General description:

LSY three-phase-integrated current transformer is fit for be installed at the three-phase bushings of the ring switchgears and the switches on the wire poles. It is used to the measurement and protection of the three-phase current and the zero-sequence current for the three-phase bushings and the zero sequence current for then loops of the several cables.

The core and secondary windings are vacuum poured by high quality epoxies resin in the fire retardant plastic casing, which has the characteristic of moisture proof, stable performance and dispensing with maintenance.

Type designation:

Type code:

Product code:

Technical data:

Rated frequency：                  50Hz or 60Hz

Rated secondary current：           5A or 1A

Rated short-time thermal current：    40kA，1s

Rated continuous thermal current：   120%In

Power-frequency withstand voltage:   3KV , 1min

Instrument security factors：         FS≤10

Application conditions:

Ambient temperature：              -25 ℃-+40℃

Average day temperature：          ≤40℃

Altitude：                          ≤3000m

Pollution level：                    III

Product overview:

All kinds of current transformers of different specifications and parameters can be made according to the client’s demands.

Wiring diagrams:

Download the specifications of LSY three-phase-integrated series current transformer Transformers

3 Phase CT Download.pdf