Author Topic: where does one buy a 600VDC 10kW power supply?  (Read 7451 times)

0 Members and 1 Guest are viewing this topic.

Offline ogden

  • Super Contributor
  • ***
  • Posts: 3731
  • Country: lv
Re: where does one buy a 600VDC 10kW power supply?
« Reply #25 on: February 05, 2020, 12:53:35 pm »
Yes putting supplies in series can be a problem. Parallel operation would be preferable as it makes things easier.
Parallel is no better than series. Consider series or parallel configuration only if such mode of operation is "officially supported". What about using two different supplies - one for max voltage and another for max current tests?
 

Offline PTR_1275

  • Frequent Contributor
  • **
  • Posts: 561
  • Country: au
Re: where does one buy a 600VDC 10kW power supply?
« Reply #26 on: February 05, 2020, 01:00:41 pm »
Keysight call it Autoranging. They have a 10kw 750v power supply. Model N8929a
 

Offline SimonTopic starter

  • Global Moderator
  • *****
  • Posts: 18118
  • Country: gb
  • Did that just blow up? No? might work after all !!
    • Simon's Electronics
Re: where does one buy a 600VDC 10kW power supply?
« Reply #27 on: February 05, 2020, 01:34:58 pm »
Yes putting supplies in series can be a problem. Parallel operation would be preferable as it makes things easier.
Parallel is no better than series. Consider series or parallel configuration only if such mode of operation is "officially supported". What about using two different supplies - one for max voltage and another for max current tests?

Yes all of the decent high power supplies have a master/slave mode with the comms ports so that one supply will control a bank of similar supplies. But with parallel connection there are no insulation issues. If you start connecting in series the higher ones in the stack can be well beyond the insulation grade. At these voltages i doubt they are really meant to be put in series at all.
 

Offline Berni

  • Super Contributor
  • ***
  • Posts: 5050
  • Country: si
Re: where does one buy a 600VDC 10kW power supply?
« Reply #28 on: February 05, 2020, 04:51:48 pm »
Some large rack supplies do have features to automatically link them together and make them track, yes long chains of 4 supplies in series are likely not supported, but its pretty common to be able to make them track together for making +/- split rails. Especially when both supplies are identical models rather than two different ones (That way a more powerful one couldn't force current trough the weaker one). If the particular model supports series operation the manual will mention it and show how to wire it up for it.

Sorry didn't know big supplies are mostly power limited. I never worked with PSUs quite this big and the biggest PSU i own is only about 2kW. In the low kW range the supplies i have seen have no power limit and can do both max current and voltage simultaneously, or do have a power limit but can only be reached with about ~40% or more of the max voltage before it hits the current limit.

 

Offline SimonTopic starter

  • Global Moderator
  • *****
  • Posts: 18118
  • Country: gb
  • Did that just blow up? No? might work after all !!
    • Simon's Electronics
Re: where does one buy a 600VDC 10kW power supply?
« Reply #29 on: February 05, 2020, 05:40:36 pm »
All of the rack supplies can be linked. Rather than buy massive ones you can just stack as many as you need or up to a specified maximum as explained in the manual yes.
 

Offline capt bullshot

  • Super Contributor
  • ***
  • Posts: 3033
  • Country: de
    • Mostly useless stuff, but nice to have: wunderkis.de
« Last Edit: February 05, 2020, 09:26:26 pm by capt bullshot »
Safety devices hinder evolution
 

Offline fcb

  • Super Contributor
  • ***
  • Posts: 2135
  • Country: gb
  • Test instrument designer/G1YWC
    • Electron Plus
Re: where does one buy a 600VDC 10kW power supply?
« Reply #31 on: February 05, 2020, 09:28:17 pm »
FuG stuff is great. Kikusui lovely and so pretty.

Talk to Caltest (https://www.caltest.co.uk/) - they are owned by Pacific Power who make some really nice kit.  I've got a 5KW/300V older generation unit here, built like brick karzi's.
https://electron.plus Power Analysers, VI Signature Testers, Voltage References, Picoammeters, Curve Tracers.
 

Offline powerguru

  • Newbie
  • Posts: 1
  • Country: gb
Re: where does one buy a 600VDC 10kW power supply?
« Reply #32 on: February 06, 2020, 11:03:11 am »
TDK-Lambda have a nice Genesys+ product that have neat auto parallel function  https://www.emea.lambda.tdk.com/uk/products/product-details.aspx?scid=400    A unique, easy auto configuring master / slave paralleling system enables scalable power systems up to 30kW to be configured.  A range of power levels are available that can be scaled if required  .  Also they have GSP  range in 10kW and 15kW versions  https://www.emea.lambda.tdk.com/uk/products/product-details.aspx?scid=1408
 

Offline trobbins

  • Frequent Contributor
  • **
  • Posts: 826
  • Country: au
Re: where does one buy a 600VDC 10kW power supply?
« Reply #33 on: February 06, 2020, 12:10:03 pm »
Simon, you have provided almost zero information about what you may be needing.  Is that because you don't know what you need?  Power supplies can have a myriad of tech specs other than simple max output voltage, and some comment about a max power profile.

Perhaps you could use a manually regulated DC supply using simply a 3ph variac and step up transformer and 3ph rectifier and filter.  That's one end of the spectrum.
 

Offline SimonTopic starter

  • Global Moderator
  • *****
  • Posts: 18118
  • Country: gb
  • Did that just blow up? No? might work after all !!
    • Simon's Electronics
Re: where does one buy a 600VDC 10kW power supply?
« Reply #34 on: February 06, 2020, 02:31:21 pm »
TDK-Lambda have a nice Genesys+ product that have neat auto parallel function  https://www.emea.lambda.tdk.com/uk/products/product-details.aspx?scid=400    A unique, easy auto configuring master / slave paralleling system enables scalable power systems up to 30kW to be configured.  A range of power levels are available that can be scaled if required  .  Also they have GSP  range in 10kW and 15kW versions  https://www.emea.lambda.tdk.com/uk/products/product-details.aspx?scid=1408


Which was the first suggestion and i have a quote.
 

Offline SimonTopic starter

  • Global Moderator
  • *****
  • Posts: 18118
  • Country: gb
  • Did that just blow up? No? might work after all !!
    • Simon's Electronics
Re: where does one buy a 600VDC 10kW power supply?
« Reply #35 on: February 06, 2020, 02:32:20 pm »
Simon, you have provided almost zero information about what you may be needing.  Is that because you don't know what you need?  Power supplies can have a myriad of tech specs other than simple max output voltage, and some comment about a max power profile.

Perhaps you could use a manually regulated DC supply using simply a 3ph variac and step up transformer and 3ph rectifier and filter.  That's one end of the spectrum.

My bosses email said 600V 10kW, that is all I know. Of course there is more to that to a power supply which is why i am asking.
 

Offline DenzilPenberthy

  • Frequent Contributor
  • **
  • Posts: 429
  • Country: gb
Re: where does one buy a 600VDC 10kW power supply?
« Reply #36 on: February 06, 2020, 03:30:05 pm »
You can add Advanced Energy to your list. I installed a 10kW 600VDC power supply from them not too long ago.

Commonly used in plasma systems - sputtering, vapour deposition etc etc.

They make a lot of different types so best to contact them with your requirements...

https://www.advancedenergy.com/products/plasma-power-generators/dc-power-systems/
 

Offline trobbins

  • Frequent Contributor
  • **
  • Posts: 826
  • Country: au
Re: where does one buy a 600VDC 10kW power supply?
« Reply #37 on: February 08, 2020, 10:43:17 pm »
My bosses email said 600V 10kW, that is all I know. Of course there is more to that to a power supply which is why i am asking.
I'd suggest going back to your boss for more details.  If my boss asked me to look in to buying a car with 4 wheels and four doors, I wouldn't start by going on a car forum ....
 
The following users thanked this post: Koen, ogden

Offline SimonTopic starter

  • Global Moderator
  • *****
  • Posts: 18118
  • Country: gb
  • Did that just blow up? No? might work after all !!
    • Simon's Electronics
Re: where does one buy a 600VDC 10kW power supply?
« Reply #38 on: February 09, 2020, 08:33:28 am »
My bosses email said 600V 10kW, that is all I know. Of course there is more to that to a power supply which is why i am asking.
I'd suggest going back to your boss for more details.  If my boss asked me to look in to buying a car with 4 wheels and four doors, I wouldn't start by going on a car forum ....

He is not electrically minded, that is what my job is. I know they won't want to spend a fortune and i can only but advise. I already avoided offering some options because i personally was not happy but i have to show him reasonable options.

All of the decent supplies seem to offer the same things. digital interfaces of various sorts, master slave control modes with the ability to series/parallel same supplies, over voltage lockout useful for locking an over 1kV supply at less than 1kV. Some offer auto power ranging or power flex but many don't. Some have crap warranty and anything useful is an optional and some just give you the works out of the box. While i was originally asked for 600V 10kW I have since managed to establish that actually he wants to work down to 400V and up to 15-16kW and that 21kW would be ideal. So i have investigated units that do power flex/autoranging. The jury is still out as i am waiting for more quotes to come in.

2 of those TDK lamda's in the 15kW variants would be good enough but let's see what else there is. I have been shown some ITECH datasheets of units that look very good and are very cheap but I have also been warned about the quality.
 

Offline trobbins

  • Frequent Contributor
  • **
  • Posts: 826
  • Country: au
Re: where does one buy a 600VDC 10kW power supply?
« Reply #39 on: February 09, 2020, 09:40:29 am »
Usually the application has some technical bearing on what type of power supply is appropriate.  Is this application just a resistive load?
 

Offline mikeselectricstuff

  • Super Contributor
  • ***
  • Posts: 14117
  • Country: gb
    • Mike's Electric Stuff
Re: where does one buy a 600VDC 10kW power supply?
« Reply #40 on: February 09, 2020, 09:50:20 am »
You do have a 3-phase mains supply available, right ?
Youtube channel:Taking wierd stuff apart. Very apart.
Mike's Electric Stuff: High voltage, vintage electronics etc.
Day Job: Mostly LEDs
 

Offline SimonTopic starter

  • Global Moderator
  • *****
  • Posts: 18118
  • Country: gb
  • Did that just blow up? No? might work after all !!
    • Simon's Electronics
Re: where does one buy a 600VDC 10kW power supply?
« Reply #41 on: February 09, 2020, 10:49:34 am »
The application is mostly resistive yes. We don't really need the battery or solar simuations that many supplies offer but if they have it great. Some of the load will be motors like pumps.

Yes 3 phase supply in the factory although they have probably not realised yet that for 20+kW they may need to wire it back to the consumer unit area.
 

Offline trobbins

  • Frequent Contributor
  • **
  • Posts: 826
  • Country: au
Re: where does one buy a 600VDC 10kW power supply?
« Reply #42 on: February 09, 2020, 12:27:34 pm »
Is this meant to be one DC supply, with overcurrent protection distribution to various loads?  Is the DC going to be floating and use an on-line earth fault detector like a Bender?
 

Offline SimonTopic starter

  • Global Moderator
  • *****
  • Posts: 18118
  • Country: gb
  • Did that just blow up? No? might work after all !!
    • Simon's Electronics
Re: where does one buy a 600VDC 10kW power supply?
« Reply #43 on: February 09, 2020, 12:40:44 pm »
Yes one single supply to a single system. I beleive all power supplies i have looked at have a floating output. Is there any reason to ground it? The application is not grounded. what is a bender?
 

Offline fcb

  • Super Contributor
  • ***
  • Posts: 2135
  • Country: gb
  • Test instrument designer/G1YWC
    • Electron Plus
Re: where does one buy a 600VDC 10kW power supply?
« Reply #44 on: February 09, 2020, 12:53:44 pm »
I think he means these: https://www.bender-uk.com/products/insulation-monitoring/isometer_isohr685w

I've come across them in my journeys into EV land.  In my school days bender meant something else.
https://electron.plus Power Analysers, VI Signature Testers, Voltage References, Picoammeters, Curve Tracers.
 

Offline SimonTopic starter

  • Global Moderator
  • *****
  • Posts: 18118
  • Country: gb
  • Did that just blow up? No? might work after all !!
    • Simon's Electronics
Re: where does one buy a 600VDC 10kW power supply?
« Reply #45 on: February 09, 2020, 01:52:04 pm »
No the TDK does not power flex.
 

Offline NiHaoMike

  • Super Contributor
  • ***
  • Posts: 9321
  • Country: us
  • "Don't turn it on - Take it apart!"
    • Facebook Page
Re: where does one buy a 600VDC 10kW power supply?
« Reply #46 on: February 09, 2020, 02:37:05 pm »
He is not electrically minded, that is what my job is. I know they won't want to spend a fortune and i can only but advise. I already avoided offering some options because i personally was not happy but i have to show him reasonable options.

All of the decent supplies seem to offer the same things. digital interfaces of various sorts, master slave control modes with the ability to series/parallel same supplies, over voltage lockout useful for locking an over 1kV supply at less than 1kV. Some offer auto power ranging or power flex but many don't. Some have crap warranty and anything useful is an optional and some just give you the works out of the box. While i was originally asked for 600V 10kW I have since managed to establish that actually he wants to work down to 400V and up to 15-16kW and that 21kW would be ideal. So i have investigated units that do power flex/autoranging. The jury is still out as i am waiting for more quotes to come in.

2 of those TDK lamda's in the 15kW variants would be good enough but let's see what else there is. I have been shown some ITECH datasheets of units that look very good and are very cheap but I have also been warned about the quality.
How about a large 3 phase variac (or even an autotransformer with selectable taps) going into a rectifier and then into a large capacitor bank? Then add some DC contactors (the kind used in EVs) on the output, a rectifier load rated RCD/GFCI on the input, and a bleeder/indicator circuit.

You can also look into EV fast chargers, but I suspect they're designed as current sources and would require a large capacitor bank in order to have any hope of getting a good transient response.
Cryptocurrency has taught me to love math and at the same time be baffled by it.

Cryptocurrency lesson 0: Altcoins and Bitcoin are not the same thing.
 

Offline SimonTopic starter

  • Global Moderator
  • *****
  • Posts: 18118
  • Country: gb
  • Did that just blow up? No? might work after all !!
    • Simon's Electronics
Re: where does one buy a 600VDC 10kW power supply?
« Reply #47 on: February 09, 2020, 04:31:22 pm »
I think we would be best buying an off the shelf solution so that we are covered in terms of safety. I already have enough work as it is and if they employ someone external (we have a person not that he is much more experienced than me in high voltage stuff) then suddenly it's starting to be more hassle and just as expensive and so muh les flexible.
 

Offline trobbins

  • Frequent Contributor
  • **
  • Posts: 826
  • Country: au
Re: where does one buy a 600VDC 10kW power supply?
« Reply #48 on: February 09, 2020, 10:25:45 pm »
Given the application is not distributing the DC then that certainly alleviates a variety of safety concerns. 

And yes if you have no in-house electrical engineering capable of setting up a simplified supply, then a commercial supply that complies with all applicable standards (whether it be for mains connect aspects, or safety to operators, or something related to connectors if you are not using fixed wire to the load equipment) is appropriate. 

I'd suspect that safety related aspects of the total system would need to be competently assessed and documented, as a way to cover identifiable risks, and that mitigating those risks comes back directly to the specs of the power supply just as much as the connection and use of the power within your widget.  Just one example is whether there is active monitoring of the DC rails with respect to an earth fault - the power supply may include that - if not then commercial devices like from Bender can be used for interlocking.
 

Offline Phoenix

  • Frequent Contributor
  • **
  • Posts: 442
  • Country: au
Re: where does one buy a 600VDC 10kW power supply?
« Reply #49 on: February 10, 2020, 04:24:23 am »
We recently got an ITECH regenerative DC supply https://www.itechate.com/, they do plenty of other supplies to and perhaps a bit cheaper than some of the big names. Website isn't great; but their support was pretty good when we had some initial problems with a faulty internal fan causing the unit to trip.

I've also used Magna Power in the past and they were fine too.
https://magna-power.com//
 


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf