• For FM Group A,B,C,D : “SEAL ALL CONDUIT ENTRIES WITHIN 18 INCHES”.
• For CSA group B,C,D: “SEAL ALL CONDUIT ENTRIES WITHIN 18 INCHES”.
• For CSA group A: “FOR GROUP A SEAL AT ENCLOSURE WALL”
There are 4 types of joints between inner and outside of the E-type enclosure which are flameproof:
1. The cement between glass and cover (length ≥10mm)
2. Thread between body/cover M100x1.5 (Tolerance 6g/6H min. 8 full threads engaged)
3. Thread for conduit opening left and right:
− M20 x 1.5, M25 x 1.5, (for metric: Tolerance 6g/6H min. 8 full threads engaged);
− ½ NPT, ¾ NPT. (for NPT: Tolerance ANSI/ASME B1.20.1).
4. The process opening:
− M20 x 1.5, M25 x 1.5 (for metric: Tolerance 6g/6H min. 8 full threads engaged);
− ½ NPT, ¾ NPT, 1 NPT (for NPT: Tolerance ANSI/ASME B1.20.1);
− All NPT threads (cable entry openings) are in accordance with ANSI/ASME B1.20.1.
− All Metric threads (cable entry openings, thread between body and cover and threaded
holes for feed thru capacitors) are in accordance with fit class 6g/6H (ISO 965-1 + 965-3).
When installed according to this manual, this product will meet the directives and standards as listed
in Appendix A of this manual.
4.3.5 CONNECTION TO OTHER ENCLOSURES
The E-series can be connected to another Ex d enclosure following the compulsory conditions
below:
• The part which is used for the connection between the two volumes must be Ex d certified;
• The connected enclosure must be Ex d certified with its own electrical equipment inside
(i.e. pickup coil or other sensors);
• For the short cylinder version, the volume of empty space inside this added volume must not
represent more than 13,5 cm
3
;
• There may be no generation of heat in the added enclosure;
• There may be no added electrical energy in the added enclosure; any energy which comes from
the E-series is already taken into account in the E-series certificate.
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