STAR Slip Ring Series

Explosion-Proof Slip Rings

STAR series Slip Rings are suitable for use in potentially explosive atmospheres.

The essential requirements for safety in hazardous areas are established in European Directives 2014/34/UE of 26 February 2014. STAR is the Explosion Proof Slip Ring for your applications in mines and for tunnel construction with the presence of flammable gases.

Specification

Areas with a potentially explosive atmosphere are classified according to EN60079-10, while the technical requirements of electrical equipment in classified areas are given in standard EN 60079-14. Technical protection for electrical appliances according to EN60079-0 and EN600079-1

STAR I M2 Ex db I Mb

System type: group I - mines
Category: M2 protective equipment or systems that guarantee a high level of protection; they must be capable of being de-energized in the presence of gas
Protection type: Ex db flameproof enclosure
Protection level: I Mb high protection

GENERAL CHARACTERISTICS

Models: STAR 0, 1, 2, 3
Poles function: power, signals and data transmission
Max voltage: Up to 24 kV for specific models
Max current: 800 A
Protection degree: IP 65
Max. RPM: 100 rpm (depending on model)
Mounting position: vertical/horizontal
Working temp.: - 20 °C / + 40 °C
Relative humidity: 30% to 60%

FAQ

What are the requirements for explosion-proof Slip Rings?

To meet the requirement for explosion-proof, a Slip Ring must assure the enclosure is able to contain any explosion originating within its housing and prevent sparks from within its housing from igniting vapors, gases, dust, or fibers in the air surrounding it.

How can I know if the slip ring is suitable for my area according to ATEX directive?

The classification of dangerous areas is carried out following the recommendations suggested by EN 1127-1, EN 60079-10-1 (for explosive gas) and EN 60079-10-2 (for explosive dust), which provide elements for the division of dangerous areas into three zones, depending on the frequency and time of presence of the explosive substance. For gas-Ex we have zone 0, 1 and 2. Zone 0 is an area in which an explosive atmosphere in form of gas, vapor or mist is present permanently or for long periods > 1000 hours/year. Zone 1 is an area in which the formation of an explosive atmosphere consisting of a mixture of air and flammable substances in the form of gas, vapor or mist is possible during normal activities in a quantity comprise between 10 and 1000 hours/year. Zone 2 is an area in which the formation of an explosive atmosphere consisting of a mixture of air and flammable substances in the form of gas, vapor or mist is not probable during normal activities and, if it occurs, is only for a short time, less than 10 hours/year.

Which is the meaning of Group I and Category M2 in ATEX description?

Group I identifies the products to be used in mines, while the Category M2 defines the protective equipment or systems that guarantee a high level of protection and that must be capable of being de-energized in the presence of gas.