Project Cases

A: Project Overview

This 35kV KYN28 high voltage switchgear for Middle East municipal substation is designed to meet the strict safety and reliability requirements of public power infrastructure projects. Municipal power procurement teams often face three key concerns: equipment failure in extreme heat, arc safety risks in populated areas, and limited after-sales support in remote regions. This project was engineered to address all three pain points, ensuring long-term stable operation for the local power grid.

One of the most pressing worries for our client was equipment degradation caused by high temperatures. In the Middle East, outdoor temperatures regularly exceed 45°C, which can cause standard switchgears to suffer from insulation aging, poor heat dissipation, and frequent tripping. To solve this, our 35kV KYN28 high voltage switchgear for municipal substation projects features upgraded heat dissipation channels and heat-resistant insulation materials. Internal components are silver-plated to reduce temperature rise and electrical loss, allowing the unit to maintain stable mechanical and insulation performance even under continuous high-temperature exposure.

Another major concern was arc flash safety. Municipal substations are located near residential and commercial areas, so any arc explosion could lead to serious public safety incidents. Unlike standard industrial switchgears, this batch of 35kV KYN28 switchgears includes independent arc-proof pressure relief devices and explosion-proof baffles. In the event of a short circuit, the system instantly releases high-temperature gas to contain the arc, fully complying with IEC 60298 international safety standards.

Thirdly, the client was worried about maintenance and spare parts availability in the remote area. Before shipment, every switchgear underwent full parameter testing and factory acceptance, with clear circuit markings and bilingual maintenance instructions provided. The withdrawable cabinet design allows for quick component replacement without full power shutdown, reducing on-site maintenance difficulty. We also provided detailed English operation manuals, remote technical support, and lifelong spare parts supply to ensure long-term support.

Since commissioning, the switchgear has operated continuously without any faults, supporting residential electricity, commercial lighting, and industrial power distribution in the area. This 35kV KYN28 high voltage switchgear for Middle East municipal substation project demonstrates our ability to deliver customized, high-reliability power equipment that meets both harsh environmental conditions and strict safety standards.

B: Key Technical & Customization Solutions

To address the three core concerns of the municipal procurement team, we implemented targeted upgrades to every aspect of the 35kV KYN28 high voltage switchgear for Middle East municipal substation.

First, for the extreme heat challenge, we upgraded the heat dissipation system with larger radiators and forced air circulation fans, paired with Class F high-temperature insulation materials that maintain performance even at 55°C. All internal copper components are silver-plated to reduce contact resistance and heat generation, preventing thermal aging that is common in standard switchgears operating in desert climates.

Second, for arc safety, we added a dedicated arc-proof pressure relief chamber at the top of each cabinet. In the event of an internal arc fault, the chamber safely releases high-temperature gas within milliseconds, preventing the arc from spreading to adjacent cabinets or causing external explosions. This design complies with IEC 62271-200 arc fault test standards, a non-negotiable requirement for public power infrastructure projects.

Third, to solve the remote maintenance challenge, we designed the cabinets with fully withdrawable circuit breakers and modular components, allowing maintenance teams to replace faulty parts without shutting down the entire substation. Every unit is pre-calibrated and tested at our factory, with detailed bilingual maintenance manuals and QR codes linking to video tutorials provided. We also established a local spare parts warehouse in the Middle East, ensuring fast delivery of replacement components when needed.

C: Project Results & Client Feedback

Since the commissioning of this 35kV KYN28 high voltage switchgear for Middle East municipal substation, the equipment has maintained a 100% uptime rate over the past 12 months. The client reported that the upgraded heat dissipation system eliminated the frequent tripping issues they had experienced with previous switchgears, and the arc-proof design passed all safety inspections by the local power authority.

The procurement team also highlighted the modular maintenance design as a key advantage, as it reduced planned maintenance downtime by 70% compared to their old equipment. This project has since led to a follow-up order for additional switchgears for the city’s expansion phase, demonstrating the client’s trust in our customized solutions for harsh-environment municipal power projects.

D: Inquiry