I 16 17 Gas Insulated Switchgear Maintenance The interior of GIS equipment is designed to eliminate almost all inspection and maintenance. To maintain the highest criteria of operating reliability, a routine inspection and maintenance schedule may be recommended. Routine Inspection and Maintenance Schedule Number oof Service switching CCB schedule Inspection operations* 1. Gas pressure and operating pressure check Ordinary Every 2 months 2. Recording number of Inspection operations of CB and lightning arrester Regular 1. Gas leakage test Every 500 times Every 3 years 2. Operating device inspection Inspection and lubrication Detailed Every 2,000 times Every 6 years 1. Detailed inspection of operating Inspection device * Number of switching operations at rated current of circuit breaker Dielectric Test UHF External Sensor UHF Internal Sensor
Total QQuality AAssurance Hyosung’s commitment to quality is exemplified by its ability to deliver on-time and produce high quality products at competitive prices. The quality level of products is sustained by Hyosung’s integrated Quality Assurance program. The Quality Assurance program was created by combining Hyosung’s professional experience with abundant operating knowledge accumulated from the earliest phases of industry development. In addition, customer’s requirements are recognized from design to assembly, testing and installation and each process is carried out with the company’s manufacturing motto of “customer’s goal is Hyosung’s goal” as a foundation. This type of focus and commitment to quality has allowed Hyosung to surpass its competitors in quality and reliability. 01 Design Process Hyosung’s Research and Development activities are dedicated to providing customers with the solutions that are demanded at the present and the future. The latest computer assisted software and systems are applied to the design analysis of each GIS for the best quality and reliability. 02 Assembly Process All critical components of Hyosung GIS are assembled in a “clean room” as a safety measure against contaminants. These critical components are then installed in their enclosure and pressurized with SF6 gas. All openings are sealed to prevent dust from entering during shipping. 03 Testing Process Hyosung performs tests based on international standards and customer’s requirements. Hyosung also strives to exceed all established testing criteria by carrying out additional tests that it considers essential in advancing the current quality of its product. 04 Installation Process All components are completely assembled into one compact unit, tested in the factory and shipped in one complete bay. Through this, Hyosung minimizes installation time and cost and passes on the savings to its customers. When the component arrives at its destination, Hyosung engineers are standing-by during installation to ensure that your new GIS is not only installed correctly but functioning to match your exact specification by performing tests through various tools and testing equipments. The final commissioning test, which consists of various essential analysis, is performed before the final acceptance of the product. Certificates ISO 9001 ISO 14001 OHSAS 18001 CESI KEMA KERI FGC GOST-R