What is the lead time for production?

The average lead time is one month for both peak and off-peak seasons.

What certifications does the product have?

The transformer holds ISO9001-2000, ISO9001, CCC, and UL certifications.

What is the cooling method used?

It uses an oil-immersed cooling method with a spiral coil and longitudinal oil path.

150 kVA 35 Kv Oil Immersed Power Transformer

Name: 150 kVA 35 Kv Oil Immersed Power Transformer
Brand: Wenzhou Rockwill Electric Co., Ltd.
SKU: 919842965

Zhejiang, ChinaWenzhou Rockwill Electric Co., Ltd.

US$1,500.00-100,000.00

1 Piece

Product profile

Customization

Available

Application

Power

Phase

Three

Model NO.

S9, S11

Core

Core-type Transformer

Cooling Method

Oil-immersed Type Transformer

Winding Type

Separated Winding Transformer

Certification

ISO9001-2000, ISO9001, CCC

Usage

Power Transformer

Frequency Characteristics

Power Frequency

Shape of Core

Ring

Brand

Rockwell

Color

Gray, Green or Customized

Material

Oil, CRGO, Copper

Transport Package

Wooden Packing

Specification

IEC/ANSI/IEEE/BS/GB

Trademark

Rockwell

Origin

China

HS Code

8504231100

Production Capacity

20000

Key features

High Efficiency and Low Loss: S11 series reduces no-load loss by 30% and no-load current by 70-85% compared to S9 series.

Extended Service Life: Double the product service life with ability to work long-term even under 20% overloads.

Superior Cooling Design: Spiral coil with longitudinal oil path and corrugated tank enhance interior cooling and reliability.

Anti-Short Circuit Capability: Improved terminal surface support strengthens capability against short circuit currents.

Premium Copper Windings: High-quality oxygen-free copper lines with lower resistivity and smooth surface treatment.

Customizable Colors: Available in Gray, Green, or fully customized color options.

Reliable Transport Structure: New hoisting structure and body-positioning frames ensure safe long-distance transport.

Comprehensive Certifications: Certified with ISO9001-2000, ISO9001, CCC, and UL standards.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceYears of Export ExperienceExperienced Team

Wenzhou Rockwill Electric Co., Ltd.

Zhejiang, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 16 Years CertifiedNearest Port: Ningbo Port, Shanghai PortAverage Response Time: ≤10.15h

AI-Powered supplier vetting

SummaryThe supplier is a limited company offering switchgear, compact substations, high- and low-voltage equipment, and transformers. It reports four production lines, 21–30 quality-control staff, one-month lead times in both peak and off-peak periods, and export experience of 16 years with exports representing 51%–70% of sales. It provides broad customization, ODM, SDK, and OEM services, including OEM for known brands. Service governance is supported by written inspection, complaint-handling, corrective-action, and supplier-assessment procedures with records. However, no overseas warehouse, showroom, overseas agent or branch is available, and no overseas service countries are reported. Certification holdings and specific customer case details are not provided. Financial records are indicated for recent years, but the supplied information does not establish financial strength.

Supplier typeThe supplier is identified as a limited company, with a stated business scope covering switchgear, compact substations, high-voltage switchgear, low-voltage complete equipment, and transformers. This establishes a manufacturer or industrial equipment supplier profile, but the record does not provide further ownership or group-structure details.

R&D capabilityThe supplier reports new products within the past year, provides ODM services, and has an available SDK. These are explicit indicators of product-development and technical-support capability.

Production capacityThe supplier operates four production lines, has 21–30 quality-control staff, maintains inventory capability, and reports one-month lead times in both peak and off-peak seasons. It also has valid manufacturing contracts with each related subcontractor and a supplier network of 42 qualified suppliers, supporting production continuity; actual capacity volume is not otherwise established without using the excluded monetary output figure.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, and flexible customization. It also reports ODM capability and new-product activity, providing strong direct evidence of broad customization support.