if you have a pf of 0.8pf 3phase and 1.0pf 1phase is it bad. and what is the acceptable range.the device is a generator. of a capacity of 900kva 3phase 60hz @480vac.
gideon
Started by
Guest_Anonymous_*
, Jun 05 2005 06:40 AM
3 replies to this topic
#2
marke
-
- Moderator
-
- 2,620 posts
Posting Freak
- Gender:Male
- Location:Christchurch, New Zealand
Posted 05 June 2005 - 08:38 AM
Hello
The optimium power factor is 1.0 - you can not go higher.
Any power factor less than 1.0 will impact on the "system" efficiency.
It is common to target a power factor of 0.95 or better.
In the case of your generator, a lower factor of 0.8 will reduce the KW that you can load the generator up with. Your 900KVA generator will be fully loaded by a 720KW load at a power factor of 0.8, but 855KW with a power factor of 0.95
There will be more KW wasted in the alternator, transformer and cables at a pf of 0.8
Best regards,
The optimium power factor is 1.0 - you can not go higher.
Any power factor less than 1.0 will impact on the "system" efficiency.
It is common to target a power factor of 0.95 or better.
In the case of your generator, a lower factor of 0.8 will reduce the KW that you can load the generator up with. Your 900KVA generator will be fully loaded by a 720KW load at a power factor of 0.8, but 855KW with a power factor of 0.95
There will be more KW wasted in the alternator, transformer and cables at a pf of 0.8
Best regards,
Mark Empson | administrator
Skype Contact = markempson | phone +64 274 363 067
LMPForum | Power Factor | L M Photonics Ltd | Empson family | Advanced Motor Control Ltd | Pressure Transducers | Smart Relay | GSM Control | Mark Empson Website | Soft Starters
#3
Guest__*
Guest__*
-
- Guests
Posted 05 June 2005 - 02:32 PM
how much of power output percentage is loss at 0.8 from the optimum 1.0.how bad is the generator performing in terms of percentage. thanks.
#4
marke
-
- Moderator
-
- 2,620 posts
Posting Freak
- Gender:Male
- Location:Christchurch, New Zealand
Posted 05 June 2005 - 10:48 PM
If your generator is rated at 900KVA and your power factor is 0.8, then your maximum KW load is 900 x 0.8 = 720KW
You are operating at 80% of maximum Generator Power.
Best regards,
You are operating at 80% of maximum Generator Power.
Best regards,
Mark Empson | administrator
Skype Contact = markempson | phone +64 274 363 067
LMPForum | Power Factor | L M Photonics Ltd | Empson family | Advanced Motor Control Ltd | Pressure Transducers | Smart Relay | GSM Control | Mark Empson Website | Soft Starters
0 user(s) are reading this topic
0 members, 0 guests, 0 anonymous users
