Electrical explosion proof junction box / flameproof junction box
with terminals
Description:
Explosion proof junction box with the GB3836 explosion-proof 2000
regulation, flameproof, made its mark is ExdIIB explosion.
Applicable to contain type IIA, IIB, the corresponding temperature
classes with explosive air mixture of district 1, 2 division
places.
Explosion-proof box as flameproof explosion-proof parts, can be
used as a control, lighting or power line cable branch connection
with, also can be used as tankers power circuit
Application:
Designed for Explosive atmosphere Zone land Zone 2
Designed for Groups IIA, IIB, IIC
Designed for Combustible dust Zone20, Zone 21, Zone22
Designed for Temperature classesT6
Apply to oil drilling platforms, offshore oil platform, oil
derrick, etc for the dangerous sites
Used in electrical control system assendorder and status, monitor
● The gas field is divided into three areas: Zone 0, Zone 1 and Zone
2:
Zone 0: A site where explosive mixtures in an explosive atmosphere
occur continuously in the form of gases, vapors or mists or exist
for long periods of time.
Zone 1: A site where explosive mixtures of gas, vapour or mist may
occur in an explosive atmosphere during normal operation. Zone 1 is
a typical application site for explosion-proof electrical
equipment.
Zone 2: In normal operation, explosive mixtures in the form of
gases, vapors or mists are unlikely to occur in explosive
atmospheres, and if present, are only occasional and short-lived
locations. Usually, "short time" means that the duration is no more
than 2 hours.
● The dust site is divided into three areas: 20, 21 and 22:
Zone 20: Combustible dust continuously or frequently occurs during
normal operation in an amount sufficient to form a mixture of
flammable dust and air and/or a location and container interior
that may form an uncontrollable and extremely thick dust layer.
Zone 21: During normal operation, there may be a place where the
amount of dust is sufficient to form a mixture of flammable dust
and air but not zoned 20. This area includes locations directly
adjacent to the charge or discharge of dust, where dust layers and
flammable concentrations of flammable dust and air may be produced
under normal operating conditions.
Zone 22: Under abnormal conditions, flammable dust clouds occur
occasionally and are only present for a short period of time, or
flammable dust occasionally accumulates or may present a dust layer
and produce a flammable dust air mixture but not zoned into Zone
21. If it is not guaranteed to exclude flammable dust accumulation
or dust layer, it should be divided into 21 zones.
