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  • 20kv Class Low Noise Oil Immersed Power Transformer Anti Short Circuit - China

    price: check with company for price

    20kV Oil - Immersed Transformer, Three Phases, Two Winding, Power Distribution Introduction Oil-immersed type transformer features low noise, low loss, rational structure, high quality material, scientific design, strict production technology and advanced test method. The product also has the following additional advantages: 1. High mechanic strength, great anti-short circuit capability, excellent anti-lightning impulse capability and high reliability. All these performance indexes rank first in the industry in China. 2. Excellent overload capability, capable of continuously working under 110% rated load. 3. Low loss, energy-saving, economic and maintenance free. 4. Nice appearance, small size, less installation space occupation and low engineering cost. 5. Each performance index and technical specification excels that specified in China GB, international IEC and industrial standards. 6. Hermetically sealed corrugated tank structure is adopted, thus to effectively prevent air corrosion to the oil and prolong service lifetime of the transformer. Core: The core is manufactured with high quality cold rolled grain-oriented silicon steel of high magnetic conductivity, and 45 Mitring and steps overlapping structure is used for core production, thus to effectively reduce no-load loss and no-load current. HV winding: HV winding is manufactured with high quality copper conductor, adopting optimized structure to improve electric distribution. Lightning impulse wave process is carried out for calculation and analysis, thus to improve transformer's anti-lightning impulse capability. LVwinding: LV winding is manufactured with high quality foil conductor, so the ampere-turn balance is excellent and the transverse magnetic flux leakage is low. The anti-short circuit capability is thus greatly improved. Oil conduit is rationally designed in the windings to increase winding's heat dispersion surface, effectively reduce temperature and improve transformer's overload capability. Insulation Structure: The transformer adopts class-A insulation. The HV and LV windings are arranged in concentric way. Between the windings are oil-clapboard insulation structure built with paper cylinder and small oil conduit. Tank: The tank is jointed with high-quality steel. Rust-removing and phosphorization processes are carried out for the tank surface, then the surface is coated with FVC anti- erosion paint, thus to effectively prevent grease pollution and chemical erosion. The appearance is nice and harmonic with the environment. The whole structure is easy for installation and maintenance. It can be widely applied in outdoor environment and under harsh conditions. Accessories: The transformer is equipped with HV & LV bushings, oil drain valve, earthing bolt, lifting board, rating plate, pressure relief valve and other accessories. Transformers of over 800KVA power are equipped with signaling thermometer and gas relay. General With the company's unique calculation program, the iron core, coil, body, leading wire, fuel tank and other components for the 10-35kV class power and distribution transformers are optimized in all directions to ensure product performance, excellent process equipment, careful material optimization, efficient manufacturing, making the transformer with low loss, low partial discharge, low noise etc., the product quality is superior, with energy saving and environmental protection, reliable operation and effectively reduce the operating costs. - - - - Specifications: | Rated H.V.: | 20 (20.5, 22 )kV, 22.5% | Vector Group | Dyn11/Yyn0 | Rated L.V.: | 0.4kV | Capacity: | 30~2500 | No-load Loss: | 0.13~3.20kW | Load Loss | 0.60~21.5kW | No-load Current: | 0.6~2.3% | Impedance Voltage: | 4/4.5/5.5% | Tap-changing | On-load Tap-changing | Cooling Method: | ONAN/ONAF | Reference Standards | IEC60076 | Notes: The above specifications may be customized according to customer's requirement. | Features & Advantages | 1. Low loss, low noise and high reliability. | 2. Excellent dynamic thermal stability and high over-load capacity. | 3. Simulation analysis was carried out for the core mould design, thus to greatly reduce noise level. Simulated lightning impulse wave process was carried out for HV winding mould design, thus to greatly improve product's anti-lightning impulse capability. | | - - - -


    Company Contact:


    • Phone: 86-020-22626605

    • Address: No.118 Donghuan Rd,Donghuan St,Panyu District,Guangzhou,Guangdong Province,511400 China, Guangzhou, Guangdon, China

    • Email: Email


    Published date: March 7, 2018 -

    • Business Description: Provided with the after-sale service team with excellent technique and fast reaction, Pearl Electric will provide top-ranking after-sale service as we always did. We will visit the users regularly for quality researches to improve the products' quality and meet users' needs.

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