Online Exporter Low Tension Toughened Glass Insulator - High Voltage 70kn Disc Suspension Toughened Glass Insulator U70BL – Johnson
Online Exporter Low Tension Toughened Glass Insulator - High Voltage 70kn Disc Suspension Toughened Glass Insulator U70BL – Johnson Detail:
| 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.
Packaging
Product detail pictures:
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We are commitment to offer you the aggressive price tag ,exceptional products and solutions high-quality, as well as fast delivery for Online Exporter Low 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: Greece, Japan, Montpellier, We look forward to hearing from you, whether you are a returning customer or a new one. We hope you will find what you are looking for here, if not, please contact us immediately. We pride ourselves on top notch customer service and response. Thank you for your business and support!
By Jonathan from Netherlands - 2018.12.28 15:18
This company can be well to meet our needs on product quantity and delivery time, so we always choose them when we have procurement requirements.
By David from San Diego - 2017.12.02 14:11
