building the EL 71, locomotives from the EL 61 series as well as the B 660 series were used. That is why there are different dimensions and data without different type designations.
Constructive features
mechanics
The four drive units had an outer frame, which was the supporting structure. The driver's cab was hung as a litter between the battery tenders. It was carried out with a welded frame. The locomotive had a manual spindle brake as a parking brake. The braking force was transmitted to the drive units via a cable.
Electrics
Each of the eight axles was driven by a drive motor . The four batteries as well as the two DC motors in series in a tender are connected in series. When starting up, the two motor groups are first connected in series and then in parallel via resistors. The travel and braking levels can be selected with the cam switch.
literature
- Holger Neumann, Sven Kästner: Narrow-gauge industrial locomotives of the GDR . Herdam, Gernrode 2008, ISBN 978-3-933178-22-0 .