Step Down Transformer 10 Mva-23kv/13, 860V, Ynd11, 50/60Hz 10000kVA Oil Type Transformer

• Phase: Three
• Core: Core-type Transformer
• Cooling Method: Oil-immersed Type Transformer
• Model NO.: S
• Winding Type: Two-winding Transformer
• Certification: ISO9001-2000
• Usage: Power Transformer, Distribution Transformer
• Frequency Characteristics: Power Frequency
• Shape of Core: EE
• Brand: Changji
• Primary Voltage: 23kv
• Secondary Voltage: 13.86kv
• Capacity: 10mva
• Frequency: 60Hz
• Connectin Group: Ynd11
• Transport Package: Naked
• Specification: 10000KVA
• Trademark: CHANGJI
• Origin: Shanghai, China
• HS Code: 8504220000

Product Description

Shanghai Changji Electric Co., Ltd. is a professional enterprise specializing in the production of various reactors, power transformers, dry-type transformers, amorphous alloy transformers, special transformers, and box-type substations.

Equipped with modern production facilities, advanced manufacturing processes, and comprehensive testing equipment, the company ensures the production of high-performance products featuring innovative designs, low losses, low temperature rise, low noise, high impact resistance, and strong short-circuit withstand capability.

Core Products: 10kV, 20kV, and 35kV dry-type and oil-immersed reactors

10kV, 20kV, and 35kV oil-immersed transformers

10kV, 20kV, and 35kV vacuum epoxy-cast dry-type transformers

10kV, 20kV, and 35kV non-encapsulated (SG) vacuum pressure-impregnated dry-type transformers

Box-type substations

Additionally, the company can design and manufacture various special transformers according to customer requirements.

For years, the company has adhered to a customer-first philosophy, earning trust and support through a strong commitment to product quality. By continuously improving quality management and pursuing excellence, Zhejiang Changji Electric Co., Ltd. Strives to secure its market position. With full enthusiasm, sincere cooperation, and a win-win business approach, we warmly welcome domestic and international customers to visit, inquire, and discuss potential collaborations!

Our 10 MVA oil transformer is a state - of - the - art electrical device designed to meet the diverse power distribution needs. With a capacity of 10 MVA (10000kVA), this oil - type transformer is a reliable workhorse in the power grid.

The 10 MVA oil transformer operates at a primary voltage of 23kV and a secondary voltage of 13,860V. Its connection group is Ynd11, which is a well - established and widely used configuration in the power industry. This connection group offers several advantages, such as providing a neutral point on the low - voltage side for single - phase loads and better protection against unbalanced loads.

One of the remarkable features of this 10 MVA oil transformer is its dual - frequency operation capability. It can operate at both 50Hz and 60Hz frequencies, making it highly adaptable to different power systems around the world. Whether you are in a region with a 50Hz power grid or a 60Hz one, this 10 MVA oil transformer will perform efficiently.

The oil - type design of the 10 MVA oil transformer is a key factor in its performance. The insulating oil not only provides excellent electrical insulation but also helps in dissipating heat generated during operation. This ensures that the transformer can run continuously without overheating, thereby extending its service life.
Transformer 10MVA-23KV/13.86KV YnD11,50/60HZ 10000KVA oil type transformer techincal data sheet:

No.	Description	Unit	Guarantee
A	GENERAL
1	Manufacturing standards		IEC-60076
2	Type		S-10000KVA/23±2*2.5%/13.86kV
3	Rated Capacity	kVA	10000
4	a) On HV side
	Rated voltage:	kV	23
	Rated current:	A	434.78
	b)  On LV side
	Rated voltage:	kV	13.86
	Rated current:	A	721.50
5	Rated frequency	Hz	50
6	Connection symbol		YNd11
7	Short circuit impedance	%	8
8	Tapping method		OFF-circuit-tap-changing(NLTC)
9	Tapping range		±2*2.5%
10	Maximum temperature rise at rated power:
	a)Maximum winding temperature rise	K	65
	b)Maximum oil Temperature rise	K	55
	c) Hot spot temperature	ºC	105
	d) Core and contruction rise	K	68
11	No load loss	kW	12.4
12	Load losses at 75 °C	kW	52.4
13	Total losses at 75°C	kW	65.172
14	Insulation level
	a) HV side	KV	150/60
	b) LV side	KV	125/38
15	Maximum flux density in Core	Tesla	1.5
16	Sound level (sound pressure level)	dB	90
17	Cooling		AN/AF
18	Permissible duration of occasional Overload	hrs.	60Min
	d) Level of Insulating material	Class	A
21	Thickness of Transformer Tank:
	a)material		cold-rolled plate
	b)Bottom	mm	20
	c)Sides	mm	12
	d)Corrugated wall or radiator	mm	2
	e)Shot blasting and two finish coats	Yes/No	Yes
22	Weights
	a.Net weight of core	kgs
	b.Net weight of copper
	(i) H.V.	kgs
	(ii) L.V.	kgs
	a. Net weight of insulating oil	liters	3400
	b. Weight of activepart	kgs	12000
	c. Weight of the largest shipping package	kgs	18200
23	Transformer dimensions including all fittings:
	a) Height	mm	3500
	b) Breadth	mm	3100
	c) Length	mm	2900
24	Color of transformer		Green
	Accessories/Fittings supplied
1	Oil temperature indicator with maximum pointer	Yes/no	Y
2	Oil level Indicator	Yes/no	Y
3	Conservator with buchholz relay(Sixin)	Yes/no	Y
4	Pressure relieve device	yes/no	Y
5	Conservator	yes/no	Y
6	Support lugs	Yes/no	Y
7	Lifting lugs	Yes/no	Y
8	Earthing terminals for tanks	Yes/no	Y
10	Rating plates	Yes/no	Y
B	SERVICE CONDITION
1	Altitude	Meters	≤2500
2	Temperatures	Degree	-25~+45 ºC