Advanced Thermostable Oil Immersed Transformer for Reliable Isolation

• Customization: Available
• Application: Power, Electronic
• Phase: Three
• Model NO.: D
• Core: Core-type Transformer
• Cooling Method: Oil-immersed Type Transformer
• Winding Type: Two-winding Transformer
• Certification: ISO9001-2000
• Usage: Single-phase Transformer, Power Transformer
• Frequency Characteristics: High Frequency
• Shape of Core: U
• Brand: Weichite
• Gross Weight: 260kg
• Frequency: 50Hz/60Hz
• No-Load Current: 0.55- 1.3%
• Rated Capacity: 50-300 kVA
• Short-Circuit Impedance: 1.3-0.55 %
• Transport Package: Packed in Wooden Cases
• Specification: 1000*1000*1000
• Trademark: Weichite
• Origin: Shandong. China
• HS Code: 8504210000

Product Description

 

Power Transformer 

The classification of commonly used transformers can be summarized as follows:

1, according to the number of phases:

1) Single-phase transformer: used for single-phase load and three-phase transformer group.

2) Three-phase transformer: used for the rise and fall of three-phase systems.

 

2, according to the cooling method:

1) Dry transformers: rely on air convection for natural cooling or increase fan cooling, mostly used in high-rise buildings, high-speed toll stations and electricity and local lighting, electronic lines and other small capacity transformers.

2) Oil-immersed transformer: relying on oil as the cooling medium, such as oil-immersed self-cooling, oil-immersed air cooling, oil-immersed water cooling, forced oil circulation,
1)Unitary transformer:Natural air cooling,Forced air cooling,Oil-immersed self-cooling,Oil-immersed air cooling,Forced oil circulation air cooling

SINGLEPHASE PAD MOUNTED DISTRIBUTIONTRANSFORMER

Single phase pad mounteddistri bution transformers willfocus on traditional Pad mounted housingdesign, with features of smallsize,  light  weight,low noise level low loss high reliability, hermetically sealed. Fullyinsulated 
compactstructure.beautiful appearance volumeis only 1/3 ofthe box-type substation (European box type transformer).Alldistribution rooms Can be 
directly placed in the indoor or outdoor It can also be placedin the streets and the area belt and reliably ensure personal safety, both power supplyfacilities butalso decorate the environment.Widely used in resident-
ial areas, commercial centers, stations, airports,factories businesses hospitals, schools and other places. 

 

 

 

1. Insulation Treatment

Impregnation process

Coils are impregnated with epoxy or silicone resin to improve moisture resistance and heat resistance (applicable to impregnated dry-type transformers).

Vacuum casting

Coils in molds are vacuumed and filled with epoxy resin, which cures to form an integrated insulation layer (a standard process for cast-resin dry-type transformers).

2. Core Assembly

High-permeability silicon steel sheets are laminated with mitered joints to minimize magnetic reluctance and no-load loss, and the core is insulated with paint to prevent rust and eddy current losses.

3. Curing and Molding

Cast-resin transformers require curing in high-temperature ovens to ensure bubble-free and uniform resin solidification.

Impregnated types undergo multiple impregnation and drying cycles to enhance insulation strength.

4. Testing and Quality Inspection

Routine tests

Include turns ratio testing, DC resistance measurement, and power-frequency withstand voltage tests (e.g., 35kV class must withstand 70kV).

Type tests

Partial discharge testing (typically required ≤10pC), temperature rise tests (coil temperature rise not exceeding 100K), and short-circuit withstand capability tests.

5. Surface Treatment and Protection

Weather-resistant coatings are applied (e.g., IP20 for indoor use, IP23 for drip protection).

Protective enclosures or fans are installed (for forced-air-cooled models).

Product Parameters

TypicalDimensionsandWeightsI(C.R.G.OCore)
Rating (kVA)	HV (kV)	Taps (%)	LV (V)	Loss (W)		Dimension(mm)
				No Load	FullLoad	A	B	C	D
15	7.2	+1/-3*2.5%	120-240	60	180	1040	530	770	410
25				100	300	1040	530	775	410
37.5				113	413	1100	580	830	460
50				150	500	1180	580	830	460
75				225	750	1290	616	880	496
15	19.92	±2*2.5%	120-240	58	185	1180	580	650	460
25				78	325	1155	580	660	460
37.5				100	480	1250	620	691	496
50				125	660	1235	645	725	524
75				165	900	1300	680	780	560

 

Company Profile

Shandong Weichite Electric Power Technology Co., Ltd. is a power equipment manufacturer from Jining, Shandong, the "hometown of Confucius" in China. The company's products cover many fields of power equipment, under the establishment of several branches, the main series of products are, electric pole series, iron tower series, power fittings series, insulation material series, overhead wire and cable series, fastener bolt series, transformer, arrester, and other power equipment, The company has more than 100 kinds of power equipment products, professional technical research and development team and perfect quality management system, and has first-class product supporting experience. With many years of power engineering construction services and equipment supporting supply services in China's National grid system, we have accumulated a large number of real cases, specializing in the production of supporting products for 0.4KV to 500KV overhead lines. We focus on solving all kinds of overhead power line construction technical consulting and complete power equipment supporting. According to customer needs to provide the best design and the best product support. Our corporate mission is to provide the world's power engineering companies with the most complete supply of power equipment materials and provide professional technical advice and guidance, truly centralized procurement. Save you a lot of time and cost. Welcome to your arrival!

Certifications

Exhibition & Our Partners

Packaging & Shipping

FAQ

Q1:What is your Minimum Order Quantity (MOQ)?
A:Our standard MOQ is 100units/sets, and we accept trial orders. Custom MOQ can be negotiated based on product requirements.

Q2:Do you offer customization (e.g., logo, packaging)?  
A:Yes! We provide OEM/ODM services for product specifications, packaging, and logo printing. Please share your design files (e.g., AI/CDR), and we will propose solutions promptly.

Q3:How to order samples? Who pays for shipping?
A:Samples can be ordered online with freight collect (DHL/UPS/FedEx) or prepaid. Sample cost is 50% of bulk order price, refundable upon confirmation.

Q4:What is the lead time?
A:Standard lead time: 15 days (after deposit). Customized products require +10 days for sampling. Early orders recommended during peak seasons.

Q5:What payment methods do you accept?
A:We accept T/T, L/C,  Trade Assurance, etc., ensuring secure transactions.

Q6: How do you ensure product quality
A:100% inspection: All products pass QA checks before shipment (reports available).  
Certified: Compliant with CE/FCC/ROHS standards (certificates shown below).  
Warranty: 24-month warranty with free replacement for defects.  

Q7:Which ports and logistics partners do you use?  
A: Main ports: Shenzhen/Shanghai/Ningbo (other ports available).  
Logistics partners: DHL, sea freight agents (MSC/Maersk), express lines, etc., to balance cost and efficiency.