Juhonkia continues to introduce new innovations in the field of ring main switchgears. The ring main switchgears series products achieve full coverage of voltage levels and different insulation media products. It is the first domestic enterprise to simultaneously complete the R&D, manufacturing, network access testing and batch supply of standardized and customized SF6 gas insulated, solid insulated, environmentally friendly gas insulated, atmospheric air insulated ring main units and primary and secondary integrated ring main boxes.
2026-09-09 00:12:44
How to Choose GIS Voltage and Current Ratings for a Substation ProjectChoose a GIS voltage rating from the system’s highest operating voltage and insulation-coordination study—not from the nominal voltage alone. Choose a GIS current rating from the maximum continuous load, future transfer conditions, ambient temperature, enclosure arrangement, and busbar temperature-rise test. In practical terms, GIS voltage rating selection must confirm rated voltage Ur, while
2026-09-08 00:01:51
SF6 vs SF6-Free Ring Main Units: Which Is Better for Your Project?For a utility planner comparing SF6 vs SF6-free ring main units, the decision is no longer based only on footprint and purchase price. A project may need an SF6-free RMU for 12kV distribution, while another may still prioritize a proven SF6 design because of an existing maintenance system. The most useful answer to how to choose a ring main unit manufacturer depends on the network voltage, fault
2026-09-07 00:01:29
How to Plan Power Transmission and Distribution Equipment for a New SubstationPlanning a new substation means matching the power transmission and distribution equipment to the load forecast, fault level, protection philosophy, site conditions, and required energization date. A practical design should answer six questions before procurement: how many MVA are required, what voltage classes are needed, what short-circuit current must be interrupted, how the busbar will be
2026-09-04 00:09:30
Pole-Mounted Circuit Breaker Installation: Key Requirements and Safety ConsiderationsInstalling a pole-mounted circuit breaker is not only a lifting and wiring task. It is a coordinated process involving a recloser, medium-voltage distribution, pole-top switchgear, protection settings, grounding, and safe work procedures. A correct installation improves feeder reliability, reduces outage time, and protects workers and equipment. This guide explains the main installation
2026-09-04 00:09:32
Ring Main Unit for Solar and Wind Power Projects: What Should You Consider?Solar and wind farms need reliable medium-voltage switching between generators, transformers, and the utility grid. A Ring Main Unit for Solar and Wind Power Projects helps operators isolate faults, protect transformers, and restore service without shutting down an entire collector circuit. When comparing a ring main unit for solar power projects, engineers should review voltage, current,
