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chad HXGN Box-Type High-Voltage Ring Main Metal-Enclosed Switchgear
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Product Description
HXGN Box-Type High-Voltage Ring Main Metal-Enclosed Switchgear
I. Product Overview
This product is suitable for three-phase AC distribution systems ranging from 3 to 24 kV and 50 Hz, serving as a ring main unit and terminal equipment in complete high-voltage AC switchgear assemblies. It is primarily designed for supplying power at the terminals of 12/24 kV three-phase ring or radial grid systems, capable of interrupting load currents and short-circuit currents, as well as making and breaking short-circuit currents. The vacuum load switch used in this product is sourced from a domestic Chinese manufacturer.
II. The product complies with the following standards:
GB3906, GB/T16926, GB/T11022, DL/T539, DV/T404
II. Model Meaning
III. Operating Environment
1. The ambient air temperature does not exceed 40°C, with a daily average no higher than 35°C; the minimum ambient air temperature is -25°C.
2. The daily average relative humidity does not exceed 95%; the daily average water vapor pressure does not surpass 2.2 kPa; the monthly average relative humidity remains below 90%; and the monthly average water vapor pressure stays under 1.8 kPa.
3. Altitude not exceeding 2000m;
4. Seismic Intensity: 8 degrees; Horizontal Acceleration ≤ 0.4g, Vertical Acceleration ≤ 0.2g;
5. The surrounding air is not noticeably contaminated by dust, smoke, corrosive and/or flammable gases, vapors, or salt spray.
4. Technical Specifications
| Serial Number | Name | Unit | Technical Specifications | ||
| 1 | Rated Voltage | kV | 12 | 24 | |
| 2 | Rated Insulation Level | Lightning Impulse Withstand Voltage | kV | Alternating and opposing: 75; Break gap: 85 | Alternating and opposing: 95; fracture surfaces: 110 |
| 1-minute power frequency withstand voltage | kV | Alternating and opposing: 42; fracture surfaces: 48 | Alternating and opposing—55; fracture surfaces—60 | ||
| 3 | Rated Current | A | 630 | 200 (Vacuum-Powered) | |
| 4 | Rated Short-Circuit Interrupting Current | kA | 20, 25 (Load Switch) | 31.5 (Load Switch + Fuse Combination Device) | |
| 5 | Rated Short-Circuit Making Current (Peak) | kA | 50, 63 (Load Switch) | 80 (Load Switch + Fuse Combination Device) | |
| 6 | Rated Peak Withstand Current | kA | 50, 63 (Load Switch) | 80 (Load Switch + Fuse Combination Device) | |
| 7 | Rated Short-Time Steady Current | 20, 25 (Load Switch) | 31.5 (Load Switch + Fuse Combination Device) | ||
| 8 | Thermal Stability Time | s | 4 | 2 | |
| 9 | Protection Level | IP | IP4X, which becomes IP2X when the circuit breaker room door is opened. | ||
| 10 | Busbar System | Single busbar | |||
| 11 | Mechanical Life of Load Switch | Next time | 5000 (2000 Circuit Breakers) | ||
| 12 | Mechanical Life of Grounding Switch | Next time | 2000 | ||
| 13 | Rated Operating Voltage of Trip and Close Coils | V | DC220/110, AC220/110 | ||
| 14 | Rated Operating Voltage of the Energy Storage Motor | V | DC220/110 | ||
V. Key Features
1. The operating mechanism is a spring-operated type, which can be operated both manually and electrically. The grounding switch and isolating knife are equipped with manual operating mechanisms.
2. The cabinet features an assembled structure with a fully enclosed metal design, achieving a protection rating of IP2X to IP4X.
3. The main components inside the cabinet—vacuum load switches and pneumatic load switches—can be used either individually or in combination with fuses, disconnecting switches, grounding switches, voltage transformers, and current transformers. Additionally, the fuses can be paired with transformers of varying capacities, ensuring they meet diverse operational requirements while effectively interrupting both load currents and short-circuit currents—and even enabling the switching of short-circuit currents.
4. This product can be powered by a ring network, used for terminal power supply, or installed in box-type substations.
5. This cabinet features a simple, lightweight design, is easy to install, and boasts a clear isolation break—making it safe and reliable.
Company Address:
No. 9 Qianfeng North Road, Shiji Town, Panyu District, Guangzhou City
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