4 Units of 1250KVA High-Efficiency Power Solution for Large-Scale Tunnel Engineering

Project Overview Application: Infrastructure & Tunn […]

Infrastructure Excellence: 4 Units of 1250KVA Long-Distance Power Solutions for Tunnel Construction

Voltage

10KV

Accuracy

±1%

Efficiency

99.5%

Response

<20ms

Project Overview

  • Application: Infrastructure & Tunnel Construction

  • Product: Long-Distance Voltage Step-up & Step-down Transformer System

  • Capacity: 1250KVA per unit (4 Units Total)

  • Installation Site: On-site Construction Hub

The Challenge

In large-scale tunnel engineering, the power source is often located kilometers away from the actual construction site. This long-distance transmission leads to severe voltage drop, preventing heavy-duty machinery (such as Tunnel Boring Machines) from starting or operating at full capacity. For this project, the contractor needed a robust solution to ensure zero downtime and 100% power stability under harsh outdoor conditions.

Our Solution

Our engineering team designed and deployed 4 sets of 1250KVA high-capacity transformer cabinets. This system utilizes a "Boost-Transmit-Buck" strategy:

  1. Step-Up: Boosting voltage at the source to minimize energy loss during transmission.

  2. Step-Down: Precision voltage regulation at the terminal to provide a steady, rated power supply to the equipment.

Key Technical Features

  • Industrial-Grade Protection: The IP54-rated outdoor enclosures are engineered to withstand dust, moisture, and extreme temperatures common in tunnel environments.

  • Superior Core Technology: Equipped with high-purity copper windings and low-loss silicon steel sheets for maximum efficiency and longevity.

  • Advanced Thermal Management: Integrated ventilation slats and automated cooling fans ensure the units remain within optimal temperature ranges during 24/7 operation.

  • Customized Cabinets: Features a reinforced structure for easy transportation and on-site positioning in rugged terrains.

Results

The units have been successfully commissioned and are currently fully operational. The project team reported a significant improvement in power quality, with no equipment failures due to voltage fluctuations since the installation.

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