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Home > Electrical & Electronics > Power Transmission & Transformer > Transformer > 220kV Transformer

220kV Transformer

Negotiable MOQ: 1 Piece (Price negotiable depending on order volume and customization)

Key Specifications

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Place of Origin:

Liaoning, China

Brand Name:

GEM

Model Number:

220kV 110kV 66kV

Contact Supplier Request Quote Chat Now

Liaoning Mec Group Co., Ltd.

Payment & Shipping

Payment Methods:

Port of Shipment:

Shanghai Port

Delivery Detail:

Delivery time depends on order quantity.

Product Details
Company Profile
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Place of Origin Liaoning, China

Brand Name GEM

Model Number 220kV 110kV 66kV

Usage Power

Phase Three

Coil Structure Other

Coil Number Autotransformer

Specifications

The high-voltage coil adopts an interleaved-continuous structure to improve the voltage characteristics under impact voltage.

The 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 chamfered to keep highly reliable insulation.

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.

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 stays and shroud plate they are fully dried and tightly matched to ensure extremely good compactness and concentricity of the entire winding.

The 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-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 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 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 without any shirt.

Main technical Parameters for thre-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 (%)
Rated power (kVA)	High voltage (kV)	H.V. tap range	Low voltage (kV)	Connection symbol	Short-circuit impedance(%)	Type 9	Type 10	Type 11	Type 9	Type 10	Type 11	No-load current (%)
31500	220 242	±81.25% ±81.5%	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 thre-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 (%)
Rated power (kVA)	High voltage (kV)	H.V. tap range	Low voltage (kV)	Connection symbol	Short-circuit impedance(%)	Type 9	Type 10	Type 11	Type 9	Type 10	Type 11	No-load current (%)
31500	220 242	±81.25% ±81.5%	6.3,6.6 10.5,11 13.8,15.75 18,20 35,38.5	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
75000						67	250	60	238	54	238	0.6
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
160000						117	425	105	404	94	404	0.49
180000						135	122	108	468	445	445	0.42
240000						160	567	144	539	128	539	0.42