Ultra-Low Noise Operation
Power distribution projects near hospitals, commercial centers and residential areas have strict noise limits, as excessive noise can lead to complaints or non-compliance risks.
Kechang's gas-insulated medium-voltage switchgear operates with ultra-low noise through optimized design. With high-precision silent operating mechanism, improved core lamination and shock-absorbing enclosure structure, the noise level is controlled below 42dB, well below the IEC standard limit.
The sealed gas tank further isolates internal mechanical vibration, producing almost no noticeable noise even during night low-load operation. It is ideal for noise-sensitive environments and is an excellent low-noise solution for medium-voltage GIS.
Rapid On-Site Installation
Power distribution projects usually have tight schedules, and complicated on-site installation often causes delays and higher labor costs.
Our equipment uses a pre‑integrated modular design. All core parts are assembled, tested and gas‑filled in the factory. After delivery, only three steps are needed: fixing, cable connection and power test. Installation and commissioning can be finished in 2 days, 70% faster than traditional equipment.
With standard quick‑connect interfaces, wiring needs no complex calibration. We also provide detailed installation guides and on‑site technical support, greatly simplifying installation. It is ideal for rush projects such as old community renovation and emergency power supply.
Adaptive Heat Dissipation System
Long-term high-load operation of medium-voltage equipment is prone to hidden dangers of temperature rise, which affects the insulation performance and service life.Gas Insulated Medium Voltage switchgear adopts an adaptive natural air cooling system to optimize the layout of the cooling channel of the air tank, and cooperates with the excellent thermal conductivity of the insulating gas to achieve efficient heat dissipation.For high temperature or high load scenarios in summer, there is no need to install additional fans, and the temperature rise can be controlled within the allowable range of Class F insulation through the air tank's own cooling structure, which not only reduces the operation and maintenance risks caused by fan failure, but also reduces energy consumption, and adapts to the stable operation requirements of different load fluctuation scenarios.
Custom Interface & Compliance Support
The docking and voltage level requirements of switchgear for different projects vary significantly, making it difficult for standardized products to be accurately adapted.Kechang can customize the configuration of different voltage levels from 6kV to 24kV according to the actual project, flexibly adjust the size and wiring interface of the gas tank, adapt to the two wiring methods of copper bar and cable, and perfectly connect to the existing power distribution system.The products fully comply with IEC 62271-203, CE, RoHS and other standards, with a complete quality inspection report and compliance statement, provide localized certification assistance for overseas projects, and issue customized solutions within 48 hours to ensure product adaptability and compliance, and solve the problem of adaptation in multiple scenarios.
Application Scenarios
Power Plants and Substations: Delivers safe and efficient electricity distribution for large-scale power generation and transmission.
Industrial Facilities: Supports factories, refineries, and continuous high-demand operations with reliable medium-voltage power.
Commercial Infrastructure: Powers airports, metro systems, hospitals, office complexes, and shopping centers efficiently.
Renewable Energy Integration: Ensures stable connection and distribution for solar parks, wind farms, and hybrid energy grids.
Heavy Industry Environments: Suitable for mining, petrochemical, and large-scale industrial installations requiring robust and durable switchgear solutions.
Working Conditions
- Environment Temperature: -10℃~+40℃;
- Altitude: no more than 1000m;
- Relative humidity: daily average ≤95%, monthly average ≤90%;
- Installation site: not suitable for indoor places with corrosive, serious filth, flammable gas and severe vibration;
- If it exceeds the above conditions, the user can negotiate with our company.
Model Meaning
Product Specifications
| Project | Unit | Parameter | |
| Rated voltage | KV | 40.5 | |
| Rated frequency | HZ | 50 | |
| Rated current | A | 630,1250,1600,2000 | |
| Rated short circuit breaking current | A | 20,25,31.5 | |
| Rated short circuit current(peak) | KA | 50,63,80 | |
| Rated dynamic current(peak) | KA | 50,63,80 | |
| 4s thermal current(rms) | KA | 20,25,31.5 | |
| Rated insulatin level | Lightning impulse withstand voltage(full wave) | KA | 185,215 |
| Power trequency withstand voltage(1min) | KV | 95,118 | |
| protection level of cabinet | KV | The protection level of cabinet is IP4X,and theprotection level between each compartment and in the moment when the circuit-breaker room is opened is IP2X. | |
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