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Green hydrogen is extremely important to achieve climate targets, but not for putting into lots of new applications, but to replace the hydrogen currently generated by steam reforming. Only when we have achieved this replacement we should start to think about hydrogen or hydrogen derivates for...

Such kind of power supplies is quite common for electroplating. Look for a "pulse plating power supply" and you may find something suitable for your application at reasonable cost.

A busbar joint is much more complex as commonly considered. The performance is a combination of busbar material, coating,clamping hardware and maximum temperature. I can confirm that in US silver is preferred, at least on Cu, whereas the rest of the world prefers other coatings. Some of our...

At 15hp drives rarely use IPMs. More likely the drive uses a PIM - a module containing all power semiconductors including the input rectifier. But often in this power class the driving circuit is not done by isolated drivers but by level shifters (similar like in a IPM, but outside the module)...

I'm afraid for this size you have to expect at least twice the time estimated by DPC.

With 5800 kVA it is unlikely that these transformers power public distribution, lighting or drives. Maybe the load is some process equipment. In this case it is beneficial that with an ungrounded secondary there are no large fault currents in case of an insulation failure. However, insulation...

Please post the diameter of the pole face and the thickness of the package as well as the nameplate of the rectifier. With this information it is feasible to find an equivalent device.

Also consider regions outside Amercia: 690 V is common in European heavy industry. That is the reason why a lot of equipment is available for this voltage class, also from US-based suppliers.

Some more information: Infineon will not discontinue all 2nd Gen. IGBTs in 62mm. One chip variant for fast switching is still marked as active: FFXXXR12KS4 (XXX: nominal current in A) See...

The device initially used in the Stromag servo drive is a first generation IGBT. Currently the manufacturers are selling 7th generation devices. The cross reference list from Semikron is helpful, but also the suggested replacements are already discontinued (2nd generation IGBTs). When buying...

Beside the lack of power, I have never seen aluminum being melted by an arc furnace. Small induction furnace would be a reasonable choice.

I'd recommend to look for other materials. BeO has been banned for most applications due to severe health risks.

For spikes I'd regard a linear supply as quite robust, but for brownout a switchmode power supply will provide an advantage.

In AC-controllers there is no commutation and as a consequence there are no notches.

So the reactances could be a magnetic amplifier for power control as one of their further connections are going to the main transformer.

Yes, you are right. Anode voltage is provided by another rectifier. The reactances might a magnetic amplifier /transductor maybe for power control. But I do not see where the output is connected beside the meter.

Hi CelsoSC, comparing the data you provide with the schematic shows some inconsistencies in regard to power rating and tube used. 100 KW vs. 50 kW and RS3020CJ vs. RS3060CJ. Nevertheless the question can be answered as follows: The transformer PN#13572 steps up the voltage to several kV to...

The harmonics table provided by the OP looks like the typical spectrum on the input line. So, there is no justification to calculate the motor derating by this as done by Parchie.

As the NP control refers to the NP of the inverter, it is unlikely that there is a risk for the motor. Severe unbalance her would harm the inverter. From my point of view a good inverter control should not rely on on a detailed motor model going beyond nameplate data. My view on this is clear...

Parchie, if the fuse could conduct 600 A continous over longer periods, what is the reason that Eaton doesn't sell it with 600 A nominal current ?