The use principle of Varistor is that after it is connected to the protected equipment, it cannot affect the normal operation of the equipment, and can effectively implement instantaneous overvoltage protection for the equipment. Therefore, in addition to the technical parameters of Varistor, the following issues should be considered in the actual selection:

(1) Selection of voltage sensitivity
Considering the deviation between the actual Varistor voltage and the nominal voltage (1.1~1.2 times of the nominal voltage should be considered), the possible fluctuation range of the power supply voltage in the AC circuit (1.4~1.5 times of the rated voltage should be considered), and the relationship between the peak value of the AC voltage and the effective value (1.4 times should be considered), the Varistor with a voltage sensitive of 2.2~2.5 times of the rated voltage should be selected. In DC circuits, Varistor with a voltage sensitive of 1.8~2 times the rated value of DC voltage are often selected.

⑵ Selection of flow capacity
In principle, the selection should be based on the maximum transient surge current that may be experienced, but achieving this is difficult. In practice, the selection of Varistor is based on the use occasion or the test grade specified in the product test standard.

According to the former, 1kA (8/20 μ S current wave) can be used for the protection of silicon controlled rectifier; 3kA is used for surge absorption in electrical equipment; 5kA is used for overvoltage absorption of lightning strikes and electronic equipment; 10kA is used for protection against lightning strikes. According to the latter, the commonly used composite wave (1.2/50 generated when the generator is open circuit output) μ Voltage wave of s; 8/20 generated during short-circuit output μ Current wave of s; The internal resistance of the generator is 2 Ω to assess the equipment's ability to withstand lightning surge interference online. During the 4kV test, the maximum current absorbed by the protector can reach 2kA; For the 6kV test, the maximum absorbed current is 3kA. However, in actual selection, the flow capacity of the selected Varistor should also be appropriately increased. Because Varistor with large current passing capacity should have relatively small residual voltage drop when absorbing surge current of the same size; At the same time, there is also a large protection margin for the selected Varistor.

⑶ Inherent parasitic capacitance
Varistor has an inherent capacitance problem. Its value ranges from hundreds to thousands of pF according to the difference of external dimensions and nominal voltage. The inherent capacitance of Varistor determines that it is not suitable for use in high-frequency occasions, or it will affect the normal operation of the system; Suitable for use in power frequency systems, such as for protection of power incoming lines, protection of thyristor rectifiers, etc.

The instantaneous power of Varistor is relatively large, but the average continuous power is very small, so it cannot work in the conduction state for a long time.https://www.kingtronics.com/Metal-Oxide-Varistor/XKT-Metal-Oxide-Varistor.html 

Kingtronics Kt 05D to 20D Metal Oxide Varistor Features
Operating Temperature Range: -40℃~+105℃
Body Diameters Range From 5D to 20D
Wide Operating Voltage from 18V to 1800V
Full compliance with RoHS and REACH

Kingtronics Kt 05D to 20D Metal Oxide Varistor Applications
Industrial equipment
Home appliance
Industrial equipment
Lighting products
Telecommunication or telephone system

Kingtronics Precautions for use of Metal Oxide Varistors

Metal Oxide Varistor (XKT series) is Kingtronics strong production line.

We offers Metal Oxide Varistor (MOV) from 05D to 20D with high quality at incredibly aggressive prices.
¬Product video: https://youtu.be/JlZ5yg4GsBU

Features:
Operating Temperature Range: -40℃~+105℃ 
¬Body Diameters Range From 5D to 20D
¬Wide Operating Voltage from 18V to 1800V
¬Full compliance with RoHS and REACH 

Applications:
¬Industrial equipment,
¬Home appliance,
¬Industrial equipment,
¬Lighting products,
¬Telecommunication or telephone system
¬Any many other

Contact us with you inquiry today!

Kingtronics would like to share our another strong production line: XKT Metal Oxide Varistors.
Radial leaded varistor devices be use in electrical surge protectors which protect against overvoltage transients. it can protect rectification diodes, SCRs, power transistors, semiconductor devices, etc.
High Quality with excellent price and lead time support, welcome your inquiry. 
Product datasheet: https://www.kingtronics.com/pdf/XKT-Metal-Oxide-Varistor.pdf
Kingtronics Kt 05D to 20D Metal Oxide Varistor product video: https://www.youtube.com/watch?v=JlZ5yg4GsBU

•       Operating Temperature Range: -40℃~+105℃
•       Body Diameters Range From 5D to 20D
•       Wide Operating Voltage from 18V to 1800V
•       Full compliance with RoSH and REACH

Applications: Industrial equipment, Home appliance, Industrial equipment, Lighting products, Telecommunication or telephone system

Kingtronics XKT Series 05D to 20D Metal Oxide Varistor (MOV)

Metal oxide Varistors ( MOV, Metal Oxide Varistor ) are voltage dependent resistors with symmetrical voltage-current characteristics which are designed to protect all kinds of electronic devices or elements from switching pulse or induced lightening surges. Its non linear characteristic with broad application range, mass production feasibility are gradually being used in various level of electric and electronic device from low to high voltages level protections ( AC11V- 1000 V as available ranges ).

Kingtronics offers high quality XKT 05D to 20D Metal Oxide Varistor at incredibly aggressive prices, following are our product data, welcome your inquiry!

Product datasheethttps://www.kingtronics.com/pdf/XKT-Metal-Oxide-Varistor.pdf

**Features
Operating Temperature Range: -40℃~+105℃
Body Diameters Range From 5D to 20D
Wide Operating Voltage from 18V to 1800V
Full compliance with RoSH and REACH

**Applications:
Industrial equipment
Home appliance
Industrial equipment
Lighting products
Telecommunication or telephone system

 Kingtronics XKT Series 05D to 20D Metal Oxide Varistor (MOV)

Mid-Autumn Festival, also known Moon festival, falls on different date each year, according to the Chinese lunar year calendar.
Kingtronics will have a short holiday on both 24th of Sept and 25th.

The convention may differs between each countries, or even regions.
However, in general, people gather together with family and friends during the festival, to appreciate the bight moon.
Meanwhile, barbecue, eat moon cakes, and pomelos are part of the tradition. 

Do you celebrate your moon festival in an unique way?
Since we will have days off by the end of September, also there are some national holidays fall in the first and second of October.

Please do not hesitate to share your orders with us earlier, we can proceed your production right away.

05D to 20D Metal Oxide Varistors (XKT):

Features
• Operating Temperature Range: -40℃~+105℃
• Body Diameters Range From 5D to 20D
• Wide Operating Voltage from 18V to 1800V
• Full compliance with RoHS and REACH

E-mail us: info@kingtronics.com
Skype: kingtronics.sales

A metal oxide varistor(MOV) XKT20D is a device used as a component in electrical equipment. The device will conduct low amounts of electric current very well, but will stop conducting when the current reaches high voltage levels. This property of the metal oxide varistor makes it ideal for use in electrical surge protectors.
Varistor Voltages: 18 V- 1800 V
Maximum Allowable Voltage(ACrms): 11 V- 1100 V
Nominal Varistor Voltage: 101K- 911K
Standard Size: 24x26.5mm
Operating temperature range: -40℃~+105℃
Full compliance with RoHS and REACH
It is our commitment to offer our customers the best quality products with fast delivery and the best after sales services. Welcome send to me your RFQ, let me quote and prepare samples for you to approve.

Each years, Kingtronics will be investing funds in research and development of new products. XKT14D is one of important products of this quarter. Application for surge protection in consumer electronic equipment, surge protection in communication, measuring, or controller electronics and relay or electromagnetic valve surge absorption.
Varistor Voltages: 18 V- 1800 V
Maximum Allowable Voltage(ACrms): 11 V- 1100 V
Nominal Varistor Voltage: 101K- 911K
Standard Size: 17.5x20mm
Operating temperature range: -40℃~+105℃
Full compliance with RoHS and REACH
From the quality, we can say our XKT14D can confidently compete with oversea famous brands without a shame. From the price, you will be very much satisfied with them, please send your inquiry to us now.

A more recent innovation to the Kingtronics product line, XKT10D has high current handling, high energy absorption capability and fast response times to protect against transient faults up to rated limits.
Varistor Voltages: 18 V- 1100 V
Maximum Allowable Voltage(ACrms): 11 V- 680V
Nominal Varistor Voltage: 101K- 911K
Standard Size: 13.5x16mm
Operating temperature range: -40℃~+105℃
Full compliance with RoHS and REACH
As Christmas is coming, Kingtronics prepares discounts and deals for Christmas, business hot at this moment! Off course, we offer much more better prices for XKT10D, welcome send your request and ask for detail prices.

Are you looking for new suppliers for varistor ? Kingtronics will be the satisfying choice.

Below some features and application information for varistor for your reference.

Please contact us without and hesitation !

Kingtronics Kt 05D to 20D Metal Oxide Varistor Features

     • Operating Temperature Range: -40℃~+105℃
     • Body Diameters Range From 5D to 20D
     • Wide Operating Voltage from 18V to 1800V
     • Full compliance with RoSH and REACH

Kingtronics Kt 05D to 20D Metal Oxide Varistor Applications

     • Industrial equipment
     • Home appliance
     • Industrial equipment
     • Lighting products
     • Telecommunication or telephone system

Contact us

Tel: (86) 769 8118 8110
Tel: (852) 8106 7033
Fax: (852) 8106 7099
E-mail: info@kingtronics.com
Skype: kingtronics.sales
MSN: kingtronics-sales@hotmail.com
Web: www.Kingtronics.com
YouTube: www.youtube.com/c/Kingtronicskt

About

Kingtronics International Company was established in 1995 located in Dongguan City of China to handle all sales & marketing for factories located in Chengdu, Sichuan and Zhaoqing, Guangdong, China. In 1990, we established the first factory to produce trimming potentiometer and in 1999 we built up new factory in Zhao Qing, Guangdong. Now with around 850 workers, Kingtronics produce trimming potentiometers, dipped tantalum capacitors, multilayer ceramic capacitors, and diode & bridge rectifier. We sell good quality under our brand Kingtronics, and Kt, King, Kingtronics are our three trademarks. All our products are RoHS compliant, and our bridge rectifier have UL approval. Please visit our Products page, you could please download all our PDF datasheet and find cross reference for our Trimming Potentiometer and capacitors.

Tantalum and Ceramic Capacitors Cross Reference ↓ Download
Diodes & Rectifiers List(PDF: 97KB) ↓ Download
Trimming Potentiometer Cross Reference ↓Download

Archives

Calendar

<< 2024-6 >>

Sun

Mon

Tue

Wed

Thu

Fri

Sat

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30