Power Factor - Confuse

[Anonymous user]

Hi,
I am having a project that need UPS has power factor higher 0.95.
I read documents and know that have two types of power factor. Input power factor and output power factor.
So, what is difference between them?
What have I consider when choose an UPS?
Thank you so much.

[Anonymous user]

Thank you so much Mr. i picKed a winna but the document you gived does not have any infomation about input power factor and output power factor.
Can you give me more exactly explaination?

[Anonymous user]

Hi Ms. I picKed a winna,
Thank you so much for your help.
In Vietnam, maybe do not have the UPS with prefix is RMX.
So, Hope you will do a favor for me in the next time I post a question.
Best Regards,E

[Anonymous user]

Can anyone help me?

[BillP]

see if this helps at all -> http://www.apcmedia.com/salestools/SADE-5TNQYL_R1_EN.pdf

[BillP]

that is ms. i picKed a winna 😉

i did some research here with a UPS expert.

output power factor is the difference between watts and VA. for example, our Symmetra LX UPS can do 16000 VA but only 12800 watts. you'd size your load based on the watt rating usually. VA is the apparent power and watts are the real power. input power factor is the power factor of the Power Factor Correction (PFC) stage of an online UPS. line interactive models do not have an input power factor because it just passes power straight through to the load based on the design. so the input power factor would just be the load's power factor. output factor of the UPS is what is the most important for sizing a load.

[Anonymous user]

Thanh you so much Ms. i picKed a winna :). Please forgive me 'cause I am a newbie.
I understand more clearly now. All I need seem have to know what is Power Factor Correction.
So, another question please: do you know what is type of UPS has power factor higher than 0.95?
I have seached many times on Internet but can not get an expect result?
Thank you so much again.

[BillP]

no problem 🙂

we don't have many UPSs with an output power factor of 0.95 or higher. Some of our three phase UPSs do have a unity factor.

can you clarify if you are looking for a single phase or three phase power application? then i can check further.

[Anonymous user]

Sorry you, Ms. i picKed a winna. I live in Vietnam so our time is difference with you.
I am looking for ups 3KVA and 5 KVA with 1 phase input and output. And 15KVA with 3 phase input and 3/1 phase output (or only 3 phase output).
All UPS must can be mounted on rack cabinet.

Thank you so much. Hope to receive your help soon.

[BillP]

i understand. no problem 🙂

i had to ask around a bit. majority of our Smart UPS lines range between 0.7 to a 0.8 power factor. any UPS that we have with the prefix SMX (which I am not sure those are available in Vietnam) are 0.95. Any SURT is generally 0.7 as well.

We also have Symmetra LX with a power factor of around 0.8 but I am told it depends if you input 3 phase or single phase to it where it can then differ depending on the setting.

what i suggest you might try to see what you get, is try our UPS selector. http://www.apc.com/tools/ups_selector/index.cfm

input your data into there and let me know what it returns. when i know what it suggests for you and in what configuration/SKUs, i can then verify if the power factor would meet your requirements.

[BillP · Accepted solution]

you're very welcome.