this case, increased requirements
apply the terminal blocks and their functional units. For example, all
disconnectable elements must have release force greater than N
or 100 times their own weight prevent unintentional opening.Principles for the use terminal blocks Ex-areas
Requirements for terminal blocks for type protection
Equipment protection Intrinsic safety i
For applications with type protection equipment intrinsic safety separate
approval required for terminal blocks.
Ex i
Ex ec
ATEX
C.
Further approvals and guidelines for the explosion protected areas
Other national and international approvals and directives are based the IECEx
approval.36 3029140000
Installation
C
Standards and industries
. For example, ATEX for the European market, CCC for the Chinese
market, for the South Korean market EAC for the Eurasian Economic
Union, which includes Russia, Belarus, Kazakhstan, Kyrgyzstan and Armenia. addition the approved terminal
blocks, other standard terminal blocks can also used, whereby the following
more stringent spacing requirements apply the area:
• Between conductor entries adjacent terminals
• Between conductor entries and grounded metal parts
• Increased requirements for clearances due solid insulation
Requirements for terminal blocks for type protection ec
When test disconnect terminal blocks fuse terminal blocks are
used, they must have approval for the type protection for equipment
protection increased safety ec
