LEW EL 7
| LEW EL 7 | |
|---|---|
| Number: | 2 |
| Manufacturer: | LEW |
| Year of construction (s): | 1953-1956 |
| Axis formula : | Bo |
| Type : | Battery loc |
| Genre : | Mine locomotive |
| Gauge : | 600-900 mm |
| Length over buffers: | 6000 mm |
| Height: | 1400 mm |
| Width: | 1100 mm |
| Fixed wheelbase: | 1500 mm |
| Smallest bef. Radius: | 12 m |
| Service mass: | 11 t |
| Top speed: | 25 km / h |
| Hourly output : | 34 kW |
| Starting tractive effort: | 19.6 kN |
| Capacity: | 2 × 455 Ah |
| Driving wheel diameter: | 650 mm |
| Drive battery: | 112 V |
| Number of traction motors: | 2 |
| Type of speed switch: | Cam switch |
| Brake: | el. drag brake |
| Control: | Manual drive switch |
The EL 7 series of the LEW Hennigsdorf is a battery locomotive that was built in two copies from 1953 to 1956. The locomotive built in 1953 was delivered to the Ehrenfriedersdorf tin mine and the locomotive built in 1956 was exported to Poland .
development
Only two copies of this mine locomotive were built in 1953 and 1956. It was the largest battery locomotive from GDR production.
Constructive features
mechanics
The locomotive had an outer frame as a supporting structure and a terminal cab. The locomotive had an escort stand at the head end. It was carried out with a welded frame. In its construction it represented an LEW EL 8 extended by a battery box. As a parking brake, it had a hand spindle brake.
Electrics
The battery voltage was 112 V with a capacity of 2 × 455 Ah. Each axis was driven by a drive motor in the cradle bearing . The speed steps can be selected with the cam switch. The two drive motors could be connected to the accumulators in parallel or in series, which resulted in the basic speed steps, further intermediate speed steps could be set by means of field weakening .
The locomotive exported to Poland was designed to be firedamp proof .
literature
- Jürgen Becker, Peter Garbe: Rail vehicles from Hennigsdorf near Berlin . tape II . Neddermeyer, Berlin 2006, ISBN 3-933254-72-8 .