832-6063.0 * DESCRIPTION SIMOSEC * REVISION 02 31
Description
9.6 Service conditions
SIMOSEC switchgear is intended for application under the ’’usual service conditions“
defined in ANSI/IEEE C37.20.3, clauses 4 and 8.1.
Generally, ’’usual service conditions“ are defined as an environment in which the
equipment is not exposed to excessive dust, acid fumes, damaging chemicals, salt air,
rapid or frequent changes in temperature, vibration, high humidity, and extremes of
temperature.
For application is other than ’’usual service conditions“ defined by ANSI/IEEE C37.20.3,
Consult Siemens.
SIMOSEC switchgear is largely insensitive to climate and ambient conditions by virtue of
the following features:
• No cross insulation between phases
• Metal enclosure of switching devices (e.g. three-position switch) in gas-filled stainless-
steel switchgear vessel
• Dry-type bearings in operating mechanism
• Essential parts of the operating mechanism made of corrosion-resistant materials
• Use of climate-independent current transformers
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