Testing Methods for Insulation Class of Diesel Generator Sets

In electrical equipment such as generators, insulation materials are the weakest link and are often prone to accelerated aging due to high temperatures. By conducting an insulation class test on a Cummins diesel generator set to determine whether its insulation performance meets the equipment requirements, the occurrence of equipment leakage or short - circuit accidents caused by insulation material aging can be greatly avoided. So, how to test the insulation class of a diesel generator set? The editor of Dingbo Power will introduce it to you:

Electrical Testing Method

The electrical testing method is divided into two types: the pulse current method and the radio interference method. The pulse current method is used to detect the parameters of partial discharge during the operation of the generator set online, that is, the pulse current generated during partial discharge. The radio interference voltage method is used to detect the electromagnetic radiation waves generated during the partial discharge of the generator. Since the pulse current method can calibrate the discharge charge according to the equivalent circuit of partial discharge and has a relatively high detection sensitivity, it is currently a commonly used method.

Non - electrical Testing Method

The non - electrical testing method is a method that does not require the detection of electrical parameters but detects the partial discharge of the generator set through acoustics or special gases. There are usually two non - electrical detection methods. One is ultrasonic detection. When partial discharge occurs in the generator, pulses are generated with a frequency spectrum of about 1HM, but the acoustic signal is very weak. Ultrasonic detection converts the signal into an electrical signal and then amplifies and outputs it. The other is the ozone concentration detection method. Since ozone is a characteristic gas of generator corona, an ozone detection device is installed in the generator set. By detecting the ozone concentration to judge the voltage state of the generator set, the intensity of the partial discharge state during the operation of the generator can be determined, thereby effectively monitoring the insulation of the generator.

The above are the testing methods for the insulation class of diesel generator sets introduced by Guangxi Dingbo Power Equipment Manufacturing Co., Ltd. Currently, the electrical testing method is mainly used to test the insulation class of the generator set because of its high detection sensitivity and convenience. It is hoped that this will be helpful to you.

Founded in 1974, Dingbo Power Generation Equipment Co., Ltd. is a professional manufacturer of diesel engines, generators and generator sets, and one of the earliest manufacturers of diesel engines, generators and generator sets in China. Since 1992, the company has been a qualified generator set manufacturer inspected by the National Internal Combustion Engine Generator Set Quality Supervision and Inspection Center. Over the years, the company has carried out extensive cooperation with Shanghai Diesel, Weichai, Sweden Volvo, Sino US joint venture Chongqing Cummins, American Qianglu and other companies, and has become a (OEM) supporting factory and technical center. It has 64 sales service departments nationwide, providing users with design, supply, commissioning and maintenance services at any time. Dingbo quality is worth depending on. If you want get more information, please feel free to send email to [email protected] we will pay highly attention on your question.