Basic Info.
Application
Power, Electronic
Cooling Method
Oil-immersed Type Transformer
Certification
ISO9001-2000, ISO9001
Usage
Power Transformer, Distribution Transformer, Power
Frequency Characteristics
Coil Structure
Layer Coil
Input Voltage
6kv,11kv,25kv,33kv,220kv 400kv
Rated Capacity
11 kVA-3000 kVA
Product Description
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,
Introduction to the Production Process of Dry-Type Transformers
The manufacturing process of dry-type transformers primarily revolves around "oil-free, insulation, and design," with core steps including:
1. Coil Winding
Low-voltage coils
Typically made of copper foil or layer-wound copper wire to enhance conductivity and mechanical strength.
High-voltage coils
Mostly wound with copper wire, adopting segmented or continuous structures to ensure insulation and heat dissipation performance.
Insulation materials
Polyester films, Nomex paper, or epoxy prepreg materials are used for interlayer insulation.
2. 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).
3. 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.
4. 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.
5. 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.
6. 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
Upto 11 KV /0.433 or 0.415 | Energy Level 1 |
Rating (KVA) | Total Losses @50% Load | Total Losses @ | Z% |
Watts | Watts | Impedance |
250 | 980 | 2930 | 4.50% |
315 | 1025 | 3100 | 4.50% |
400 | 1225 | 3450 | 4.50% |
500 | 1510 | 4300 | 4.50% |
630 | 1860 | 5300 | 4.50% |
800 | 2287 | 6402 | 5.00% |
1000 | 2790 | 7700 | 5.00% |
1250 | 3300 | 9200 | 5.00% |
1600 | 4200 | 11800 | 6.25% |
2000 | 5050 | 15000 | 6.25% |
2500 | 6150 | 18500 | 6.25% |
Main Products
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.
Address:
Xinlilou Village, Dazhanglou Town, Jiaxiang County, Jining, Shandong, China
Business Type:
Manufacturer/Factory
Business Range:
Construction & Decoration, Electrical & Electronics, Industrial Equipment & Components, Instruments & Meters, Lights & Lighting, Manufacturing & Processing Machinery, Metallurgy, Mineral & Energy, Security & Protection, Tools & Hardware
Management System Certification:
ISO 14064
Company Introduction:
Shandong Weichite Power Technology Co., Ltd., located in Jining City, Shandong Province, the hometown of Confucius and Mencius, is a high-tech enterprise focusing on the research and development, manufacturing and sales of power equipment. Since its establishment, the company has always been adhering to the business philosophy of "innovation-driven, quality-oriented and customer-oriented", and is committed to providing safe, reliable and efficient power equipment solutions for the global power industry. The company has an experienced and skilled R & D team, and has established close cooperation with many well-known universities and scientific research institutions in China, constantly introducing and absorbing advanced technology at home and abroad, and has made a number of technological breakthroughs in the field of porcelain insulators, composite insulators, power fixtures, transformers and other power supporting equipment, and product performance has reached the international leading level. The company takes international trade as its main market, and its products are exported to dozens of countries and regions such as Southeast Asia, the Middle East, Africa and South America, and are well received by customers. With many years of industry experience, we have accumulated a large number of examples, and the company has established a perfect sales network and after-sales service system to provide customers with timely and professional technical support and after-sales service.