Semi-insulated ring network cabinet: HXGN15-12

The HXGN15-12 AC metal-enclosed semi-insulated loop network switchgear is an indoor complete set designed for 10kV distribution networks. With a rated voltage of 12kV, it primarily serves urban loop power supply systems and is widely used in industrial and mining enterprises, large-scale buildings, and public facilities as a critical device for power distribution, control, and protection.

Model HXGN15-12

product description

This product features a semi-insulated design, with busbars and certain high-voltage live components encased in insulating materials to effectively reduce phase-to-phase and ground distances, resulting in a compact structure. The cabinet is typically constructed from high-quality steel plates, ensuring robustness and reliability. The core switch unit can be flexibly configured with load switches, load switch-fuse combinations, or vacuum circuit breakers, equipped with comprehensive "five-prevention" interlock functions to ensure operational safety. Standard configurations support rated current switching of 630A and transfer current closing, with short-circuit withstand current reaching 20kA/3s.

Key technical parameters

Project‌	Unit‌	numerical value ‌
Rated Voltage	KV	12
Rated Frequency	Hz	50
The rated current of the main busbar and the maximum rated current of the fuse	A	630,125
rated short time withstand current of main circuit and grounding circuit	KA/S	20,3
Main circuit and ground return rated peak current tolerance	KA	50
rated short-circuit closing current of main circuit and grounding circuit	KA	50
Number of times the load switch has been fully opened at full capacity	number of times	100
current of fuse breaking	KA	31.5,40
rated closed-circuit breaking current	A	630
rated transfer current	A	1600
mechanical life	number of times	2000
1min Power Frequency Withstand Voltage (Peak) Relative to Earth, Isolating Switch	KV	42,48
Lightning Impulse Withstand Voltage (Peak) Relative to Earth, Isolating Switch	KV	75,85
Secondary circuit withstand voltage at power frequency for 1 minute	KV	2
levels of protection	-	IP3X
Project‌	Unit‌	numerical value ‌
Rated Voltage	KV	24
Rated Frequency	Hz	50/60
Lightning Impulse Withstand Voltage (Peak)	KV	Phase-to-phase: 60; Isolation break: 79
1min Power Frequency Withstand Voltage（effective value ）	KV	Phase-to-phase:125; Isolation break: 145
Auxiliary control circuit withstand voltage at power frequency	V	200
Rated Current	A	630,1250,1600,2000,2500,3150
Rated Short-Circuit Interrupting Current	KA	20/31.5
Rated Short-Circuit Closing Current (Peak)	KA	50/80
Rated Short-Time Withstand Current	KA	20/31.5
Rated Peak Withstand Current	KA	50/80
Auxiliary Control Circuit Rated Voltage	V	DC or AC 110/220
Protection Degree	-	IP4X（The circuit breaker room door is open or the compartment is IP2X.）IP4X
External Dimensions (Width×Depth×Height)	MM	800×1810×2380/1000×1810×2380
Weight	Kg	840-1440

Operating Conditions

Ambient temperature range

+40℃ (upper limit) to-25℃ (lower limit).

Temperature specifications

Daily average ≤95%, monthly average ≤90%.

Altitude

Not exceeding 2000m;No continuous severe vibrations.

Environment

Clean surroundings free from corrosive gases, flammable vapors, or water vapor.

The ring network cabinet is an ideal choice for the ring network connection and terminal power supply of medium voltage distribution network, which has the characteristics of modular design, easy installation and maintenance, safe and stable operation and high cost performance, and effectively improves the reliability and flexibility of power supply system.

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