FZN16A-12 series vacuum load switchDetailed product description：

The FZN16A-12 series indoor AC high-voltage load switch fuse combination device meets the international and national standards of GB3804-90 "3-63kV AC voltage load switch" and IEC420 "AC high-voltage load switch fuse combination device" in terms of performance.

The FZN16A-12 series indoor high-voltage vacuum load switch is suitable for use in 6-10kV three-phase AC 50Hz power grids as a means of breaking load currents and closing short-circuit currents; Especially suitable for places that require oil-free, non maintenance, and frequent operation.

This product has an independent isolation fracture surface; The manual operation force is small, and it can be equipped with two types of vacuum arc extinguishing chambers: ceramic tube or glass tube. It is an ideal product for oil-free high-voltage switches and equipment upgrades.


Technical parameters of FZN16A-12 series vacuum load switch load switch:

serial number	Name	Unit	Parameters
one	rated voltage	kV	twelve
two	rated current	A	six hundred and thirty
three	Rated Active load breaking current	A	six hundred and thirty
four	Rated closed-loop breaking current	A	six hundred and thirty
five	5% rated active load breaking current	A	thirty-one point five
six	Rated cable charging breaking current	A	ten
seven	Breaking current of rated no-load transformer	A	1250KVA transformer air cut current
eight	1-minute power frequency withstand voltage (effective value) To the ground, alternating	kV	42/48
nine	Full wave lightning impulse withstand voltage (peak value) To the ground, alternating	kV	75/85
ten	Rated peak withstand current	kA	fifty
eleven	Rated short-time withstand current	kA/S	20/3
twelve	Rated short-circuit closing current	kA	fifty
thirteen	Rated current breaking times	time	ten thousand
fourteen	mechanical life	time	ten thousand
fifteen	Allowable cumulative thickness of contact wear	mm	three
sixteen	Interphase center distance	mm	two hundred and ten
seventeen	Manual operation for distance	N.M	＜100
eighteen	Dimensions: Width X Height X Depth	mm	700×800×300

Technical parameters for assembly and adjustment of vacuum arc extinguishing chamber of FZN16A-12 series vacuum load switch:

serial number	Name	Unit	Parameters
one	contact gap	mm	8+1
two	Contact itinerary	mm	3+1
three	Average closing speed	m/s	0.6±0.2
four	Average opening speed	m/s	1±0.2
five	Non synchronous opening and closing of three-phase contacts	ms	≤2
six	Contact closing bounce time	ms	≤2
seven	Distance between charged bodies and relative ground	mm	≥125
eight	Main circuit resistance between upper and lower brackets	μ Ω	≤60