HXGN17-12 Box-Type Fixed AC Metal-Enclosed Switchgear - Reliable 12kV Solution by China Suppliers & Factory

Overview

The HXGN17-12 Box-Type Fixed AC Metal-Enclosed Ring Network Switchgear, widely known as a ring network cabinet, operates efficiently at a nominal voltage of 12kV and a rated frequency of 50Hz. As a premier high-voltage solution designed specifically for three-phase AC ring networks, terminal distribution networks, and industrial power supply systems, this product plays a critical role in the safe reception and distribution of electrical energy while providing robust protection. It is also ideal for installation in box-type substations.

This high-quality equipment adheres to GB3906 standards for 3.6~40.5 kV AC metal-enclosed switchgear and control equipment, and it aligns with international standards IEC29Notably, the HXGN17-12 features a reliable five-proof interlocking function that significantly enhances operational safety and reliability. As a leading product by trusted China suppliers and manufactured in top-notch factories, this ring network switchgear is engineered to meet the demands of modern electrical infrastructure.

Product Detail

Standards

GB 3906-2006 "AC Metal-Enclosed Switchgear and Controlgear for Rated Voltages from 3.6 kV to 40.5 kV"
IEC 60298-1990 "Metal-Enclosed Switchgear and Controlgear for Rated Voltages Above 1 kV and Up to 52 kV"
GB/T 11022-2011 "Common Technical Requirements for High-Voltage Switchgear and Controlgear Standards"

Model and Definitions

Conditions of Use

Ambient Temperature: Upper limit +40℃, Lower limit -25℃;
Altitude: Not exceeding 1000m;
Relative Humidity: Daily average not exceeding 95%, Monthly average not exceeding 90%;
Locations free from fire, explosion hazards, and severe vibrations;
Surrounding air must not contain corrosive or flammable gases, water vapor, or conductive dust, avoiding significant contamination.

Major Technical Specifications

No.	Items		Units	FN12-12	FZN25-12
1	Nominal Voltage		kV	12
2	1min Power Frequency Withstand Voltage		kV	Ground and phase-to-phase 42; Isolation Break Point 48
3	Lightning Impulse Voltage (Peak)			Ground and phase-to-phase 75; Isolation Break Point 85
4	Rated Frequency		Hz	50
5	Load Switch	Rated Current	A	630
6		Rated Current Switching Life	Time	Not less than 100
7		Breaking Capacity of No-load Transformer	kVA	1250
8		Rated Thermal Stability Current	kA/s	20/4; Ground switch 20/2
9		Rated Dynamic Stability Current (Peak)	kA	50
10		Rated Circuit Making Current (Peak)		50
11		Fuse Rated Current	A	125
12	Composite Apparatus	Rated Transfer Current	A	870
13		Rated Short-circuit Breaking Current	kA	20
14		Compatible Fuse Model		S □ LAJ-12
15	Machinery Service Life		Time	2000	10000
16	Auxiliary Circuit 1min Power Frequency Withstand Voltage		kV	2
17	Electric Operating Mechanism Working Voltage		V	AC/DC 220; 110
18	Level of Protection			IP2X

Structural Features

The fully assembled structure is lightweight and aesthetically pleasing, allowing for arbitrary combinations and installations, facilitating infinite expansion.
It can be equipped with the FN12-12 type pneumatic Load Switch, Composite Apparatus, or the FZN25-12 type vacuum Load Switch, Composite Apparatus. It is compact, maintenance-free, features a three-phase linkage structure, and has a distinct Isolation Break Point.
The installation method for the Load Switch and Composite Apparatus is flexible, allowing for left-side, right-side, upright, and inverted installations (FZN25 cannot be inverted).
It supports both manual and electric operation and can have remote control capabilities.
Equipped with a complete and reliable mechanical linkage and interlocking device, it fully meets the "five prevention" functions. When the Load Switch is closed, the grounding switch cannot close, and the front door cannot be opened; when the Load Switch is opened, the grounding switch can close, and the front door can be opened when the grounding switch is closed; when the grounding switch is closed, the Load Switch cannot close, but the front door can be opened; when the grounding switch is opened, the Load Switch can open and close, and the front door cannot be opened; when the cable enters from below, if there is power at the entry, regardless of whether the Load Switch is in the closed or open position, the electromagnetic lock controls the front door, preventing it from being opened (except for emergency unlocking with a special key).
The Load Switch uses interlocking protective insulated valves or transparent insulated covers to shield live contacts, ensuring personal safety.
It employs front operation and maintenance, reliably wall-mounted.
The front door is equipped with a viewing window to clearly observe the working conditions of the components inside the cabinet.

External Dimensions

Ordering Notes

When placing an order, the following technical information must be provided:
Main wiring scheme 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 switch cabinet, etc.;
Requirements for the control, measurement, and protection functions of the switch cabinet, as well as the requirements and schematic diagrams for other locking and automatic devices;
Model, specifications, and quantity of the main electrical components in the switch cabinet;
If the switch cabinet is used in special environmental conditions, this should be detailed during the order placement.

Frequently Asked Questions (FAQ)

Which international and national standards do these switchgears comply with?

The equipment complies with GB 3906-2006, IEC 60298-1990, and GB/T 11022-2011 standards, ensuring high quality and safety for high-voltage switchgear and controlgear.

What are the ambient temperature limits for operating this switchgear?

The switchgear is designed for use within an ambient temperature range from a lower limit of -25℃ to an upper limit of +40℃.

Can the FZN25-12 type load switch be installed in an inverted position?

No. While the installation methods for the load switch and composite apparatus are generally flexible (allowing left-side, right-side, upright, and inverted setups), the FZN25 model specifically cannot be inverted.

What is the rated voltage and frequency of the FN12-12 and FZN25-12 models?

Both models feature a nominal voltage of 12 kV and operate at a rated frequency of 50 Hz.

How does the "five prevention" mechanical interlocking linkage function?

The complete mechanical linkage prevents the grounding switch from closing and the front door from opening when the load switch is closed. Conversely, when the load switch is open, the grounding switch can close, and the front door can only be opened when the grounding switch is in the closed position.

What key information must be provided when placing an order?

Customers must provide the main wiring scheme, control and protection requirements, exact models and quantities of the main electrical components, and details of any special environmental operating conditions.