Outdoor MV Switching Substation Product Overview
Development of modern industry has put forward higher requirements for automatic and intelligent electrical control equipments. It has become an essential trend and development orientation to make use of technologies on modern electronics, sensor, communication and computer networks to integrate modules for monitoring, protection, control and measurement of electrical equipments under normal and accidental conditions for uniform and optimal management. In recent years, enormous changes have taken place to urban power grid in China. Numerous electric load intensive areas have been or are being formed in most of cities. Therefore, new power supply modes have witnessed an accelerated development via the ring main unit/switching station with such advantages as zero civil construction, limited floor area, flexible configuration, reliable power supply mode and less time for construction, installation and debugging.
DFW-12 outdoor high-voltage switching station is a complete set of electrical equipment developed based on summary of experience in safe and reliable operation of branching box with switch and technologies on automatic system of distribution network, which satisfies national conditions in China, and represents advanced technical level in China. DFW- 12 outoor high-voltage switching station integrate 12kV switch cabinet, PT power cabinet, feeder FTU, RTU, communication control terminal, metering and automated meters as well as UPS as installed and debugged into a movable, sealed and damp proof stainless steel case to shorten the construction cycle, and thereby realize modularized integration and assembly of primary and secondary systems of urban distribution network.
DFW-12 outdoor medium-voltage switching station are manufactured and tested in accordance with the latest version of the below IEC regulations:
IEC 62271-100 :2012 High-voltage switchgear and controlgear - Part 100: Alternating-current circuit-breakers.
IEC 62271-105 High voltage switchgear and controlgear - Part 105 : Alternating current switch-fuse combinations.
IEC 62271-102 High voltage switchgear and controlgear- Part 102 : Altemating current disconnectors and earthing switches.
IEC 62271-103 High voltage switchgear and controlgear - Part 103: Switches for rated voltages above 1 kV and up to and including 52KV
IEC 62271-200 :2011 High voltage switchgear and conrolgear - Part 200; AC metal-enclosed switchgear and controlgear for rated voltage above 1KV and up to and including 52 kV
IEC 62271-1 :2007 High voltage switchgear and controlgear - Part 200: Common specifications
IEC 62271-206 VIPS System for rated volages between lkv and 52kv
IEC 60255 Measuring relays and protection equipment
|Daily temperature difference||15K,25K|
|Seismic fortification intensity||9 degree|
|Rated SF6 gas pressure||0.04MPa|
|Solar radiation intensify||1000W/m²|
(Corresponding to 700Pa as measured on the cylindrical surfaace) Impact from condensation and rainfall is to be considered;
Vibration from switchgear and control equipment or earthquake can be neglected.