- This topic has 42 replies, 12 voices, and was last updated 9 years, 3 months ago by
.
-
Posts
-
Good info, thanks for sharing.
I understand that the requirement in Brazil is 0.92, but I do not have access the the penalty.
Do you plan to occasionally update the spreadsheet?
“Knowledge not shared is knowledge wsted.”
sinnadurai sripadmanaban said:
1)Should we disconnect capacitor bank when powered by a generator?.
2)Can somebody give ratings of capacitors for starting(reducing starting current) induction motors for various sizes of motors(hp/rpm)?.
3)Can somebody give ratings of capacitors for pfc of individual motors of different hp/rpm
Thanks
sinnadurai sripadmanaban said:
1)Should we disconnect capacitor bank when powered by a generator?.
2)Can somebody give ratings of capacitors for starting(reducing starting current) induction motors for various sizes of motors(hp/rpm)?.
3)Can somebody give ratings of capacitors for pfc of individual motors of different hp/rpm
Thanks
1) Capacitor banks are connected to correct the PF in the system,if the pf is low, than for the same load the ampere would be higher.If your load is always below fulload or tripping treshold than its ok you may disconnect the pf bank.
2) Caps are not used for reducing starting current.
3) Ratings of capacitors for pf correction can only be determined by knowing your existing pf and to what pf you want to improve to.
Juan Carlos said:
By the rules in Brazil, users supplied at voltages greater that 2.3 kV (group A) must have their PF verified by the utility in a mandatory and permanent way (art. 34, reg. 456/00). Users supplied at voltage lower than 2,3 kV (group B) can measure their PF in a facultative way. If that PF is lower than 0.92 (inductive or capacitive), reactive energy consumption and demand are mesure and charges apply (Art. 49, reg. 456/00). Furthermore, according to art. 68, reg. 456, users from group B can be charged by their reactive energy and demand, if their PF is lower than 0,92 during a minimum period of 7 days. From my point of view, if utilities adopt electronic meters to also register the PF of residential users, there are no regulation that don't allow them to charge us by the reactive energy. So, the end is near… Are you agree?
vary vary nice example of powar fector
This is quite enlightening. I didn’t know that some countries impose a certain penalty when you consume too much energy.
Hi,
Are you working for or own the company called Sri Enterprises? If so, i would like clarify some details. Could you please provide your contact details?
Hi,
Are you working for or own the company called Sri Enterprises? If so, i would like clarify some details. Could you please provide your contact details?
Hi, I was wondering where I could find the sources for the information in the spreadsheet for the current year, 2013? Thanks!
Hi everyone!
1. I would like to ask if which is better to install capacitor bank is it in the Main line or per motor/per distribution? What will be the benefits.
2. If there is no application or rebates for correcting the power factor, is there any savings for correcting the KVAR in the motor. Can you please provide the formula if there’s any?
Thank you
hello Mr Ali,
I am Jason from Beijing, China. I work for SNTA Energy-Efficient Electric Co., Ltd. The company is specializing for manufacturing series of reactive power compensation device to improve the power factor and control the harmonics. In fact, we have SNTA 1008 series Power supply safety purifying plant to improve the power factor and control the harmonics. The equipment can detect the power factor of various equipment for a hospital. As you know, the equipment of the hospital have a high requirement for the precision. But the unstable current、voltage will affect the precision. Our Equipment will help to control the harmonics and sustain the voltage. If you have interest and want to know more, please contact me by mail: liubaoyong2008@163.com
Hi Mr. Richard,
For your first question, both of the two ways you mentioned to install capacitor bank is ok. It can be called local reactive power compensation. The capacitor bank can be installed in the main line or per motor/per distribution. The compensating capacity will be the difference.
For the second question, there is application and rebates for correcting the power factor and of course, there is saving for correcting the KVAR in the motor. I work for a company who is specializing in manufacturing reactive power compensation devices, APF(active power filter) and STATCOM to improve the power factor and efficiency. I am sorry that at present we do not have the formula information.
If you have any other queries, please contact me: liubaoyong2008@163.com
I will be happy to reply you .
Dear All
Any body required capacitor, Capacitor bank and APFC panels and Harmonic Reactor .Please feel free to
contact me.Regards
S.Ramasubramanian
+91-9843143301
Email id:s.ram1091power@gmail.com
I see that your topic is of interest and most participants working in the field, meeting in reality phenomenon. As a novelty for Romania, inductive reactive energy, a Power Factor
less than 0.92 or 0.65, are billed hourly rates established by National Regulatory Authority in Energy, geographically and voltage levels of the National Energy System,
for example, an average price of 1.4 Euro / MVArh for PF (hourly) of less than 0.92 and 3 * 1.4 Euro / MVArh. The rule applies only to electricity consumers endowed equipped with intelligent metering systems dispatchable without compensation decisions PF consumer costs increase efficiency and lower energy consumption. Such end users are obliged to invest in efficiency projects consumption, investments quickly recover and make a safe return after recovery.
We have a solution thats better than regular capacitor bank, ,KVAR products is build to reduce kw,amp and optimize PF at the load in the right amount. for more information please feel free to contact me over Skype or in my email..
SKYPE ID: johnfouere
email: jf@kvar.cl
- You must be logged in to reply to this topic.