DTH TGK TGR - exhausto.de

3004346_2012_12_07.fm Electrical connections
Current leakage During operation the EC control emits a leakage current of less than 3.5 mA. The leakage current
must be earthed, as otherwise there would be a risk of the motor becoming a live conductor.
Earth leak circuit
breakers
Only type A circuit breakers must be used for single-phase EC controls in compliance with IEC755
Amendment 2, for leakage current with DC content (pulsating DC).
These circuit breakers are marked with:
Requirements Disconnection time of max 0.3 seconds
Dimensioning of
the neutral
conductor.
Multiple one-phase DTH with EC installations in a shared network with a common neutral require
special dimensioning of the neutral, as the current is not a pure sine wave.
Example If three EC controls are installed, sharing 3 phases, the neutral current is the sum of the three
motors’ current.
Existing
installations
Lightning conductor
If you are fitting motors to an existing installation, check that the neutral conductor can cope with
the resultant load.
Any lightning conductor connected to the fan must be in accordance with applicable regulations
and legislation.
EXHAUSTO provides a two-year manufacturer's warranty on the fan.
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