ZPA Pecky, a.s. MODACT MOKPED 100 Ex, Инструкция по установке и эксплуатации

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Explosion-proof closure „d“ – Type of protection in which the parts capable of causing ignition of an
explosive atmosphere are installed inside the closure; in case of internal
explosion this closure should withstand pressure of the explosion and
prevent spreading of the explosion into the surrounding atmosphere.
Zone 1 – A space where probability of occurrence of an explosive atmosphere of
a mixture of flammable substances in the form of gas, vapour or mist
with the air is occasional under normal operation.
Zone 2 – A space where occurrence of an explosive gaseous atmosphere formed of
a mixture of flammable substances in the form of gas, vapour or mist with
the air is improbable under normal operation; however, if this atmosphere
is formed it will only persist for a short period of time.
Zone 21 – An area in which the explosive atmosphere is created by a cloud of whirled
flammable dust in air formed in normal operation is occasional.
Zone 22 – An area in which an explosive mixture is not likely to occur in normal operation
and if it occurs it will exist only for a short time.
Applied Standards
The following basic standards apply to explosion-proof actuators:
ČSN EN 60079-14 Regulations for electrical devices in areas with a danger of explosion of flammable gasesand
vapours.
ČSN IEC 60721 Types of environment for electrical devices.
ČSN EN 60079-0 Electrical devices for explosive gaseous atmosphere. General requirements.
ČSN EN 60079-1 Electrical devices for explosive gaseous atmosphere. Explosion-proof closure
“d“.
ČSN EN 60079-10 Electrical devices for explosive gaseous atmosphere. Specification of dangerous areas.
ČSN 33 0371
Non-explosive mixtures. Classification and testing methods.
ČSN 34 3205 Operation of electric rotating machines and work with them.
ČSN EN 1127-1 Explosive atmospheres – Explosion prevention and protection.
ČSN EN 60079-31 Explosion properties. Equipment protected against dust ignition with “t“ closure .
Designation of explosion-proof properties
It consists of the following symbols:
Ex
Electric device complies with the standard ČSN EN 60079-0 and related standards for various types of
protection against explosion.
d Designation of the type of protection against explosion, explosion-proof closure according to ČSN EN 60079-1.
tb Protection by enclosure “t“ – according to ČSN EN 60079-31.
IIC, IIB Designation of the group of explosion-proof electric device according to ČSN EN 60079-0.
IIIC
Designation of explosion-proof electric equipment for explosive atmospheres with combustible dust, according
to standard ČSN EN 60079-0.
T6 Designation of temperature class of explosion-proof electric device of the Group II according to ČSN EN 60079-0.
T80°C Designation of explosion-proof electric equipment for explosive atmospheres with combustible dust, according
to standard ČSN EN 60079-0.
Gb Designation of explosion-proof equipment for explosive gaseous atmospheres, having a “high“ level of protection,
and not a source of ignition in normal operation or during expected malfunctions; according to ČSN EN 60079-0.
Db Designation of explosion-proof equipment for explosive dust atmospheres, having a “high“ level of protection,
and not a source of ignition in normal operation or during expected malfunctions; according to ČSN EN 60079-0.
IP 67 Identification of the degree of protection; according to ČSN EN 60079-0 and ČSN EN 60529.
Data on actuators
The actuators are fitted with the following plates:
1) Plate with data of non-explosive closures:
or