Dynamic braking support for a shield-tunneling muck transport locomotive
| PROJECT SNAPSHOT | Shenzhen Metro Line 27 | |
| Application | Shield-tunneling muck transport locomotive | Product | Braking resistor |
| Model | RST60KWx2-2.8Rx2-IP23 | Configuration | 2 x 60 kW; 2 x 2.8 ohm; IP23 |
Shenzhen Metro Line 27 is being built in an underground shield-tunneling environment. The supplied site photos show a rail-bound muck transport locomotive and cars working inside the tunnel, where repeated starts, stops and loaded movements call for predictable electrical braking.
The specified braking resistor package is used in the locomotive drive system to absorb braking energy during deceleration. By converting excess electrical energy into heat, the resistor supports DC-link voltage management and controlled braking in a compact mobile-equipment installation.
Dynamic braking support for an electric muck transport locomotive used in shield-tunneling operations.
High-power configuration identified by the project brief: RST60KWx2-2.8Rx2-IP23.
Ventilated, bolted enclosure with the specified IP23 rating, as documented in the on-site installation photo.
Figure 1. Muck transport locomotive and cars operating on the underground construction track.
The following field photos document the working environment and the installed braking-resistor enclosure supplied for the locomotive application.
Figure 2. Shield-tunneling work zone and protected access platform.
Figure 3. Installed yellow braking-resistor enclosure with ventilation louvers.
The braking resistor absorbs excess electrical energy during deceleration, supporting controlled braking for repeated loaded movements. Supplied field photos show the muck transport train in the tunnel and the yellow ventilated enclosure installed on the vehicle.
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