XGN-12 Solid insulated ring network cabinet

The XGN-12 solid insulation ring network cabinet switchgear is a new generation of environmentally friendly solid insulation ring network cabinets independently developed by our company.

Overview

The XGN-12 solid insulation ring network cabinet switchgear is a new generation of environmentally friendly solid insulation ring network cabinet independently developed by our company. It is mainly composed of three functional units: V unit (circuit breaker unit), C unit (load switch), and F unit (combination electrical unit). Each unit can be used independently or freely expanded. Its structure is divided into an intelligent control instrument room, operating mechanism, and primary part. The instrument room can be equipped with a microcomputer protection (controller), the mechanism is a special spring-operated mechanism, and the primary part adopts APG automatic gel technology, completely sealing the isolator and arc extinguishing chamber in epoxy resin, and has special connectors and busbars. The arc extinguishing chamber design and switch selection use special copper-chromium contact materials, R-type longitudinal magnetic field contacts, and a completely one-time sealing process. The arc extinguishing chamber's short-circuit breaking capacity, stability, electrical life, temperature rise, and insulation level have been significantly improved compared to previous arc extinguishing chambers (copper-aluminum contact materials, cup-shaped longitudinal magnetic field contact structure, and incomplete one-time sealing process). The operating mechanism adopts a spring-operated mechanism integrated with the switch, that is, the isolator 
and the main switch spring-operated mechanism are integrated, which can easily achieve interlock, and the mechanism has few parts, reducing unnecessary transmission links, high reliability, and can be equipped with electric operation according to user needs. 
Fixed insulation fully enclosed switchgear: It uses solid insulation materials as the main insulating medium and conductive connections, isolators, grounding switches, main busbars, branch busbars, etc., and the main conductive circuits are singly or combined and then encapsulated with solid insulation medium to form one or several modules with certain functions, which can be recombined or expanded and have full insulation and full sealing performance. 
The three-position mechanism adopts an over-center spring design, which has the functions of switching and closing load current, and can also realize manual and electric operation.

Model Meaning

Classified by functional units in the system: infeed cabinet, outgoing cabinet, bus coupler cabinet, metering cabinet, PT cabinet, lifting cabinet, etc., represented by the wiring diagram number; 
Classified by main switch components: load switch cabinet, load switch-fuse combination electrical cabinet, circuit breaker cabinet, and isolator cabinet, etc., represented by F (fuse combination electrical appliance), V (circuit breaker), C (load switch), respectively.

Environmental Conditions

◆ Altitude: ≤ 5000m; 
◆ Ambient temperature: -45℃ ~ +65℃; daily average value not exceeding +45℃; 
◆ Relative humidity: daily average value not exceeding 95%, monthly average value not exceeding 90%;

◆ Environment not affected by corrosive or flammable gases; 
◆ No fire, explosion hazard, and no frequent violent vibrations. 
Note: When the environmental conditions are different or there are other special requirements, please consult the manufacturer to provide products under special usage conditions.

Referenced Standards

◆ GB311.1-1997 "Insulation Coordination of Power Transmission and Transformation Equipment"; 
◆ IEC62271-1-2007 "High-voltage switchgear and controlgear - Part 1: General rules"; 
◆ IEC620071-200-2003 "AC metal-enclosed switchgear and controlgear for voltages from 1 kV to 52 kV"; 
◆ GB3906-2006 "AC metal-enclosed switchgear and controlgear for voltages from 3.6 kV to 40.5 kV"; 
◆ GB3309-1989 "Mechanical tests for high-voltage switchgear at normal temperature"; 
◆ GB16926-2009 "High-voltage AC vacuum load switches - fuse combination electrical appliances"; 
◆ GB/T11022-2011 "Common technical conditions for standards of high-voltage switchgear and controlgear"; 
◆ GB1984-2014 "High-voltage AC circuit breakers"; 
◆ GB1985-2004 "High-voltage AC isolators and earthing switches"; 
◆ GB3804-2004 "3.6kV~40.5kV High-voltage AC load switches"; 
◆ DL/T403-2000 "Technical conditions for ordering 12-40.5kV indoor high-voltage vacuum circuit breakers"; 
◆ DL/T404-2007 "3.6-40.5kV AC metal-enclosed switchgear and controlgear"; 
◆ Q/GDW730-2012 "Technical conditions for 12kV solid insulation ring network cabinets"; 
◆ 1016006-0010-A0 "General technical specifications for 12kV solid insulation ring network cabinets of State Grid Corporation of China".

Technical Parameters