Consumption lamps with ampoules G23 G24 * GX24 * and 2G *!
-
- Moderator
- posts: 79117
- Registration: 10/02/03, 14:06
- Location: Greenhouse planet
- x 10973
Thank you for not saturating all the topics talking about electrical tests...
0 x
Do a image search or an text search - Netiquette of forum
-
- I understand econologic
- posts: 81
- Registration: 18/02/08, 22:48
-
- Moderator
- posts: 79117
- Registration: 10/02/03, 14:06
- Location: Greenhouse planet
- x 10973
1W more on 17W?
It doesn't seem too strange to me, does it?
Otherwise a current clamp poses the same cos phi problems because it is unable to take it into account...
It doesn't seem too strange to me, does it?
Otherwise a current clamp poses the same cos phi problems because it is unable to take it into account...
0 x
Do a image search or an text search - Netiquette of forum
-
- I understand econologic
- posts: 81
- Registration: 18/02/08, 22:48
delnoram wrote:Last tests to date:
1 fluorescent tube (often wrongly called neon) 36W 1.2meter
Original mounted with a 0.047 µf capacitor
Conso 44W (0.4A x 228V x cos (phi) 0.48)
Mounted with 1 capacitor (start) of 4.7µf
consumption 34W (0.19A x 228V x cos(phi)0.78)
i.e. 10W of gain and a reduction of half of the current debited by the wires.
Bonjour à tous
(to delnoram) I'm a rookie & I struggle to understand the logic of your calculations....
I naively believed in the supremacy of UxI=P and here comes this "cos phi"
Why do we care about cos phi? Doesn't the individual's EDF meter count the kW based on the amperage alone ("active" power if that's its name)?
My calculations (according to multimeter measurements) are basic
36W tube with original 0,047uf condo:
0,44A x 230v = 101W
36W tube with 2 parallel 25uf condos (total 50uf):
0,2A x 230 = 46W
Isn't that fair?
Please, what did I not understand?
And why multiply by cos phi?
Also, I read somewhere that the closer the cos phi is to 1 the better.
In your calculations the closer it is to 0 & the lower the power
Please explain to me....
Thank you so much.............
0 x
If there is no miracle solution, then let's fire all the woods.
-
- Similar topics
- Replies
- views
- Last message
-
- 20 Replies
- 17136 views
-
Last message by izentrop
View the latest post
04/01/17, 11:16A subject posted in the forum : Electricity, electronics and IT Hi-Tech, Internet, DIY, lighting, materials and new
-
- 8 Replies
- 9467 views
-
Last message by chatelot16
View the latest post
17/07/16, 23:02A subject posted in the forum : Electricity, electronics and IT Hi-Tech, Internet, DIY, lighting, materials and new
-
- 3 Replies
- 10136 views
-
Last message by dirk pitt
View the latest post
25/04/14, 21:52A subject posted in the forum : Electricity, electronics and IT Hi-Tech, Internet, DIY, lighting, materials and new
-
- 3 Replies
- 8539 views
-
Last message by moinsdewatt
View the latest post
30/01/14, 21:29A subject posted in the forum : Electricity, electronics and IT Hi-Tech, Internet, DIY, lighting, materials and new
-
- 0 Replies
- 6280 views
-
Last message by Christophe
View the latest post
27/01/14, 12:47A subject posted in the forum : Electricity, electronics and IT Hi-Tech, Internet, DIY, lighting, materials and new
Who is online ?
Users browsing this forum : No registered users and 206 guests