11kv 1250kVA Dry Type Three Phase Transformer

• Customization: Available
• Application: Power
• Phase: Three
• Model NO.: s11
• Cooling Method: Dry-type Transformer
• Winding Type: Two-winding Transformer
• Certification: ISO9001
• Usage: Power Transformer, Distribution Transformer
• Frequency Characteristics: Power Frequency
• Shape of Core: EI
• Transport Package: Export Wooden Case
• Trademark: DGG
• Origin: China
• HS Code: 8504210000
• Production Capacity: 5000PCS/Year

Product Description

General

This product can be used in a wide range of areas, especially in the place of high fire protection requirements. ie, mine, oilfield, subway station, power plant, school, shopping center, skyscraper, and all indoor configuration systems.
 

STRUCTURE CHARACTERISTICS:

• Iron core: core applies excellent cold rolling oriental silicon sheet and a 45°wholly sloped joint with no punching hole structure; the surface of the core is coated with a special resin to protect against rusting, and elastic materials are cushioned between the clamping parts, and core, between the clamping parts and core, between coils and between the core and the base seat to reduce operation noise.
• Coils: low voltage winding applies double cylinder type or fossil type, high voltage winding applies sectional connection type structure; which is wounded by F class insulated polyester double fiberglass copper conductor and reinforced by fiberglass, epoxy resin proportion is poured and molded under vacuum state. It has good electric performance and mechanical strength.
• Temperature control: apply automatic temperature control protection system; realize temperature display, patrol inspection, start and stop air fan, over temperature alarm, tip, and communication interface of a computer, etc functions on demand of users.

References:

ISO 1461: Hot dip galvanized coatings on fabricated iron and steel articles - Specifications and test methods.
IEC 60076: Power transformers.
IEC 60044: Instrument transformers.
IEC 60296: Specification for unused mineral insulating oil for transformers and switchgear.
IEC 60354: Loading guide for oil-immersed power transformers.
IEC 60214: Tap-changers - Part 1: Performance requirements and test methods, Part 2: Application guide.
IEC 60512: Connectors for electronic equipment.

Technical specification:
 

Rated capacity (kVA)	voltage combination			Vector group	Losses(120°kW)		No-load current(%)
	HV(kV)	tapping range	LV(kV)		On-load loss	No-load loss
30					0.71	0.19	3.2
50					1	0.27	2.8
80					1.38	0.37	2.6
100					1.57	0.4	2.4
125					1.85	0.47	2.2
160					2.13	0.54	2.2
200	6				2.53	0.62	2
250	6.3				2.76	0.72	2.2
315	6.6	±5%		Yyno	3.47	0.88	1.8
400	10		0.4		3.99	0.98	1.8
500	10.5	±2x2.5%		Dyn11	4.88	1.16	1.8
630	11				5.88	1.34	1.6
630					5.96	1.3	1.6
800					6.96	1.52	1.6
1000					8.13	1.77	1.4
1250					9.69	2.09	1.4
1600					11.73	2.45	1.4
2000					14.45	3.05	1.2
2500					17.17	3.6	1.2

 

Rated capacity (kVA)	voltage combination			Vector group	Losses(120°kW)		No-load current(%)
	HV(kV)	tapping range	LV(kV)		On-load loss	No-load loss
50					1.23	0.3	2.3
100					1.98	0.47	1.9
160					2.46	0.58	1.7
200					2.93	0.64	1.6
250					3.4	0.73	1.5
315		±5%		Yyno	4.06	0.84	1.4
400	20,22		0.4		4.82	1	1.3
500	24,10	±2x2.5%		Dyn11	5.76	1.17	1.3
630	11,12				6.8	1.32	1.2
800					8.22	1.52	1.1
1000					9.73	1.79	1
1250					11.48	2.06	1
1600					13.79	2.41	0.9
2000					16.29	2.8	0.9
2500					19.27	3.34	0.8