Overview of the products

HXGN15-12 (SF6) unit type AC metal enclosed ring network switchgear (hereinafter referred as the ring main unit) is a new generation of high-voltage electrical products successfully designed and developed in accordance with the requirements of domestic rural power and urban network renovation and by introducing advanced foreign technology. All technical performance indexes of these products meet with IEC62271-2003 and GB3906 standards.

Model and meaning

Electric technical parameters

Project	Unit	Parameters
Rated voltage	kV	12
Rated frequency	Hz	50
Rated current of main busbar/maximum rated current of fuse	A	630,125
Rated short-term withstand current of main circuit and grounding circuit	kA/S	20,3
Rated peak withstand current of main circuit and grounding circuit	kA	50
Rated short-circuit making current of main circuit and grounding circuit	kA	50
Number of full capacity interruptions of load switch	time	100
Breaking current of fuse	kA	31.5,40
Rated closed-loop breaking current	A	630
Rated transfer current	A	1600
Mechanical life	time	2000
1 minute power frequency voltage (peak): between phases, to ground/partition mouth	kV	42,48
Lightning impulse withstand voltage (peak): between phases, to ground/partion mouth	kV	75，85
1 min power frequency withstand voltage of secondary circuit	kV	2
Level of protection		IP3X