Solid insulated ring main unit accessories load switch combination switch core (excluding sulfur hexafluoride gas)
Key attributes
| Brand | Switchgear parts |
| Model NO. | Solid insulated ring main unit accessories load switch combination switch core (excluding sulfur hexafluoride gas) |
| Rated voltage | 12kV |
| Rated normal current | 630A |
| Series | RNZH |
Product descriptions from the supplier
The load switch combination switch core is the core control accessory of 12kV/24kV sulfur hexafluoride (SF6) free solid insulated ring main unit. It integrates the dual functions of load switch and combination switch, and plays a key role in circuit on-off, load control, and safety isolation. It is the core component to ensure the stable operation of medium voltage distribution system.
Core Features
Adopting SF6 free pure solid insulation design, environmentally friendly and pollution-free, with no risk of gas leakage, in line with the development trend of green power distribution, and meeting environmental policy requirements.
The transmission mechanism is finely optimized, with rapid response and precise positioning of the opening and closing actions, stable switch characteristics, and the ability to efficiently achieve load current on/off and circuit isolation.
Integrate multiple mechanical and electrical interlocking devices to strictly prevent dangerous behaviors such as misoperation and load operation, in compliance with safety regulations in the power industry.
Compact structure, strong size adaptability, perfectly matches the installation space of solid insulated ring main unit, resistant to aging and vibration, easy maintenance, and long service life.
Applicable scenarios
Suitable for 12kV/24kV SF6 free solid insulated ring main unit, widely used in medium voltage distribution systems such as urban distribution networks, industrial plants, new energy power stations, commercial complexes, etc., suitable for scenarios such as line branch control, load switching, and fault isolation.
Yes, it fully complies with global environmental requirements: ① No SF6 gas is used in the whole structure, avoiding greenhouse gas emissions (SF6 has a GWP value 23,500 times that of CO₂); ② Conforms to EU F-Gas Regulation (Regulation (EU) 2014/527) and international carbon neutrality policies; ③ The solid insulation material (epoxy resin) is recyclable, further reducing environmental impact; ④ It can replace traditional SF6-type switch cores directly, helping power enterprises achieve green transformation
Its core function is to serve as the core control component of solid insulated ring main units (RMU), realizing on/off, load breaking and circuit isolation in medium-voltage power distribution systems, without relying on SF6 gas (environmentally friendly). Working principle: Adopt solid insulation material (epoxy resin) as insulation medium instead of SF6 gas; through manual/electric operation, drive the moving contact and fixed contact to complete circuit switching, and match the combination mechanism to realize linkage control of load switch and isolation function, ensuring reliable power supply and safe maintenance.
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