Electrical systems supplied by Cryodynamics are designed to meet all applicable codes for hazardous area locations, and are certified by various recognized agencies. The penetration from atmosphere into the cryogenic liquid is accomplished using specially designed electrical penetrations (feedthrus). Two types of feedthrus are generally used, one with a fiber glass type terminal block assembly with positively locked and sealed solid copper conductors, and a second type with glass/ceramic seals in a stainless steel flange.

Each electrical penetration seal assembly is pressure tested, helium leak checked, and subjected to a high potential test before being accepted for use.

Each feedthru system uses a vapor space either between two feedthrus or internal in a double seal arrangement, which can be purged with nitrogen to provide a safe, reliable method of installation.

Junction boxes and systems supplied are in compliance with the requirements of the U.S. National Electric Code and NFPA 59A for electrical penetrations into liquefied gas vessels, or to European standards such as ATEX meeting the appropriate EExe and/or EExd classifications.