Medium voltage gas insulated switchgear
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Wound core transformer
The wound core transformer is an energy-saving transformer using wound core technology. The transformer has low no-load loss, low no-load current, low noise, strong short-circuit resistance, and strong overload capacity. It is a new generation of energy-saving and environmentally-friendly transformers.
1. Small no-load current, low no-load loss and low noise
The iron core is made of continuous winding of silicon steel strip material, which is tightly wound and has no joints, with low magnetic resistance and low noise; after high temperature annealing, the stress is eliminated, and the no-load loss is greatly reduced.
2. Strong overload capability
Using oil flow oriented control technology, optimizing the oil circuit structure, reducing the hot spot coefficient, and using overload calculation software analysis to ensure that the coil hot spot temperature does not exceed 140°C under the most stringent heavy load and overload situation.
3. Strong short circuit resistance
Use software to calculate and analyze the short-circuit situation at the transformer outlet, adopt high-strength wires and effective support and reinforcement structure, adjust the coil ampere-turn distribution, and reasonably select wire specifications to ensure sufficient margin for stress everywhere. Using self-developed integrated winding technology, the coils are tightly wound with high strength. Our company's products have passed the full set of type tests (including short-circuit withstand capacity test) of the National Transformer Quality Supervision and Inspection Center.
4. Reliable insulation
With the electric field strength as the core of the traction transformer insulation structure design, the field strength suffered by the transformer is analyzed through the wave process calculation program, and the field strength under the conditions of induction and power frequency test is considered at the same time, and reasonable strengthening measures are taken to ensure the main and longitudinal insulation There is sufficient security strength.
5. Low partial discharge volume
Strictly control the electric field intensity of each part, design according to the requirement of no partial discharge, round the structural parts, shape and shield the electrode shape difference area, the whole process of coil winding and internal assembly is carried out in the Class A dust-proof workshop to ensure The body is clean, and the high vacuum oil injection process is adopted to effectively control the partial discharge of the product.
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