4 YT-870/875 series
Explosion proof type of cables and gaskets should be used, when explosion gases are
present at the installation site.
Power should be turned off completely when opening product’s cover. When opening
the cover, ensure that there is no power remaining in any electrical parts nearby.
Blind plug is required when any port is not being used.
Flameproof certified sealing fitting and/or cable glands must be used. Power cable
must be at least 1mm
2
or 18AWG.
For external ground terminal, cable rug with surface area of more than 5.5mm
2
should
be used.
2. Product Description
2.1 General
Limit switch box, YT-870/875 series, monitors and transmits the valve position <open /
close> at the specific point.
2.2 Main Features and
Functions
Designed to be Ex db IIC T6 and Ex tb IIIC T85’C explosion proof grades.
Economical price and long product life time.
Available in stainless steel 316 enclosure material.
2.3 Label Description
Fig. 1: YT-870/875 Body Label
A. Model Number: Indicates model number.
B. Explosion Proof: Indicates certified explosion proof grade.
C. Enclosure.: Indicates protection grade
D. Switch Type: Indicates switch type of the unit.
E. Rating: Indicates allowable voltage
F. Serial Number: Indicates unique serial number
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