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GB
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96403-08.2019-DGbFEIRu
Equipment
Type of ignition protection
Terminal box (Offshore)
Ex e
Terminal box (Onshore)
Ex nA
Terminal board
Ex nA
Through terminals in the terminal box
Ex e
Cable/line entrances in the terminal box (accessories)
Ex e
Magnetic coil LR
Ex e mb
Oil sump heater
Ex d
Oil differential pressure sensor INT250 Ex
Ex nC
Hot gas PTC sensor
Ex nA
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Product description
Accessories
Heating elements for the compressors to protect against explosion risks are designed in the protection
types increased safety (Ex d) and have to have to be mounted stationary at the designated areas
in the compressor housing. The heating elements can be operated without temperature- and oil
level control since the thermal type testing by the manufacturer verified that the heating elements
prevent the exceeding of the temperature class of the compressor. The control has to be carried
out in a way that the heating element can only be operated during shutdown of the compressor.
The magnetic coil of the capacity regulator is designed in the protection type encapsulation (Ex m) to
protect against explosion risks. In addition, the connecting areas of the coil are placed in a housing
that complies with the requirements of the protection type increased safety (Ex e).
The oil differential pressure sensor INT250 Ex from Kriwan is executed as a simple electrical operating
device without a recognised ignition protection type. Please note that the plastic housing of the
INT250 Ex can be electrically charged by means of charge-generating processes (e.g. cleaning with
a dry cloth, direct additional ventilation via fan etc.). Accordingly, the operator is required to take
measures so that ignition hazards can be reliably ruled out.