Products

To meet the requirement for rapid DC resistance measurement of transformers, our company has developed a three-channel DC resistance tester specifically designed for YN-connected windings. The tester offers several advanced features, including simultaneous energization of all three phases, independent current and voltage sampling, and the ability to simultaneously measure and display the three-phase resistance values and the three-phase unbalance rate. This significantly reduces the test time required for measuring the DC resistance of transformers and addresses the issue of long test durations for each tapped winding of electric power transformers. The tester requires only one-third of the time compared to traditional methods.

The instrument can simultaneously measure the three-phase winding DC resistances of a transformer. For on-load tap-changing transformers, there is no need for discharging, and the tapping can be adjusted directly using the instrument. The measurement time is reduced to one-third of the time required by traditional single-phase methods, greatly shortening the overall testing time. The entire instrument is controlled by a microcontroller (SCM), which automatically performs functions such as self-checking, data processing, and display. Additionally, the instrument features automatic discharging and an audible discharge alarm. With advantages such as stable test data, high accuracy, fast operation, and excellent repeatability, this instrument is the ideal choice for on-site measurement of transformer DC resistance.

To meet the need for rapid measurement of transformer DC resistance, our company has developed a large-scale power transformer DC resistance tester that integrates Three-Phase simultaneous testing, Magnetic Augment Function, and Degauss Function into a single unit. This tester features simultaneous three-phase power-on, independent current and voltage sampling, and the ability to simultaneously measure and display three-phase resistance and the three-phase unbalance rate. These capabilities significantly reduce the testing time for transformer DC resistance and address the issue of long measurement times typically required for the DC resistance of each tap winding in power transformers.

The insulation oil dielectric strength tester is a product developed by our company's research and technical personnel. It adheres to the national standard GB 507-1986 and the relevant provisions of the IEC 60156 international standard. Leveraging their expertise and after extensive field tests and continuous efforts, we have developed a high-accuracy, fully digital industrial instrument.

To meet the diverse needs of users, this series of instruments is available in single-cup, three-cup, and multiple-cup models. The instrument is easy to operate and features an attractive design. With automatic digital microcomputer control, it offers high measurement accuracy, strong anti-interference capabilities, and safety. The instrument is powered by a lithium battery, allowing tests to be conducted without an external power supply.

In power systems, railway systems, and large petrochemical plants and mines, enterprises have a large number of electrical equipment, and their internal insulation is mostly oil filled insulation type. The dielectric strength of insulation oil is a routine test that must be measured. To meet market demand, our company has independently developed and produced a series of insulation oil dielectric strength testers based on national standard GB/T507-2002, industry standard DL429.9-91, and the latest power industry standard DL/T846.7-2004. This instrument is based on a single-chip microcomputer, which realizes full automation of testing, high measurement accuracy, greatly improves work efficiency, and also greatly reduces the labor intensity of staff.

Many power systems, railway systems, large-scale petrochemical plants and enterprises have a lot of electrical equipment whose internal insulation are mostly oil-filled insulation type, and therefore, test on insulating oil dielectric strength is common and necessary. To meet the needs of the market, we have developed and produced a series of insulating oil dielectric strength testers according to national standard GB/T507-2002, industry standard DL429.9-91 and the latest Electric Power Industry Standard DL/T846.7-2004 by ourselves. This instrument, by using a single-chip microcomputer as the core, can operate in full automation with high accuracy, greatly improving work efficiency and reducing the labor intensity of workers.

Many power systems, railway systems, large-scale petrochemical plants and enterprises have a lot of electrical equipment whose internal insulation are mostly oil-filled insulation type, and therefore, test on insulating oil dielectric strength is common and necessary. To meet the needs of the market, we have developed and produced a series of insulating oil dielectric strength testers according to national standard GB/T507-2002, industry standard DL429.9-91 and the latest Electric Power Industry Standard DL/T846.7-2004 by ourselves. This instrument, by using a single-chip microcomputer as the core, can operate in full automation with high accuracy, greatly improving work efficiency and reducing the labor intensity of workers. Moreover, it is small in size and convenient to carry.

In power systems, railway systems, and large petrochemical plants and mines, enterprises operate a large number of electrical equipment, most of which use oil-filled insulation. The dielectric strength of insulation oil is a routine test that must be conducted.This instrument, by using a single-chip microcomputer as the core, can operate in full automation with high accuracy, greatly improving work efficiency and reducing the labor intensity of workers. 

In conclusion, insulating oil dielectric strength testers play a critical role in assessing the insulation quality of electrical equipment. Understanding the usage scenarios and taking necessary precautions when using these testers are fundamental to maintaining the safety and efficiency of electrical systems. By adhering to best practices and safety guidelines, operators can effectively utilize insulating oil dielectric strength testers to uphold the integrity of insulating oils and ensure the reliable operation of electrical devices.

Density refers to the mass of the substance contained in the unit volume at the specified temperature. The density of the petroleum product increases with the increase of carbon, oxygen and sulfur in its composition, and thus contains more arene, colloid and asphaltene has large density, and thus contains more cyclane has medium density, and thus contains more alkane has small density. Therefore, according to the density (or specific gravity) of petroleum products, the type and composition of oil can be judged at some extent. SCMD2001 petroleum products density tester follows national standards GB / T1884-92 Density Measurement ff Petroleum and Liquid Petroleum Products (Density Meter Method), and is mainly used for the density determination of transparent, low viscosity liquid and viscous liquid, with the characteristics of high temperature control precision, reliable stability and easy operation.

Six phase voltage and six phase current can be output, which has made it is possiable to be any combition, such as the output mode of the combination of conventional four phase current and three-phase current, six phase voltage mode, six phase current mode and 12 phase output mode. It not only can be compatible with the traditional way of various tests, but also can conveniently carry out differential test of three-phase transformer.