Greetings
A few questions regarding 4 wire / 3 phase delta metering ?
I found an example that stated: assume an 80% pf and then
KW = EI* 1.73*cos(37)
I see that
Then it states, ?Element 1 of our KVAR meter will measrue: (?)(Eab*Ia*cos(83) + Eab*Ib*cos(23))
And Element#2 will measure: Enc*Ic*cos(53)
The angles 23, 83, and 53 were dropped in like it was obvious.
How does one calculate (or get) those numbers ? were they obtained from the pf = 0.80?
2)
Can you point me to a resource explaining how to layout phasors for metering and how to interpret the phasors shown in metering books?
3)
Can you point me to some good resources explaining how to develop the calculations for power with regards to inside a 3 phase 4 wire delta meter?
4) Last how can I calculate the lost power (difference in metered power) when a meter is installed incorrectly?
Thanks so much!
Sparky
A few questions regarding 4 wire / 3 phase delta metering ?
I found an example that stated: assume an 80% pf and then
KW = EI* 1.73*cos(37)
I see that
Then it states, ?Element 1 of our KVAR meter will measrue: (?)(Eab*Ia*cos(83) + Eab*Ib*cos(23))
And Element#2 will measure: Enc*Ic*cos(53)
The angles 23, 83, and 53 were dropped in like it was obvious.
How does one calculate (or get) those numbers ? were they obtained from the pf = 0.80?
2)
Can you point me to a resource explaining how to layout phasors for metering and how to interpret the phasors shown in metering books?
3)
Can you point me to some good resources explaining how to develop the calculations for power with regards to inside a 3 phase 4 wire delta meter?
4) Last how can I calculate the lost power (difference in metered power) when a meter is installed incorrectly?
Thanks so much!
Sparky