Power Meter

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RLMJR

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I will replace a 750 kVA 208/120v pad mounted transformer with 1500kVA 208/120v pad mounted transformer due to change in load requirement, the existing demand power meter has a split core current sensor rated 3200A connected to the secondary bus of the existing transformer , do i need to upgrade also the metering system based on the 1500kVA transformer? or is it ok to re use the existing? Thank you in advance for the answers.
 
After the system change, what will the load through the metering system be? Will this exceed the rating of the metering system?

After the system change, what is the available short circuit current? Does this exceed the metering system rating?

1500 kVA at 208/120 is 4200A, which exceeds the 3200A rating of the existing metering system, but you've provided no information about what the load is.

-Jon
 
winnie said:
After the system change, what will the load through the metering system be? Will this exceed the rating of the metering system?

After the system change, what is the available short circuit current? Does this exceed the metering system rating?

1500 kVA at 208/120 is 4200A, which exceeds the 3200A rating of the existing metering system, but you've provided no information about what the load is.

-Jon
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The loads are residential housing owned by a company the loads are approx 1300 kVA w/c is 3600 amps,I search from emon d mon catalog but their max meter available is rated 3200 only, is there any special order available from emon d mon so i can order a 4000 amps or higher rated meter with split core sensor package. Thanks in advance for the answers
 
RLMJR said:
The loads are residential housing owned by a company the loads are approx 1300 kVA w/c is 3600 amps,I search from emon d mon catalog but their max meter available is rated 3200 only, is there any special order available from emon d mon so i can order a 4000 amps or higher rated meter with split core sensor package. Thanks in advance for the answers
Click to expand...
Look at the rating factor on the CTs. Use it. Its possible the rating factor could be 3@55C, which would put the CTs at 9600A.
you go too large, you will lose revenue at the light loads unless your using extended range CTs.
 
May i know the meaning of G= expanded feature package: does this means it can be be use in above 3200 amps , this was snipp from emon d mon catalog, btw i dont have access to contact the emon d mon directly that is why i am asking help in this group. If someone has experinece in metering from emon or other brands1670991691101.png
 
See if this helps..

Class 3400 - The Class 3400 is the most advanced dual-protocol smart meter available on the market
today. Features include advanced energy displays, on-board set up capabilities and dual protocol
capabilities, but can also provide an optional expanded feature package which gives the user load control
capabilities for load control/shedding, two external meter inputs for water, gas, BTU, etc. meters & two pulse
outputs for kWh and kVARh. Class 3400 meters are supplied in NEMA 4X enclosures with JIC steel enclosures optionally available.

 
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