D13-333kVA 13.8kv/240-120V Single Phase Oil Type Transformer

• Application: Power
• Phase: Single
• Core: Core-type Transformer
• Model NO.: D13
• Cooling Method: Oil-immersed Type Transformer
• Winding Type: Single Winding
• Certification: ISO9001
• Usage: Single-phase Transformer, Power Transformer, Distribution Transformer
• Frequency Characteristics: Power Frequency
• Shape of Core: U
• Brand: Changji
• Voltage: 13.8kv
• Frequency: 50/60Hz
• Capacity: 333kVA
• Connection Group: II0
• Inuslation Level: a
• Applied Standard: ANSI
• Transport Package: Wooden Box
• Specification: 333KVA
• Trademark: CHANGJI
• Origin: Shanghai, China
• HS Code: 8504349000
• Production Capacity: 200/Month

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!

Distribution Transformer Product Description
1. General Introduction
The distribution transformer is an essential device in the power distribution system. It plays a crucial role in stepping down the high - voltage electricity from the transmission network to a suitable voltage level for end - users, ensuring the safe and efficient supply of electrical energy. With advanced technology and strict manufacturing processes, our distribution transformers are designed to meet a wide range of application needs.
2. Technical Features

• High Efficiency: Our distribution transformers are engineered to achieve high efficiency, minimizing energy losses during the transformation process. This not only helps in reducing operational costs but also contributes to environmental protection by conserving energy.
• Reliability: Built with high - quality materials and state - of - the - art manufacturing techniques, the distribution transformers are highly reliable. They can withstand various environmental conditions and electrical stresses, ensuring continuous and stable power supply.
• Low Noise: Through optimized design and advanced noise - reduction technology, the distribution transformers operate with low noise levels, which is particularly important in residential and commercial areas.

3. Technical Parameters (Based on IEC Standards)

Parameter	Specification
Rated Power	[List different rated power options, e.g., 100 kVA, 200 kVA, 500 kVA]
Primary Voltage	[Specify primary voltage levels, e.g., 10 kV, 20 kV]
Secondary Voltage	[Indicate secondary voltage levels, e.g., 400 V, 230 V]
Frequency	50 Hz / 60 Hz
Insulation Class	[State the insulation class, e.g., Class A, Class F]
Cooling Method	[Describe cooling methods such as ONAN (Oil Natural Air Natural), ONAF (Oil Natural Air Forced)]
Impedance Voltage	[Provide impedance voltage values, e.g., 4%, 6%]

4. Applications
The distribution transformer is widely used in various fields, including:

• Residential Areas: To supply electricity to households, ensuring a stable power supply for daily life appliances.
• Commercial Buildings: Such as shopping malls, offices, and hotels, meeting the high - power demand of commercial operations.
• Industrial Plants: Providing the necessary power for industrial production equipment, ensuring the normal operation of the production line.

5. Maintenance and Service
Our company provides comprehensive maintenance and service for the distribution transformers. Regular inspections, oil testing, and component replacements are carried out to ensure the long - term and stable operation of the transformers. Our professional technical team is always ready to provide timely support and solutions to any problems that may arise.

In conclusion, our distribution transformers are reliable, efficient, and high - quality products that can meet the diverse needs of different users. Whether in terms of technical performance or after - sales service, we are committed to providing the best experience for our customers
13.8KV 333KVA Single phase Oil type transfomrer technical data 

No.	Description	Unit	Guarantee
A	GENERAL
1	Manufacturing standards		IEC-60076
2	Type		D13-MR-333KVA singe phase Oil type
3	Rated Capacity	kVA	333
4	a) On HV side
	Rated voltage:	V	13200(Tape14400V,2 : 13800V,3 : 13200V,4 : 12870V,5 : 12540V)
	Rated current:	A	25.2
	b)  On LV side
	Rated voltage:	kV	0.24/0.48
	Rated current:	A	1387.5
5	Rated frequency	Hz	60
6	Connection symbol		LI0
7	Short circuit impedance	%	3.5
8	Tapping method		OFF-circuit-tap-changing(NLTC)
9	Tapping range		5%,2.5%,0,-2.5%,-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	70
11	No load loss	kW	0.65
12	Load losses at 75 °C	kW	2.60
13	Total losses at 75°C	kW	3.25
14	Insulation level
	a) HV side	KV	40/125
	b) LV side	KV	5/0
15	Maximum flux density in Core	Tesla	1.45
16	Sound level (sound pressure level)	dB	59
17	Cooling		AN/ON
18	Permissible duration of occasional Overload	hrs.	60Min
	d) Level of Insulating material	Class	A
19	HV/LV winding matrials		copper
20	Iron core materials		High Permeability Grain Oriented silicon
21	color		Dirty white

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