machasman
Member
- Location
- upstate NY
I am replacing GE M_90 Watthour meters with Powerlogic's PM series meters. I have 4 to replace on 2 indoor GE substations (circa 1950's). The ct's are not accesible without racking out the main breaker. The schematics are showing A and C phase ct's on the load side of the main with the polarity towards the Line (bottom of breaker) The B phase ct is on the line side of the breaker with its polarity towards the load (top of breaker) I cant explain this however it appears that my meter is in fact working please check my math on this
474V X 96A X 1.732 / 1000 = 78.81 KVA
78.81 X (PF) .865 = 68.17 KW
These are the actual numbers from the meter
Anyone please explain the CT orientation and let me know if I can trust these numbers
Thanks in advance
474V X 96A X 1.732 / 1000 = 78.81 KVA
78.81 X (PF) .865 = 68.17 KW
These are the actual numbers from the meter
Anyone please explain the CT orientation and let me know if I can trust these numbers
Thanks in advance