KYN28-Type Armored Withdrawable Metal-Enclosed Switchgear
Introduction to the KYN28 Enclosed Metal-Clad Switchgear The KYN28 (Z) series of high-voltage, enclosed, metal-clad switchgear is a complete distribution device designed for 3.6 to 40.5 kV, three-phase, 50 Hz AC power systems. It is primarily used in single-bus and single-bus sectionalized configurations in power plants, substations, and distribution centers within the power grid. This equipment serves key functions such as receiving and distributing electrical power, as well as providing power distribution for industrial, mining, and commercial enterprises, and facilitating the starting of large high-voltage motors. Additionally, it enables precise control, monitoring, and protection of electrical circuits.
Category:
Product Center
Metal-enclosed switchgear and control equipment for power distribution
Keywords:
Switchgear
AC Metal-Enclosed Switchgear
High-Voltage Armored Withdrawable Type
Center-Mounted
Service hotline:
KYN28-Type Armored Withdrawable Metal-Enclosed Switchgear
Detailed introduction
KYN28-Type Armored Withdrawable Metal-Enclosed Switchgear
I. Product Overview
The KYN28(Z) type high-voltage armored withdrawable (center-mounted) AC metal-enclosed switchgear is a complete set of distribution equipment designed for 3.6 to 40.5 kV, three-phase, 50 Hz power grids, primarily used in single-bus and single-bus sectionalized systems at power plants, as well as substations and distribution stations within the power system. It serves key applications such as incoming and outgoing power supply, industrial and commercial power distribution, and the starting of large high-voltage motors, while also providing control, monitoring, and protection functions for its associated circuits.
II. Model Description
III. Environmental Requirements
1. Ambient air temperature: Upper limit +40°C, lower limit -10°C;
2. Relative Humidity: Daily average not exceeding 95%, monthly average not exceeding 90%;
3. Saturation Vapor Pressure: The daily average shall not exceed 2.2 × 10⁻³ MPa, and the monthly average shall not exceed 1.8 × 10⁻³ MPa;
4. Altitude: Not exceeding 2000 meters;
5. Earthquake intensity does not exceed magnitude 8;
6. Locations free from fire hazards, explosion risks, severe pollution, chemical corrosion, and intense vibrations.
7. When used in normal environments exceeding the specifications outlined in GB3906, users should consult with the manufacturer.
IV. Product Features
1. Complies with IEC 60298 "AC metal-enclosed switchgear and controlgear rated for voltages above 1 kV and up to and including 52 kV"
, the requirements of standards such as IEC694 "Common Specifications for High-Voltage Switchgear and Control Equipment," GB3906 "3.6~40.5kV AC Metal-Enclosed Switchgear and Control Equipment," and DL/T404 "Technical Specifications for Ordering Indoor AC High-Voltage Switchgear." It features comprehensive and reliable "five-protection" functions to prevent operational errors;
2. It can be equipped with imported VD4, VB2, and HVX12 vacuum circuit breakers, as well as domestically produced VS1 vacuum circuit breakers, enabling door-closing operation; an electric chassis can also be added according to project requirements.
3. The cable room features ample space, allowing for the connection of multiple cables and ensuring convenient installation and maintenance;
4. The entire assembly consists of two main components: the cabinet body and the centrally positioned, withdrawable unit (i.e., the handcart). The cabinet body is divided into four separate compartments, with an enclosure protection rating of IP4X. When the doors to the individual compartments and the circuit breaker room are open, the protection rating drops to IP2X.
4. The circuit breaker is easy to replace, features excellent hand-cart interchangeability, and requires minimal maintenance;
5. The cabinet body is made of aluminized zinc-coated steel sheets, offering excellent corrosion resistance; busbars between cabinets are separated by insulating sleeves to prevent the spread of accidents.
6. The grounding switch features rapid make-and-break capability, offers convenient access for maintenance, and ensures personal safety; electric operation can be added according to project requirements.
7. Equipped with anti-condensation and anti-pollution features, the circuit breaker chamber, relay chamber, and cable compartment can each be fitted with heaters upon request to prevent condensation and corrosion.
8. The circuit breaker room and cable room can be equipped with lighting devices upon request, facilitating maintenance and inspection work.
9. It features overhead and cable incoming/outgoing lines, as well as other functional configurations, which, after arrangement and combination, form a complete distribution system installation.
10. Monitoring devices such as partial discharge, temperature, and video surveillance can be added to enable fully intelligent background monitoring and maintenance.
V. Switchgear Technical Specifications
| Project | Unit | Parameters | |||
| Rated frequency | Hz | 50 | |||
| Rated Voltage | kV | 6 | 10 | 20 | 35 |
| Maximum Operating Voltage | kV | 7 | 12 | 24 | 40.5 |
| Rated Current | A | 630, 1250, 1600, 2000, 2500, 3150, 4000 | |||
| Rated Short-Time Withstand Current | kA | 20 | 25 | 31.5 | 40 |
| Rated Peak Withstand Current | kA | 50 | 63 | 80 | 100 |
| Thermal Stability Time | s | 4 | |||
| Power-frequency withstand voltage to ground and between phases/isolation breaks | kV | 32/36 | 42/48 | 55/60 | 95/118 |
| Lightning Impulse Withstand Voltage to Ground and Between Phases/Isolation Breaks | kV | 60/70 | 75/85 | 95/110 | 185/215 |
| Protection Level | IP4X, which becomes IP2X when the circuit breaker compartment door is open. | ||||
| Busbar System | Single-bus and single-bus sectionalized configurations | ||||
| Busbar rated thermal current | kA | 25, 31.5, 40 | |||
| Vacuum Circuit Breaker Mechanical Life | Next time | 20000 | |||
| Isolation and Grounding Switch Mechanical Life | Next time | 2000 | |||
| Rated Operating Voltage of Trip and Close Coils | V | DC220/110, AC220/110, DC48 | |||
| Rated Operating Voltage of the Energy Storage Motor | V | DC220/110, AC220/110, DC48 | |||
6. Structural Diagram
1: Lightning Arrester
2: Grounding Switch
3. Grounding Main Busbar
4. Current Transformer
5: Static Contact Box
6: Circuit Breaker
7: Main Bus
8: Valve Baffle
9: Secondary Plug
10: Removable Horizontal Partition
11: Grounding Switch Operating Lever
12: Zero-Sequence Current Transformer
A: Handcart Room
B: Busbar Room
C: Cable Room
D: Instrument Room
E: Pressure Relief Channel
The switchgear features an armored, withdrawable metal-enclosed design, comprising a cabinet body and removable components (center-mounted hand carts). The cabinet is divided into compartments: the circuit breaker room, busbar room, cable room, and instrument room. The enclosure provides an IP4X protection rating, while the protection level between individual compartments—and when the circuit breaker room door is open—rises to IP2X. This switchgear supports various functional configurations, including overhead line connections, cable feed-in/out options, and other tailored solutions. Through proper arrangement and combination, it can be configured into a wide range of distribution systems to meet diverse application needs.
The enclosure of the switchgear is crafted from imported aluminum-zinc coated steel sheets, precisely processed using CNC machines and subjected to double bending. It is assembled with pull-rivet nuts and high-strength bolts, resulting in a sleek, aesthetically pleasing design with exact dimensions. Additionally, the material boasts exceptional resistance to corrosion and oxidation.
Company Address:
No. 9 Qianfeng North Road, Shiji Town, Panyu District, Guangzhou City
Follow us
Copyright © Guangzhou Yibian Electrical Equipment Co., Ltd. Urban sub station Power by 300.cn SEO