Distribution Transformer for Power Grid

Name: Distribution Transformer for Power Grid
Brand: Wenzhou Yuanda Electrical Equipment Co., Ltd.
SKU: 2299737885

Zhejiang, ChinaWenzhou Yuanda Electrical Equipment Co., Ltd.

US$1,000.00

1 Box

Product profile

Customization

Available

Type

Distribution Metering Box

Structure

Fixed Board

Model NO.

SG10

Certification

ISO9001:2000, VDE, CCC

Form

Partly-welded Type

Operation Voltage

High Voltage

Size

3 Uint

Application Range

High-rise Buildings

Shell Material

Stainless Steel

Shell Protection Grade

IP56

Brand

Yuanda

Standard πConfiguration

≤125kVA

Extra π Configuration

160-500kVA

Rated Voltage

33kv

Rated Current

630A

Frequency

50Hz

Rated Capacity

50-2500kVA

Pfr Withstand

42/50/70/95tkv

Bil

75/125/170/185kv

Crust Protection Grade

IP 23

Oil Type 55;Dry Type 65

Noisy Grade

Appearance Dimensions

According to Primacy Wiring Circuit Schema

LV Equipment

Less Than 4000

Transformer

3/75~150/3750

Capacity

Under 2500kVA.

Transport Package

Wooden

Specification

100x150x120

Trademark

yuanda

Origin

China

HS Code

8504231100

Production Capacity

100, 000PCS/Year

Key features

IEC and GB Compliance: Fully compliant with IEC 61439-1/2 and GB7251.1 standards with independent Type Test Certification.

High Short-Circuit Withstand: Rated for 50kA short-time withstand current for 1 second to ensure safety during faults.

Flexible Protection Grade: Standard IP54 for indoor use with optional IP65 customization for enhanced protection.

Form 4B Safety Design: Provides highest internal separation isolating busbars and functional units for maximum safety.

Withdrawable Circuit Breaker: Enables safe maintenance and replacement without de-energizing the entire panel system.

Global Certifications: Holds ISO 9001, CE, CB, UL, ETL, and CCC certifications for international market access.

Custom Engineering Support: Offers full customization including design, samples, and specific project ratings up to 500kVA.

Fast Delivery Timeline: Standard projects ship in 4-6 weeks while custom projects are completed within 8-12 weeks.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceYears of Export ExperienceIn-stock Capacity

Wenzhou Yuanda Electrical Equipment Co., Ltd.

Zhejiang, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 32 Years CertifiedNearest Port: Ningbo Port, Shanghai PortAverage Response Time: ≤24h CertifiedTerms of Payment: LC, T/T, D/P, etc.

AI-Powered supplier vetting

SummaryWenzhou Yuanda Electrical Equipment Co., Ltd. is a China-based manufacturer established in 1993, with 280 employees, more than 10 production lines, 50 quality-control staff, and stated output capacities for voltage stabilizers, miniature circuit breakers, and AC contactors. The supplier reports ISO 9001:2015 certification and product certifications including UL, CE, and 3C, as well as design patent technology. Its stated processes include advanced design software, testing equipment, and controls from raw-material procurement through finished products. However, the available information does not verify contract manufacturing, inventory, overseas services, ODM/OEM, SDK, environmental, or fire-drill capabilities. No customer cases or financial-strength evidence is provided. The audit record identifies TUV Rheinland and a valid report period, but the audit result is recorded as “0” without an explained interpretation.

Supplier typeThe supplier is explicitly identified as a manufacturer and a limited company located in Zhejiang, China. It has operated since 1993, supporting classification as an established manufacturing supplier.

CertificationsThe supplier reports ISO 9001:2015 certification and product certifications including US UL, EC CE, and 3C; it also states that it has held an industrial production permit and received export-advanced-enterprise recognition for three consecutive years. A TUV Rheinland audit report is listed with dates from November 4, 2025 to November 3, 2026, although the recorded audit result of “0” is not explained.

After-Sales capabilityThe supplier states that its marketing center provides comprehensive pre-sale, in-sale, and after-sale service to customers worldwide. However, overseas warehouse, showroom, and overseas agent or branch capabilities are all marked unknown, so the depth and delivery model of after-sales support cannot be fully verified.

R&D capabilityThe supplier reports using PROE/CAD and other design software, integrating decades of low-voltage electrical manufacturing experience, and holding product design patent technology. ODM, SDK, private-mold, 3D-design, and new-product R&D capabilities are marked unknown, limiting confirmation of broader innovation services.

Production capacityThe supplier reports more than 10 production lines, 50 quality-control staff, and stated annual capacities of 1,000,000 voltage-stabilizer boxes, 5,000,000 miniature circuit-breaker boxes, and 2,000,000 AC-contactor bags. It also describes testing equipment and process controls from raw-material procurement through finished production, providing explicit evidence of substantial production and quality-control infrastructure.

Product Q&A

Q:What standards does your low voltage switchgear comply with?

Our switchgear is designed and manufactured in full compliance with the international IEC 61439 series of standards (specifically IEC 61439-1 & -2). We also hold complete Type Test Certification (TTA) from an independent, accredited laboratory to validate the performance and safety claims. Our products also meet relevant national standards such as GB7251.1.

Q:What is the meaning of 'Form 4B' separation?

Form 4B is a classification per IEC 61439 that specifies the highest degree of internal separation within the assembly. It ensures complete isolation between the busbars, functional units (like circuit breakers), and outgoing terminal compartments. This enhances safety by containing any potential internal fault arc, allows for safer maintenance, and prevents faults in one unit from affecting others.

Q:What is the advantage of a withdrawable circuit breaker design?

A withdrawable design allows for the circuit breaker to be easily disconnected, isolated, and physically moved to a 'test' or fully 'withdrawn' position without de-energizing the entire panel. This enables safe and rapid maintenance, testing, or replacement of the breaker, significantly minimizing downtime for critical power systems.

Q:What is the short-circuit withstand rating (Icw) of your panels?

Our standard panels are rated for a short-time withstand current (Icw) of 50kA for 1 second. This means the assembly can withstand the thermal and electromagnetic stresses of a short-circuit fault of that magnitude for the specified time, allowing the upstream protective device to clear the fault without catastrophic failure. Higher ratings can be engineered for specific projects.

Q:What is the typical delivery lead time for a custom switchgear project?

For standard configurations, the lead time is typically 4-6 weeks. For fully customized projects involving complex engineering, the lead time can range from 8 to 12 weeks. We provide a precise timeline upon finalization of the technical specifications and single-line diagram.