The CT energy extraction device is a new type of inductive electricity extraction device that uses the electromagnetic energy induced around the high-voltage transmission line to obtain electric energy. The device utilizes the principle of electromagnetic induction, uses a current transformer to directly induce AC voltage from the high-voltage bus, and then undergoes rectification, filtering, and voltage stabilization to obtain a stable and reliable DC voltage, which provides a stable power supply for the electrical equipment installed nearby. It can ensure the long-term stable power supply of the load equipment. It is suitable as a power supply device for on-line detection, monitoring, inspection, anti-theft and other electrical equipment on high-voltage transmission wires.
Bnwgk-300 is designed and produced by our company for the power supply of on-line detection, monitoring, inspection, anti-theft, communication and other electrical equipment on high voltage transmission and distribution wires. The device includes open type energy transformer, energy power module and supporting connecting wires.
The open-type energy transformer adopts high-quality silicon steel sheet with high magnetic permeability as the magnetic-conducting material, which has the characteristics of divisible iron core and low magnetic circuit loss. Inside the flame-retardant plastic shell, moisture-proof, stable performance and maintenance-free;
The energy-fetching power module has the advantages of dual input, small size, high conversion efficiency, stable performance, isolation of the primary and secondary sides, and high isolation strength; the product adopts a metal shell modular package, which is dust-proof and moisture-proof, and has strong anti-interference ability; Input and output terminals are in the form of wiring terminals for easy connection; The product grid has strong adaptability and can work in a wide range of input flow; This product has output short circuit, overvoltage and overheating protection functions.
Power equipment that is difficult to obtain power supply near high-voltage transmission lines: various monitoring devices on underground power cable lines, monitoring equipment in ring network cabinets, etc.
Technical parameters of split current transformer
|Model & Specifications||LDZK-2 500A/1A|
|Rated Output Current（AC）||1A|
|Accuracy||± 0.5%||± 1%||±3%|
|Power Frequency Withstand Voltage||Between primary and secondary: AC2.5kV 1min|
Technical Parameters of the Power Supply Module
|Model & Specification||5D05||5D08||5D16||10D12||10D24||20D12|
|Outut||Rated Output Voltage||5V||8V||16V||12V||24V||12V|
|Rated Load Power||5W||10W||20W|
|Linear Adjustment Rate||--||--||--||--||--||--|
|Input||Input Current Range||0~1.8A|
|Protection||Short Circuit Protection||The protection mode turns off the output voltage and automatically recovers after the fault is cleared|
|Over temperature protection||The protection mode turns off the output voltage and automatically recovers after the fault is cleared|
|Storage temperature and humidity||-40~+70℃|
|Safety and impact resistance||Pressure resistance||Input to Shell 1.5KVAC||
Output to Shell 1.5KVAC
Input to Output 1.5KVAC
|Insulation||I/O to the Shell>200MΩ|
|Shock Current Resistance||>20KA/s|
|Packaging||355*355*250 packaging box，30pcs/ctn|
Remarks: 1. All parameters are measured under rated input and load conditions, ambient temperature 25°C, humidity 70%
Note: When the ambient temperature exceeds 55°C, forced cooling methods such as air cooling or heat dissipation should be adopted to ensure that the module case temperature does not exceed 85°C
Overall performance test parameters
|Take energy CT starting current data|
|Socket NO.||Socket Name||Socket Definition|
|1||CT1S1||The first route of taking electricity CT S1 terminal|
|2||CT1S2||The first route of taking electricity CT S2 terminal|
|3||CT2S1||The second route of taking electricity CT S1 terminal|
|4||CT2S1||The second route of taking electricity CT S2 terminal|
|5||C+||Capacitor Positive Terminal|
|7||+16V||Output Positive Terminal|
Working Principle Diagram
When the transformer is installed on the line, the ring hoop should be installed firmly to avoid vibration of the transformer.
Please connect the cable correctly according to the terminal definition. Do not connect the cable incorrectly, otherwise, the power supply will be permanently damaged.
The power module housing should be reliably connected to the ground to increase the anti-interference ability.
Address：Head Office: No.8 Chuangye Avenue, Economic Development Zone, Tianmen City, Hubei Province, China (Zip Code: 431700) Nanjing Office: Building 23, Baijiahu Science and Technology Industrial Park, No.2 Qingshuiting West Road, Jiangning Economic Development Zone, Nanjing City, Jiangsu Province,China (Zip Code:211106)