Manufacture Capability – Dinghongtransformer

Built to Manufacture Reliable Power Equipment

DHDL focuses on transformer manufacturing, high and low voltage complete equipment, prefabricated substations and new energy supporting systems. From core processing and winding to assembly, testing and delivery, we build practical power equipment for real project operation.

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Factory Overview

Complete manufacturing support from transformer body to power distribution equipment.

Shandong Dinghong Electric Power Equipment Co., Ltd. is located at the foot of Mount Tai and operates as a professional power equipment manufacturer. The company produces power transformers, special transformers, high and low voltage distribution cabinets, prefabricated cabins and new energy supporting equipment.

The product range covers oil-immersed transformers, dry-type transformers, special transformers, box-type substations, high-voltage cabinets, low-voltage cabinets, functional supporting cabinets, charging piles and energy storage cabinets.

Power transformers and special transformers for distribution and industrial applications.
High and low voltage switchgear for complete power distribution systems.
Prefabricated substations, energy storage cabinets and EV charging equipment for new energy projects.

What we manufacture

DHDL provides a practical product system covering transformer production, complete power distribution equipment and new energy supporting solutions.

Oil-Immersed Transformers

Oil-immersed transformers for power distribution systems, substations, industrial projects and outdoor operating environments.

Dry-Type Transformers

Dry-type transformers for buildings, factories, schools, stations, commercial centers and indoor load centers.

Special Transformers

Furnace transformers, rectifier transformers, phase-shifting transformers and grounding transformers for industrial applications.

Switchgear & Cabinets

High-voltage cabinets, low-voltage cabinets, compensation cabinets, metering cabinets and coupling cabinets.

Box-Type Substations

Compact substation solutions integrating transformer, switchgear, protection and low-voltage distribution functions.

Prefabricated Cabins

Prefabricated power equipment cabins for project-based power distribution and infrastructure applications.

EV Charging Equipment

AC charging piles, DC charging piles and liquid-cooled supercharging equipment for charging station projects.

Energy Storage Cabinets

Commercial and industrial liquid-cooled storage cabinets and integrated PV-storage-charging equipment.

From materials to finished equipment

Transformer reliability depends on stable internal processes. DHDL focuses on standardized production, process control and final inspection to reduce quality fluctuation.

01. Material Preparation

Key materials such as silicon steel sheets, conductors and insulation materials are checked before production.

02. Core Processing

Core processing and loss control are managed to support low-loss, stable transformer operation.

03. Winding Production

Winding structure, conductor selection and insulation treatment are controlled according to product requirements.

04. Vacuum Drying

Vacuum drying and insulation processing help improve moisture resistance and long-term electrical reliability.

05.Assembly

Transformer body assembly, tank assembly, switchgear installation and complete equipment integration are arranged by process.

06. Final Inspection

Finished equipment is inspected and tested before delivery to confirm performance, safety and project readiness.

Testing Capability

Process quality control, not only final testing.

DHDL emphasizes complete quality control from raw material inspection to semi-finished product checks and finished product testing. For transformer products, internal process stability directly affects service life, temperature rise, insulation aging and long-term operating safety.

Each transformer can be tested according to product type, technical standard and project requirements. Test reports and technical documents can be prepared for project acceptance and operation reference.

Turns Ratio Test

DC Resistance Test

Insulation Resistance Test

Power Frequency Withstand Test

Induced Withstand Voltage Test

No-Load Loss Test

Sealing Performance Test

Manufacturing for different markets and project environments

DHDL supports customized production according to voltage level, frequency, standard, installation environment, application scenario and customer branding requirements.

Standard Adaptation

Support for IEC, GB, ANSI / IEEE and project-specific requirements, with 50Hz / 60Hz frequency options.

Environmental Design

Design considerations for high temperature, high humidity, high altitude, dusty areas and outdoor operating conditions.

OEM / ODM Support

Custom logo, nameplate language, cabinet color, packaging and project-specific technical documentation.

Batch Production

Mature product structure and standardized production flow support stable batch supply for long-term cooperation.

Export Packaging

Moisture protection, reinforcement, container loading optimization and shipping coordination for overseas delivery.

Technical Documents

Product drawings, test reports, packing list, user manuals and technical files can be prepared for project use.

Looking for a reliable transformer manufacturer?

Send us your capacity, voltage combination, frequency, standard, installation environment and quantity. DHDL will help confirm suitable product options and manufacturing support for your project.