Basic Knowledge of Diesel Generator Power Part 1

Following the previous article where we popularized 10 basic common sense about diesel generator sets, in this article, let's continue to learn another 10 basic common sense. Diesel generator sets are non-continuous operation power generation equipment. If they operate continuously for more than 12 hours, their output power will be about 90% lower than the rated power. Although the power of diesel generator sets is relatively low, due to their small size, flexibility, portability, complete supporting facilities, and ease of operation and maintenance, they are widely used in mines, railways, field construction sites, road traffic maintenance, as well as factories, enterprises, hospitals and other departments as standby power or temporary power sources.

After an operating electrician takes over a diesel generator set, which three key points should be verified first?

Verify the true useful power of the unit. Then determine the economic power and standby power.

Verify what kinds of self-protection functions the unit is equipped with.

Verify whether the electrical wiring of the unit is qualified, whether the protective grounding is reliable, and whether the three-phase load is basically balanced.

How to verify the true useful power of a diesel generator?

The method to verify the true useful power of the unit is as follows: Multiply the 12-hour rated power of the diesel engine by 0.9 to get a value (in kW). If the rated power of the generator is less than or equal to this value, then the rated power of the generator is defined as the true useful power of the unit. If the rated power of the generator is greater than this value, then this value must be used as the true useful power of the unit.

There is an elevator starting motor with a power of 22KW. How large a generator set should be equipped?

22×7 = 154KW (Elevators are direct load-starting models. The instantaneous starting current is generally 7 times the rated current to ensure the elevator moves at a constant speed. That is, at least a 154KW generator set should be equipped.)

How to calculate the optimal operating power (economic power) of a generator set?

Poptimal = 3/4 Prated (that is, 0.75 times the rated power).

A diesel generator set is a power generation device, referring to a power machine that uses diesel, etc. as fuel and a diesel engine as the prime mover to drive the generator to generate electricity. A complete set of units generally consists of a diesel engine, a generator, a control box, a fuel tank, starting and control storage batteries, protection devices, an emergency cabinet and other components. The whole can be fixed on the foundation for fixed use, or it can be installed on a trailer for mobile use. The state stipulates that the engine power of general generator sets should be 10% greater than the power of the generator set.

For some generator sets, the engine power is expressed in horsepower. How to convert between horsepower and the international unit kilowatt?

1 horsepower = 0.735 kilowatts, 1 kilowatt = 1.36 horsepower.

As a professional diesel generator manufacturer, we always insist on using first-class talents to build a first-class enterprise, create first-class products, create first-class services, and strive to build a first-class domestic enterprise. If you would like to get more information welcome to contact us via [email protected].