What are the regulations for the normal operating conditions of transformer products?

The normal operating conditions for transformer products are crucial for their long-term stable performance and reliability. The following are detailed specifications for these operating conditions:

●Altitude:

Transformers are typically designed and manufactured under the assumption that their operating environment will not exceed an altitude of1,000 meters. Altitude directly impacts the insulation performance and cooling effectiveness of transformers. At higher altitudes, the air density decreases, potentially reducing insulation strength and cooling efficiency, which can affect the operational safety and reliability of the transformer. In high-altitude areas, appropriate compensatory measures, such as enhancing insulation levels or improving the cooling system, are usually required.

●Ambient Air Temperature:

●Maximum Air Temperature: The maximum ambient air temperature during transformer operation shouldnot exceed +40°C. High temperatures can accelerate the aging of insulation materials, thereby affecting the transformer's performance and lifespan.

●Monthly Average Temperature:The monthly average temperature of the operating environment shouldnot exceed +30°C. This condition helps ensure that the transformer operates within a more stable temperature range, avoiding failures caused by temperature fluctuations.

●Annual Average Temperature:The annual average temperature shouldnot exceed +20°C. This regulation ensures that the transformer operates within an appropriate temperature range throughout the year, maintaining long-term performance stability.

●Minimum Air Temperature:Foroutdoortransformers, the minimum ambient air temperature shouldnot be lower than -25°C, while for indoortransformers, it shouldnot be lower than -5°C. Extreme low temperatures can cause insulation materials to become brittle, increasing the risk of electrical faults and affecting the transformer's startup and operation.

●Cooling Water Temperature at the Inlet:

For transformers that use water cooling, the water temperature at the cooling unit's inlet shouldnot exceed +25°C. Excessively high water temperatures can reduce cooling efficiency, leading to transformer overheating and potentially affecting its normal operation.

●Power Supply Voltage Waveform:

The power supply voltage waveform should approximate a sine wave. A sine wave voltage helps ensure the normal operation of the transformer and avoids additional losses or equipment failures caused by waveform distortion. Distorted voltage waveforms may lead to core saturation, increased losses, and adverse effects on the transformer's insulation system.

●Symmetry of Power Supply Voltage:

The power supply voltage should remain approximately symmetrical across three phases. Symmetrical three-phase voltage ensures load balance on the transformer, helping to prevent mechanical vibration and temperature rise caused by voltage imbalance, thereby extending the equipment's lifespan.

●Cleanliness of the Installation Environment:

The installation environment of the transformer should be kept free from significant contamination. Dust, oil, and other pollutants can affect the transformer's cooling efficiency and insulation performance, increasing maintenance and cleaning difficulties, and potentially leading to equipment failure. Maintaining a clean installation environment can significantly enhance the transformer's operational reliability and longevity.

In summary

In summary, the normal operating conditions for transformers include altitude, ambient air temperature, cooling water temperature, voltage waveform, power supply voltage symmetry, and cleanliness of the installation environment. These specifications are designed to ensure that transformers operate efficiently and reliably within their design parameters, avoiding performance degradation or equipment failure due to environmental factors.

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LuShan, est.1975, is a Chinese professional manufacturer specializing in power transformers and reactors for 49 years. Leading products are single phase and three phase isolation transformers, electrical transformer, distribution transformer, step down and step up transformer, low voltage transformer, high voltage transformer, control transformer, toroidal transformer, R-core transformer; DC inductors, AC reactors, line and load reactor, chokes, filtering reactor, and intermediate, high-frequency products. Our power transformers and reactors are widely used in 10 application areas: rapid transit, construction machinery, renewable energy, intelligent manufacturing, medical equipment, coal mine explosion prevention , excitation system, vacuum sintering(furnace), central air conditioning.

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