Burden on CT PT

The first step is to carry out an acronymectomy.

Get the manufacture to test it for you.

I don't think the burden is part of the CT or PT. It pertains to other connected items, and thus cannot be tested as part of the CT or PT itself. I'm not sure it even applies to PTs at all.

CT = current transformer
PT = potential transformer

You don't. It is something that you design in by varying the amount of iron and copper before you start manufacturing, you then test according to established standards to see if your final product meets the design goals. If not then adjust your design and try, try again.

Dear Mr.RAMConsult,

Very True.

Thanks,

DHAYANANDHAN.S

Burden test is to ensure the connected burden to CT is with in the rated burden, identified on the nameplate.

Injected the rated secondary current of the CT, from CT terminals towards load side by isolating the CT secondary with all connected load and observe the voltage drop across the injection points. The burden VA can be calculated as

Burden VA = Voltage drop x rated CT sec. Current.

The calculated burden should be less than rates CT burden.

Note:-

• Ammeter selector switch should be at respective phase during test.
• High impedance relays shall be shorted during the test.