66kv 110kv 220kv 330kv Oil Immersed Power Transformer, High Voltage 10mva, 25mva 50mva Transformer for Substation

• Application: Power, Electronic, Lighting, Rectifier, Audio
• Phase: Three
• Core: Core-type Transformer
• Shipping Cost: Estimated freight per unit.: about shipping cost and estimated delivery time.
• Currency: US$
• Return&refunds: You can apply for a refund up to 30 days after receipt of the products.
• Model NO.: MK-TM2338
• Cooling Method: Dry-type Transformer
• Winding Type: Multi-winding Transformer
• Certification: ISO9001-2000, ISO9001, CCC
• Usage: Rectifier Transformer, Combined Transformer, Power Transformer, Distribution Transformer
• Frequency Characteristics: High Frequency
• Shape of Core: Ring
• Brand: China
• Transport Package: Wooden Case
• Specification: Customized
• Trademark: Markevina or OEM
• Origin: China
• Production Capacity: 100, 000, 000/Year
• Package Size: 200.00cm * 300.00cm * 200.00cm
• Package Gross Weight: 20000.000kg

Product Description

Transformer Oil immersed, High Voltage ONAF YNd11 On Tap Changer
66KV 110KV 220KV Power Transformer, High Voltage 10MVA, 25MVA 50MVA Transformer for Substation
 

TECHNICAL SPECIFICATION
 

Oil-immersed Type Transformer
No.	Name				Unit	Guaranteed Value
1	Company name					Markevina Technology (Zhongshan) Co., Ltd
2	Country of origin					China
3	Standard					IEC60076
4	Type					Oil-immersed type transformer
5	Installation					Outdoor
6	Altitude				m	≤1500
7	Ambient temperature				ºC	-25~+40
8	Transformer model					SFZ-94500/110
9	Rated	Capacity			kVA	56000/94500
		Primary Voltage			kV	110
		Secondary Voltage			kV	23
		Tertiary Voltage			kV	6.3
		Tapping range(NLTC)				±8x2% @ 110kV side
10	Rated frequency				Hz	50
11	Number of phase					3
12	Number of winding					3
13	Transformer oil model					Mineral oil (Diala DX)
14	Cooling method					ONAN/ONAF
15	Vector group					YNyn0+d
16	Short circuit impedance				%	13.5%(±7.5%)
17	No-load loss				kW	56
	Load loss				kW	360(ONAF)
18	Temperature rise			Top oil	K	50
				Winding	K	55
19	Insulation level			Primary
				Power frequency withstand voltage	kV	230
				Lightning impulse (full wave)	kV	550
				Secondary
				a) Power frequency withstand voltage	kV	50
				b)Lightning impulse (full wave)	kV	150
				Tertiary
				a) Power frequency withstand voltage	kV	28
				b)Lightning impulse (full wave)	kV	75
				Neutral
				a) Power frequency withstand voltage	kV	140
				b)Lightning impulse (full wave)	kV	325
20	Winding Material (HV / LV/TV)					Copper / Copper
21	Core material					Grain oriented silicon steel
22	Location of HV Bushings					Top
23	Location of LV Bushings					Top
24	Location of TV Bushings					Top
25	HV Bushing					126/630
26	LV Bushing					24/3150
27	TV Bushing					12/3150
28	Neutral bushing					72.5/630
29	Tap changer		Specification			CMIII-600Y
			Rated current		A	600
			Country of origin			Huaming /china
Dimensions (For reference)
30	Overall dimensions		Length		mm	7000/6900
			Width		mm	5200/2800
			Height		mm	5800/3800
31	Weight		Active part		kg	About59100
			Oil		kg	About23000
			Total		kg	about 97500
Tests
32	Measurement of Winding Resistance				Yes/No	Yes
33	Measurement of Voltage Ratio and Vector				Yes/No	Yes
34	Measurement of Impedance and Load				Yes/No	Yes
35	Measurement of No-load Losses and				Yes/No	Yes
36	Measurement of d.c. insulation resistance between each winding to earth and between windings.				Yes/No	Yes
37	Insulation routine test				Yes/No	Yes
38	Tests on on-load tap-changers, where appropriate				Yes/No	Yes
39	Leak testing with pressure for liquid-immersed transformers (tightness test)				Yes/No	Yes
40	Check of the ratio and polarity of built-in current transformers.				Yes/No	Yes
41	Check of core and frame insulation for liquid immersed transformers with core or frameinsulation				Yes/No	Yes
42	insulation oil test				Yes/No	Yes
43	Power Frequency Voltage Withstand Test				Yes/No	Yes
44	Induced voltage withstand test with partial discharge measurement				Yes/No	Yes
45	HV line end operation impact test				Yes/No	Yes
46	Ightning impulse test				Yes/No	Yes
	Additional routine tests for transformers with Um > 72,5 kV
47	Determination of capacitances windings-to-earth and between windings				Yes/No	Yes
48	Measurement of dissipation factor (tan ) of the insulation system capacitances				Yes/No	Yes
49	Measurement of dissolved gasses in dielectric liquid from each separate oil compartment except diverter switch compartment.				Yes/No	Yes
50	Measurement of no-load loss and current at 90 % and 110 % of rated voltage				Yes/No	Yes