Three Phase Cast Resin Dry Type Excitation Transformer

• Customization: Available
• Application: Power, Electronic, Rectifier
• Phase: Three
• Model NO.: 50~2500KVA
• Core: Core-type Transformer
• Cooling Method: Dry-type Transformer
• Winding Type: Three-winding Transformer
• Certification: ISO9001, CCC, ISO14001, ISO45001, CE, KEMA
• Usage: Power Transformer, Distribution Transformer
• Frequency Characteristics: Power Frequency
• Shape of Core: Ring
• Brand: PEARL ELECTRIC
• Production Descriptions: excitation transformer
• Reference Standards: IEC60076-11
• Capacity: 50~2500KVA
• Voltage (HV/LV): 6KV, 10KV, 11KV, 13.2KV
• Impedance: 4%
• Connections (Vector Group): Dyn11
• Frequency: 50Hz/60Hz
• Tapping Range: +/-2 x 2.5%
• Core materials: Silicon Steel
• Winding materials: Copper/Aluminum
• Noise Level: As per IEC Specifications
• Insulation Class: H-Class/F-Class(Customized)
• Temperature Rise: 125k
• Cooling Way: AN/AF
• apply to: excitation system
• Transport Package: Wooden Case, Wooden Pallet(Customized)
• Specification: As manufacturer′s design
• Trademark: PEARL ELECTRIC
• Origin: China
• HS Code: 8504349000
• Production Capacity: 15million kVA Per Year
• Package Size: 100.00cm * 100.00cm * 100.00cm
• Package Gross Weight: 500.000kg

Product Description

 Three Phase Cast Resin  Dry Type Excitation Transformer for excitation transformer

Product Description

Transformer Description:
Excitation transformer is a device specifically designed to provide three-phase AC excitation power for the generator excitation system, usually connected to the generator outlet. Due to the high output voltage of the generator and the low rated voltage of the excitation system, a step-down transformer is required.
Excitation transformers are mainly divided into four types according to insulation methods:
(1) Epoxy resin cast dry-type transformer.
(2) Alkali free fiberglass winding immersed dry-type transformer.
(3) MORA type dry-type transformer.
(4) Oil immersed transformer.
Transformer Features:
Pearl Electric designs and produces excitation transformers for epoxy resin cast dry-type transformers, which have the following advantages:
(1) High insulation strength, epoxy resin used for casting has an insulation breakdown field strength of 18-22kV/mm, and oil immersed transformers with the same voltage level have roughly the same lightning impulse strength.
(2) Strong short-circuit resistance.
(3) Outstanding disaster prevention performance, epoxy resin is flame retardant and can self-extinguish, without causing explosions.
(4) Excellent environmental performance, epoxy resin moisture-proof and dustproof, can operate under harsh environmental conditions.
(5) Low maintenance workload.
(6) Low operating loss, high operating efficiency, and low noise.
(7) Small size, light weight, convenient installation and debugging
Transformer Applications:
Excitation transformer is a device specifically designed to provide three-phase AC excitation power for the generator excitation system, mainly used to control and start the electromagnetic field of the generator. The following are the application scenarios of excitation transformers:
In large-scale power generation equipment such as thermal power plants, wind farms, and hydropower stations, excitation transformers are usually required. The excitation transformer

Certifications

 

Company Profile

Pearl Electric Co.,Ltd.(Hereinafter referred to as Pearl Electric) located in Panyu District, Guangzhou City, which is an enterprise mainly engaged in the R&D and manufacture of power transmission and transform.

Pearl Electric, the former state-owned Panyu Electrical Motor Factory established in 1958, To facilitate Company's development, the Company was formally renamed as Pearl Electric Co., Ltd. in January, 2010. Pearl Electric occupies a factory area of 10.5 hectares, with more than 7.2 hectares of modern factory building. Pearl Electric has more than 600 employees and more than 600 sets of specialized manufacturing equipment.


Pearl Electric is engaged in the research and development, production and operation of dry-type transformers of 35kV and below, combined transformers, prefabricated substations, reactors, oil-immersed power transformers of 220kV and below , transmission and distribution and Control equipment, etc. The annual output of transformers exceed 20 million kVA, and the pad-mounted products exceed 4000 sets.

 

Dry-type transformer	15,000MVA
Oil-immersed Distribution Transformer	18,000MVA
110kV &220kV Power Transformer	300 units
Substation Transformer	10,000 units

The company is committed to providing customers with safe, efficient and intelligent power transmission solutions, and has become a leading enterprise in the domestic nuclear power dry-type transformer and new energy box-type substation industry and a leading enterprise in the environmental protection and energy-saving transformer industry.

Product Display

 

Pearl Electric's Technology

Core:

• Our transformer's core is made of high quality cold rolled grain oriented silicon steel sheet with high magnetic permeability. It is using full 45° slope lamination, so that the no-load loss and the no-load current are reduced efficiently.
• We use Simulating Analysis in the core model design, so that we can calculate the frequency and size of the vibration exactly and avoid the core cavity resonance.
• Between core & windings, and core & frame, we use spring connection. Then the noise is lower 10 to 15dB than the standard.

LV Winding:

• LV windings, above 400 kVA capacity, are adopting superior foil conductors, thus to obtain better amper-turn balance and reduce more transverse magnetic flux leakage. Then to greatly improves transformer's anti-short circuit capability.
• The wise design of air passage within the winding, greatly increasing the winding's heat dispersion effect. It helps to decrease temperature rise and improve products' overload capability.

HV Winding:

• HV windings are made of superior copper-conductor wires. Adopting fiberglass to reinforced insulation.
• The HV windings are casting under vacuum and high pressure conditions with Germany HUBERS vacuum Cast Machine. In this way, transformer's resin can get the best penetration. It can also greatly reduce its partial discharge (partial discharge for 11kV product could be lower than 5pC).
• HV windings are adopted optimized structure to improve transformer's distribution of electric field.
• We use our existing technology calculate and analysis Lightning wave process simulation. Then substantially improving product's anti-lighting capability.

 

 

Packaging & Shipping

FAQ

Q: Are you a Manufacturer, factory or Trading company ?   
A: Yes, We are engaging in the research and development, production and operation of transformer for over 60 years.

Q: What's your warranty terms?
A: We offer 12 months warranty time.

Q: Production Time?
A: 30 to 45 days or depending on order requirements.

Q: What's your payment terms?
A: T/T , L/C or negotiation.

Q: How do you conduct quality control in your factory?
A: We implement 100% QC inspection to ensure every product is qualified. We have over 10 times QC inspections during the manufacturing process from raw material to the final products.

Q: Do you have the products in stock?
A: Normally no. All our products produce depending to your order quantity.

Q: How can I trust you ?
A: Pearl Electric is the former state-owned Panyu Electrical Motor Factory established in 1958, Pearl Electric occupies a factory area of 10.5 hectares, with more than 7.2 hectares of modern factory building. Pearl Electric has more than 600 employees and more than 600 sets of specialized manufacturing equipment. We have many patent certificates, CE certificate, KEMA certificate, ISO9001 certificate. Our products are widely used all around the world. We believe that we can provide you products of good quality with competitive price. We are the audited diamond supplier of Made-In-China.

Q: What should provide to make custom transformer ?
A: Technical drawing and technical specification document are  the best, or you can tell us some details technical specification date as below "Quotation and Ordering Required Information".

Q: Could I have your catalog and price list for trial order in MOQ quantity?
A: All of our products are showing on Made-in-China or official website, you are always welcome to ask us to get more information directly.