As the domestic economy develops, the national power grid and substation development requires extremely high demand for the types and quantity of the high voltage apparatus. Currently the GIS Equipment can be divided into two types: GIS and AIS. GIS requires much smaller occupied land and high reliability. Comparatively speaking, the AIS is much cheaper in terms of cost but occupying much more land. Therefore, many customers need an inter-mediate type combining both advantages of GIS and AIS. This is the reason why the ZHW- HGIS was developed.
The HGIS consists of CB, DS, ES, FES, CT and gas bushing, can be used together with AIS, requiring smaller land but higher reliability and suitable cost.
1. High reliability
High reliability can be ensured based on the conventional GIS, which requires less site work and fulfilling the switchyard requirement.
2. More usability
Proven standard modular design, which has advantages such as simple structure, less installation work and cost etc.
Cost for HGIS is around 80% of that of the GIS and 60% of AIS, which is more economical.
The electric wire&cable is used for transmit power(magnetic energy),information and to transform the electromagnetic energy, which is mainly divided into 5 major categories: bare conductor, magnetic wire, power cable, electrical equipment cable, communication cable. The products are applied in the fields such as the electric energy transmission of the entire process of electric power system from generation, transmission, transformation, distribution to consumption, the coil or winding for electrical communication and electrical equipment, signal transmission between devices and device control, etc.
Electric wire &cable can be designed according to different application fields and environments as well as products performances; overhead conductor products has the features such as good conductivity, high mechanical strength, light weight, low price, strong corrosion resistance, etc; high voltage and ultra high voltage power cable products has the features such as high-capacity, low capacitance loss, reliable operation, easy installation and maintenance, no fall limit or oil pollution, etc; medium & low voltage cable has the characteristics of energy saving and environmental protection such as being halogen-free low-smoke flame retardant, fire-resistant, cold-resistant, fire-proof, water-proof, anti-rodent, anti-termite, variable-frequency, etc; and industrial equipment cable is a kind of special cable which can be designed based on equipment operation requirements to be highly flexible, distortion-resistant, wear-resisting, corrosion resisting, and have long service time.
Quality and reliability are extremely important when completing Medium and High Voltage Terminations. It is imperative that the correct factory accepted process is used to ensure proper operation and long service life. Chan Hung provide terminations which could comply all requirement of customers.
(low/ medium/high voltage switchgear): MV Switchgear is product with modular structure, high standardization, response the strictest requirements to guarantee safety for operation and maintenance.
-Standard design with four compartments (Low voltage compartment, Busbar compartment, Circuit breaker compartment and Cable compartment).
-Compartments are divided by grounded metal partitions (PM).
-Quick make earthing switches can be provided as an option for earthing both in cable circuit and main busbar and it can operate in front side.
-VCB can be on/off and drawn in/out with the door closed. Mechanical interlocking is used to prevent mal-operation.