China New Product Lt Glass Insulator - High Voltage 70kn Disc Suspension Toughened Glass Insulator U70BL – Johnson
China New Product Lt 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.
Pictures from the Internet
Packaging
Product detail pictures:
Related Product Guide:
Our commission is always to provide our customers and clientele with best quality and aggressive portable digital products for China New Product Lt Glass Insulator - High Voltage 70kn Disc Suspension Toughened Glass Insulator U70BL – Johnson, The product will supply to all over the world, such as: Albania, Georgia, Ireland, Our company sets up several departments, including production department, sales department, quality control department and sevice center,etc. only for accomplish the good-quality product to meet customer's demand, all of our products have been strictly inspected before shipment. We always think about the question on the side of the customers,because you win,we win!
By Annabelle from Amsterdam - 2018.12.28 15:18
The factory technical staff not only have high level of technology, their English level is also very good, this is a great help to technology communication.
By Amy from Dubai - 2017.08.28 16:02
