The main classification of 10kV high-voltage distribution cabinet and its characteristics

Release time:

2025-04-10

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Abstract

I. Classification according to circuit breaker installation method
Removable type (trolley type)
Marking: “Y” in the model number (e.g. KYN28A-12).
Characteristics: Circuit breakers and other core components are installed in the withdrawable handcart, which is interchangeable, easy to maintain and improves the reliability of power supply.
Common models: KYN28A-12, KYN44-12, etc.
Fixed type
Marking: “G” in the model number (e.g. XGN2-12).
Characteristics: Components (e.g. circuit breakers, load switches) are fixed mounted, with simple structure and low cost, suitable for scenarios that do not require high maintainability.
Common models: XGN2-12, GG-1A and so on.
Second, according to the cabinet structure classification
Metal-enclosed armored type
Marking: starting with “K” (such as KYN28A-12).
Characteristics: the compartment inside the cabinet is separated by metal partitions, and the components such as circuit breakers and busbars are isolated independently, with high safety and suitable for complex environments.
Common models: KYN28A-12, KGN type.
Metal-enclosed interval type
Marking: Starting with “J” (e.g. JYN2-12).
Characteristics: non-metallic partitions are used in the compartment, taking into account the protection and cost, and the structure is flexible.
Metal-enclosed box type
Marking: Starting with “X” (such as XGN2-12).
Characteristics: full metal shell, fewer compartments, compact structure, economical and practical.
Common models: XGN2-12, HXGN series.
Open type
Characteristics: part of the area is open, lower protection level, less used in high-voltage scenes.
C. Classification according to insulation type
Air insulated cabinet (AIS cabinet)
Characteristics: busbar is exposed in the air, porcelain column type or can type circuit breaker is used, low cost, simple installation, but the volume is larger.
Applicable scenes: conventional power distribution system, such as substations, factories.
Hybrid insulated cabinet (H-GIS cabinet)
Characteristics: busbar is air insulated, switch is insulated with SF₆ gas, volume is smaller than AIS cabinet, higher reliability.
Totally enclosed gas insulated cabinet (GIS cabinet/SF₆ cabinet)
Features: busbar and core components sealed in SF₆ gas, fully insulated, fully enclosed, small footprint, maintenance-free, high security.
Common models: HXGN17-12, SM6 series.
Fourth, according to the function type classification
Inlet cabinet: used for accessing high-voltage power supply, equipped with circuit breaker or load switch.
Outlet cabinet: used for distributing electric energy, connecting cable or transformer.
Metering cabinet: integrating power metering equipment (e.g. voltage transformer, current transformer).
PT cabinet (voltage mutual inductance cabinet): provides secondary voltage for protection and measurement.
Isolation cabinet: only for electrical isolation, no switching equipment.
Ring network cabinet: constitute the ring network power supply system, support “hand in hand” wiring, typical models such as HXGN17-12.
V. Classification according to installation location
Indoor type
Marking: the model contains “N” (such as KYN28A-12).
Characteristics: suitable for indoor environment, compact structure.
Outdoor type
Marking: Model number contains “W” (e.g. XLW).
Characteristics: waterproof and dustproof (e.g. IP67), resistant to harsh environments, e.g. common box type SF₆ ring network cabinet.
VI. Typical Model Examples
KYN28A-12: armored removable middle cabinet, indoor use, support frequent operation.
HXGN17-12: SF₆ ring network cabinet, fully insulated design, suitable for ring network power supply.
XGN2-12: box-type fixed cabinet, economical and practical, suitable for distribution terminals.
GG-1A: fixed cabinet, simple structure, commonly used in small power distribution system.
Summarize
The classification of 10kV high-voltage distribution cabinet should be selected according to the actual needs (such as installation environment, insulation requirements, maintenance convenience, etc.). For example:

High reliability requirements: prioritize SF₆ fully enclosed cabinet (GIS cabinet).
Limited space: choose hybrid or fully enclosed cabinets.
Cost-sensitive: air-insulated fixed cabinets are more economical.
Ring network power supply: ring network cabinet (such as HXGN series) is required.

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