220kv 31500kVA-360000kVA High Voltage High Quality Power Transformer Connection Symbol: Ynd11

• Customization: Available
• Application: Power, Electronic, Instrument, Lighting, Audio, Ore
• Phase: Three
• Usage: Power Transformer
• Frequency Characteristics: High Frequency
• Shape of Core: Ring
• Application Field: Power Grid
• Capacity: 40mva
• Currency: RMB or USD
• Customization: Acceptable
• Delivery Time: Depend on The Quantity
• Transportation: by Truck or by Sea
• Loading Port: It Depends
• Delivery Term: Fob,CIF,EXW,DAP
• Language: English,Chinese,Russian
• Transport Package: Wooden Case or Others
• Specification: As required
• Trademark: HZEC
• Origin: China
• Production Capacity: 250 Sets/ Quarter

Product Description

Company Profile

Henan Energy Electric Equipment Co., Ltd. was established in 2011 and is an excellent and reliable transformer manufacturer in China. The company mainly develops and produces oil-immersed transformers, dry-type transformers, box-type substations and high and low voltage complete sets of equipment.The equipment put into production and operation of the project advocates energy saving, intelligence, information and mechanization. The company has established the Henan Triangle Energy-saving Transformer Engineering Technology Research Center,with 71 utility model patents and 15 invention patents.With years of accumulation in the transformer industry and strong technological innovation capabilities, HZEC Products are sold to the Middle East, North America, South America, Europe, Southeast Asia, Africa and other regions, covering more than 40 countries.

Product Description

 

The 220kV transformer is a high-voltage oil-immersed transformer with a core-type structure. It can be classified by phase number into single-phase transformers and three-phase transformers; by voltage regulation method into on-load tap-changing transformers and no-load tap-changing transformers; by winding coupling method into power transformers and autotransformers; by the number of windings into double-winding, three-winding, and three-winding plus balance winding transformers. Additionally, it includes special types such as split transformers and combined transformers. The product is designed according to IEC international standards, IEEE standards, and current national standards.

Advanced electrical, magnetic, thermal and mechanical force calculation software is used to calculate the electromagnetic field and magnetic leakage distribution, carry out wave process analysis, and select a reliable insulation margin to ensure reliable product performance.

Product Features

Scientific calculation method: Using advanced electrical, magnetic, thermal and mechanical force calculation software, calculate electromagnetic field and magnetic leakage distribution, carry out wave process analysis, select reliable insulation margin, and ensure reliable product performance.
Reasonable structure arrangement: The core adopts multi-step lap full oblique structure to reduce no-load loss and noise; the core supports the round rod, and the coil is made of cardboard tube to enhance the short-circuit resistance; the coil adopts a baffle to circulate the oil flow and reduce the temperature rise of the coil. The special shape sheet is used to raise the heat dissipation center of the sheet and reduce the temperature rise of the oil surface. All the internal insulation parts and metal structural parts are rounded to reduce the local discharge.
Advanced process measures: Automatic cutting of the core, high precision, small burrs, using no stacking iron reel process, the surface is coated with double H curing glue and binding; coil vertical winding, with CNC tensioning device; the body adopts the phase set technology, and the lead adopts the whole preassembly; the body adopts fully automatic control of coal-oil-gas phase drying process.
Perfect quality assurance system: Strictly control product quality according to ISO19001 quality system.
SSZ11-24000/220 transformer passed the national full set of type tests and burst short circuit test.
According to user requirements, other voltage combinations, loss values, connection groups and capacities listed in the table can be provided.

Product Parameters

220kV off-circuit tap-changing transformer

Rated capacity (kVA)	Voltage ratio and tap range(kV)		Connection Symbol	No-load loss(kW)	Full-load loss(kW)	Impedance(%)	No-load current(%)
	HV	LV
31500	220 242±2x2.5%	6.3 6.6 10.5 11	YNd11	35	135	12-14	0.70
40000				41	157		0.70
50000				49	189		0.65
63000				58	220		0.65
75000		10.5 11 13.8		67	250		0.60
90000				77	288		0.55
120000				94	345		0.55
150000		11;13.8; 15.75;20		112	405		0.50
180000				128	459		0.46
240000				160	567		0.42
300000		15.75; 18;20		189	675		0.38
360000				217	774		0.38

Low voltage 66kV level 220kV double-winding off-circuit tap-changing transformer

Rated capacity (kVA)	Voltage ratio and tap range(kV)		Connection Symbol	No-load loss(kW)	Full-load loss(kW)	Impedance(%)	No-load current(%)
	HV	LV
31500	220±2x2.5%	63 66 69	YNd11	38	151	12-14	0.89
40000				45	176		0.89
50000				53	211		0.82
63000				63	247		0.82
90000				83	323		0.75
120000				102	387		0.75
150000				122	453		0.68
180000				138	513		0.68
240000				171	635		0.61

220kV double-winding on-load tap-changer power transformer

Rated capacity(kVA)	Voltage ratio and tap range(kV)		Connection Symbol	No-load loss(kW)	Full-load loss(kW)	Impedance(%)	No-load current(%)
	HV	LV
31500	220±8x1.25%	66.3;6.6 10.5;11 35;37;38.5	YNd11	38	135	12-14	0.70
40000				45	157		0.63
50000				54	189		0.56
63000				63	220		0.56
90000		10.5;11 35;37;38.5		80	288		0.49
120000				99	346		0.49
150000				116	405		0.42
180000				135	468		0.42
120000		66 69		102	355		0.49
150000				120	415		0.42
180000				140	475		0.42

220kV three-winding off-circuit tap-changing transformer

Rated capacity(kVA)	Voltage ratio and tap range			Connection Symbol	No-load loss(kW)	Full-load loss(kW)	Impedance(%)		No-load current(%)
	HV	MV	LV				step-up	step-down
31500	220 242±2x2.5%	69 115 121	6.3 6.6 10.5 11 35  37 38.5	YNyn0d11	40	162	H-M 22-24 H-L 12-14 M-L 7-9	H-L 22-24 H-M 12-14 M-L 7-9	0.70
40000					48	189			0.63
50000					56	225			0.56
63000					66	261			0.56
90000			10.5   11 13.8  35 37  38.5		86	351			0.49
120000					106	432			0.49
150000			11  13.8 15.75 35  37 38.5		125	513			0.42
180000					142	585			0.42
240000					176	720			0.35
300000					208	750			0.30

220kV three-winding off-circuit tap-changing auto-transformer

Rated capacity(kVA)	Voltage ratio and tap range(kV)			Connection Symbol	No-load loss(kW)		Full-load loss(kW)		Impedance(%)		No-load current (%)
	HV	MV	LA		step-up	step-down	step-up	step-down	step-up	step-down
31500	220 242 ±2x2.5%	115 121	6.6 10.5 11 35 37 38.5	YNyn0d11	25	22	117	99	H-M 12-14 H-L 8-12 M-L 14-18	H-M 8-10 H-L 28-34 M-L 18-24	0.50
40000					29	26	144	121			0.50
50000					34	30	170	144			0.43
63000					40	36	201	171			0.43
90000					50	46	276	234			0.36
120000			10.5 11 13.8 15.75 18 35 37 38.5		62	56	340	288			0.36
150000					70	60	405	342			0.33
180000					80	72	464	387			0.33
240000					95	86	595	504			0.25

220kV three-winding on-load tap-changer power transformer

Rated capacity(kVA)	Voltage ratio and tap range			Connection Symbol	No-load loss(kW)	Full-load loss(kW)	Impedance(%)	No-load current(%)
	HV	MV	LV
31500	220 ±8x1.25%	69 115 121	6.3  6.6 10.5  11 35 37 38.5	YNyn0d11	44	162	H-L 22-24 H-M 12-14 M-L 7-9	0.77
40000					52	189		0.70
50000					60	225		0.63
63000					70	261		0.63
90000			10.5 11 35 37 38.5		92	351		0.56
120000					115	432		0.56
150000					135	513		0.49
180000					159	630		0.49
240000					193	780		0.45

220kV three-winding on-load tap-changer power auto-transformer

Rated capacity(kVA)	Voltage ratio and tap range			Connection Symbol	No-load loss(kW)	Full-load loss(kW)	Impedance(%)	No-load current(%)
	HV	MV	LV
31500	220 ±8x1.25%	115 121	6.3  6.6 10.5  11 35 37 38.5	YNyn0d11	25	108	H-L 28-34 H-M 8-10 M-L 18-24	0.56
40000					30	132		0.56
50000					36	157		0.49
63000					42	189		0.49
90000			10.5 11 35 37 38.5		51	247		0.42
120000					64	308		0.42
150000					76	365		0.35
180000					85	419		0.35
240000					104	540		0.30

 

Service environment

1. Device types: outdoor type
2. Type of Voltage Regulation: Off-circuit or On-load
3. Tapping Range: ±5% ±2x2.5% ±4x2.5%
4. Frequency:50Hz or 60Hz
5.Phases: Three or Single
6. Connection Symbol: Dyn11, Yyn0 (or as requested)
7. Short-circuit Impedance: Standard Impedance
8. Altitude is not exceeding 1000m, ambient temperature is not exceeding 40ºC. If it can't meet such conditions, we will modulate parameters in accordance with standard.
 

Packaging & Shipping

 

Customer Case

Certifications