SIRIUS 3RR2 current monitoring relays
8.5 Configuration
SIRIUS Innovations
698 System Manual, 01/2011, A8E56203870002-03
8.5.3 Application environment
Introduction
The following information must be taken into account when planning applications involving
current monitoring relays.
Installation altitude
The current monitoring relays are approved for installation altitudes up to 2,000 m. The
reduced air density at altitudes higher than 2,000 meters affects the relays' electrical
characteristics. The reduction factors which have to be taken into account when using
current monitoring relays at altitudes higher than 2,000 m can be obtained on request on the
Internet (http://www.siemens.com/automation/service&support
).
Operating conditions and resistance to extreme climates
3RR current monitoring relays are climate-proof. They are intended for use in enclosed
spaces in which no severe operating conditions prevail (e.g. dust, caustic vapors, hazardous
gases). Suitable enclosures are available as accessories for installation in dusty and damp
spaces. Condensation on the devices is not permissible.
Special application environments
SIRIUS components have been approved by a whole range of bodies for various sectors
(shipbuilding, etc.). An up-to-date list of approvals appears in Chapter 20 of the Siemens
Low Voltage LV1 Catalog, and more information, as well as an option to download
certificates, can be obtained on the Internet
(http://www.siemens.com/automation/service&support
).
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