864-5091.9 • INSTALLATION AND OPERATING INSTRUCTIONS • 8DB10 • Revision 06 85/214
Installation
Preparing the busbar run for filling gas
➭ Remove all covers with the "Filter" inscription from the housings of one busbar run.
➭ Clean busbar housings that are dirty inside with a hand vacuum cleaner. In this case, clean
the bushing plates too with a rag.
➭ Prepare the flanges of the busbar housings for assembly.
➭ Clean the contact surfaces of the busbar housing covers with a lint-free paper,
and apply a thin film of grease (e.g. Polylub GLY 801, 0.40 kg).
Fig. 85: Desiccant bags in the gas compartments, design example
(position identified in the illustration by black squares; on the switchgear,
with the inscription "Filter" on the outside)
Item no. Designation Desiccant bags
①
Busbar housing, left end panel 2 x 250 g
②
Busbar housing, right end panel 2 x 250 g
③
Busbar housing, general type with "Filter" inscription on the cover 2 x 250 g
④
Top-mounted bus sectionalizer 2 x 250 g
⑤
Bus coupler 1 x 250 g
⑥
Interconnection housing of bus sectionalizer 4 x 250 g
⑦
Circuit-breaker housing, right-hand panel of bus sectionalizer
⑧
Bus riser housing
⑨
Circuit-breaker housing, general type 2 x 250 g
⑩
Three-position disconnector housing, general 2 x 250 g
NOTE
Observe the mounting location of circuit-breaker and bus riser housing in the bus sectionalizer.
➭ If the circuit-breaker housing of a bus sectionalizer is mounted in the right-hand panel,
the bus riser housing is located in the left-hand panel.
ATTENTION
In the ambient air, the desiccant bags lose their effectiveness rapidly and cannot be used
anymore.
➭ Use only desiccant bags whose packing is not damaged and whose humidity indicators in
the packing are blue.
➭Do not use desiccant bags if the humidity indicators are pink.
➭ After opening the packings, mount the desiccant bags in the gas compartment within
30 minutes and close the gas compartment hermetically.
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