Line current sensors for capacitor switching, load surveying, or protective relaying

Click on photo for graphical representation

The Fisher Pierce Series 1301 high accuracy line post current sensors provide a reliable measuring method for distribution systems from zero to thousands of amperes. The current sensors may be used for capacitor switching, load surveying, or protective relaying.

The sensor consists of a porcelain line post insulator with an embedded coil that is inductively coupled to the conductor. The voltage induced in the coil is directly proportional to the alternating current in the primary conductor.

The Series 1301 high accuracy sensors may be
used with the Series 4400/4500 AutoCap Capacitor Controllers for Var or Current control applications.
The sensor offers a unique combination of safety, installation without service interruption, space saving, and low installed cost.


	No Service Interruption/Revenue Loss
	Line cutting or dead ending is not necessary for installation because any nonferrous conductor-tie material can be used to fasten the conductor to either sensor.
	No Maintenance
	Rugged, porcelain housing with no moving parts allow sensors to withstand continuous high current, transients, and switching surges.
	Large Operating Range
	The sensor never needs to be changed as loads increase.
	Safety
	Low output voltage (only 1 volt for each 60 amperes of line current) eliminates dangerous shock hazard.
	Easy Installation
	Low cost, space saving installation without service interruption.

Specifications

Ordering Information
Voltage Class (L-L)	Standard Accuracy (For Replacement Only)	High Accuracy
15 kV	1301-11A	1301-17A
25 kV	1301-41A	1301-47A
35 kV	1301-21A	1301-27A

Joslyn Hi-Voltage Royce Thompson Fisher Pierce