Abridgment of 132-kv. shielded potentiometer: for determining the accuracy of potential transformers

The potentiometer principle is well understood. Its application to the determination of the ratio and phase-angle accuracy of potential transformers is not new, but in unshielded form has been limited to about 66 kv. and in shielded form to about 33 kv. The paper describes a shielded potentiometer for 132 kv., which is designed for ultimate extension to 220 kv.