110 kV transformer switching on line

Nice audio of the 50 Hz inrush. 110kV / 33kV 60MVA transformer Sorry for the poor quality as it was drizzle and some water hit the camera lens.

Transformers take different types of distortions while taking load. Here that sound

Aluminum Conductor Composite Reinforced (ACCR)

Aluminum Conductor Composite Reinforced (ACCR) is a rather new comer to towerline power transmission technology. ACCR can deliver 2 to 3 times the capacity without the risks and delays of major construction projects. On time, in budget, back to service – with proven reliability. Aluminum Conductor Composite Reinforced (ACCR) is overhead transmission conductor like ACSR and ACSS, with higher ampere capacity with less thermal expansion (sag). ACCR can carry two or more times the current of a standard conductor of comparable diameter. It has less weight and sag, but the same strength and can be installed to meet your tension and clearance requirements. This allows you to maximize the capacity of your transmission upgrade using existing structures and rights of way. Compared to a rebuild project, you can get your upgrade done faster and with fewer permitting requirements. ACCR can be used any place standard ACSR conductor. ACCR's core is aluminum-based, rather than steel, it is more conductive than steel core conductors, resulting in lower losses under the same operating conditions. In addition, 3M ACCR comes in a trapezoidal wire design that can improve conductivity up to 28% compared to the same size, round wire ACSR. ACCR Conductors cost around 4 times of the standard conductors. See how easy ACCR is to install by viewing the Installation videos. Click the link below to view the Installation Equipment, Procedures and Hardware videos, as seen at IEEE PES 2008. Installation Equipment, Procedures and Hardware Videos

Outdoor high-voltage AC SF6 breaker made in China

Outdoor high-voltage AC SF6 breaker is used to control EHT Power of the range 110 kV.LWA-126/T3150-40 type outdoor high-voltage AC SF6 breaker is porcelain type SF6 breaker, it adopts a self extinguishing interrupter structure,the

interrupter is located in a insulated porcelain housing and the SF6 gas works as the insulation and arc-extinguishing media, also the springmechanism is equipped; this kind of breaker is widely used inhydro powerstation, city network substation and large power stations,where the breaker controls and protects the power transmission line. This China make product is very cheap and worksatisfactory.

Thisoutdoor high-voltage AC SF6 breaker is fromTianshui Changcheng Switchgear Co.,Ltd (CTCS) is alarge-scale professional company in China`s manufacturing field of transmission and distribution switchgear, is a backbone enterprise ofLanzhou Great Wall Electrical Stock Limited Company.The company located in Tianshui CityIt mainly produces 0.4-126KVswitchgears, electrical components and LV switchgears. The products arewidely used in national large-scale power projects and otherlarge/middle industrial projects such as: petrol-chemical,metallurgy,transportation,mine and construction etc.

Read more at http://www.mvvacuumcircuitbreaker.com/pro.asp?id=11