58
Operating Instructions AEC
11/17
NOTE
Residual current circuit breakers (r.c.c.b.) can be used in combination with AECs to a
limited extent only. An all-current sensitive residual current relay with leakage current
separation must be used. There are two reasons for this:
1.
All rectifier loads (i.e. not just AECs) can produce a direct current in the mains
cables which can reduce sensitivity of the circuit breaker.
2.
When radio interference filters are used, high leakage currents might trip the r.c.
circuit breaker too soon which would result in unwanted failure of the AEC.
Interference-free operation with residual current device is guaranteed at a tripping current
30 mA if the following points are observed:
o
All-current sensitive residual current devices (Type B to EN 61800-5-1)
o
Use EMC filters with reduced leakage current or, if possible, do not use EMC filters at
all.
o
The length of the shielded motor cable is ≤ 10 m and there are no additional
capacitive components between the mains or motor cables and PE.
NOTE
Unexpected currents
Please note (according to EN61800-5-1): This product, especially if used in combination
with connected components, can cause a direct current in the protective earth conductor.
Where residual current devices (RCD) or residual current monitors (RCM) are used
as a protection against direct or indirect contact, only RCDs / RCMs of Type B are
permissible on the power supply side of this product.
The terminal identifiers (X1) and (X2) shown in the following illustration apply to devices
of sizes 3 through 6. Devices as from size 7 feature appropriate contact pins.
Summary of Contents for AEC 401 Series
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