NTC temperature sensor suitable for dry-type transformers
Release Date:
2023-02-14
Author:
The temperature control device for dry-type transformers comprises a microcontroller, an AD conversion circuit unit connected to the microcontroller, an RS‑485 communication unit, a GPRS wireless communication unit, a display unit, relays, and a voltage regulation circuit unit. Specifically, the AD conversion circuit unit is connected to a signal conditioning circuit unit, which in turn is connected to thermistors mounted on each winding of the transformer; the voltage regulation circuit unit is connected to a rectifier circuit unit, which is linked to the power supply unit; and the relays are connected to the cooling fans. This utility model enables real-time monitoring of the winding temperatures of dry-type transformers, features a simple and reliable structure, and incorporates both serial and wireless communication capabilities. It not only offers high measurement accuracy but also exhibits robust reliability, making it widely applicable to various types of dry-type transformers.
In dry-type transformers, an NTC temperature sensor is used for temperature control. Its primary function is to monitor and detect the temperature, ensuring it does not exceed a set threshold. Maintaining the temperature within this range enhances circuit safety, allowing for reliable operation while significantly improving the product’s practicality.
Today, we’d like to introduce an NTC temperature sensor designed for dry-type transformers.
The NTC temperature sensor features Teflon‑insulated high‑temperature wiring, making it suitable for high‑temperature applications such as dry‑type transformers. It incorporates an MF58 NTC thermistor chip, providing robust temperature monitoring and control. This product is widely adopted across numerous applications.
Product Features:
Quick and responsive
Stable under prolonged use
Commonly used for high-temperature, high-pressure products.
High stability and accuracy (±1%)
It operates over a wide range of working temperatures.
PSB-N is simply connected to high-temperature PTFE wire and features a fiberglass protective sleeve.
Product Specifications (for reference):
Operating temperature range: -30 to 200°C
Thermal time constant: less than 60 seconds (in air)
R(100°C)=6.282kΩ±2% R(25°C)=98.64kΩ
Dielectric strength: 1800 V AC for 3 seconds, with no breakdown or arcing (at a cutoff current of 1 mA).
Insulation resistance: 100 MΩ or higher, measured with a 500 V DC megger (between the glass and the leads)
Huizhou Jin Yuan Xiang Electronic Co., Ltd. It is a high-tech enterprise that manufactures NTC thermistor NTC temperature sensor Temperature probe. Feel free to request a quote with product images. Free sample production available. For more information on NTC thermistors, please visit our website at www.jyx-sensor.cn. If you have any questions, please contact our team for assistance.
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