Limit Line Impedance for Testing Small Distributed Generation System Grid Connection
Simulating a line impedance consisting of resistances and reactances (0.05Ω, 0.1Ω, 0.2Ω×2, and 0.5Ω) at 30A and 60Hz.
This is the line impedance for conducting tests added due to the revision of the interconnection testing methods for the system. It corresponds to certification tests for interconnection devices for small distributed generation systems.
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basic information
Each resistor and reactor is connected in parallel with an electromagnetic contactor (3P3E), and can be selected in units of 0.05Ω. ◆ Connect to a computer to select resistors and reactors ◆ Operate via the contact output of the terminals on the back of the rack (for external electromagnetic contactor b contact AC220V, 10A) ◆ Rated input is AC200V, 30A (1φ3W, 50/60Hz) ◆ An AC fan for cooling is installed on the top of the rack (blowing out from the top)
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Applications/Examples of results
Grid connection testing for small distributed generation systems.
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Company information
Since the time of the Sunshine Project at the current Ministry of Economy, Trade and Industry, we have developed simulated power sources, measuring instruments, power conditioners, and more, in response to requests from organizations such as the National Institute of Advanced Industrial Science and Technology, the Central Research Institute of Electric Power Industry, and Tokyo University of Agriculture and Technology. Based on these achievements, we have commercialized our products and expanded sales to various research institutes and manufacturers, proudly positioning ourselves as a niche leader in this field. We specialize in the development of products and systems that combine hardware and software, including simulated power sources such as solar cells and storage batteries, load devices necessary for grid connection testing, and testing systems that operate these components collectively. We also have extensive experience in solar cell measurement, and our I-V curve tracer is widely used not only for the maintenance of solar power plants but also for research and development purposes at manufacturers, research institutions, and universities. We have numerous delivery records of automated measurement systems that incorporate measuring instruments and load devices. Development of power electronics equipment that combines analog and digital technologies, development of control software using DSP, and construction of PV measurement systems are among the services we offer, tailored to meet our customers' needs.