0102030405
KYN28A-24 Armored Removable AC Metal-Enclosed Switchgear - Quality China Suppliers & Factory for High Voltage Solutions
Model and Definitions
Application Conditions
Ambient Air Temperature: Maximum temperature 40℃, minimum temperature -15℃;
Relative Humidity: Daily average not exceeding 95%, daily average vapor pressure not exceeding 2.2 kPa; monthly average not exceeding 90%, monthly average vapor pressure not exceeding 1.8 kPa;
Altitude: 1000m and below;
Seismic Intensity: Not exceeding 8 degrees;
Surrounding air should not be significantly polluted by corrosive or flammable gases, water vapor, etc.;
No frequent severe vibration in the area;
If used under conditions exceeding the normal environmental conditions specified in GB3906, it should be negotiated between the user and the manufacturer.
Technical Specifications
| Items | Units | Data | ||||
| Nominal Voltage | kV | 24 | ||||
| Rated Frequency | Hz | 50 | ||||
| Circuit Breaker Rated Currency | A | 630 , 1250 , 1600 , 2000 , 2500 , 3150 , 4000 | ||||
| Switch Cabinet Rated Currency | A | 630 , 1250 , 1600 , 2000 , 2500 , 3150 , 4000 | ||||
| Rated Dynamic Stability Current(4s) | KA | 16 , 20 , 25 , 31.5 , 40 , 50 | ||||
| Rated Stability Current (Peak) | KA | 40 , 50 , 63 , 80 , 100 , 125 | ||||
| Rated Short-circuit Breaking Current | KA | 16 , 20 , 25 , 31.5 , 40 , 50 | ||||
| Rated Circuit Making Current (Peak) | KA | 40 , 50 , 63 , 80 , 100 , 125 | ||||
| Nominal Insulation Level | 1min Power Frequency Withstand Voltage | Between Poles, Between Pole and Ground | kV | 65 | ||
| Breakdown Voltage between Poles | kV | 79 | ||||
| Lightning lmpulse Withstand Voltage(Peak) | Between Poles, Between Pole and Ground | kV | 125 | |||
| Breakdown Voltage Between Poles | kV | 145 | ||||
| Level of Protection | The shell is lP4X, and the isolation chamber and circuit breaker room are lP2X when the door is open. | |||||
Note: The short-circuit capacity of the current transformer is considered separately.
Structural Features of Products
Structure of the Switchgear (see Figure 1).
Fully metal armored, modular structure with a wide range of combination schemes.
The cabinet body is made of imported aluminum-zinc coated thin steel plate, processed by machine tools, using advanced multiple folding techniques, connected with pull-riveted nuts and high-strength bolts, ensuring high precision, lightweight, high strength, and strong parts interchangeability.
Compatible with VS1-24 series or imported VD4 series vacuum circuit breakers, offering wide applicability, high reliability, and long-term maintenance-free operation.
The truck has operational and testing positions, with positioning and display devices at each location, ensuring safety and reliability.
Various trucks change according to modular block design, ensuring that trucks of the same specification can be freely interchanged, while trucks of different specifications cannot enter.
Grounding switch installation methods: Installed in the middle of the cabinet (front-mounted) to facilitate maintenance from the back of the cabinet with dual-sided access. Installed at the back of the cabinet (rear-mounted) to save space against the wall.
Current transformer installation method: Installed in the rear cable room of the cabinet. Suspended from the bottom of the large bending plate.
The cable room can accommodate up to 9 single-core cables.
Each high-voltage chamber is equipped with a pressure relief channel to ensure personnel safety.
Highly reliable interlocking device that fully meets the "Five Prevention" safety requirements.
The hand truck is transported by a dedicated transport vehicle, making operation easy and flexible.
The front and back doors are equipped with observation windows, allowing for easy monitoring of the working status of the internal components.
Highly reliable interlocking device that fully meets the "Five Prevention" safety requirements.
The hand truck is transported by a dedicated transport vehicle, making operation easy and flexible.
The front and back doors are equipped with observation windows, allowing for easy monitoring of the working status of the internal components.
External Dimensions of Switchgear
Product Features
Main circuit schematic diagram number, purpose, and single line system diagram, Nominal Voltage, Rated Current, Rated Short-circuit Breaking Current, layout of the distribution room, and arrangement configuration diagram of the switchgear, etc.
Requirements for control, measurement, and protection functions of the switchgear, as well as other interlocking and automatic device requirements.
Model, specifications, and quantity of the main electrical components inside the switchgear.
If bus bridges are needed to connect between switchgear or incoming cabinets, provide specific requirements such as the rated current capacity of the bus bridge, span, height from the ground, etc.
If the switchgear is used in special environmental conditions, details should be specified at the time of ordering.
Other special requirements.
Frequently Asked Questions (FAQ)
What are the ambient temperature limits for this switchgear?
The switchgear is designed to operate within an ambient air temperature range of a maximum of 40℃ to a minimum of -15℃.
What is the maximum altitude for standard installation?
The standard design is suitable for installations at altitudes of 1000 meters and below. For higher altitudes, please consult the manufacturer.
Which vacuum circuit breakers are compatible with this switch cabinet?
It is fully compatible with VS1-24 series or imported VD4 series vacuum circuit breakers, ensuring high reliability and low maintenance.
What is the ingress protection (IP) rating of the enclosure?
The outer shell features an IP4X protection level. When the door is open, the isolation chamber and circuit breaker room maintain an IP2X protection rating.
How many cables can be connected inside the cable room?
The spacious cable room design is capable of accommodating up to 9 single-core cables.
Does the switchgear design include safety interlocking?
Yes, the switchgear is equipped with a highly reliable interlocking safety system that fully satisfies the "Five Prevention" safety requirements.