Kwh consumption using 2 CTs and 2 PTs
Kwh consumption using 2 CTs and 2 PTs
(OP)
hello to all,
i would like to know the correct billing multiplier for the following:
our tenant has installed a GE V-63-A 480V check meter, with 2 CTs rated 350:5 and 2 PTs rated 240:480. our system is 240 volts line-to-line.
thanks in advance to your replies
dave.






RE: Kwh consumption using 2 CTs and 2 PTs
240/480=.5
7x.5=35
Your multiplier is 35
Bill
--------------------
"Why not the best?"
Jimmy Carter
RE: Kwh consumption using 2 CTs and 2 PTs
so the no. of CTs and PTs have no effect to the multiplier?
for 3 CTs and 3 PTs i assume the same procedure in getting the multiplier
dave.
RE: Kwh consumption using 2 CTs and 2 PTs
I am assuming that your tenant is using a three wire delta system and a more common meter connection with one pass of the load cables through the CTs.
Some instances when the multiplier is not the product of the CTs and PTs:
For a check meter, they may be metering two phases and assuming a fairly balanced load. The multiplier would then be CT x PT x 3/2.
Some schemes pass the cables through the CTs more than once, or pass one cable through both CTs.
If your connection is not straight forward, you should consult a metering handbook.
Bill
--------------------
"Why not the best?"
Jimmy Carter