ATEX and IECEx approval for isolating transformers

02 January 2013

Cooper Crouse-Hinds has gained ATEX and IECEx approvals for its Ex-e (increased safety) GHG 410 range of safety and isolating transformers which are suited to use in potentially explosive atmospheres.

Available in power consumptions from 63 VA up to 1200 VA, the single phase Ex-e safety and isolating transformers have been approved for use in potentially explosive atmospheres to BVS 11 ATEX E195 U and IECEx BVS 11.0087 U.

They are used for the power supply of control circuits and their use is stipulated in the EN 61558-2-1 standard, if more than five operating coils are used in one circuit.

Safety and isolation transformers are designed to safeguard the application against direct and indirect contact. They allow easy modification of different mains voltages and provide short circuit current limiting to protect the operating equipment.

The Ex-e GHG safety and isolating transformers are said to be suitable for use in ambient temperatures from -55°C to +130°C. The Ex-e transformer needs to be mounted into a separate certified empty enclosure with IP66 protection.

The terminals on the transformers are separately certified to PTB 01 ATEX 1049 U, PTB 01 ATEX 1050 U, or PTB 01 ATEX 1051 U.

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