Load Test of Diesel Generator Set

Jul. 05, 2022

What is diesel generator load test?


The load group test of diesel generator is an important aspect of preventive maintenance. The generator components need to be comprehensively evaluated and inspected under load conditions. When there is no frequent power failure in the area, the standby and emergency power supply system will only operate with little or no load for a long time. However, this is not enough, because there is no guarantee that the generator can achieve its full performance in the event of power failure. Generation opportunities become insensitive over time. If maintenance is not carried out, in the worst case, it may lead to fire and safety hazards, high operating costs and increased emissions.


Dingbo power company specializes in producing and selling diesel generators. Therefore, the goal of Dingbo power is to provide you with reliable high-quality diesel generator.


In order to let everyone know about the quality inspection of any generator set sold by Dingbo, the professional technicians of Dingbo recorded part of the process when they repaired and tested the diesel generator set.


Load Test of Diesel Generator Set


In addition to daily maintenance and preventive maintenance of these diesel generator sets to maintain their best operating condition, Dingbo also checks through load group test to ensure that the diesel generator operates normally under its rated output.


The diesel generator load test was extensively tested at a staggered rate for 4 hours. Dingbo makes the generator reach full load in stages. Start with 25% power, 50% power and 75% power, and then turn the crank to 100% power to ensure the smooth operation of the generator. In addition to the load test, Dingbo power's team conducted a thermal scan of the device to ensure that the device operates well inside and outside, and took oil samples.


Although many moving parts are involved in the process of inspection, test and maintenance, load test is usually a good indicator to indicate whether the generator set operates in its proper way.


Take the load test of diesel generator as the guarantee of emergency selection under the condition of emergency power supply. Although it is often exposed to light loads, the generator still needs to be tested regularly to ensure that it meets some of the most stringent electrical specifications. In order to eliminate unnecessary downtime and ensure the continuity of current, the generator should be tested by load group.


In fact, the standby and emergency diesel generator system requires acceptance testing at the initial installation. According to the standby and emergency diesel generator system, the full load test shall be carried out on site at the initial commissioning. In addition to this initial acceptance test, monthly load pool tests are required. Some particularly important industries also need to take further proactive and preventive measures by conducting quarterly, semi annual and annual load bank tests on generators.


This is a general experience: when the generator does not exceed 30% of its rated kW load, it is necessary to consider the load group test. The minimum load of the generator shall be 30% of the kW rating or sufficient exhaust temperature recommended by the manufacturer. Otherwise, ignoring regular maintenance or running the generator under zero load to light load may have adverse effects.


For example, diesel generators that do not reach the 30%kw rating are vulnerable to carbon deposition. Operating only on a light load or zero frequency basis, diesel generators accumulate carbon in their specific components (such as fuel injectors, exhaust valves, and exhaust systems) over time - resulting in unburned fuel, dirt buildup, oil leaks, and black combustion gases.


Dingbo Power diesel generator set is built according to world-class standards, with excellent efficiency, low fuel consumption and compliance with global emission regulations. It can provide 20kw~2500kw (20 ~ 3125kva) power generation capacity. Generator sets have a variety of options to meet your power needs and simplify the selection and installation process. Learn about power systems designed to meet your needs. Contact us right now to get more details and price, our sales email is dingbo@dieselgeneratortech.com. 

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