KED type traction power supply DC switchgear is a key scientific and technological research product in Henan Province. It is suitable for DC power supply systems to receive and distribute electric energy, and to perform comprehensive measurement, protection and control of circuits.
The product meets the needs of various application occasions with voltage levels ranging from DC 750V to 1 500 V and currents ranging from 2600A to 6000A. This product can be widely used in rail transit, subway, coal mine, metallurgy, tram,
car charging and replacement, airport, port, construction and other projects. It is the core product of the National Development and Reform Commission's strategic emerging industry "Rail Transit Intelligent Power Supply and Safety Equipment" project. At present, our company's KED type DC traction power supply
switch and protection equipment have passed the first set of major technical equipment certifications of the Henan Provincial Commission of Industry and Information Technology.

Product Introduction:

KED type traction power supply DC complete switchgear is a new generation of traction power supply DC complete switchgear developed based on absorbing many years of development and engineering experience in this field at home and abroad, and listening to the valuable opinions of many customers and many experts in this field at home and abroad.

**1. Safe and reliable**

● Online monitoring of line voltage, timely detection of fault hazards, ensuring the safety of equipment, line operation and personnel; Highly reliable circuit breaker structure, the mechanism life reaches 100,000 times; · Maintenance-free isolating switch, mechanical life reaches 30,000 times, maintenance-free during the life period; ● With manual opening and closing functions; ● Complete type test

**2. High-standard technical parameters**

KED type traction power supply DC complete switch and protection equipment fully meet the requirements of GB/T25890-2010, IEC61992-2006, EN 50123-2003 and other standards; · KED type traction power supply DC complete switch and protection equipment have extended electrical life;

KED type traction power supply DC complete switch and protection equipment have extended mechanical life. The mechanical life reaches 30,000 times. The number of operations in each operation cycle in the life test reaches 10,000 times (no lubrication and no adjustment in each operation cycle).

**3. Operating environment**

●    Altitude: ≤2000 m

●     Temperature: —10℃~+40℃

●     Humidity: —— Daily average relative humidity is not more than 95%          

 — Daily average water vapor pressure is not more than 2.2×10-³MPa

—— Monthly average relative humidity is not more than 90%        

 — Monthly average water vapor pressure is not more than 1.8×10-³MPa

● The surrounding air is not obviously polluted by dust, smoke, corrosive or flammable gases, steam or salt mist.

● The earthquake intensity does not exceed 8 degrees, and there is no frequent severe shaking.