Temel bilgiler.
Hayır. Modeli.
Wholesale Price 550kv Self-Automatic Transformer
Application
Power, Electronic, Instrument, Lighting, Rectifier, Audio
Core
Core-type Transformer
Cooling Method
Dry-type Transformer
Winding Type
Multi-winding Transformer
Certification
ISO9001-2000, ISO9001, CCC
Usage
Single-phase Transformer, Rectifier Transformer, Combined Transformer, Power Transformer, Distribution Transformer
Frequency Characteristics
Power Frequency
Ürün Açıklaması
Power transformer is mainly composed of iron core, winding, oil tank, conservator, insulating sleeve, tap changer and gas relay.
1. Iron core
The iron core is the magnetic circuit part of the transformer. During operation, hysteresis loss and eddy current loss should be produced to generate heat. In order to reduce the heat loss and volume and weight, the core is made of cold-rolled grain oriented silicon steel sheet with magnetic conductivity less than 0.35mm. According to the arrangement of winding in the iron core, there are two types: iron core type and iron shell type.
In the large capacity transformer, in order to make the heat generated by the core loss be fully taken away by the insulating oil during circulation, so as to achieve good cooling effect, cooling oil channel is often set in the iron core.
2. Winding
Winding and iron core are the core components of transformer. Because of the resistance of the winding itself or the contact resistance at the joint, it can be known from Joule's law that heat should be generated. Therefore, the winding cannot pass the current higher than the rated current for a long time. In addition, a large electromagnetic force will be generated on the winding when the short-circuit current passes through, which will damage the transformer. There are two kinds of basic windings: concentric winding and overlapping winding.
The main faults of transformer winding are inter turn short circuit and short circuit to shell. Turn to turn short circuit is mainly caused by insulation aging, or due to overload of transformer and mechanical damage of insulation during through short circuit. When the oil level in the transformer drops, the turn to turn short circuit can also occur when the winding is exposed to the oil surface; in addition, when there is a through short circuit, the winding will be deformed due to the action of over-current, which will cause mechanical damage to the insulation and cause turn to turn short circuit. In case of inter turn short circuit, the current in the short circuit winding may exceed the rated value, but the current in the whole winding may not exceed the rated value. In this case, the gas protection acts, and when the situation is serious, the differential protection device will also act. The short circuit to the enclosure is also caused by insulation aging, oil moisture, oil level drop, or lightning and switching overvoltage. In addition, in the case of through short circuit, the winding deformation caused by over-current will also produce the phenomenon of short circuit to the shell. When the shell is short circuited, the gas protection device and the grounding protection device usually act.
3. Fuel tank
The body (winding and iron core) of oil immersed transformer is installed in the oil tank filled with transformer oil, and the oil tank is welded with steel plate. The oil tank of medium and small-sized transformers is composed of a tank shell and a cover. The transformer body is placed in the tank shell, and the tank body can be lifted out for maintenance by opening the tank cover.
Insulation cooling classification
It can be divided into oil immersed transformer and dry-type transformer. In order to strengthen the insulation and cooling conditions, the core and winding of the transformer are immersed together in the oil tank filled with transformer oil. In special cases, such as street lamps and mine lighting, dry-type transformers are also used.
Oil immersed type
1. Non enclosed oil immersed transformer: mainly S8, S9, S10 series products, widely used in industrial and mining enterprises, agriculture and civil buildings.
2. Enclosed oil immersed transformer: mainly S9, S9-M, s10-m and other series of products, mostly used in the oil and chemical industry, where there are more oil and chemical substances.
3. Sealed oil immersed transformer: bs9, S9 -, S10 -, s11-mr, SH, sh12-m and other series products can be used for power distribution in industrial and mining enterprises, agriculture, civil buildings and other places.
Performance characteristics
a. The low-voltage winding of oil immersed transformer generally adopts the cylinder structure of copper foil winding shaft, except for small capacity copper wire; the high-voltage winding adopts multi-layer cylindrical structure, which makes the distribution of ampere turns of winding balance, small magnetic leakage, high mechanical strength and strong short-circuit resistance.
b. The iron core and winding adopt fastening measures respectively. The fastening parts such as the height of the device and the low-voltage lead are equipped with self-locking lock nuts. The structure of no hanging core is adopted, which can withstand the bumping of transportation.
c. The coil and core are dried in vacuum, and the transformer oil is filtered and injected with vacuum to minimize the moisture inside the transformer.
d. The oil tank adopts corrugated sheet, which has breathing function to compensate for the volume change of oil caused by temperature change. Therefore, the product has no oil conservator and obviously reduces the height of transformer.
e. Because the corrugated sheet replaces the oil conservator, the transformer oil is isolated from the outside, which effectively prevents the oxygen and moisture from entering into the oil conservator, which leads to the decline of insulation performance.
f. According to the above five performances, the oil immersed transformer does not need to be changed in normal operation, which greatly reduces the maintenance cost of the transformer and prolongs the service life of the transformer.
Adres:
Hangzhou City, 311121, Zhejiang Province, Hangzhou, Zhejiang, China
İşletme Türü:
Üretici/Fabrika, Ticari Şirket
İşletme Aralığı:
Araçlar ve Sayaçlar, Elektrik ve Elektronik, Endüstriyel Ekipmanlar ve Bileşenleri, Hafif Sanayi ve Günlük Kullanım, Hizmet, Metalurji, Maden ve Enerji, Otomobil, Motosiklet Parçaları ve Aksesuarları, Üretim ve İşleme Makineleri
Yönetim Sistemi Sertifikasyonu:
ISO 9000, ISO 14001, OHSAS/ OHSMS 18001
Şirket Tanıtımı:
Hangzhou Jingcheng Elektrikli Ekipman Co., Ltd. (Kısa ad: Jingcheng Electric). 1998 yılında kurulmuş, 60 milyon yuan’dır. Genellikle 110 kV ve daha düşük seri reaktör, şönt reaktörü, manyetik kontrol reaktörü, akım sınırlama reaktörü vb. üretiyoruz. Yıllar süren geliştirme sonrasında, kademeli olarak diğer reaktif güç kompanzasyonu ile ilgili ürünlerle birlikte çalıştık: Reaktörde ve reaktif güç telafisi sektöründe, yurtiçinde lider bir seviye oluşturmak ve giderek ülkeden dünyaya adım atmak için kapasitör, reaktif güç telafi denetleyicisi, deşarj bobini, SVG, vakum kontaktörleri ve diğer ilgili reaktif güç telafi ekipmanları. Şirketimiz, reaktif güç telafi cihazı araştırmasında 20 yıldan uzun süredir uzmanlaşmış ve sektörde değerli bir deneyim kazanmıştır. Manyetik kontrol reaktörü geliştiren ve üreten ilk yerli üreticilerden biriyiz ve Çin′deki yüksek kapasiteli manyetik kontrol şönt reaktörü üreticilerinden biriyiz.
Jingcheng Electric′in Hangzhou′daki Kanka Bilim ve Teknoloji Parkı, Hangzhou′daki Sandun Sanayi Bölgesi ve Huzhou′daki Deqing yüksek teknolojili Sanayi Bölgesi′nde bulunan üç üretim merkezi bulunmaktadır. Jingcheng elektrik, 120 mu′dan fazla bir alanı kaplamaktadır ve 400000 m 2 inşaat alanına sahiptir ve yaklaşık 240 çalışana sahiptir;
şirketimizin avantajları güvenilir ürün kalitesi, ayrıcalıklı fiyat ve mükemmel hizmet kalitesidir. Güç aktarımı ve dağıtım sistemi için daha güvenilir, yüksek kaliteli ve temiz elektrik enerjisi sağlamak üzere birlikte çalışacağınızı umuyoruz. Dünya için kurtardığınız her kW elektrik, çevre koruması için büyük bir pay haline gelecek. Umarım siz ve ben birlikte daha iyi bir gelecek oluşturabilirim!