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Nov 11, 2008 · The impedance of a generator is slightly different depending on the load level and power factor of the load it feeds. It has something to do with the air gap and rotor is not …
Mar 17, 2005 · Thermal protectors? Impedance protection? Give us a little more info -- what is the nameplate FLA of a particular motor, and what size and type of fuse was designed for that …
Apr 8, 2018 · Thermal impedance could be used to mean the inverse of thermal diffusivity. In the electrical world impedance is a function of resistance, capacitance, and inductance.
Nov 26, 2012 · Hi, I wonder why the IEC60076-5 requires that the system source impedance be added up to the transformer short circuit impedance and used in calculating the through fault …
Apr 23, 2015 · We just installed a new UPS suit fed from a Siemens 3VL MCCB and the switchboard is 300m distance from the load (UPS). The MCCB is fitted with an Electronic Trip …
May 10, 2019 · As we saw ZH is almost zero ie no impedance drop in H circuit ie when LV1 is fully loaded, LV2 terminal voltage under no-load will not be affected by the load regulation in HV …
Sep 26, 2012 · The transformer's impedance and X/R ratio largely determine your fault levels for a short-circuit on either side of it, you can't have 'too much' fault current through it. It'll only be …
Oct 7, 2013 · So, in a normal thermal analysis, you would need to take the impedance from the air temperature outside of the chassis, go through the chassis, go through the air layer inside the …
Aug 7, 2001 · In comparing various commercially available products I am finding that manufacturers report different data; thermal conductivity, thermal resistance and thermal …
Mar 7, 2013 · The 'father' of underground duct bank calcs wrote in his paper in 1957 (AIEE Paper 57-660, Table IV) that the typical value is 85. Any ideas why it has changed? Maybe a simple …
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