(1) The foundation of the pit can be formed with steel plates above 6mm or more to ensure that the surface water and other debris cannot enter the pit: prefabricated reinforced concrete structure can also be adopted, and advanced waterproof technology can be used leakage.
(2) There is a set of pools at the bottom of the pit, and a submersible pump controlled by an automatic non-water system is installed.
(3) Install a high and low voltage cable installation stand in the pit, which is convenient for the cable installation and fixation.
(4) Waterproof lighting is installed in the pit for easy maintenance.
(5) The foundation top cover has open maintenance holes.
Advertising light box -type outdoor switch equipment
(1) The protective shell of the switching device adopts an advertising light box structure. The two doors of the light box housing can be opened at all angles, and the pneumatic spring support positioning is convenient for the operation and maintenance of the switching equipment.
(2) The light box is equipped with heat insulation, which has a good heat insulation effect.
(3) The two sides of the lamp box housing are advertising boards, and LED emitting elements with small size and uniform light sources are used.
(4) The door locks of the advertising light box and the switching equipment are set independently. The maintenance of the light box does not affect the operation of the switch equipment.
(5) A sound and light alarm device with the shell of the light box, which is damaged by the outside world. Alarm signal can be issued.
(6) The switching equipment adopts a double -layer door structure, the protection level reaches IP34, and the second floor is the instrument door to ensure that after the light box -type shell is destroyed, the low pressure cabinet still reaches the protection level of a complete and independent outdoor low -pressure product.
(7) The fan hidden in the light box shell can automatically exhaust the air and send air supply to reduce temperature and dehumidification in the pit foundation.
Waterproof treatment of buried substation
The underground combination transformer with the change of the ground box allows the immersion in the water, and the waterproof and drainage of the pit is fully designed within the foundation of the pit. For areas with a low groundwater level (lower than the bottom of the pit) The pits structure, the ventilation holes on the top of the pit have effective ventilation and rainproofing capacity. Putting water sand pebbles on the bottom of the pit, water can directly penetrate the ground. For areas with high groundwater level (higher than the bottom of the pit), use The prefabricated fully enclosed concrete pit structure prevents the inflow of surface water and the infiltration of groundwater into the ground pits.
Heat dissipation of buried substation
(1) The underground transformer uses low-loss iron-hearted, rolled iron-hearted or amorphous alloy iron heart products. The air load loss and load loss are largely reduced, so the heat is low.
(2) High heat-resistant levels of transformers have a high degree of temperature rise, and also improved the transformer’s overload ability.
(3) The underground transformer uses a cyclotrophic transformer oil (or high-combustion point oil) to ensure that the product has good heat dissipation capabilities.
(4) Between the power distribution box and the basic ground pits, a air inlet and outlet are set up. When the temperature rise of the local underground combination transformer reaches the set value, it will be given to the air supply.
(1) The box is made of stainless steel and a full seal, and the protective level is IP68, which can be immersed in water.
(2) The high and low pressure in and out lines use the wiring method of waterproof full seal, full insulation, and full shielding, and operate more safely.
(3) Use cyclotrophic transformer oil to ensure good heat dissipation capabilities.
(4) A amorphous alloy iron heart can be used, and the energy saving effect can be used with significant energy saving effect.
(5) High insulation and heat-resistant levels, environmental protection.
(6) Repair and insertion fuses are safer to protect the transformer.
(7) The load switch is in the form of two, three, and four, which is suitable for a variety of power supply systems.
Details :
Half-land buried box-type substation (the cylinder is called the half-ground buried box change, also known as the landscape-type buried box change, which is a new generation of box-type transformer developed on the basis of fully researching and discussing the construction and management of modern urban construction and management. The main part is buried underground, occupying very little, or even the land. The visual effect is very good. It effectively solves the contradiction between urban land tensions and urban psoriasis. It is harmoniously unified with the surrounding environment.
The half-ground buried box-type substation refers to the complete set of the box-type substation installed in the ground landscape light box, the transformer part is installed inside the full-sealing box, and the overall is set below the ground surface. It and the top box on the ground.
For the substation, the internal equipment is the same electrical performance. It is also reduced from 10kV input voltage to 400V power distribution voltage through transformers, and then sent to the use load point. It can be used for the loop network power distribution system.
The landscape light box with a half-ground buried box is used as a cabinet box as a high and low voltage. After implantation of replaceable advertising paintings or LED display structures, it can also be used as a beautiful landscape on the road. Its basement has excellent anti-corrosion ability and compressive ability, and has absolute sealing. Strive to solve the current engineering of electric equipment in installation and maintenance such as air lines, coastal typhoon salt erosion erosion, and many difficulties in environmental vision, and the introduction of an environmentally-friendly half-ground buried box substation for foreign advanced technologies.
Urban public power distribution, high-rise buildings, residential communities, oil fields, parks, stations, airports, subways, highways and other power supply fields.
We adhere to a market-oriented and customer-centric approach. In the highly competitive market, we have consistently earned the trust and recognition of our customers through exceptional product quality and efficient, comprehensive services.
Our solemn commitment to customers:Long-lasting Durability: We ensure that the service life of the supplied transformers is no less than 30 years.
Full-process Quality Control: From the receipt of bid documents, we initiate a comprehensive evaluation to ensure complete alignment with customer requirements. All raw materials and components are sourced from certified suppliers, and strict quality control standards are implemented. The production process strictly follows contracts and technical agreements, ensuring every step meets high-quality standards.
Hassle-free After-sales Service: All performance indicators of our transformers exceed or comply with national standards. Within three years after product installation and commissioning, if oil leakage occurs in oil-immersed transformers due to manufacturing reasons, we will provide free repairs. For any critical component issues arising during production or installation, we will prioritize project progress, address them promptly, and subsequently conduct responsibility analysis and corrective actions. We also sincerely welcome customers to visit our production site for supervision and guidance.
We provide comprehensive after-sales support, including free installation and commissioning guidance. After the product is put into operation, if any assistance is required, our service team will respond quickly:
24/7 Technical Support: We offer round-the-clock online support, including video calls, troubleshooting guides, and technical documentation, ensuring timely assistance for global customers.
Remote Diagnostic Services: Remote detection and diagnostics can be performed based on data provided by customers or through real-time video.
Regular Follow-up Mechanism: We have established a robust regular follow-up system to monitor product operation status online or on-site, ensuring customers can use our products with continuous peace of mind.
For complex issues, we will promptly dispatch experienced engineers to the site within the agreed international response time, providing services such as installation guidance, commissioning, maintenance, and repairs.
Dedicated Service RepresentativeEach customer is assigned a dedicated service representative who coordinates after-sales support, issue resolution, and regular follow-ups, ensuring seamless service throughout the entire process.
Continuous CareAfter installation, we conduct regular on-site or online follow-ups to continuously monitor product performance and promptly respond to customer feedback. Through proactive services, we ensure that equipment always operates at its optimal state, enhancing customer satisfaction.
By integrating rapid response, advanced technical support, and localized service experience, we have built a mature and efficient international service system. We are committed to providing professional and reliable after-sales support for global customers. We look forward to establishing long-term partnerships with you through continuous value delivery and high-quality services.
When purchasing an oil-immersed transformer, you may want to know the following questions & answers.
Pre-Sales FAQs
Q: What types of transformers do you supply?
A: We supply various transformers including Power Transformers, Distribution Transformers, Step-up/Step-down Transformers, Isolation Transformers, Auto-transformers, and Specialty Transformers (for applications like mining, marine, solar, etc.).
Q: Can you provide transformers according to my specific requirements?
A: Absolutely. We specialize in providing tailored solutions. You can specify parameters like power rating (kVA/MVA), input/output voltage, frequency (50Hz/60Hz), vector group, insulation class, cooling method, and standards (IEC, ANSI, IEEE, etc.). Our technical team will review and confirm the feasibility.
Q: What international standards do your transformers comply with?
A: Our transformers primarily comply with IEC standards. We can also provide products meeting ANSI/IEEE, CSA, EN, and other regional standards upon request. Please specify your required certification during inquiry.
Q: What are the common voltage and frequency ratings available?
A: We supply transformers for common global standards (e.g., 11kV, 33kV, 110kV, 220kV) and frequencies (50Hz or 60Hz). Custom combinations for specific markets are also available.
Q: How do I request a quote?
A: Please use our "Contact Us" form or email us directly with your detailed specifications, quantity, and destination port. The more details you provide, the more accurate our quotation will be.
Q: What are your payment terms?
A: Standard terms include T/T (Bank Transfer), 30% deposit with 70% before shipment. Other terms can be negotiated based on order value and relationship.
Q: Do you handle shipping and export documentation?
A: Yes, we are experienced in international trade. We can arrange FOB Shanghai, CIF, or other Incoterms as per your preference. We handle all export documentation including commercial invoice, packing list, bill of lading, certificate of origin, and test reports.
Q: What is your quality control process?
A: We work with certified manufacturers. Our quality control includes factory audits, material inspection, in-process monitoring, and final routine testing. Third-party inspection (SGS, BV, etc.) is welcome and can be arranged.
Q: Do you provide factory test reports?
A: Yes, standard routine test reports (as per IEC 60076) are provided with each shipment. Type tests and special tests can be arranged at the factory with prior notice.
Post-Sales FAQs
Q: What is your warranty policy?
A: We typically offer a standard warranty of 12 months from the date of commissioning or 18 months from the date of shipment, whichever comes first. The warranty covers manufacturing defects under normal operation as per agreed specifications.
Q: What should I do if I receive a damaged product or find a defect?
A: Contact our after-sales team immediately atdemikstransformer@gmail.com. Please provide your order number, photos, and a detailed description of the issue. We will guide you through the claim process and work swiftly to find a solution.
Q: What documents will I receive with the shipment?
A: You will receive a complete set of documents including user manual, wiring diagrams, test reports, certificates (of origin, compliance), and packing list.
Q: Can you provide on-site installation guidance or commissioning support?
A: While we provide detailed installation manuals, we can arrange remote guidance via video call. For complex projects, we can coordinate with the factory to provide on-site technician support at an additional cost.
Q: Do you provide maintenance advice for the transformers?
A: Yes, we provide basic operation and maintenance manuals. Key advice includes regular checks for oil level (for oil-immersed), temperature, unusual noise, and cleanliness. We recommend following local electrical safety regulations.
Q: Can I order spare parts from you?
A: Yes, we supply genuine spare parts like bushings, gauges, tap changers, gaskets, and sometimes cooling fans. Please provide your transformer model and serial number for accurate identification.
Q: Who should I contact for after-sales inquiries?
A: For any technical or service issues, please email our dedicated after-sales team at [Insert Email, e.g., demikstransformer@gmail.com or call +86 13916614261. Please have your order reference ready.
Q: What if I need a repair service not covered under warranty?
A: We offer full repair and refurbishment support. Contact us with the details, and we will provide a diagnostic and a competitive quotation for the repair service.
