Transformer
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What could be the reasons for excessive noise in an oil-immersed transformer during normal operation?
The transformer makes loud noises when overloaded; other core failures are also possible
High voltage can cause the transformer to become over-excited, resulting in an increased and sharper noise level, which significantly affects the transformer’s noise levels. Overload causes the transformer to emit a very loud and deep \"buzzing\" sound.
If it’s not overloaded, then it’s the fixing screws of the inner iron core that are loose.
First, check whether the transformer is overloaded; if not, there may be loose screws or loose clamps inside the transformer. Check whether the transformer current and voltage are within reasonable ranges.
Incorrect voltage, low oil level, poor fasteners. Make timely corrections
1. High grid voltage results in unevenly pitched sharp noises. 2. Overload causes an increase in the electromagnetic humming sound. 3. Loose core fasteners lead to increased vibration of the silicon steel sheets
Which are the main manufacturers (domestic) of oil-immersed transformers?