Panel Design - Siemens 8BT2 Installation And Operating Instructions Manual

2.2.

Panel design

Basic design
Wall standing type 8BT2 panel
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8BT2 truck-type circuit-breaker switchgear consists of various panel types which can be
freely combined according to the requirements.
• Enclosure made of galvanized sheet steel
• Front doors and lateral switchgear end walls are powder-coated with resistant epoxy resin
Material
• Individual modular compartments in solid-wall design
• Modular compartments bolted together
8BT2 truck-type circuit breaker switchgear is of the modular type and has four
compartments.
Fig4. Panel types according to layout plan
Revision 04 * INSTALLATION AND OPERATING INSTRUCTIONS 8BT2 * 881-4027.9
Example:
Site altitude: 3000 m above sea level
Switchgear rated voltage: 36kV - Rated lightning impulse
withstand voltage: 170kV
Rated lightning impulse withstand voltage to be selected
170 kV · 1.28 = 217.6 kV
Result:
According to the above table, the switchgear with the rated
voltage of 52 kV and rated lightning impulse withstand
voltage of 250 kV is to be selected. (Please see IEC 62271-
1:2007, clause 2.2.1)
Free standing type 8BT2 panel