Engines are unique devices in that they must perform heavy-duty operations on a consistent basis. This means that buyers usually look for things like reliability and longevity when making a purchase. The NTA855 by Cummings is a versatile model that offers a number of distinct benefits. From improved power and speed when compared to other heavy-duty diesel engines to lower emission rates, the NTA855 is a very solid model.
The unit is designed to respond quickly to load changes. The permanent magnet generator (PMG) offers improved motor starting and fault clearing short-circuit capability. In addition to these perks, it also offers compatibility with various alternator sizes with low reactance 2/3 pitch windings. The alternator also provides low waveform distortion with non-linear loads and class H insulation.
Another important factor when it comes to diesel engines is control. Power can sometimes be a negative point if the engine is not configured in such a way that you are able to control it. In order to provide the right balance, the NTA855 is equipped with a standard PowerCommand electronic control system. This offers a number of perks including remote start and stop features and status message/alarm display.
While these types of technical features can prove handy in a number of situations, there are still a few common problems associated with diesel engines, especially those involved in heavy-duty use. One of these problems is overheating. This is why the NTA855 utilizes a powerful cooling system to help disperse and eliminate heat during and after operation.
The standard integral set-mounted radiator system has been configured to provide cooling capabilities even at ambient temperatures. This simplistic but solid design of the cooling system helps the NTA855 avoid overheating. Optional enclosures can be purchased for avoiding weather damage and excess noise.
| Generator Model | Frequency | Standby Rating (kW / kVA) | Prime (kW / kVa) | |
|---|---|---|---|---|
| C315 D5 | 50 | 250 / 313 | 220 / 275 | |
| C350 D5 | 50 | 280 / 350 | 256 / 320 | |
| C380 D5 | 50 | 310 / 388 | 280 / 350 | |
| C400 D5 | 50 | 320 / 400 | 291 / 364 | |
| C400 D5 | 50 | 320 / 400 | 288 / 360 | |
| C350 D6 | 60 | 350 / 438 | 320 / 400 | |
| C440 D5 | 50 | 352 / 440 | 320 / 400 | |
| C350D6 | 60 | 360 / 450 | 261 / 327 | |
| C400D6 | 60 | 400 / 500 | 365 / 456 | |
| C400 D6 | 60 | 400 / 500 | 365 / 456 |
