TR-25 Buchholz Relay
The transformer oil level gauge is a device specifically designed for measuring the oil level in transformers. It typically consists of floating elements, transmission components, indicating elements, alarm components, sensors, etc., and is used for real-time monitoring of the oil level in the oil storage tank. As the oil level rises or falls , the oil level can be displayed on the instrument panel or monitoring system, helping operators monitor the oil level. When the oil level is too high or too low, an alarm signal will be issued, ensuring the normal operation of the transformer. As an important transformer monitoring device, the transformer oil level gauge plays a crucial role in the power system. At the same time, the product has advantages such as high-precision measurement, safety and reliability, easy installation, and maintenance.
Application Range
Main oil tank for oil-immersed transformers
Oil tank for on-load tap changers
Product Features
1. High protection level suitable for different installation needs indoors and outdoors;
2. Both high oil level and low oil level have two pairs of alarm contacts;
3. High precision angular displacement sensor, transmitting digital signals (compatible with 4-20mA analog signals) via RS485 to the background;
4. Equipped with self-diagnostic functions, and indicated through local indicator lights;
5. Self-tilting angle installation for easy observation;
6. Integrated structural design, high strength, high reliability;
Technical Parameters
1．Housing diameter: 250mm
2．Pointer rotation angle: 120°/270°selectable
3．Float rod swing angle: 45°(horizontally upward or downward)
4．Repeatability: ±2.5% FS
5．IP level: IP67
6．Operating temperature: -40℃ ~ +70℃, relative humidity ≤ 95%RH
7．Electrical interface size: M25×1.5 (customizable)
8．Installation method: radial or axial
9．Power supply: 220AC
10．Electrical connection:
M25×1.5 waterproof cable connector
Cable size: recommended 1.5mm2, Upper limit 2.5mm2
11．Contact insulation performance:
insulation resistance: >300 MΩ
Power frequency withstand voltage: 2kV, 50/60 Hz 1min
12．Contact capacity: AC 220V /5A or DC220V 0.3A
13．Shock level: three directions 15g
14．Dial glass: anti-ultraviolet coating polycarbonate
15．Signal acquisition component: linear accuracy 0.1% angle potentiometer
Optional Functions:
24V power supply
Additional rainproof cover shell
C5 or above corrosion resistance grade
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