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Help CenterWenzhou Yika Zinc Oxide Disc for 20-35KV Arrester
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The Zinc Oxide Disc is the core of the arrester, whose main components is zinc oxide and with a small quantity of bismuth oxide, fluoride oxide, manganous carbonate, antimony oxide and other gleam of additive and made with high temperature.
Metal Oxide Varistor's microstructure mainly constitute of zinc oxide grain, grain boundary layer and chienshih phase, and its electric conduction principle lies that zinc oxide grain has good electro conductiility, and the voltage to the zinc oxide is almost act on high resistant grain boundary layer. Varistor's nonlinearity mainly comes from grain boundary layer ( the main ingredient is bismuth oxide) Chienshih phase scattered throughout the grain boundary layer which is the multiple oxide of zinc oxide and bismuth oxide. Its function lies in restraining the growing of zinc oxide grain to make the better nonlinearity.
| Common Metal Oxide resistor of 20-35kv arrester | |||||||||
| Type | dimension(mm) | D.C. U1mA Voltage |
Leakage current 0.75U1mA | Residual voltage ratio U5KA/U1mA | Current Impulse withstand (A) | Non-linear ocefficient 10μA-1mA | Aging test 115℃, 1000h | ||
| diameter | height | (KV) | (μA) | Rectangular 2ms | high current 4/10μS | ||||
| D4-1 | 38±1 | 24±0.5 | 4.8-5.5 | 10 | 1.75 | 200 | ≥80 | 20 | Chargeability 85% |
| D4-2 | 42±1 | 24±0.5 | 4.8-5.5 | 10 | 1.71 | 250 | ≥85 | 20 | |
| D5-1 | 48±1 | 24±0.5 | 4.6-5.3 | 15 | 1.68 | 400 | 100 | 19 | |
| D5-2 | 52±1 | 24±0.5 | 4.6-5.3 | 15 | 1.63 | 450 | 100 | 18 | |
- 1. Professional Manufacturer
- 2. Standards: ANSI, IEC, BS, DIN
- 3. A wide range of low and high voltage electrical products:
Fuse Cutout |
Lightning Arrester |
Composite Insulator |
Glass Insulator |
Porcelain Insulator |
Epoxy Insulator |
Fuses |
Disconnector Switch |
Circuit Breaker |
Ring Main Unit |
Insulated Sheath |
Terminals |
4. Factory Direct Price
5. Enough ability to meet buyers fresh designed items.
1. Payment : Irrevocable L/C at sight or TT
2. Delivery time and method: Usually within 30 days
3. Port of loading: NINGBO, SHANGHAI, FUZHOU (CHINA)
4. MOQ: 100PCS
5. Package: Standard export packing or as per your requirement.
OEM/ODM can be acceptable by us. We will open a mould as per your sample.
If you discovers defects in workmanship and /or material and so notifies us promptly in writing. we shall with all reasonable speed remedy such defects of non-conformance to the specifications at our expense by replacement at the option of you.
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