FJPE Shielding Corona Ring

Classification:Protection Fittings

Inside Road & Administration Industry & Trading Garden,Houshan Industry Area,Fuzhou City,Fujian Province

0591-22806687 0591-22806697

0591-22806667

bs@china-grid.com.cn

Overview
Description:

A corona ring, also called an anti-corona ring, is a toroid of conductive material, usually metal, which is attached to a terminal of high voltage equipment. The role of the corona ring is to distribute the electric field gradient and lower its maximum values below the corona threshold, preventing corona discharge. Corona rings are used on very high voltage power transmission insulators and switchgear, and on scientific research apparatus that generates high voltages.

Corona discharge is an ionization of air adjacent to high voltage conductors. It is sometimes visible as a dim blue glow in the air next to high voltage equipment. The high electric field ionizes the air, allowing current to leak from the conductor into the air. In electric power transmission lines and equipment, corona results in an economically significant waste of power. In devices such as electrostatic generators, marx generators, and television sets, the current load caused by corona leakage can reduce the voltage produced by the device, causing it to malfunction. Coronas also produce noxious and corrosive ozone gas, which can cause aging and embrittlement of nearby structures such as insulators, and create a health hazard for workers and local residents. For these reasons corona discharge is considered undesirable in most electrical equipment.

Type Dimension (mm) Weight (kg)
L L1 D S H Φ
FJPE-50/1800/300 1800 900 18 60 300 50 9.5
FJPE-50/1800/325 1800 900 18 60 325 50 9.5
FJPE-50/1800/350 1800 900 18 60 350 50 9.5
FJPE-50/1800/375 1800 900 18 60 375 50 9.5
FJPE-50/1900/300 1900 900 18 60 300 50 9.5
FJPE-50/1900/325 1900 900 18 60 325 50 9.5
FJPE-50/1900/350 1900 900 18 60 350 50 9.5
FJPE-50/1900/375 1900 900 18 60 375 50 9.5
Type Dimension (mm) Weight (kg)
L L1 H D Φ a b
JPL-500N 1450 900 330 50 18 60 60 9.3
FJP-500ND 1670 900 405 50 18 60 60 10.5
FJP-500N/GH 1450 920 330 60 18 60 60 11.3
FP-500N/GH 1450 900 330 60 18 60 60 10.7

Note:The main body is aluminum, and the rest are hot-dip galvanized steel parts.

Type Dimension (mm) Weight (kg)
L L1 L2 H D Φ C a
PLJ-500K 700 600 250 235 50 18 20 60 3.9
PLJ-500X 700 600 270 235 50 18 20 60 4.4
PPLJ-500K 700 600 270 235 50 18 20 60 4.6

Note:The main body is aluminum, and the rest are hot-dip galvanized steel parts.

Type Dimension (mm) Weight (kg)
L L1 H D M C a
FJP-500XDA 800 700 320 50 16 20 80 6.2
JL-500XD 700 600 290 50 16 20 80 4.33
FJP-500XD1L 700 600 270 50 12 20 45 4.2
FJ-500XD/GH 700 600 290 60 12 20 80 9.85

Note:The main body is aluminum, and the rest are hot-dip galvanized steel parts.

Contact Us
0591-22806687 0591-22806697
0086-13950298099
0591-22806667
Inside Road & Administration Industry & Trading
      Garden,Houshan Industry Area,Fuzhou City,Fujian Province
Sampras@china-grid.com.cn
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