Hangzhou Yongde Electric Appliances Co.,Ltd
| Payment Terms | T/T or western Union or L/C or PayPal, MoneyGram, D/P, D/A |
| Supply Ability | 30,000pcs per month |
| Delivery Time | 20 working days after received your payment |
| Packaging Details | carton |
| genre | Metal Oxide Varistor |
| Use | For Surge Arrester |
| Function | Protection |
| Diameter | 28mm |
| Color | Silvery gey |
| quality | high |
| Brand Name | YONGDE |
| Model Number | D28 |
| Certification | ISO9001/KEMA |
| Place of Origin | Zhejiang,China(Mainland) |
View Detail Information
Explore similar products
85mm Zinc Oxide Mov Surge Protector Metal Oxide Varistor Resistor Disc
Radial Leaded Lightning Arrester Varistor Metal Voltage Dependent Resistor D72
Zinc Oxide Varistor VDR D35 for Transient Voltage Protection
High Through Flow Voltage Dependent Resistors Metal Oxide Varistor Disc D52
Product Specification
| Payment Terms | T/T or western Union or L/C or PayPal, MoneyGram, D/P, D/A | Supply Ability | 30,000pcs per month |
| Delivery Time | 20 working days after received your payment | Packaging Details | carton |
| genre | Metal Oxide Varistor | Use | For Surge Arrester |
| Function | Protection | Diameter | 28mm |
| Color | Silvery gey | quality | high |
| Brand Name | YONGDE | Model Number | D28 |
| Certification | ISO9001/KEMA | Place of Origin | Zhejiang,China(Mainland) |
| High Light | zinc oxide varistor ，MOV metal oxide varistor | ||
MOA Metal Zinc Oxide Varistor Resistor Disc With KEMA For Surge Arrester
Introduction:
A varistor remains non-conductive as a shunt-mode device during normal operation when the voltage across it remains well below its "clamping voltage", thus varistors are typically used for suppressing line voltage surges. However, a varistor may not be able to successfully limit a very large surge from an event like a lightningstrike where the energy involved is many orders of magnitude greater than it can handle. Follow-through current resulting from a strike may generate excessive current that completely destroys the varistor. Lesser surges still degrade it, however. Degradation is defined by manufacturer's life-expectancy charts that relate current, time and number of transient pulses. The main parameter affecting varistor life expectancy is its energy (Joule) rating. As the energy rating increases, its life expectancy typically increases exponentially, the number of transient pulses that it can accommodate increases and the "clamping voltage" it provides during each transient decreases. The probability of catastrophic failure can be reduced by increasing the rating, either by using a single varistor of higher rating or by connecting more devices in parallel. A varistor is typically deemed to be fully degraded when its "clamping voltage" has changed by 10%. In this condition it is not visibly damaged and it remains functional (no catastrophic failure).
Specifications:
D28 Metal Oxide Varistor(MOV):
| Type | D28 Metal Oxide Varistor(MOV) |
| Specification mm | D28*24 |
| Voltage Gradient V/mm | 210~235 |
| Square Wave Test Valve | 200 |
| 4/20μ S High Current Withstand kA | 65 |
| 8/20μ S high current withstand kA | 10 |
| DC1mA Refering Voltage kV | 5.3 |
| 0.75Times U1mA Leak current μ A < | 10 |
| Residual Votage Ratio | 1.88 |
| Aging Load Point Ratio% | 85 |
About us:
Yongde holds the quality policy of being 'the technical forerunner, supreme in quality, supremacy of customers, and innovative progressing', so that our products and services successfully satisfied our users. We warmly welcome friends and customers from home and abroad to contact for exchanges and corporations. We also welcome feedbacks from our user communities.
Company Details
Business Type:
Manufacturer
Year Established:
1993
Total Annual:
$17,364,156-$20,744,408
Employee Number:
100~250
Ecer Certification：
Verified Supplier
Hangzhou Yongde Electric Appliances Co.,Ltd was founded in 1993. As a high-new-tech enterprise in Zhejiang province, it is about 15 kilometers from downtown area. Our Company is one of the recommended model companies for national power grid construction and transformation. We specialize... Hangzhou Yongde Electric Appliances Co.,Ltd was founded in 1993. As a high-new-tech enterprise in Zhejiang province, it is about 15 kilometers from downtown area. Our Company is one of the recommended model companies for national power grid construction and transformation. We specialize...
Get in touch with us
Leave a Message, we will call you back quickly!