UPS spec - help required.

[DPG]

Morning all, and happy Friday!

I've been asked my advice on what UPS would be suitable to run an ICT machine (ICT=In Circuit Test, it's machine that tests electronic PCB assemblies).

Now it is fed from a standard 3 phase supply, but I am confused a little by the rating plate - I've attached a picture (hopefully!) of the plate. Looks like it will need a standard 3 phase UPS rated at 35A, but the lower part of the spec plate shows 220V 18A, even though the 3 phase box is ticked.

Any thoughts? Apologies if my inexperience on these things is showing!

Cheers,
Daz

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[LeeH]

Yeah, that's confusing.

Can you get them to run it up and put a clamp on around each line? (Or how many phases you find when you open it up.)

 

[LeeH]

....and the last time I had to spec a UPS I just called APC UK. Got them to do the donkey work.

That's some serious cash though, especially if the machine needs to finish its full cycle. Could be a long run time at high load.

 

[SparkyChick]

I'd say the top half of the plate shows possibilities and maximums whilst the bottom half shows 'as configured'.

But I agree with @LeeH clamp it to confirm and get APC doing the donkey work for you. I've found them very helpful in the past when I've had to source server room UPSs.

 

[DPG]

....and the last time I had to spec a UPS I just called APC UK. Got them to do the donkey work.

That's some serious cash though, especially if the machine needs to finish its full cycle. Could be a long run time at high load.

Yeah I imagine it's going to cost some. Will get them to ask APC I think. Cheers.

 

[UNG]

At those sort of loads it might be a UPS and backup generator depending on the run time and resilience required

 

[DPG]

I'd say the top half of the plate shows possibilities and maximums whilst the bottom half shows 'as configured'.

But I agree with @LeeH clamp it to confirm and get APC doing the donkey work for you. I've found them very helpful in the past when I've had to source server room UPSs.

I think you are probably right - didn't expect such a big difference in the 2 figures though. I will get them to see what APC say - should be easy enough for them eh!

Cheers,
Daz

 

[DPG]

At those sort of loads it might be a UPS and backup generator depending on the run time and resilience required

There's a backup genny but the machine drops out and has to go through a re-start process before the genny can start up. Often get short duration drop-outs (a bit out in the sticks!). UPS wouldn't need to run for more than 10 minutes I reckon.

 

[SparkyChick]

This may be interesting reading...

Agilent E1135C PDU Operating and Service Manual

 

[DPG]

Already read it It still didn't clarify the spec plate completely though, unless I didn't read it properley!

Daz

 

[SparkyChick]

I only skimmed it, but I didn't see anything about the plate either.

 

[UNG]

There's a backup genny but the machine drops out and has to go through a re-start process before the genny can start up. Often get short duration drop-outs (a bit out in the sticks!). UPS wouldn't need to run for more than 10 minutes I reckon.

Changes the OP a bit then, having said that is the generator man enough to run what is connected to it seen a lot of sites expand beyond the generators capability and one of them was a hospital

 

[DPG]

Changes the OP a bit then, having said that is the generator man enough to run what is connected to it seen a lot of sites expand beyond the generators capability and one of them was a hospital

Yes, the genny is up to the job and has a suitavbly large fuel reservoir.
Daz

 

[Pete999]

Morning all, and happy Friday!

I've been asked my advice on what UPS would be suitable to run an ICT machine (ICT=In Circuit Test, it's machine that tests electronic PCB assemblies).

Now it is fed from a standard 3 phase supply, but I am confused a little by the rating plate - I've attached a picture (hopefully!) of the plate. Looks like it will need a standard 3 phase UPS rated at 35A, but the lower part of the spec plate shows 220V 18A, even though the 3 phase box is ticked.

Any thoughts? Apologies if my inexperience on these things is showing!

Cheers,
Daz

View attachment 35599

View attachment 35600

Are talking about a "no break" setup?

 

[DPG]

Are talking about a "no break" setup?

Yes.

 

[DPG]

It doesn't tolerate 'unclean' mains failures and has suffered before causing production down time (£££).
I've also suggested maybe some sort of power conditioning/surge arrestor.

Daz

 

[westward10]

It doesn't tolerate 'unclean' mains failures and has suffered before causing production down time (£££).
I've also suggested maybe some sort of power conditioning/surge arrestor.

Daz

You require a "floating" system which means it will be permanently using the ups output so there is no loss on mains failure.

 

[Pete999]

Yes.

Then the single phase element may be the input from the standby set

 

[DPG]

You require a "floating" system which means it will be permanently using the ups output so there is no loss on mains failure.

Yes indeed. An on-line system.

 

[DPG]

Then the single phase element may be the input from the standby set

No single phase input. Machine is configured for 3 phase supply.