Detailed front elevation of a Siemens SIVACON S4 low-voltage switchboard showing the tie connection between QGBTA and QGBTB distribution panels. The drawing illustrates three sections (numbered 10, 11, and 12) containing outgoing connections and cable sections with a comprehensive busbar system.
Technical Specifications:
– Main busbar system rated at 1600A with 50kA short-circuit current (1s)
– L1, L2, L3, N, PE configuration throughout all sections
– Main busbar cross-section: 2x30x10mm for phases and neutral
– PE cross-section: 2x20x5mm
– Top-mounted main busbars (front position)
– Cascaded vertical busbar system rated at 1190A with 2x30x10mm cross-section
– N/PEN busbar: 30x10mm
– PE busbar: 40x5mm
The drawing shows the distribution panels with vertical busbar arrangements and corresponding circuit breaker compartments. The connection between panels forms a critical tie point in the power distribution system, ensuring electrical continuity between the two main switchboards.
