Poste d'ouverture et de fermeture de type boîte HWG

HWG-12/24 series box-type switch station, also known as switch station. It is a distribution site that plays a switching role and is used to distribute electric energy; it is the link between the distribution power supply (110kV or 35kV substation) and the distribution network. It is an extension of the 10kV busbar of the distribution power supply, increasing the number of distribution power supplies. .

Technical Parameters

Projets			unit	Compliant with switch unit	Combination electrical unit	circuit breaker unit
Rated voltage			kV	12/24	12/24	12/24
Rated frequency			A	50	50	50
Courant nominal			A	630	Depends on fuse current rating	630
Rated insulation level	alternately and relatively		kV	42/65	42/65	42/65
	lmin power frequency withstand voltage	disjoncteur		48/79	48/79	48/79
	Control and auxiliary circuits			2	2	2
	Lightning impulse withstand voltage	alternately and relatively		75/125	75/125	75/125
	Lightning impulse withstand voltage	disjoncteur		85/145	85/145	85/145
	Rated short-time withstand current		kA	25/4s	—	25/4s
	Rated peak withstand current		kA	50	—	63
Mechanical life		Load switch/circuit breaker	Times	5000		5000
Mechanical life		Isolating/grounding switch		2000	2000	2000
inflation pressure		Rated inflation pressure (gauge pressure at 20°C)	Mpa	0.04	0.04	0.04
inflation pressure		Minimum inflation pressure (gauge pressure at 20°C)		0.02	0.02	0.02
Gas relative leakage rate			%	≤0.01	≤0.01	≤0.01
Air box protection level					IP67
Enclosure rating					IP43