FZW□-40.5 Type Outdoor Vacuum Isolation Load SwitchDetailed product description：

FZW □ -40.5 outdoor high-voltage vacuum isolation load switch (hereinafter referred to as load switch) is an outdoor high-voltage switchgear equipment with three-phase AC 50Hz and rated voltage of 40.5kV. It is suitable for breaking and closing the load current of urban or rural distribution systems and the transfer current of fuses. When equipped with a motor mechanism and controller, it can be used as a line section switch or automatic disconnector. Due to the adoption of a new insulation structure design and vacuum arc extinguishing chamber, the load switch has a visible fracture after opening, which also functions as an isolation switch. In addition, it has a large opening capacity, no oil, and therefore has the characteristics of no pollution to the environment, no explosion hazard, long electrical life, and maintenance free.

1、 Overview
FZW□-40.5/The D-20 outdoor high-voltage vacuum isolation load switch (hereinafter referred to as the load switch) is an outdoor high-voltage switchgear equipment with three-phase AC 50Hz and rated voltage of 40.5kV. It is suitable for breaking and closing the load current of urban or rural distribution systems and the transfer current of fuses. When equipped with an electric motor mechanism and controller, it can be used as a line section switch or automatic disconnector. Due to the adoption of a new insulation structure design and vacuum arc extinguishing chamber, the load switch has a visible fracture after opening, which also functions as an isolation switch. In addition, it has a large opening capacity, no oil, and therefore has the characteristics of no pollution to the environment, no explosion hazard, long electrical life, and maintenance free.

2、 Main technical parameters of FZW □ -40.5 outdoor vacuum isolation load switch

serial number	name	unit	parameter value
one	rated voltage	KV	forty point five
two	rated current	A	630, 1250
three	Rated arc extinguishing chamber fracture (before and after electrical life)	KV	seventy
four	Alternating and relative (dry test)	KV	ninety-five
five	Phase to phase, relative to ground (wet test)	KV	eighty-five
six	Isolation fracture (dry test)	KV	one hundred and ten
seven	Isolation fracture (wet test)	kV	ninety-five
	Lightning impulse withstand voltage
eight	Alternating and relative to each other	KV	one hundred and eighty-five
nine	isolation gap	KV	two hundred and fifteen
ten	Rated short-circuit closing current (peak)	KV	fifty
eleven	Rated stable current (peak value)	KV	fifty
twelve	4-second thermal stability current (effective value)	KV	twenty
thirteen	Rated cable charging breaking current	A	ten
fourteen	mechanical life	time	ten thousand
fifteen	Total weight	KG	three hundred