Ingress Protection

The metal enclosures provide the outer layer of protection for the control electronics.

Other layers are provided by the module covers and built into the modules. This

approach to protection means that a minimum of contaminants in the plant

environment reaches the control components, thus greatly extending the life of the

equipment.

For sealed, non-adjoined G61 enclosures, heat is transferred from the interior

surfaces of the enclosure and then dissipated by the enclosure’s exterior surfaces into

the plant environment. Air is not exchanged between the enclosure’s interior and the

outside environment. Therefore, contaminants are minimized inside the enclosure.

The enclosures support convenient top or bottom cable entry for TA cabling and

power wiring. Vented enclosures with roof-mounted fans are not recommended with

top cable entry, due to the location of the power supplies.