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300 KYN28-12(24) switchgear

Category:

High Voltage Complete Switchgear

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cy83207718@163.com

General description:

KYN28 metal-clad switchgear (AC metal-enclosed switchgear), uses imported aluminum-zinc plated steel and high-quality cold-rolled steel for the cabinet material. It is equipped with vacuum circuit breakers (VD4, VS1, 3AH type); the switchgear is a three-phase AC 50HZ indoor complete set of electrical equipment, used for control, protection, and monitoring of 3.6, 7.2, and 12KV power networks.

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Product Description

KYN28-12(24) Metal-clad Switchgear
—— 10 kV / 20 kV dual-voltage platform, core equipment for indoor power distribution and power reception

I. Product Overview
KYN28-12(24) is an indoor metal-clad, withdrawable (center-mounted) high-voltage switchgear designed according to GB 3906-2006 and IEC 62271-200. It is a three-phase 50 Hz switchgear with a rated voltage of 12 kV (expandable to 24 kV), used for power generation plants, substations, industrial and mining enterprises, and large motor power distribution and reception. It has complete "five-prevention" interlocking functions.

II. Technical Parameters

Item	12 kV rating	24 kV rating
Rated Voltage Ur	12 kV	24 kV
Rated Current Ir	630 – 4000 A	630 – 3150 A
Rated Short-Circuit Breaking Current Ik	25 / 31.5 / 40 / 50 kA	25 / 31.5 / 40 kA
Rated Short-Time Withstand Current Icw (4 s)	25 / 31.5 / 40 kA	25 / 31.5 / 40 kA
Rated Peak Withstand Current Ip	63 / 80 / 100 / 125 kA	63 / 80 / 100 kA
Power Frequency Withstand Voltage (1 min)	42 kV	50 kV
Lightning Impulse Withstand Voltage	75 kV	125 kV
Protection Level	Enclosure IP4X, Compartment IP2X	Same as above
Internal Arc Classification	IAC AFLR 31.5 kA / 1 s	Same as above
Mechanical Life	≥ 20,000 times	≥ 20,000 times
Optional Circuit Breaker	VS1(ZN63), VD4, VK series	Same as above

III. Structural Features
1. The cabinet is made of imported aluminum-zinc coated steel plate with multiple bending and bolting, ensuring high cabinet strength, light weight, and corrosion resistance.
2. Center-mounted trolley: plug-in interchangeable, with mechanical interlocking in "operation-test-isolation" three positions, convenient for maintenance.
3. Four independent compartments: circuit breaker compartment, busbar compartment, cable compartment, and low-voltage instrument compartment. Independent pressure relief channels ensure personal safety in case of faults.
4. The cable compartment has ample space and can connect multiple 1×240 mm² XLPE cables; cable entry/exit can be any combination of top/bottom.
5. Optional heater, lighting, and temperature and humidity controller to prevent condensation and salt spray corrosion.

IV. Typical Dimensions (Width × Depth × Height)

Rated Current	12 kV Cabinet	24 kV Cabinet
≤ 1250 A	800 × 1500 × 2300 mm	800 × 1650 × 2300 mm
1600 – 3150 A	1000 × 1500 × 2300 mm	1000 × 1750 × 2300 mm

V. Application Scenarios
• Urban distribution network substations, ring networks
• Power plant auxiliary power, small and medium-sized generator outlets
• Substations for metro, data centers, and hospitals (10 kV / 20 kV)
• On-site power distribution and starting of high-voltage motors in industrial and mining enterprises

VI. Implementation Standards
GB 3906-2006, IEC 62271-200, DL/T 404. Passed the type test of the National High-Voltage Electrical Apparatus Quality Supervision and Inspection Center, with LSC2 loss of operating continuity category.

VII. Ordering Information
Please provide: rated voltage, rated current, short-circuit breaking current, input/output method, circuit breaker brand, and secondary schematic diagram. Supports wall-mounted or back-to-back arrangement, and can be equipped with arc protection, wireless temperature measurement, and intelligent online monitoring.

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