High quality 15 mva power transformer stepdown

FOB Reference Price:Get Latest Price
US $130,000-155,000 / Set | 1 Set/Sets 15 mva power transformer stepdown (Min. Order)
Supply Ability:
300 Set/Sets per Month 15 mva power transformer stepdown
Port:
Tianjin,Shanghai, Guangzhou,etc.CHINA
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Overview
Quick Details
Place of Origin:
Beijing, China (Mainland)
Brand Name:
Daelim
Model Number:
S9/S10/S11
Usage:
Power
Phase:
Three
Coil Structure:
Toroidal
Coil Number:
TWO WINDING
Product name:
15 mva power transformer stepdown
Rated capacity:
15 mva
Rated voltage:
110kv
Output Voltage:
6.3/6.6 /10.5 11/20/34.5KV
Frequency:
50/60Hz
Material:
Copper
Certification:
ISO9001
Standard:
IEC60076
Cooling type:
ONAN/ONAF
Connection type:
YNd11
Packaging & Delivery
Packaging Details
BY CLIENT REQUEST
15 mva power transformer stepdown
Delivery Time
50 DAYS AFTER THE ADVANCE PAYMENT

High quality 15 mva power transformer stepdown

Product Description

 

110kv SF9 NLTC

General

Amount of local discharge: The apparent discharge amount under 1.5 times of rated voltage is less than 80pC.

Noise: Product of 63MVA and below is lower than 58dB(AN).

Power loss: no-load loss is. 30% lower than that of IEC standard.

Reliablity: All in-service products have no damages or oil leakage occurred.

Short circuit withstanding: Model SFZ11-50000/132 smoothly passed the short-circuit withstanding test of the national transformer quality supervision and inspection center and also passed Holland "KEMA" quality Control syestem

Coil

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 inulation.

In the transformer winding there is a zigzag il 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. The winding adopts radial "0" margin design, between the core and the paper sleeve of LV winding, and between the LV, HV, voltage-regulating windings, as well as before insertion of styas and shroud plate they are fully dried and tightly matched to ensure extremely good compactness and concentricity of the entire winding 

Core

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 burrs controlled within 0.02mm.

The silicon sheet fabrication adopts"no-upeer yoke-lapped" technology and all lapped joints of the silicon sheet are 45 full-miters. The laminated core sheet 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 noise.

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 iron yoke and the lower section of oil tank is tightened with counter-pressure bolts. The upper iron yoke and the upper section of oil tank are fixed at 3 locations. Hence the body inside the oil tank can withstand the vibration during transportation wihtout any shift.

Oil tank and accessories

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 troughts and control cabinets of the secondary circuit are all made of stainless steel, so the entire transformer has a simple and good looking.

All sealing surfaces use quality sealing material and are precision-machined.

On the edge of the tank there are double sealing grooves, and teh 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 reliablity of the sea.

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Main Technical Parameters for 110KV level S(F)9,S(F)10,S(F)11 Series 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
Impendence
(%)
No-load loss(KW) On-load loss(KW)
S9S10S11S9S10S11
6300110
121
(132)
±2x2.5%6.3
6.6
10.5
11
(20)(34.5)
YNd1110.59.58.57.536.934.934.9
800011.410.294542.542.5
1000013.311.910.553.150.250.2
1250015.714.112.46359.559.5
1600019171577.473.173.1
2000022.620.217.893.688.488.4
2500026.623.821110.7105105
3150031.728.425133.2126126
4000037.833.929.9156.6148148
5000044.74035.3189178.5178.5
6300053.147.541.9234221221
7500012~145953.147.2278264.1264.1
900006861.254.4320304304
12000084.876.467.9397377.2377.2
150000100.290.280.2472448.5448.5
180000112.5101.390532505.4505.4

 

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