Siemens 8bk80 Air-Insulated Medium Voltage Switchgear

Siemens 8bk80 MV Switchgear : Medium Voltage Switchgear, Air Insulated, 36 KV

Typical uses

The versatile use of the 8BK80 cubicles is suitable for installation in:

■ Power stations
■ Distribution stations
■ Industries
■ Power stations, transformer stations and
■ Cement industry
■ Iron and steelworks
■ Rolling mills
■ Mines
■ Chemical industry
■ Mineral oil industry
■ Pipelines
■ Offshore installations
■ Electrochemical
■ Petrochemicals
■ Railway power supplies

Personal Safety

• All switching operations including VCB rack in-rack out performed with front door closed
• Earthed metal partitions prevents contact with live parts
• Earthed metallic shutters

Siemens 8bk80 MV Switchgear : Technical Data

Rated voltage	36KV
Power frequency withstand voltage (rms )value	70KV
Lightning impulse withstand voltage (peak) value	170KV
Rated short circuit breaking current (rms) value	31.5KA
Rated short -time current (3sec) (rms) value	31.5KA
Rated short time current (peak) value	78.75KA
Rated current for feeders	2500A
Rated current for main busbars	3150A
Dimensions
Width (mm)	1100
Height (mm)	2250
Depth (mm)	2700

 

Construction

8BK80 metal clad switchgear is of horizontal isolation & horizontal draw out type, suitable for easy extension of switchgear in both directions, for system voltage 36kV.

The switchgear is designed for single busbar system & is fully compartmentalized. The design incorporates the set of interlocks for safe operation of switchgear.

The switchgear is suitable for use as distribution unit for switching load at substations of electric supply companies as well as for power stations & industrial plants.

• True metal-clad and air insulated switchgear
• Single Busbar System
• Circuit breaker mounted on withdrawable truck

Switchgear Layout

Circuit-breaker panels are used as incoming panels or feeder panels. The 3AH vacuum circuit-breaker is mounted on a truck for racking the circuit-breaker into the panel. The vacuum circuit-breaker can break all the rated normal and short-circuit currents specified on the rating plate.

Basic components
Metal partitions subdivide each panel into:

• Truck with 3AH vacuum circuit-breaker
• Panel connection for cables (cable & CT compartment)
• Busbar compartment
• Low-voltage compartment

Optional components

• Insulated busbar system
• Current transformers at the cable feeder as
  • Ring-core current transformers
  • Block-type current transformers
• Current transformers at the busbar
  • Block-type current transformers
• Voltage transformers
  • At the cable feeder
  • At the busbar
  • Withdrawable type, mounted on the truck
• Surge arresters
• Busbar earthing switch
• Sockets for capacitive voltage detection systems
• Feeder earthing switch

Siemens Transmission Products – Leader in innovations with comprehensive, connective and sustainable portfolio

Transmission products play a vital role in the energy value chain. Siemens Transmission Products provides all key elements including power transformers and distribution transformers as well as gas-insulated and air-insulated switchgear and components. Products are offered individually, bundled or with related engineering upgrade to systems. Our products offer low life cycle costs with maximum availability, highest efficiency and short commissioning times.

We are driving technology innovations not only regarding the performance of transmission products but also in the area of sustainability and eco efficiency. By merging physics and data we enable new products and applications: Sensformer® and Sensgear®. With our global factory network and leading innovations we provide the highest level of quality and reliability to our customers: TSOs, DSOs, power producers, EPCs and industrial companies.