Products » Instrument transformers » Cable type current transformers
CABLE TYPE CURRENT TRANSFORMERS
Application

KAT and SAA cable type transformers; are used for metering and protection purposes. Max.operating voltage is 0.72 kV. They can be used with fully insulated cables on all voltage level.


Assembly

Cable type current transformers (KAT) and split core type current transformers (SAA) have a base plate that allows mounting in any position. Those are maintenance-free products on the operation.

If cable type current transformers will be assembled on to isolated HV cable, shielded cable should be earthed as seen on figure-4 to be able to prevent effects caused by the possible leakage current flow on measuring systems.




CABLE TYPE CURRENT TRANSFORMERS (KAT)

Technical Data
Rated primary current Ipr(A) 20...8000A
Rated secondary current Is(A) 1A, 5A
Rated frequency fR 50Hz, 60Hz
Class rated burden (VA) Acc. to customer requirement
Accuracy class Acc. to customer requirement
Insulation level 0,72 / 3 / - kV
Rated short time thermal current (Ith) min. 100*Ipr
Insulation class E
Standard IEC 60044-1, IEC 60044-6, ANSI, GOST, CAN, AS, etc.






CABLE TRANSFORMER TYPE KATO-3

For assembly on 3 single or double one-phase cables with core size up to 240 mm2.

Technical Data
Rated primary current Ipr(A) 20 ÷ 100A
Rated secondary current Is(A) 1A, 5A
Rated frequency fR 50Hz, 60Hz
Ambient temperature -5 do 40 °C
Maximum operating voltage 0,72 kV (1,2 kV)
Rated short time thermal current (Ith) 60 xln
Insulation class E
Standard IEC 61869-2

Other requirements on request.






SPLIT CORE CABLE TYPE CURRENT TRANSFORMERS (SAA)

Split Core Current Transformers have a magnetic circuit which is splitted two parts and its max. operating votage is 0.72 kV with non-insulated busbars. However they can be used with fully insulated cables on all voltage level. These transformers can be assembled to the system without any power interruption and without the need of demounting any conductor. These transformers are used for measuring and protection. Moreover; they are used for special applications such as measurement of leakage current with precision cores which have high magnetic perme- ability.

Technical Data
Rated Primary Current Ipr(A) 50...2500A
Rated Secondary Current Is(A) 1A, 5A
Rated Frequency fR 50Hz, 60Hz
Rated Class Burden (VA) Acc. to customer requirement
Accuracy Class Acc. to customer requirement
Insulation Class 0,72 / 3 / - kV
Rated Short Time Current (Ith) min. 100*Ipr
Insulation Class E
Standard IEC 60044-1, IEC 60044-6, ANSI, GOST, CAN, AS, etc.


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