75 kVA 3 Phase Distribution Transformer-13.8/0.208 kV | Canada 2024

From energy to the future, the Three-Phase Pad-Mounted Transformer ensures excellence every second!

01 General

1.1 Project Description

This 75 kVA Pad mounted transformer was delivered to Canada in 2024, the rated power of the transformer is 75kVA, the primary voltage and secondary voltage of the transformer are 13.8/0.208kV. This type of pad mounted transformer produced by our company adopts the double fuse full-range protection mode, which greatly reduces the operating cost. In addition, the transformer loss is lower than the national standard, 20 years maintenance-free, economic and environmental protection.

We ensure that each one of our delivered units has undergone rigorous full acceptance testing. We provide one-package service from consulting, quoting, manufacturing, installation, commissioning, training to after sale services, our products are now operating in more than 50 counties in the world. We aim to be your most reliable supplier as well as your best partner in business!

1.2 Technical Specification

75 KVA pad mounted transformer specification and data sheet

1.3 Drawings

75 KVA pad mounted transformer diagram drawing and size.

02 Manufacturing

2.1 Core

The transformer core production process mainly includes the following steps: Material preparation: Select high-quality cold-rolled silicon steel sheet and cut it to appropriate size according to design requirements. Stacking: After coating the silicon steel sheet with film insulating paint, stack the silicon steel sheet one by one according to the E type, C type or ring structure to form the core column and iron yoke. Spot welding or binding: The silicon steel sheet is fixed together by spot welding or non-metal binding to prevent each other from moving due to the electromagnetic force during operation. Through the core or set winding: according to the transformer design, the winding through the core column or set on the core. Inspection and treatment: Check the flatness, clearance and insulation status of the iron core, and correct and supplement insulation treatment if necessary. Assembly and packaging: Assemble the iron core, winding, clamping and other components into a complete transformer core assembly, and package processing to ensure good electrical insulation and mechanical stability.

2.2 Winding

The advantages of foil winding are: good mechanical strength, easy deformation, can withstand short-circuit force; Good electrical strength, uniform impact gradient voltage distribution; Easy to wind. Foil transformer adopts high conductivity aluminum foil as a conductive material, the thickness of aluminum foil is about 0.1 ~ 2.5mm, and each layer of wire foil is one turn. The conductive foil is lined with insulating paper, the thickness is 0.05 ~ 0.12mm, and the diamond dispensing cable paper is generally used. Because there may be metal dust on the surface of the conductive foil board, and the insulating paper will also have small pinholes, high-strength insulating paper should be used as interlayer insulation. The head and tail of the conductive foil plate are welded with a conductive bar (also with cold pressing clamp) as the lead wire of the winding.

2.3 Tank

The transformer oil tank is welded with high strength steel plate. Anti-magnetic shielding measures are adopted inside the fuel tank to reduce stray loss. The magnetic shield is fixed and insulated well, which can effectively avoid overheating or discharge caused by poor contact. All kinds of electrical shields have good conduction and reliable grounding, effectively avoiding suspended discharge or affecting the dielectric loss factor of the winding. In addition, the tank adopts anti-corrosion design and special spray painting treatment, which is suitable for various harsh environments.

2.4 Final Assembly

1. Transformer active part assembly It includes insulation assembly and coil head dressing treatment, coil set, insert plate and clamp, half-finished test of the body, lead assembly (including switch assembly, lead manufacturing and assembly), half-finished test of the body, and furnace drying of the body (including insulation resistance measurement). 2. Total assembly This includes finishing and fastening of the body, measuring the insulation resistance of the iron core to the ground, checking the cleanliness of the body and the tightness of each component, the insulation distance of the wiring and the lead, and filling the oil into the box (including the installation of transformer accessories).

03 Testing

1. Ratio on all connections and tap positions

2. Angular displacement

3. No-load losses at 100% rated voltage

4. Exciting current at 100% rated voltage

5. Load losses and impedance at rated current

6. Applied voltage

7. Induced voltage

8. Transformer tank leak-detection test.

9. A continuity test

04 Packing and Shipping

05 Site And Summary

Thank you for your interest in our three-phase pad-mounted transformer! With its superior performance, reliable safety features, and flexible adaptability, this product provides stable and efficient power support for a wide range of applications, making it the ideal choice for industrial, commercial, and public distribution systems. We are committed to delivering quality-driven, innovation-powered solutions tailored to your needs, ensuring professional and customized power services. We look forward to building a long-term partnership with you and advancing efficiency and sustainability in the power industry together! For more information, please feel free to contact us anytime!