A high-voltage switchgear system is a complete power distribution unit that integrates control, measurement, and protection functions, with high-voltage switchgear as its core. It is mainly used for power distribution and control in power systems. Specific information is as follows:
Core Components: Includes high-voltage switchgear (such as vacuum circuit breakers and disconnectors) and auxiliary equipment, such as control cabinets, measuring instruments, signaling devices, and protection devices. All components are electrically or mechanically connected to form a complete system.
Functions and Roles
Control: Enables the connection and disconnection of circuits, ensuring stable operation of the power system;
Measurement: Monitors electrical parameters through current and voltage transformers;
Protection: Prevents fault escalation through relay protection devices;
Adjustment: Supports dynamic distribution of power load
Structural Features
Adopts a combination design of fixed cabinet and movable handcart for easy maintenance and equipment replacement. Available in enclosed and semi-enclosed structures to meet different environmental requirements.
Common Classification Methods
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Classification dimensions |
Model |
Feature and application |
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Installation Location
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Indoor (KYN) |
Primarily used in power distribution rooms in factories and buildings, where a dry and clean environment is required. |
|
Outdoor Type (Pre-assembled Substation) |
Commonly used in substations and open-pit mining areas, with a high protection rating. |
|
|
Insulating medium
|
Air insulation |
Conventional type, larger in size, lower cost. |
|
(GIS) |
Utilizing SF6 gas, it features a compact design and high reliability, making it suitable for urban substations. |
|
|
Function and Purpose
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Incoming cabinet |
Receives power from an upstream source and is typically equipped with metering and protection. |
|
Coming cabinet |
Distribute electrical power to downstream transformers or loads. |
|
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PT / Capacitor Cabinet |
For voltage measurement or power factor correction |
Selection and Application Scenarios
Power Systems: 10kV or 35kV distribution rooms in substations are its primary applications.
Industrial Sector: Central distribution stations in large factories and mines such as steel, chemical, and mining industries.
Key Selection Criteria: The specific cabinet type (such as the common KYN28 series) must be selected based on load capacity, short-circuit current level, whether frequent operation is required, and installation space.
Safety Red Line
High-voltage switchgear involves high voltage and high current. Operation and maintenance must strictly adhere to the "five preventions" requirements (such as preventing accidental opening and closing of circuit breakers, preventing live grounding, etc.). Generally, only certified professionals can operate it.
KYN28-12 indoor armored metal-enclosed switch equipment
KYN28-12 indoor armored metal-enclosed switch equipment (hereinafter referred to as KYN28-12 switchgear) is suitable for three-phase AC 50HZ, 7.2~17.5kV single busbar and single busbar sectionalized power system, with perfect "five-proof" function. The removable part of the switchgear cabinet can be equipped with extractable vacuum circuit breaker or vacuum contactor, isolation trolley, PT trolley and other components.
KYN28-12 indoor armored metal-enclosed switch equipment is used in Power plant,industrial field (chemical, steel, petroleum, coal, etc,power grid system,power infrastructure.
contact us
Shaanxi West Power Tongzhong Electrical Co., Ltd.
Contact: Ms.Grace Liu (International Sales Manager)
Tel: +86 917 3661109 Fax: +86 917 6739416
Mobile: +86 18091765882(WhatsApp/Wechat/Facebook/Telegram)
Email:xdtz04@westpowerelectric.com
