Meter exchange - CT

[gazdkw82]

I have an ND CUBE 400 meter to exchange next week. Its a like for like change. I can isolate the supply to the meter easily with the removable cartridge fuses, however the circuit the meter is metering cannot be isolated. I am not sure what risk is posed with the CT's. They are terminated into a terminal block so i can just pull that block out and insert into the new meter, i just thought i would check i as am unsure if this is the standard with CT's

 

[plugsandsparks]

Depends on the CT type as some (iron core) can produce very high voltages at open circuit, there should be a shorting block installed to allow for shorting the CTs secondary before removing the connections. Best check the CT type first before pulling it.