Electrical Measuring Instruments Configuration for Diesel Generator Sets

Not all 700kW diesel generator sets require electrical measuring instruments regardless of their capacity and usage requirements. The specific configuration of measuring instruments should be determined based on actual operating conditions. The selected measuring instruments should be able to monitor various electrical operating parameters of the generator set to ensure its safe and economical operation. For example, if a generator set is primarily used to ensure operational safety and power observation is not critical, a power meter may not be installed. Additionally, if the diesel engine panel is already equipped with a tachometer and the generator set does not need to operate in parallel, a frequency meter is unnecessary. However, to ensure the safe operation of the generator, it is essential to prevent overvoltage and overcurrent in the stator and rotor, thus requiring the installation of AC voltmeters, AC ammeters, and DC ammeters.

AC voltmeters are used to measure voltage values in the circuit, and frequency meters are used to measure the frequency of alternating current in the measured circuit, working together to ensure the normal operation of the generator set. However, the selection of instruments for the diesel generator set control panel requires careful consideration, with attention to the following two points:

Choosing instruments with high accuracy is intended to ensure measurement accuracy. However, due to the small surface size of instruments used in generator set control boxes and harsh operating conditions, high-accuracy instruments are generally not used. According to the general technical requirements for control panels specified in GB10234 - 88 for AC mobile power stations, the accuracy class of other monitoring instruments should not be lower than 2.5, and the accuracy class of frequency monitoring meters should not be lower than 5.0.

The range of electrical measuring instruments should be selected such that when the generator is operating at rated load, the instrument pointer indicates approximately two - thirds of the measuring range. If the pointer indication is below this scale, it indicates that the instrument range is too large, resulting in increased instrument error. If the pointer indication is above this scale, it indicates that the instrument range is too small, leading to low measurement accuracy and sometimes failing to meet the operational requirements of the generator set.

Guangxi Dingbo Generator Set Manufacturing Co.,Ltd. was founded in 1974 and is one of the earliest manufacturers of generators and diesel generator sets in China. The company has a registered capital of 218.88 million yuan. The company covers an area of 86,000 square meters and a building area of 55,000 square meters. There are more than 660 employees, including 456 professional technicians and 106 senior technicians. It has 46 sales and service outlets nationwide. The main products are diesel engines, generator sets, and diesel generators, providing users with a one-stop service of design, supply, debugging and maintenance at any time. Dingbo has always insisted on using first-class talents, building first-class enterprises, manufacturing first-class products, creating first-class services, and making every effort to build a first-class domestic enterprise. If any question please feel free to visit our website https://www.dieselgeneratortech.com/ or send email to [email protected].