Medium voltage Metering
Medium voltage Metering
(OP)
Good day guys,
I would like to know how to setup energy meters for Medium voltage lines. I searched on google but couldn't find any meter where i can feed medium voltage directly. Can some one help me out how to accomplish this task.
I have 7KVA line 2500A And i want to install energy meter for this line. In addition the meter should have communication capability so that the data could be displayed remotely on some computer.
Thanks in anticipation,
Best Regards,
I would like to know how to setup energy meters for Medium voltage lines. I searched on google but couldn't find any meter where i can feed medium voltage directly. Can some one help me out how to accomplish this task.
I have 7KVA line 2500A And i want to install energy meter for this line. In addition the meter should have communication capability so that the data could be displayed remotely on some computer.
Thanks in anticipation,
Best Regards,






RE: Medium voltage Metering
RE: Medium voltage Metering
RE: Medium voltage Metering
RE: Medium voltage Metering
You meter multiplier will be 36000. (60 x 600)
You will want revenue class CTs rather than protection class CTs.
Many KWHr meters for use with metering transformers have 5 Amp and 120 Volt inputs as standard. The indicated KWHrs must be multiplied by the multiplier (36000) for the true consumption.
Some of the newer meters have the capability to have the multiplier programed in and will indicate the correct KWHrs.
There are a few exceptions which probably don't apply here.
Bill
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"Why not the best?"
Jimmy Carter
RE: Medium voltage Metering
So if you are not looking for billing accuracy then you can save on the meter. You can also save some on the CTs by using protection class CTs instead of metering class. There are some vendors that I am familar with for both type of meters
Revenue meters - Transdata, Itron
Panelboard Meter - Bitronics, Electro-Industries, Schneider Electric (Ion Meters)
Andy
RE: Medium voltage Metering
Thanks again.
RE: Medium voltage Metering
Thats a good way to destroy your instrument if the CT is installed on a system with a high fault level. Metering CTs are designed to saturate and limit the secondary current during a through fault to protect the instrument; protection CTs are designed to remain accurate ratio at many multiples of their rating and most meters aren't designed to withstand that kind of overload.