Application and characteristics of split core current transformer

The split core current transformer is a sensor instrument that can be used for current measurement and microcomputer protection. Because of the characteristics of the split-type core that can be customized, opened and easy to install, it is widely used in the fields of AC motors, lighting equipment, air compressors, and current monitoring of heating, ventilation and air conditioning devices, power management, building self-control systems, and industrial power grid transformation.

The split core transformer core produced by Hemei Electronics can not only be customized according to customer requirements, but also have a measurement accuracy of up to 0.2S level. In terms of materials, the split-type transformer core uses high-magnetic induction high-quality silicon steel sheets with excellent characteristics such as high magnetic flux density, low iron loss and low magnetostriction; in production and processing, a high-precision slitting machine is used to slit the silicon steel sheets, and then after computer-controlled fully automatic winding and winding forming and high vacuum annealing, it is cut into the size and shape required by the customer by a precision cutting machine, which ensures the accuracy and stability of the core and can be better applied to the field of split-type transformers.

Material: silicon steel, Permalloy

Thickness: 0.23mm, 0.27mm, 0.30mm

Annealing: ultra-high vacuum annealing

Specifications: customized according to customer requirements, ring, rectangle, special shape are all available

Price: Depends on the material and shape

II. Comparison of advantages and disadvantages of open-type current transformer

1. Advantages:

This type of current transformer uses high-quality imported silicon steel sheets with high magnetic permeability as magnetic conductive materials. It has the characteristics of divisible iron core and small magnetic circuit loss. Its semi-circular iron core and secondary winding are vacuum cast in a flame-retardant plastic shell with high-quality epoxy resin, which is moisture-proof, stable in performance, and maintenance-free.

2. Disadvantages:

Since the iron core is separated, the accuracy cannot be too high. Generally, the highest accuracy is 0.5.

During installation, clamp the two semicircular rings on the phase-splitting cable and hold it tightly with a clamp. The three elastic rubber rings press against the cable and integrate it with the cable, which is harmonious and beautiful. It is applicable to 10KV and 35KV cables of 35mm-400mm.

III. Applicable occasions

Applicable occasions: general measurement and protection in power systems with strong mobility or narrow space.