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220kv Oil Immersed Power Transformer / Electrical Distribution Transformer

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Good quality Mobile Transformer Substation for sales
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220kv Oil Immersed Power Transformer / Electrical Distribution Transformer

China 220kv Oil Immersed Power Transformer /  Electrical Distribution Transformer supplier
220kv Oil Immersed Power Transformer /  Electrical Distribution Transformer supplier 220kv Oil Immersed Power Transformer /  Electrical Distribution Transformer supplier 220kv Oil Immersed Power Transformer /  Electrical Distribution Transformer supplier

Large Image :  220kv Oil Immersed Power Transformer / Electrical Distribution Transformer

Product Details:

Place of Origin: CHINA
Brand Name: Tianan Elecric
Certification: IEC,IEEE,ISO
Model Number: SFZ

Payment & Shipping Terms:

Minimum Order Quantity: 1set
Price: Pending
Packaging Details: Bulk & Wooden cases
Delivery Time: 60 days
Payment Terms: T/T, L/C, D/A, D/P, Western Union
Supply Ability: 2000Sets per year
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Detailed Product Description
Tank: Corrugated Steel Plate Typical Products: Voltage Regulating Power Transformer
Warranty: 2 Years Service Life: 20Years
Rated Voltage: 500KV Capacity: 1500MVA

500KV Power Distribution & Transmission Transformer Oil Type Power Substation

 

Overview:

 

220kv 110kv and 66kv low-loss series transformer is our independently developed new generation of transformers on the basis of absorption of domestic and foreign advanced technology, which feature low local discharge, low loss, low noise, high reliability, strange protection against abrupt short circuit. Its excellent performance has been recognized by wide users and highly appraised by experts.The full-sealed suspending-cover free products sell well nationwide.

 

Manufacture:

Core: effectively upgrade transformer’s no-load performance by below methods:

1) The core is made of high-permeable grain-orientated top quality cold-rolled silicon sheet and the material is cut with advanced Germany Geoge GmbH automatic shear line with the cut burs controlled within 0.02mm.

2) The silicon sheet fabrication adopts “no-upper yoke lapped’ technology and all lapped joints of the silicon sheet are 45 full-miters. The laminated core sheets are integrally pressed and adhered with epoxy resin to make the three –leg two-yoke core a strong and flat integral one with good verticality precision, this effectively improves no-load performance and reduces noises.

3) Bracing plates are used as support between coil leg and inner coil. The iron yoke is tied with epoxy resin-impregnated glass fiber band, and the lower section of oil tank is tightened with counter-pressure bolts. The upper iron and the upper section of oil tank are fixed at three locations. Hence the body inside the oil tank can withstand the vibration during transportation without any shift.

Winding:

1) The high-voltage (HV) coil adopts an interleaved-continuous structure to improve the voltage characteristics under impact voltage and make voltage evenly distributed. All stays and pads are chamfered to keep highly reliable insulation.

2) In the transformer winding there is a zigzag oil guide structure so as to fully cool all areas inside the winding, lower the temperature rise of the winding and the hot points of the winding and prolong the service life of insulation. The HV and MV regulation system are independently provided with voltage-regulating winding to balance the ampere turn of each winding, effectively lower the axial electrodynamic force generated at short-circuit of transformer and improve abrupt short-circuit withstanding capacity.

3) The winding adopts radial “0” margin designed, between the core and the paper sleeve of LV winding, and between the LV, HV, voltage-regulating windings, as well as before insertion of stays and shroud plate they are fully dried and tightly matched to ensure extremely good compactness and concentricity of the entire winding.

Oil tank and accessories

1) The tank wall adopts wide steel sheet, which will be folded into corrugated structure without splicing, in this way welds are decreased and mechanical strength is enhanced, meanwhile, the corrugated wall has diverging effect, and thus plays a role in decrease of noise. The routing troughs and control cabinets of the secondary circuit are all made of stainless steel, so the entire transformer has a simple and good looking.

2) All sealing surface use quality sealing material and are precision-machined.

3) On the edge of the tank there are double sealing grooves, and the outer sealing material is used to shade the atmosphere and ultra-ray to protect the inner sealing being damaged, thus at utmost prolonging service life and enhancing reliability of the seal.

 

Main technical parameters for three-phase two winding on-load-tap-changing power transformer

Rated power
(kVA)

High Voltage
(kV)

H.V Tap range

Low Voltage
(kV)

Connection Symbol

Short-Circuit Impedance
(%)

No-load Loss
(kW)

On-Load Loss
(kW)

No-load Current
(%)
9 Type 10 Type 11 Type 9 Type 10 Type 11 Type
31500 220
242
±8×1.25%
±8×1.5%
6.3,6.6,
10.5,11,
20,34.5,
35,37,
38.5,66,
69
YNd11 12~14 38 34 30 135 128 128 0.7
40000 45 41 36 157 149 149 0.63
50000 54 49 43 189 180 180 0.56
63000 63 57 50 220 209 209 0.56
90000 80 72 64 288 274 274 0.49
120000 99 89 79 346 329 329 0.49
150000 116 104 93 405 385 385 0.42
180000 135 122 108 468 445 445 0.42

Main technical parameters for three-phase two winding non-excitation-tap-changing power transformer

Rated power
(kVA)

High Voltage
(kV)

H.V Tap range

Low Voltage
(kV)

Connection Symbol

Short-Circuit Impedance
(%)

No-load Loss
(kW)

On-Load Loss
(kW)

No-load Current
(%)
9 Type 10 Type 11 Type 9 Type 10 Type 11 Type
31500 220
242
±8×1.25%
±8×1.5%

6.3,6.6,
10.5,11,

13.8,15.75
20,35,
38.5,

YNd11 12~14 35 135 32 128 28 128 0.7
40000 41 157 37 149 33 149 0.7
50000 49 189 44 180 39 180 0.65
63000 58 220 52 209 46 209 0.65
75000 67 250 60 238 54 238 0.6
90000 77 288 69 274 62 274 0.55
120000 94 345 85 328 75 328 0.55
150000 112 405 101 385 90 385 0.5
160000       117 425 105 404 94 404 0.49
180000       128 459 115 436 102 436 0.46
240000       160 567 144 539 128 539

0.42

 

 

220kv Oil Immersed Power Transformer /  Electrical Distribution Transformer

Contact Details
Ningbo Tianan (Group) Co.,Ltd.

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