Approval/Certificate/Document of Conformity
IECEx Certificate
of Conformity
Certificate No.: IECEx ULD 14.0005U
Issue No.:6
Page 4 of 4
MARKING
This is an example of WDU 4/ZR. For the other types see the respective drawings.
ROUTINE EXAMINATIONS AND TESTS
According to IEC 60079-7 clause 7.1 in combination with clause 6.1 a dielectric strength test has to be carried
out. The routine tests may be performed on a statistical basis according to ISO 2859-1 with an acceptance
quality limit (AQL) of 0,04. Routine test is to be carried out according to Weidmuller procedure “High voltage
test” Document -NR: A_10_54.