Required Practices For Explosion Proof Installations; Clarification Of Terminology; Recommended Practice For Severe Or Humid Environments - GE Masoneilan SVI II ESD Installation And Maintenance Manual

Required Practices for Explosion Proof Installations

The SVI II ESD is supplied with two threaded conduit entries. All wiring must be installed with
approved conduit and seals or with approved cable and cable glands according to local
codes. The spare conduit entry is plugged with a ½" NPT pipe plug. Thread engagement must
comply with local electrical codes. The cover must always be secured before applying power.
Do not connect HART
display with pushbuttons is recommended when Explosion Proof methods are applied.

Clarification of Terminology

In Factory Mutual Research and Canadian Standards Association codes, Explosion Proof
means use of approved enclosures and conduit enclosed cables, while in ATEX code, this
method is called Flameproof. In ATEX countries, Explosion Proof means both Flameproof and
Intrinsically Safe.

Recommended Practice for Severe or Humid Environments

The SVI II ESD circuitry of is encapsulated to protect from corrosive atmospheres. To prevent
moisture from damaging electronic components of the SVI II ESD in high humidity or tropical
environments, a sealed junction box must be used. Wiring from the junction box to the SVI II
ESD is sealed by flexible cable with a cable gland or with a potted nipple and pigtail, if in
compliance with applicable code.
186 |
=GE Oil & Gas
®
communication devices in a hazardous area. Use of the SVI II ESD local
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