Low-voltage Circuit BreakersMolded Case Circuit Breakers for DC Circuit (up to 1000VDC)
Recent Trends
In recent years, solar power generation has been expected to become a growth industry for a low-carbon society due to its advantageous ability to reduce greenhouse gas emissions and other benefits. In addition, power supply shortages have led to the recognition of the importance of distributed power generation facilities, and this has accelerated steps to enhance the power supply system by constructing mega-solar power generation plants throughout the country.
Furthermore, the introduction of solar power generation systems in residential homes has been increasing, favorably driven by the development of subsidy programs and lower installation costs.
Installation Example of an Industrial Solar Power Generation System
Solar Power Generation Facilities
Junction Box and Current Collector Box
These panels are used to accumulate and supply the DC current generated by the solar cell module to the power conditioner. Compact circuit breakers and switchgear for DC circuits are installed.
Power Conditioner
A device that converts DC power generated by solar cell modules into AC power suitable for use in factories and households. Install a DC high-voltage circuit breaker on the input side (DC circuit) and an AC circuit breaker on the output side (AC circuit).
AC Collector Box
This panel is used to accumulate the AC power output generated from the power conditioner. An earth leakage circuit breaker (ELCB) for AC circuits is mounted.
Current Boosting Cubicle
This cubicle is used to boost the output voltage from the power conditioner to a voltage that matches the system for the purpose of selling electricity. A circuit breaker for AC circuits is mounted.
Distribution Panel
This panel supplies electricity to the load side. Install a single-phase 3-wire ELCB with neutral wire open-phase protection.