Medium voltage gas insulated switchgear
Medium voltage metal enclosed switchgear
Medium voltage switch
YB series box-type substation
YB type box-type substation is also called European-style box-type substation. The products comply with the latest national standards: GB/T17467 and the Ministry of Electric Power Standard DL/T537. As a new type of power supply and distribution device, it has many advantages over traditional civil substations. sex. The box substation completes the conversion, distribution, transmission, metering, compensation, system control, protection and communication functions of electric energy. The YB type box-type substation is a compact, pre-installed complete set of power distribution devices composed of high-voltage switchgear, distribution transformer, low-voltage power distribution equipment and shell, according to a certain wiring method. The high voltage is a load switch or a circuit breaker, and the transformer is a dry-type transformer or an oil-immersed transformer. The box body adopts a good heat insulation and ventilation structure, which is suitable for urban public power distribution, high-rise buildings, residential communities, industrial and mining enterprises, ports, oil fields, parks, highways and construction sites. It can also be modified to special It becomes a mobile power distribution device on the trailer chassis.
- Small size, compact structure and easy installation.
- Easy to relocate, thus greatly shortening the cycle and floor space of infrastructure construction, and also reducing infrastructure costs.
- On-site installation is simple, power supply is fast, equipment maintenance is simple, and the degree of automation is high, without the need for special personnel on duty.
- Especially it can go deep into the load center, improve power supply quality and reduce power loss.
- Low loss, low noise, low temperature rise, strong ability to resist sudden short circuit.
- The factory is prefabricated, and there are a variety of options to choose from. The appearance is beautiful and can be coordinated with the surrounding environment.
|Parameter name||Unit||High voltage side||Transformer||Low pressure side|
|High voltage tapping range||kA||±5%; ±2X2.5%|
|Connect group||D,yn11 Y,yno|
|Backup protection fuse||Breaking current 50|
|Plug-in fuse||kA||Breaking current 2.5|
|Oil-immersed load switch||kA||31.5 (fuse, circuit breaker)|
|Rated short-circuit breaking current||kA||50, 80|
|Rated short-circuit switching current||A||2100, 2200 (only for load switch)|
|Rated breaking transfer current||A||20/4, 25/2, 31.5/4||30/1,50/1|
|Rated short-time withstand current||kA/S||50,63,80||80,105|
|Rated peak withstand current||kA||42,65,95||35,55,85||2.5|
|1min power frequency withstand voltage||kV||75,125,185||75,125,200|
|Rated lightning impulse withstand voltage||kV||IP33;IP43|
|Ambient temperature||°C||300 thermal stability current 12KA, 16KA|
|600 Thermally stable current 30KA 40KA|
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