Factory wholesale High Tension Toughened Glass Insulator - High Voltage 70kn Disc Suspension Toughened Glass Insulator U70BL – Johnson
Factory wholesale High Tension Toughened Glass Insulator - High Voltage 70kn Disc Suspension Toughened Glass Insulator U70BL – Johnson Detail:
Product Design Drawings
Product Technical Parameters
| IEC designation | U70B/146 | U70B/127 | |
| Diameter D | mm | 255 | 255 |
| Height H | mm | 146 | 127 |
| Creepage distance L | mm | 320 | 320 |
| Socket coupling | mm | 16 | 16 |
| Mechanical failing load | kn | 70 | 70 |
| Mechanical routine test | kn | 35 | 35 |
| Wet power frequency withstand voltage | kv | 40 | 40 |
| Dry lightning impulse withstand voltage | kv | 100 | 100 |
| Impulse puncture voltage | P.U | 2.8 | 2.8 |
| Power frequency puncture voltage | kv | 130 | 130 |
| Radio influence voltage | μv | 50 | 50 |
| Corona visual test | kv | 18/22 | 18/22 |
| Power frequency electric arc voltage | ka | 0.12s/20kA | 0.12s/20kA |
| Net weight per unit | kg | 3.6 | 3.5 |
Installation and maintenance
3 Installation
3.1 Appearance Check
The insulators shall be inspected one by one according to chapter 28 of GB/ T1001.1-2003 and this standard before installation, and the use of insulators that do not meet the above requirements shall be prohibited.
3.2 Insulator resistance measurement
Insulation resistance of porcelain insulators shall be measured one by one before installation. Insulators that do not meet the requirements of DLT626 shall not be used.
3.3 Precautions
During installation, insulators should be handled with care, not thrown, and avoid collision and friction with sharp objects.
4 Operation and Maintenance
4.1 document
The operating unit shall establish insulator files in accordance with DL/T 626.
4.2 maintenance
During inspection and inspection of insulators, if it is found that the lock pin is missing or the insulator has zero value, live operation or power failure repair shall be adopted, and the insulators shall be inspected in time according to the following provisions.
If one of the following conditions occurs, the insulator can be determined to be invalid. A) Cracks and yellow rust spots appear on the iron cap (acid reflux); B) Bending and cracking of steel feet; C) Severe arc burning of iron cap and steel foot;
D) iron cap, insulation and steel foot are not on the same axis: e) porcelain cracks occur;
F) Insulation parts are seriously burned by partial discharge and partial shedding occurs; G) Cracks or skew appear in the cement at the steel foot;
H) Corrosion of steel feet occurs as described in DLT626-2005.
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Packaging
Product detail pictures:
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We normally follow the basic principle "Quality Initial, Prestige Supreme". We've been fully committed to offering our consumers with competitively priced good quality merchandise, prompt delivery and professional support for Factory wholesale High Tension Toughened Glass Insulator - High Voltage 70kn Disc Suspension Toughened Glass Insulator U70BL – Johnson, The product will supply to all over the world, such as: USA, United Kingdom, French, We're your reliable partner in the international markets of our products and solutions. We focus on providing service for our clients as a key element in strengthening our long-term relationships. The continual availability of high grade solutions in combination with our excellent pre- and after-sales service ensures strong competitiveness in an increasingly globalized market. We're willing to cooperate with business friends from at home and abroad, to create a great future. Welcome to Visit our factory. Looking forward to have win-win cooperation with you.
By Bertha from Vietnam - 2018.11.22 12:28
We are a small company that has just started, but we get the company leader's attention and gave us a lot of help. Hope we can make progress together!
By Beatrice from azerbaijan - 2017.10.25 15:53
