Energy is also known as renewable resources or energy. It provides material resources with various abilities and powers for human production and life. It is an important material foundation of the national economy. The future destiny of a country depends on the control of energy. The development and effective utilization of energy and per capita consumption are important indicators of production technology and living standards.

As a clean and renewable energy source, wind energy is receiving increasing attention worldwide. The global wind energy is approximately 2.74 × 109GW, of which 2 × 107GW is available, which is 10 times the total amount of hydro energy that can be developed and utilized on Earth. For a long time, people have been using wind power - mainly through windmills to pump water, polish the ground, etc., but now people are interested in how to use wind energy to generate electricity and how to maximize power generation.

As the main detection component, current sensors play an important role in it.

Principle of open-loop current sensor

Calculation formula: The magnetic flux generated by the primary current IP is concentrated in the magnetic circuit through a high-quality magnetic core, and the Hall element is fixed in a small air gap to linearly detect the magnetic flux. The Hall voltage output by the Hall device is processed by a special circuit, and the secondary side output follows the output voltage that is consistent with the waveform of the primary side. This voltage can accurately reflect the changes in the primary side current.

Technical specifications for open-loop current sensor

Model: jce500

Rated measuring current IPN: 5006008501000150020002500 a

IP measurement range: 1500 1800 2550 3000 4500 5000 5000 a

Rated measurement output VM: 4V

Power supply voltage VCC (≥ 5%): ≥ 15V (± 5%)

Current consumption IC:+20/-15mA

Accuracy X: - Accuracy XG (@ VPN, Ta=+25 ℃):± 1％

-Nonlinear and ε; l（@ VPN，Ta = + 25℃）：＆plusmn; 1％

-Zero offset vo:≤& plusmn; 20mV（@ + 25℃）

-Temperature Drift VOT:≤& Plusmn; 1mV/K

-Response time tr (@ 90% of VP maximum):≤ five point five

-Working frequency f: dc-25kHz

Voltage withstand VD: Voltage withstand between primary and secondary circuits: 5kV/50Hz/1min

Working temperature Ta: -25? C〜+ 85？ C

Storage temperature ts: -25? C〜+ 85？ C

Output impedance rout:<0.05; 100＆Ω;

Weight M: 200 grams x (1 plus 10%)

Standard: en50178

Problems in the use of open-loop current sensors

When selecting sensors, please pay attention to the ambient temperature of the product. Industrial grade sensors cannot meet the basic requirements and must be at -40 ℃; c-125℃;

2. The altitude requirement is over 3500 meters;

When selecting sensors, the range may be slightly larger, leaving some space for product overload.

4. When selecting wiring terminals, railway specific seismic resistant wiring terminals should be used as much as possible to prevent wind power converters from falling off during transportation or use when they cannot withstand strong earthquakes.

Weikewei Technology has been focusing on the localization of imported brands for 12 years. Our professional FAE team can provide you with a series of free alternative upgrade solutions for current sensors. For more details, please contact our technical personnel.

Li Gong: 18576410868