CN-12/630-25 solid insulated ring network switchgear is a new generation of environmentally friendly composite insulated ring network cabinet. It is a fully sealed power supply unit. All live parts and switches are fully sealed in an epoxy plastic shell. There is no SF gas in the shell. The entire switch device is not affected by the external environment, ensuring operational reliability and personal safety, and Maintenance-free is achieved.

 The solid insulated ring network cabinet is composed of three types of switches, namely V unit (circuit breaker unit), C unit (load switch unit), and F unit (combined electrical unit). Each unit can be used alone or freely expanded. Its structure is divided into Intelligent control of the instrument room, operating mechanism and primary part. The instrument room can be equipped with microcomputer protection (controller). The primary part adopts APG automatic gel process to completely seal the isolation switch and arc extinguishing chamber in epoxy resin, and has a dedicated The connector is connected to the busbar. The arc extinguishing chamber uses special copper-chromium contact materials, R-type longitudinal magnetic field contacts, and a complete one-time sealing and discharge process. The arc extinguishing chamber's breaking short-circuit current capability and stability, electrical life, temperature rise and insulation level are higher than before. The arc extinguishing chamber (copper-aluminum contact material, cup-shaped longitudinal magnetic field contact structure, and incomplete one-time sealing and arrangement process) has been significantly improved. The operating mechanism adopts an elastic operating mechanism integrated with the switch, that is, the isolating switch and the main switch elastic operating mechanism are integrated into a whole, which can facilitate interlocking, and has fewer parts, reducing unnecessary transmission links, high reliability, and Electric operation can be realized according to user needs.

 Solid insulated fully enclosed switchgear: It uses solid insulating materials as the main insulating medium and conductive connections, isolating switches, grounding switches, main busbars, branch busbars and other main conductive circuits singly or combined, and then covered and packaged with solid insulating medium into one or more A module with certain functions that can be reassembled or expanded and has fully insulated and fully sealed properties.

 The ring network unit is suitable for 12kV, 5OHz three-phase AC power distribution system, and is used for ring network power supply or Zhongyuan power supply. The ring network unit can be installed in the power distribution system of industrial and mining enterprises, residential areas, schools, parks, etc. It can also be installed in compact box-type substations for the control and protection of distribution transformers. Therefore, both indoor and outdoor ring network units can realize power distribution automation.

◆Isolation knife visible fracture

There is an obvious visual window for the isolation fracture in front of the cabinet. You can check the isolation closing position, isolation separation position, and grounding closing position. The three working positions are convenient for on-site staff to check and determine the position of the isolation knife, which is very safe.

◆Pressure relief design

Internal arc pressure valve: When arcing occurs inside the product, the pressure will be released from the pressure release valve and the arcing will be discharged to the cable trench to avoid accidental injury to the operator.

◆Green and environmentally friendly

It is designed with environmentally friendly materials, does not use SFg gas as arc extinguishing medium and insulation, and has no pollution to the environment. The primary circuit uses a minimal contact design to ensure low energy consumption during operation.

The Main Technical Parameters

Name		Unit	parameter
Rated voltage		KV	12
Rated current		A	630
Rated short-time withstand current (4s)		THE	25
Rated peak withstand current		THE	5o
Rated short circuit making current (peak value)		THE	5o
Rated active load breaking current		A	630
Rated closed loop breaking current		A	630
Rated battery charging breaking current		A	10
Rated breaking transfer current of combined electrical appliances		A	370o
1min power frequency withstand voltage	Phase-to-ground vacuum fracture	KV	42
	Isolate fracture	KV	48
Lightning impulse withstand voltage	Phase-to-ground vacuum fracture	KV	75
	Isolate fracture	KV	85
Mechanical life	Breaker	Second-rate	10000
	Isolation knife, grounding knife	Second-rate	3000
Protection level			IP4x
Enclosure rating			IP4X
Partial Discharge		pc	≤20(Measured at 1.2ur）