Air-insulated medium-voltage switchgear 8BT2

Robust and reliable design

Worldwide, air-insulated technology has served as a basis for an established, reliable power supply for more than 100 year. 8BT2 air-insulated medium-voltage switchgear has been launched by Siemens on the Turkish market in 2001. Upon reflecting on the global need for a product at 36kV voltage level, manufacturing of 8BT2 has begun in Mexico too and has been adapted to the specific market requirements of the different industries and power supply companies.

Download now!

8BT2 catalog

Your benefits at a glance

Saves lives

Internal arc classification: IAC A FLR ≤ 50 kA, 1 s
All operation only possible with closed HV-door
logical mechanical interlocking system

Increases productivity

maintenance intervals of switchgear > 10 years
use of maintenance free switching devices
cable testing without isolating the busbar

Saves money

maintenance intervals of switchgear > 10 years
use of maintenance free switching devices
minimized space requirements (reduced building investments) due to compact panel dimensions and pressure release system to outside

Ensures peace of mind

factory assembled, type-tested switchgear acc. IEC 62271-200
„Air“ as insulating medium always available
more than 510,000 air-insulated switchgear panels of Siemens in operation worldwide succesfully

Preserves the environment

“Air” as insulating medium absolute environment friendly
local production presence in all regions
life expectancy > 30 years optimizes energy balance
materials used are fully recyclable without special knowledge

Product information 8BT2 is a metal-enclosed, factory-assembled and type-tested medium-voltage switchgear according to IEC 62271-200 for indoor application up to 36 kV. Loss of service continuity is category LSC 2B and partition class PM. 8BT2 is internal arc classified switchgear according to IAC A FLR up to 31.5 kA for 1 s arc duration. It's mainly used for power distribution. Eco-friendly thanks to air as insulating medium and the use of vacuum technology!

Technical data

Rated voltage	kV	up to	36
Rated frequency	Hz		50/60
Rated short-duration power-frequency withstand voltage	kV	up to	70
Rated lightning impulse withstand voltage	kV	up to	170
Rated short-time withstand current, 3s	kA	up to	31.5
Rated peak withstand current 50 Hz / 60 Hz	kA	up to	79 / 82
Rated short-circuit breaking current	kA	up to	31.5
Rated short-circuit making current 50 Hz / 60 Hz	kA	up to	79 / 82
Rated normal current of busbar	A	up to	3150
Rated normal current of feeders	A	up to	3150
Degree of protection - enclosure Degree of protection - between compartment			IP4X IP2X
Dimension - Width - Depth (FL) - Depth (FLR) - Height	mm mm mm mm		1200 2450 2700 2400

Classification according to IEC 62271-200
Partition class	PM (partition of metal)
Loss of service continuity category panels	LSC2B
Accessibility of compartments ( enclosure): - Busbar compartment - Switching device compartment - Low-voltage compartment - Cable compartment: Front access Rear access (in FLR only)	tool-based interlock-controlled tool-based interlock-controlled and tool-based tool-based