Adding a small burden to existing CT
Adding a small burden to existing CT
(OP)
Power & Protective Relaying Friends,
Customer has existing 5-amp instrumentation circuit from CT's. I have a split-core 5-amp to 0.333VAC (safe CT) device that will add about 350 micro-VA of burden when connected to its load. Both price and convenience make this a good solution. I don't have to buy a set of 2000:5 CT's (the little split-cores are cheap) and I don't have to shut down the board to install.
Can you imagine the addition of this small burden causing a problem in any situation? Most of the CT's I've seen in place are rated at least a couple of VA.
Thanks in advance for your opinions...
Old Dave
Customer has existing 5-amp instrumentation circuit from CT's. I have a split-core 5-amp to 0.333VAC (safe CT) device that will add about 350 micro-VA of burden when connected to its load. Both price and convenience make this a good solution. I don't have to buy a set of 2000:5 CT's (the little split-cores are cheap) and I don't have to shut down the board to install.
Can you imagine the addition of this small burden causing a problem in any situation? Most of the CT's I've seen in place are rated at least a couple of VA.
Thanks in advance for your opinions...
Old Dave






RE: Adding a small burden to existing CT
RE: Adding a small burden to existing CT
It just always feels better to have somebody else agree with one's opinion on new stuff.
It's not a parallel issue, customer is adding some third-party metering to do some demand profiling. It's a nice little CT he found, made by Magnalab.
Good on y'all,
Old Dave