Environmental protection gas insulated ring network cabinet
Product overview
Environmentally friendly gas-insulated AC metal-enclosed switchgear and control equipment (hereinafter referred to as switchgear) has the characteristics of green environmental protection, reliable operation, safety, compact structure design, small footprint, maintenance-free, long life, and strong environmental adaptability.
The switchgear is a completely sealed system, and all the live components and switches of the primary components are enclosed in a stainless steel shell, which is not affected by the environment. The product adopts modular design and can be arranged arbitrarily according to different design schemes to realize the combination of common box type and extended unit to meet the needs of various secondary transmission and distribution substations for compact switchgear.
The switchgear has passed the type test of the national high-voltage electrical apparatus test center, and can be widely used in small secondary power distribution stations, box-type switching stations, industrial and mining enterprises, airports, railways, commercial areas, high-rise buildings, highways, subways, tunnels and natural conditions. The field of places with harsh conditions.
Executive standards
GB/T 311.1 Insulation Coordination Part 1: Definitions, Principles and Rules
GB/T 1984 High Voltage Alternating Circuit Breakers
GB/T 1985 High-Voltage AC Disconnectors and Earthing Switches
GB/T 3804 3.6kV ~ 40.5kV HV AC Load Switches
GB/T 3906 3.6kV ~ 40.5kV AC Metal-enclosed Switchgear and Control Equipment
GB/T 4208 Degree of protection provided by enclosures (IP code)
GB/T 11022 Common technical requirements for standards of high-voltage switchgear and controlgear
DL/T 404 3.6kV ~ 40.5kV AC Metal-enclosed Switchgear and Control Equipment
DL/T 402 HV AC Circuit Breaker
Common technical requirements of DL/T 593 standards for high-voltage switchgear and control equipment
12kV ring network cabinet (box) standardized design customization scheme (2020 version)
Product Features
1. Green environmental protection
No greenhouse gas emissions; all parts and production processes strictly control the content of harmful chemical elements in raw materials to minimize the production of harmful substances in the production process; the recovery rate of materials after the product life cycle is more than 90%.
2. Strong environmental adaptability
All high-pressure components are sealed in an inflatable metal shell, especially suitable for harsh environments such as high altitude, severe cold, humidity, salt spray, and filth.
3. Small amount of maintenance
High voltage insulation is not affected by the external environment and is not easy to age. The vacuum interrupter is used instead of the grounding switch to close the short-circuit current, thus avoiding the grounding switch not being able to close the short-circuit current quickly for many times and the maintenance work required after closing the short-circuit current. Users do not need to carry out SF6 gas leakage detection and protection on site, which can reduce the life cycle cost of the equipment.
4, small size
The use of environmentally friendly gas insulation retains the advantages of gas-insulated switchgear size, small cabinet size, saving floor space.
5, safe and reliable
The use of micro-positive pressure gas insulation reduces the probability of gas leakage. Even if the gas tank has a gas leakage fault, it still maintains sufficient insulation strength at the lowest functional pressure (zero gauge pressure) and will not affect normal operation;
The primary charged part and the switch body are sealed in a stainless steel gas box, and are connected to the outside through a sleeve to avoid direct contact with the charged body; the equipment has a reliable pressure release device and a pressure relief channel to ensure the safety of personal equipment when a fault occurs; It has a perfect mechanical interlocking device to prevent misoperation to the greatest extent.
6. Modular design
The switchgear includes load switch unit (C), circuit breaker unit (V), metering cabinet unit (M), bus PT unit, etc. Through dedicated fully insulated and fully shielded bus connectors, multi-form combination (up to 4 units can be combined in the same N2 insulated gas box) can be realized, which can meet the needs of different regions, different forms and different customers to the greatest extent, provide a variety of power supply and distribution design.
7. Fully insulated and fully sealed design
The primary live part (main bus) and the switch body of the switchgear are sealed in a gas box formed by welding stainless steel plates. The main circuit is connected to the outside through a sleeve that meets the DIN47636 standard installed on the gas box, and can be connected to incoming and outgoing cables through a fully insulated, fully shielded and fully sealed detachable connector. The protection level of the gas box reaches IP67, and the inside of the gas box is not affected by the external environment, with short-term anti-flood and anti-condensation function.
8. New types of institutions
The new spring operating mechanism optimizes the parts and simplifies the transmission structure, making the overall mechanism more stable, the transmission more flexible, and can be extended to intelligent control. The interlocking adopts rigid connection, which is more reliable than soft connection. Components, microswitches and circuit boards are integrated in a modular manner to facilitate maintenance and overhaul.