FZ series valve type lightning arresterDetailed product description：

Application of FZ series valve type lightning arrester:

The FZ series 3-110kV valve type lightning arrester is a protective electrical device used to protect the insulation of AC substation equipment from atmospheric overvoltage damage.
This applies to:
1. Indoor and outdoor: The ambient temperature of the usage location is -40 ℃ to+40 ℃;
2. The altitude of the usage location shall not exceed 1000m;
3. The maximum relative frequency voltage that may occur at the installation site should not exceed the rated voltage of the lightning arrester.
It is not suitable for places with severe pollution and violent vibrations.  
Structure and performance:
The FZ series lightning arrester consists of three parts: top cover, basic components, and insulation base. In addition to the above three parts, the 110kV lightning arrester is also equipped with a voltage equalization ring. The basic components are sealed and equipped with spark gaps, valve plates, and pressure equalization resistors. A 35~110kV lightning arrester is composed of three standard basic components with voltages of 15, 20, and 30kV, as well as two other non-standard basic components with voltages of 15 and 30kV. The FZ series lightning arrester has two types of bases, and products with different voltage levels require bases of different heights.
1. The lightning arrester is connected between the high-voltage wire and the ground. When atmospheric overvoltage occurs on the wire that poses a threat to the substation equipment, the spark gap will activate. Due to the action of the spark gap and valve plate, the amplitude of the overvoltage on the protected equipment is limited, the insulation of the equipment is protected, and the power frequency continuous current is cut off within 0.01 seconds, restoring the system to its political working state.
(1) Conductance current measurement: Apply a direct current voltage (with a fluctuation of no more than ± 1.5%) specified in the characteristic table to both ends of the basic component, and the conductivity current flowing through the basic component should comply with the specifications in the characteristic table.
(2) Insulation resistance test: Use a 2.5kV megohmmeter to measure the insulation resistance of basic components, and the resistance value is not specified. But the results of each experiment should be similar.
2. During transportation and storage, it should be placed upright.
3. During operation, the original paint layer of the lightning arrester should be repainted every 1-2 years.
4. During installation, the horizontal tension of the top lead of lightning arresters with a voltage range of 3-60kV should not exceed 294N (30kgf), and for 110kV lightning arresters, it should not exceed 196N (20kgf).
5. FZ-110 lightning arrester is used to protect 110kV AC transformer equipment with neutral point not grounded or grounded through arc suppression coil from damage caused by atmospheric overvoltage. A basic section of 15kV non-standard components (with different characteristics from 15kV standard components) is installed at the top, while the remaining four sections are composed of 30kV non-standard components (with different characteristics from 30kV standard components).

Model or series	Base height H (mm)
FZ series 3-60kV	one hundred and sixty-seven
FZ-110 type	two hundred and thirty-one

model

FZ-3

FZ-6

FZ-10

FZ-15

FZ-20

FZ-30

FZ-36

FZ3-35

FZ-40

FZ-60

FZ-110J

FZ-110

total height H(mm)

five hundred and fifteen

five hundred and sixty

six hundred and ninety

eight hundred and sixty

nine hundred and eighty

one thousand and twenty

one thousand and five hundred

one thousand three hundred and three

one thousand seven hundred and forty

two thousand three hundred and eighty

three thousand four hundred and eighty

four thousand one hundred and twenty

weight (kg)

forty-five point eight seven

forty-eight point eight four

fifty-five point three zero

sixty-four point six nine

seventy point five one

seventy-two point two zero

one hundred and twelve point zero seven

ninety-two point five zero

one hundred and twenty-three point eight nine

one hundred and seventy-one point two seven

two hundred and fifty-seven point eight zero

three hundred and six point five two

FZ series valve type lightning arrester