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The IGBT practically blown off the board, some traces destroyed. Questions: Does the SK-R1-MCB1-PF755 board control the firing of the power electronics? Would it be UN-advisable to test the mother board in an identical frame? I'm unsure of the architecture of this drive The HIM is still...

Has anyone ever had an E300 module that WILL NOT separate. The control (middle) module will not separate from the Base module. The plastic slide is down but is offering a lot of resistance. Also can anyone identify the error on this module...

One-off repair.......YES The sensor/controller is connected into an outdoor splash pad / fountain. The display can be shut down automatically when the wind speed gets to high. It would be nice to find the original spec sheet so I had something to compare to. Is it a switch or is it linear...

Was hoping someone might assist with a part identification. The sensor appears to be an Allegro and a Hall Effect. I'm just not certain of the specs. to replace or change. It's to a wind speed sensor. Any help would be appreciated! Thanks! TM...

Its really a simple question. I want to scale the 4-20mA output to a desired total kW reading of my choice. It has everything to do with the CT, if 100% analog output does not occur until 100% output of the CT. Hence my question on scalability. I worked with an old GE meter that allowed...

Is it possible to scale the analog output to a lesser value than the full current of the CT's. I am using a Acuvim-II meter with 400 amp CT's I would like to scale the analog output down to 60kW total power, without loosing resolution. I'm using the instrument to monitor and compare the power...

If I'm not misteaken, the manufacture of the second was from General Semiconductor, now Vishay. Still no cross. Thanks for everyones input.

I guess only one file at a time.http://files.engineering.com/getfile.aspx?folder=9751b455-2a2f-4010-a8be-8b265ce7fb7e&file=s427.jpg

The attached are in SMA packages. I can't find any information on the "CODES" to cross referance. Can anyone help?

Thanks Quality! I would like any information you have on this topic. I'm at tmurphy@moline.il.us Thank You!

Oh yea, the water ph ranges from 7.0 to 7.6

Gentlemen, Your discussions have been most informing. Let me start off with the reason why the question was posted. At present, we are using gas to chlorinate two waste water effluents. We are entertaining the idea of changing over to hypo. The water delivery system is already in place and...

We are needeing to replace a 12.25" duplex piston / plunger pump with 4" inlet and discharge. The process in un-screened primary domestic waste sludge. Is this the right pump for the application? How will a diaphram pump compare to a plunger in this application? This is a high grit and...

Hi, I was wondering if anyone has had any experience using vacuum injection as a method to supply Hypochlorite? I would like to utilize some of the existing CL2 components while converting from Gas to Hypo. W&T offers a chlorinator for such use, LVN-2000. In reading the literature, the pit...

My question is about TVSS manufactures and technologies. We are in the process of replacing / upgrading the main services into our Waste Water treatment plant. The designing engineer has specified a sole manufacture for the TVSS equipment. The only major difference I find between the device...

Motor and pump cooling application: Would it be safe to assume that the difference between brake hp and water hp equals the power loss through the application? This loss will equal the heat that the pump and motor will create and must be removed / cooled. Example: 100% duty cycle. Water hp...

Is there a minimum motor HP size where reduced voltage, soft start or other controller should be used rather than across the line starter. This is assuming 3 phase 460 volt motors. Also assume the driven load does not require a reduced tork start. Thanks! TM

itsmoked is right, flow rate is inferred by the level change in the wet well. Bris is right about responding to supply rather than demand. The question was however, to adjust the speed of the pumps together when more than one is required, or adjust the speed of one while the other(s) are at 100%

Yes Artisi, all 3 pumps are discharging into a common line.

Gentlemen; Please help me out here. What is the best operational sequence to operate 3 identical centrifugal pumps which are driven with VFD's. This is in a sewage application so the load varies. In single pump mode everything is straight forward. The speed will vary between two level points...