Current Transformer JKS-S / JKS
Split core cable current transformers of type JKS-S / JKS are used in indoor switchgears. They transform high currents up to 3000 A into standardized values for meters, measuring and protection devices.
![JKS-S Cable current transformer](/fileadmin/_processed_/3/8/csm_JKS-S_fc7e1d72dd.jpg)
The split core cable current transformer is designed for subsequent installation on fully insulated medium and high voltage cables. This enables retrofitting of existing systems in a simple manner. Primary currents of up to 3000 A can be measured. A specific core padding ensures that the magnetic properties, and therefore the class accuracy, remain constant for decades. The active part is cast in polyurethane (PUR). Type JKS transformers come with a housing degree of protection up to IP 20; type JKS-S transformers up to IP 40. Thanks to a wide range of geometric dimensions the cable current transformer can be adapted to customer requirements. Any installation position is normally possible.
Specifications and Downloads
Technical Specifications
Dimensions
![Drawing of the Split Core Cable Current Transformer JKS](/fileadmin/_processed_/d/2/csm_JKS-S_drawing_afd55d036c.gif)
Technical data
Type JKS / JKS-S | ||
Standard | DIN / IEC / IEEE | |
Highest voltage for equipment | kV | 0.72 |
Rated power-frequency withstand voltage | kV | 3 |
Frequency | Hz | 16.7 / 50 / 60 |
Primary rated current | A | 1 - 3000 |
Secondary rated current | A | 1 / 5 |
Rated short-time thermal current [lth] | kA / 1s | 100 x In |
Accuracy class | 0.1 – 3; 0.2S; 0.5S; P; PR; PX; PXR; TPX; TPY | |
Max. number of cores | 1 |
Type JKS-S | |||||
Height of unit | H | mm | 130 | 200 | 270 |
Fastening dimension | B | mm | 80 | 150 | 200 |
Diameter | D | mm | 90 / 120 / 150 | 90 / 120 / 150 | 90 / 120 / 150 |