Environmentally Friendly Gas-insulated Ring Main Unit

The HCBXGN-12 series of environmentally friendly gas-insulated AC metal-enclosed switchgear and control equipment (hereinafter referred to as the HCBXGN series of switchgear) is an environmentally friendly gas-insulated medium-voltage switchgear independently developed by Jiangsu Huachen Transformer Co., Ltd. The HCBXGN-12 series of switchgear is a completely sealed system.

All primary components and live parts of the switch are enclosed in a stainless steel housing, which is not affected by the environment.

The product adopts a modular design and can be arranged arbitrarily according to different design schemes to achieve the combination of common-box and extended-unit types, meeting the compact switchgear requirements of various secondary power distribution substations.

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Product Description

Model Naming Rules

This model follows the standard HC B X G N [Design Number] - [Rated Voltage (kV)] / [Rated Current (A)] - [Rated Short-Time Withstand Current (kA)] ([Unit Code]):

HC: Huachen (Brand)

B: Environmentally Friendly Gas Insulation

X: Box Type

G: Fixed Type

N: Indoor Type

For example: HCBXGN-12/630-20(V) = Huachen Box-Type Fixed Indoor Gas Insulated Switchgear, 12kV, 630A, 20kA Short-Time Withstand Current, Circuit Breaker Unit

Unit Code Definition

Unit Code	Meaning	Unit Code	Meaning
PT	Voltage Transformer Unit	`+`	Busbar Side Bushing
V	Circuit Breaker Unit	`-`	Busbar Top Bushing
D	Cable Inlet Unit

Core Product Features

The HCBXGN-12 series of switchgear has passed the type test at the national-level high-voltage electrical test center. It can be widely used in small secondary distribution substations, box-type switchgear stations, industrial and mining enterprises, airports, railways, commercial areas, high-rise buildings, expressways, subways, tunnels, and areas with harsh natural conditions. It features environmental friendliness, reliable operation, safety guarantee, compact structural design, small space occupation, maintenance-free, long service life, and strong environmental adaptability.

12kV Installation Dimensions

Unit Type	Expansion Type	Width (mm)	Height (mm)	Depth (mm)
V (Breaker)	Top Expansion	420	1950	850
	Side Expansion	420	2000	850
PT (Voltage Transformer)	Top Expansion	600	1950	850
	Side Expansion	600	2000	850
D (Cable Inlet)	Top Expansion	420	1950	850
	Side Expansion	420	2000	850

Executive standard

Standard	Title
GB/T 311.1	Insulation Coordination – Part 1: Definitions, Principles and Rules
GB/T 1984	High-Voltage Alternating Current Circuit-Breakers
GB/T 1985	High-Voltage Alternating Current Disconnectors and Earthing Switches
GB/T 3804	3.6kV~40.5kV High-Voltage Alternating Current Load Switches
GB/T 3906	3.6kV~40.5kV AC Metal-Enclosed Switchgear and Controlgear
GB/T 4208	Degrees of Protection Provided by Enclosures (IP Code)
GB/T 11022	Common Technical Requirements for High-Voltage Switchgear and Controlgear Standards
DL/T 404	3.6kV~40.5kV AC Metal-Enclosed Switchgear and Controlgear
DL/T 402	High-Voltage Alternating Current Circuit-Breakers
DL/T 593	Common Technical Requirements for High-Voltage Switchgear and Controlgear Standards
12kV Ring Main Unit (Box) Standardized Design and Customization Scheme (2023 Edition)