CTK517 series open type residual current transformer is designed and produced according to the current market, which is increasingly appearing, and the later installed relay protection equipment, electrical fire monitoring system and other methods need to be installed without power outage. Since the existing distribution circuit cannot be changed, only the open type product can achieve the purpose of installation. With the expansion of applications, some construction parties are also using open type installation products to reduce installation costs.Because the closed magnetic circuit is cut into two parts, the balance characteristics of the product deteriorate. In order to change the balance characteristic index, it is necessary to select high magnetic permeability materials, and it is also necessary to perform special treatment on the winding design and add a shielding structure outside the winding, so that the balance characteristics can be guaranteed, which greatly increases the production cost of the open type residual current transformer. Therefore, when selecting, according to the installation requirements, only when the closed loop product cannot be installed, the open type is selected.
It should be noted that when installing the open type residual current transformer product, it is necessary to ensure the cleanliness of the core joint surface and its surroundings so that the core cross section can be well combined. Even a small gap will have a great impact on the balance characteristics and accuracy of the product.
This series of products is designed with 6 specifications and is suitable for continuous residual current monitoring of cable loops. Different balance characteristic indicators and accuracy levels can be specified according to different applications to minimize applicable costs.
The product can be output by terminal or direct wire output, and the wire length is specified as needed.
Naming :
Color code:
0: black; 1 brown 2: red; 6: blue; 9 white;
The shell color specified by the customer is coded and classified according to the main color of the color system;
Normal use and installation conditions :
*Installation location: Indoor/outdoor.
*Ambient temperature -10℃~+40℃.
*Ambient humidity The recommended relative humidity is not more than 80%.
*Altitude Not more than 3000m.
*Atmospheric conditions There is no serious pollution, corrosive and explosive media in the atmosphere.
*No environment with significant frequent vibration and impact.
*Storage temperature -20℃~+75℃.
General technical indicators :
Balance characteristic parameters :
CTK517 series size chart :
