Supporting current instrument transformers CTS are designed for the measurement and protection of the distributingfacilities of high voltage for inner settings.
Current transformers CTS 12 are produced in two arrangements: CTS 12.S and CTS 12.L. The difference of these two arrangements is only the length of the instrument (see the picture). (Dimension in brackets is for CTS 12.L.) The bigger dimensions of CTS 12.L allow to fulfill the more demandingtasks of the customer for the parameters of the instrument (3-cores arrangement, higher performance, higherovercurrent number, etc.).
The value of the secondary current is 5 A or 1 A with the possibility of combination. The classes of accuracy for the circuits of measurement are 0.2, 0.5, 1.3, for the circuit of protection are 5P, 10P. The transformers comply with the required class of accuracy within the values from 25% to 100% of rated load.
The limiting working current is 120% of IN ,according to the agreement of producer and customer it is possible tosupply other values, for example 200% of IN.