Mine trolley locomotives with electric drive
Mine trolley locomotives are designed for the horizontal rail track haulage in mines, for moist and dusty enviroment without explosion hazard of coal dust and natural gas.
Locomotives are driven by two asynchronous electric motors with independent cooling and with speed regulation by frequency converter that guarantees both steady drive and braking. Braking is organised by two independent braking systems for both axles, electrodynamic brake – by electro motors and mechanical double circuit brake, directly on running wheel. The locomotive has one lockable cabin with view and steering in both directions.
| Type | ET-08 | ET-11 | ET-14 | ET-17 | ET-20 | ET-23 | ET-33 |
|---|---|---|---|---|---|---|---|
| Maximum pull (kN) (adhesia coef. 0,25) |
20 | 27,5 | 35 | 42,5 | 50 | 57,5 | 82,5 |
| Electromotors | three phase asynchronous | ||||||
| Power (kW) | 2×30 | 2×45 | 2×60 | 2×60 | 2×75 | 2×75 | 4×75 |
| Speed control | speed changer | ||||||
| Weight (t) | 8 | 11 | 14 | 17 | 20 | 23 | 33 |
| Gauge (mm) | 600 – 1200 | 600 – 1200 | 750 – 1200 | 750 – 1200 | 750 – 1200 | 750 – 1200 | 750 – 1435 |
| Minimum curve radius (m) | 10 | 13 | 15 | 18 | 20 | 20 | 25 |
| Number of axles / propelled | 2 / 2 | 2 / 2 | 2 / 2 | 2 / 2 | 2 / 2 | 2 / 2 | 4 / 4 |
| Max. speed (km/h) | 18 | 18 | 18 | 18 | 20 | 20 | 30 |
| Height of cabin (mm) | 1600 – 1800 | 1600 – 1800 | 1650 – 1800 | 1650 – 1800 | 1700 – 1800 | 1700 – 1800 | 1700 – 2000 |
| Height of machinery (mm) | 1200 | 1200 | 1250 | 1300 | 1410 | 1410 | 1500 |
| Width (mm) | 1000 – 1300 | 1100 – 1300 | 1350 – 1800 | 1350 – 1800 | 1350 – 1800 | 1350 – 1800 | 1500 – 1850 |
| Length total (mm) | 4700 – 5300 | 5000 – 5500 | 5000 – 5500 | 5000 – 5500 | 5000 – 5500 | 5000 – 5500 | 7000 – 7700 |
| Headroom over rail (mm) | 80 | 100 | 120 | 120 | 120 | 120 | 120 |
| Overhead contact circuit height (mm) | 2200 ±200 | 2200 ±200 | 2200 ±200 | 2200 ±200 | 2200 ±200 | 2200 ±200 | 2300 ±200 |
| Trolley voltage (V) | 250 ±25 | 250 ±25 | 250 ±25 | 250 ±25 | 250 ±25 | 250 ±25 | 275 ±25 |
| Auxiliary accumulator (V/Ah) | 24 / 150 | 24 / 150 | 24 / 150 | 24 / 150 | 24 / 150 | 24 / 150 | 24 / 150 |
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