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AF Contactors
General
The AF-Contactors have the same dimensions and nearly the same apperance as
the A-Contactors of equal rating. The only difference is that AF-Contactors are
fitted with an electronic coil interface. For a given coil, this interface allows the
contactor to accept a very wide voltage range as well in d.c. as in a.c., 50 or 60 Hz.
Control with voltage on A1 and A2
Operation of AF-Contactors can be done as with conventional contactors by
applying and removing voltage on A1 and A2. The function limits are very exact
compared with a conventional contactor and there is a built in hysterises in the
function.
Note: Minimum length of the starting pulse: 70 ms
AF-Contactors comply with international standards IEC 947-1, 947-4-1 and European standards EN 60 947-1, 60 947-4-1. Moreover, in
environment 2, they meet the electromagnetic compability rules (EMC): additional clauses A11 and draft A11to above mentioned EN standards.
Using these materials in environment 1 may lead to radio-interferences requiring the use of additional mitigation methods.Here are the definitions
given in the additional clause A11 to standard EN 60 947-1. Environment 1: "Mainly relates to low-voltage public networks such as residential,
commercial and light industrial locations/installations. Highly distributing sources such as arc welders are not covered by this environment".
Environment 2: "Mainly relates to low-voltage industrial networks/locations/installations including highly disturbing sources".
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