CT Energy Harvesting Device
CT Energy Harvesting Device CT Energy Harvesting Device CT Energy Harvesting Device CT Energy Harvesting Device CT Energy Harvesting Device

CT Energy Harvesting Device

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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.

Product Features

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.

Scope of Application
Power equipment installed on the high-voltage side of high-voltage transmission lines: wire temperature, breeze vibration, galloping, sub-range oscillation, tension, icing monitoring devices, etc. on high-voltage overhead transmission lines.

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 Input(AC) 500A
Measurement Range(AC) 0-720A
Rated Output Current(AC) 1A
Rated Load 2.5VA 5VA 7.5VA
Accuracy ± 0.5% ± 1% ±3%
Power Frequency Withstand Voltage Between primary and secondary: AC2.5kV 1min
Frequency Range 50HZ-400HZ
Operating Temperature -40℃~+70℃
Storage Temperature -20℃~+50℃
Weight About 1.6Kg

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
Precision ±2% ±2% ±2% ±2% ±2% ±2%
Linear Adjustment Rate -- -- -- -- -- --
Load Regulation ±0.5% ±0.5% ±0.5% ±0.5% ±0.5% ±0.5%
Input Input Current Range 0~1.8A
Frequency Range 40~60Hz
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
Environment Operating Temperature -20~+50℃
Operating Humidity 10~95%RH
Storage temperature and humidity -40~+70℃
Temperature drift ±0.03%/℃
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
Others Dimensions 155*76*49.5
Weight 380g
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%
2. Load regulation rate: the measured output is measured from 0% load to 100% load condition;
3. Linear adjustment rate: under rated load conditions, the input current changes from low to high and is measured;

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
Power(W) Voltage(V)DC Starting Current(A)
0 16 ≤10
1 16 ≤18
2 16 ≤24
3 16 ≤30
4 16 ≤38
5 16 ≤40
6 16 ≤47

Socket Definition

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
6 GND Ground Terminal
7 +16V Output Positive Terminal
8 GND Ground Terminal

Working Principle Diagram

Shape and Installation Dimensions
Installation Precautions

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.

We are a manufacturer has export qualification and experience.

instrument type at least 100pcs ;others by 1 -5 pcs;


Instrument transformer 20 thousand pcs ;current transformer 12 thousand pcs ;voltage transformer 11 thousand pcs.

We have a R&D team for new product design. Successful cases and in continued cooperation. Discussion among both sides ➡general specification ensure➡structure drawing ➡original sample ➡electrical

Standard Carton Export fumigatin-free tray Tray Film Edge fixing strip Vacuum packaging acceptable Customize size acceptable
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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)

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