Current-Carrying Capacity and Overlapping Area
The latest version of GB/T 5273-2016 (which replaces GB/T 5273-1985) is based on IEC 62271-301:2009. In terms of form and dimensions, it has removed the specification of terminal shapes and sizes, as well as deleted Appendix A (which provided recommended terminal dimensions based on rated current and their connection methods) and Appendix B (which listed […]
Is earthing switch a simple device?
Many people think that the earthing switch is just a simple earthing device. As long as it can be closed and the ground connection can be maintained, it is fine. Therefore, the earthing switch is not taken seriously. The contacts, springs, etc., are made of simple and cheap materials, and the manufacturer does not pay […]
Medium voltage side mounted circuit breaker
Side-mounted circuit breakers are mainly used in air-insulated ring main cabinet circuit breaker program, used in conjunction with disconnect switches to constitute the transformer outgoing protection, also used in other air-insulated circuit breakers Switchgear, compact dimensions, due to the longitudinal arrangement, it can be ensured that in a very small width of the interphase and […]
What is the Lightning Impulse Voltage Test?
Lightning is one of the most powerful electrical phenomena in nature, and its impact on electrical equipment and systems cannot be underestimated. The lightning impulse voltage test is an important means to evaluate the withstand capability of electrical equipment when encountering lightning strikes. By simulating the high voltage and instantaneous characteristics of lightning, researchers can […]
Comprehensive Comparative Analysis of Schneider, Siemens, and ABB Environmentally Friendly Gas Switchgear（SF6 Free RMU)
This is information about the current environmentally friendly switchgear from each of the three major brands (ABB, Schneider, Siemens). The switchgear types are as follows ABB: SafeRing / SafePlus Air Series Schneider: RM AirSeT series Siemens: 8DJH series I. Environmental Performance All three switchgear models adopt environmentally friendly gases, effectively reducing the impact on the […]
Grounding switch operation
The MV grounding switch is an important part of the MV switchgear as the grounding protection of the high voltage circuit during maintenance and overhaul. The grounding switch needs to withstand short-term withstand current, peak withstand current, that is, maintenance and repair, grounding switch closed, accidental power supply, the grounding switch needs to be stable […]