Open type current transformer (also known as combination transformer, open close transformer, open type transformer, open type current transformer, card type current transformer) is suitable for current measurement and microcomputer protection of power supply equipment under 35KV and 10KV in AC power systems. This current transformer has the characteristics of small size, light weight, openable, and easy installation. The indoor ZK series is widely used in compact fully insulated ring network switchgear, During installation, it is easy and fast to directly clamp onto the connected inlet and outlet cables. It has been widely used in compact fully insulated ring network switchgear, as well as in combination substations and cable junction boxes. The outdoor LMWK series is used for various reactive power compensation devices and mobile substations. Advantages: This type of current transformer uses high-quality imported silicon steel sheet with high magnetic permeability as the magnetic material, which has the characteristics of separable iron core and low magnetic circuit loss. Its semi-circular iron core and secondary winding are vacuum cast with high-quality epoxy resin in a flame-retardant plastic shell, which is moisture-proof, stable in performance, and does not require maintenance. Disadvantage: Due to the fact that the iron core is separated, it is not possible to achieve too high accuracy, usually with a maximum accuracy of 0.5. During installation, clamp two semicircle rings onto the split phase cable and use clamps to hold it tightly. Three elastic rubber rings support the cable and the cable together, creating a harmonious and beautiful appearance. Both 35mm-400mm 10KV and 35KV cables can be used. Applicable occasions: For general measurement and protection in power systems with strong mobility, limited space, or uninterrupted power systems. LMZK is a national standard model for indoor open type transformers. Some on the market, such as LDZK, LZK, ldzk, lzkw, etc., are open type transformers without any difference. As long as the corresponding technical requirements are the same, it is the same product
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