Question 1

What types of transformers can you produce?

Accepted Answer

Our product portfolio covers the full range of transformer types, including oil-immersed power transformers (compliant with GB/T 6451, capacities from 30kVA to 720MVA), dry-type transformers (epoxy resin cast or non-encapsulated Class H insulation, capacities up to 1600kVA and above, insulation Class F/H, cooling by natural or forced air), compact substations (also known as prefabricated substations, integrating transformers with HV/LV switchgear in an enclosure with IP54 protection and above),

Question 2

What voltage levels and capacity ranges do you cover?

Accepted Answer

Our products cover the full voltage spectrum from 6kV, 10kV, 20kV, 35kV, 66kV, 110kV, 220kV, 330kV to 500kV. Capacity ranges from 30kVA up to 720MVA. Specifically: 6kV/10kV with typical capacity 30 to 2500kVA (for industrial/mining enterprises and urban distribution networks), 20kV/35kV with 50 to 20000kVA (for regional substations and industrial distribution), 66kV/110kV with 6300 to 63000kVA (for HV transmission and power system backbone), 220kV with 31500 360000kVA

Question 3

Can you customize products according to my requirements?

Accepted Answer

Absolutely. We provide full custom development based on customer drawings, technical specifications, or samples. Multi tap winding design is supported (5%/10% adjustment range) to accommodate voltage and frequency standards of different countries. For custom orders, we follow a three-step confirmation process: technical questionnaire sending a detailed parameter checklist before order confirmation; design approval providing drawings for written customer approval before production

Question 4

What is your energy efficiency level?

Accepted Answer

Using amorphous alloy cores or high permeability grain oriented silicon steel, no load losses are reduced by over 75% compared to conventional products. Single phase transformer efficiency reaches 99.5%, with no load losses fully compliant with GB 20052-2024 Level 1 energy efficiency standards, and load losses exceeding Level 1 standards by over 65%.

Question 5

What certifications are required for export?

Accepted Answer

Different target markets have different certification requirements. North America requires UL/cUL certification (UL5085 standard), which must be completed by an NRTL with annual factory audits; the EU requires CE certification (covering both LVD and EMC directives) compliant with EN 61558 series standards

Question 6

Which brands do you partner with?

Accepted Answer

We have established deep agency partnerships with leading domestic and international transformer brands, including TBEA,XD Electric , CHINT Electric and soon on

Question 7

What is your delivery lead time?

Accepted Answer

Leveraging our vertically integrated supply chain and scaled production, standard product delivery lead time is compressed to 6 to 9 months, far superior to the 12 to 18 months typical of international brands. Our annual capacity exceeds 5000 units with sufficient overseas order reserves. Specific delivery time depends on product specifications, degree of customization, and order quantity  we will provide a clear delivery schedule with our quotation.

Question 8

How do you guarantee product quality?

Accepted Answer

We have a comprehensive quality management system. Our products adopt a three dimensional wound core structure with circular coils forming a triangular prism shape for uniform stress distribution short-circuit strength exceeds IEC standards by 20% with full series short-circuit test certification

Question 9

How are transformers packaged and shipped?

Accepted Answer

Standard packaging includes wooden crates and pallets, with inner EPS foam and bubble wrap (thickness 5cm) for shock protection, and outer fumigated wooden cases (ISPM 15 compliant with IPPC markings)Special packaging can be arranged upon request. Our factory is close to major ports (e.g., Shanghai), making sea freight export very convenient

Question 10

What are your warranty and after-sales services?

Accepted Answer

The warranty period starts from the date the goods arrive at the destination port, usually counted as arrival date plus 30 days. Our contract explicitly excludes damage caused by grid fluctuations or unauthorized modifications.

Question 11

What are your payment terms and minimum order quantity?

Accepted Answer

Our standard payment term is T/T (wire transfer): 30% deposit upon contract signing, with the remaining 70% paid before shipment or against the Bill of Lading. For long-term partners or large-value orders, L/C terms are negotiable.

Question 12

Do you provide installation guidance and on-site commissioning services?

Accepted Answer

Yes, we offer comprehensive technical support. For export projects, we provide detailed installation manuals, wiring diagrams, and operation videos (available in the target language). Upon request, we can dispatch experienced engineers to the customer's site for installation supervision and commissioning (costs negotiable based on project scale and location).

Question 13

How should key technical parameters such as impedance voltage, temperature rise, and insulation level be understood?

Accepted Answer

Key parameters explained: Impedance voltage (short-circuit impedance) is the percentage of primary voltage required to circulate rated current when the secondary is short-circuited. Standard value is 4% to 10%, affecting voltage regulation and short-circuit current  lower value gives better voltage stability but higher fault current.

Question 14

What if the product is damaged during transportation?

Accepted Answer

We take shipping safety very seriously. All goods are packaged to international standards and covered by full marine insurance (typically under CIF terms, 110% of invoice value, covering all risks and war risks). Customers should inspect the goods within 48 hours of receipt.

Question 15

Do your transformers comply with environmental standards such as RoHS and REACH?

Accepted Answer

Yes, we attach great importance to environmental compliance. All products exported to the EU fully comply with the RoHS Directive (2011/65/EU), restricting six hazardous substances including lead, mercury, and cadmium, and we provide a Declaration of Conformity (DoC). For REACH (EC 1907/2006), we ensure that Substances of Very High Concern (SVHC) are below 0.1% (W/W) and can provide SVHC test reports upon request.

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