FZRN23-12D High voltage vacuum load switchDetailed product description：

Overview
FZN23-12 series vacuum load switch and combination device, suitable for three-phase AC 50Hz. 10kV distribution system. It has the advantages of no pollution, no fire and explosion hazards, and can be operated frequently. It can be used as the main component of ring main units, box type substations or other types of switchgear, for the control and protection of power equipment such as transformers, cables, overhead lines, etc. It is widely used in power distribution systems such as factories, residential areas, high-rise buildings, schools, parks, etc.

Environmental conditions for use
Altitude not exceeding 1000M;
Environmental temperature: maximum+40 ℃; Minimum -15 ℃;
Relative humidity: daily average not exceeding 95%, monthly average not exceeding 90%;
Environmental conditions: No corrosive gases, flammable gases, obvious water vapor, and no frequent severe vibrations.

Main electrical and mechanical parameters of vacuum load switch and its combination electrical equipment

Table 1 Technical Parameters of Load Switches

serial number	name		unit	data
				load switch	combined electrical apparatus
one	rated voltage		kV	twelve
two	Rated insulation level	Power frequency withstand time, ground/isolation fracture	kV	42/48
		Thunder ground impact requires relative pressure to the ground/isolation fracture	kV	75/85
three	rated current		A	630/800 125
four	Rated active load breaking current, rated closed-loop breaking current		A	630/800 125
five	Rated short-time withstand current (2S)		kA	twenty
six	Rated short-circuit closing current, rated peak withstand current		kV	fifty
seven	Rated cable charging breaking current		A	twenty-five
eight	Rated open circuit no-load transformer		kVA	1600 1600
nine	Rated breaking and handover current		A	- 2000
ten	Rated short-circuit breaking current of fuse		kA	- 31.5
eleven	mechanical life		time	5000 5000
twelve	Total breaking time		Ms	not more than 100
thirteen	Overload breaking capability		A	five thousand

Table 2 Technical Parameters of Load Switches

serial number	name	unit	numerical value	remark
one	Interphase center distance	mm	210±3
two	contact gap	mm	10±1
three	Contact itinerary	mm	3±1
four	Three phase closing asynchrony	ms	<2
five	Three phase closing asynchrony	ms	<2
six	Bouncing time of closing contact	ms	<2
seven	Average closing speed	m/s	0.6±0.2
eight	Average opening speed	m/s	1.0±0.2
nine	Accumulated allowable wear thickness of moving contact	mm	three
ten	Open distance between dynamic and static contacts	mm	>160

FZRN23-12D High Voltage Vacuum Load Switch