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