8DAB 12 – blue GIS Gas-Insulated Medium-Voltage Switchgear siemens.com/8dab12

Features Gas-insulated switchgear (GIS) type 8DA/B has been an integral part of the medium-voltage portfolio at Siemens for more than three decades. More than 125,000 panels of this switchgear type have already been installed worldwide. The 8DA/B portfolio has now been extended by 8DAB 12 – a switchgear using Clean Air – an insulating gas exclusively consisting of natural elements of the ambient air. 8DAB 12 is available as single and double busbar with ratings up to 2750 A and 40 kA with the panel types circuitbreaker panel, bus coupler and bus sectionalizer, disconnector panel, metering panel,...

Common electrical data, filling pressure and temperature Rated insulation level Rated voltage Ur kV 7.2 12 Rated short-duration power-frequency withstand voltage Ud: - phase-to-earth, open contact gap kV 20 1) 28 1) - across the isolating distance kV 23 1) 32 1) 1) Higher values according to national standards on request 2) 2750 A with forced ventilation 3) Maximum permissible normal current dependent on ambient air temperature

Integrated and top-mounted components Single busbar Three-position disconnector Circuit-breaker panel Vacuum circuit-breaker Busbar earthing switch Plug-in type voltage transformer plugged in directly or with cable connection Capacitive voltage detecting system Current transformer Surge arrester Panel connection with inside-cone plug or bar connection Zero-sequence current transformer Disconnector panel Busbar connection with or without three-position disconnector Further versions available: bus sectionalizer, metering panel, cable connection panel and dummy panel. 4 Voltage transformer with...

Integrated and top-mounted components Double busbar Circuit-breaker panel Three-position disconnector Vacuum circuit-breaker Capacitive voltage detecting system Busbar earthing switch Plug-in type voltage transformer plugged in directly or with cable connection Current transformer Surge arrester Panel connection with inside-cone plug or bar connection Zero-sequence current transformer Voltage transformer with or without three-position disconnector Busbar connection with or without three-position disconnector 1) Bus sectionalizer also separately for busbar system 1 and 2 Further versions available:...

Double busbar Free-standing arrangement Wall-standing arrangement 6 Depending on national requirements Lateral wall distance > 500 mm optionally required on the left or on the right Minimum lateral wall distance > 100 mm optionally required on the left or on the right

1. Busbar Own continuous gas compartment (single-pole) for single and double busbar. Conforming to IEC 62271-100 with the classes M2, E2, and C2; maintenance-free under normal operating conditions according to IEC 62271-1. Inside-cone plug-in system size S2, S3 and S4, and solid-insulated bar connection can be implemented. Customer-specific options in different heights, Single-pole insulated and metal-enclosed voltage transformer possible at the busbar with/without disconnecting facility, and at the outgoing feeder. Ring-core current transformer possible at the busbar, at the cable connection...

Published by Siemens AG Smart Infrastructure Electrification & Automation Mozartstraße 31c 91052 Erlangen Germany siemens.com/8dab12 Article No. SIDS-B10064-00-7600 VO 2204014 en DS 04.22 0.0 Subject to changes and errors. The information given in this document only contains general descriptions and/or performance features which may not always specifically reflect those described, or which may undergo modification in the course of further development of the products. The requested performance features are binding only when they are expressly agreed upon in the concluded contract. For the U.S....