Product categories

Composite capacitive wall bushing with CT

Standard: IEC60137, GB/T4109.
Rated voltage：12kV-0.5kV
Rated current：10A-8000A
Temperature: -50 ℃ to +55℃
Altitude: 1000m（conferring with consumer if above 1000m）
Pollution class：Ⅲ for indoor, Ⅳ for outdoor.

Описание

drawing-of-separated-wall-bushing-with-CT

integrated wall bushing with CT

Parameters

Standard: IEC60137, GB/T4109.
Rated voltage：12kV-0.5kV
Rated current：10A-8000A
Temperature: -50 ℃ to +55℃
Altitude: 1000m（conferring with consumer if above 1000m）
Pollution class：Ⅲ for indoor, Ⅳ for outdoor.

Highest voltage (Um) (kV)	Rated Voltage (Ur) (kV)	Power frequency withstand voltage (kV)		BIL(kV)	pC	Tanδ (%)	Ith(kA)
Highest voltage (Um) (kV)	Rated Voltage (Ur) (kV)	dry	wet	BIL(kV)	pC	Tanδ (%)	Ith(kA)
12	10	28	28	75	≤5	≤0.3	25Ir
24	20	50	50	125	≤5	≤0.3	25Ir
40.5	35	95	80	200	≤5	≤0.3	25Ir
72.5	66	160(140)	140	350(325)	≤5	≤0.3	25Ir
126	110	230(185)	230(185)	550(450)	≤5	≤0.3	25Ir
252	220	460(395)	460(395)	1050(950)	≤5	≤0.3	25Ir

Current value and bending failure load，

Installation

There are two installation methods for bushings on walls or tank shells: forward installation and reverse installation. The copper conductor wall bushing has both methods, which often easily make mistakes during operation, resulting in a shortened discharge distance and affecting bushing performance. The aluminum conductor and busbar wall bushing have unified reverse installation, which effectively utilizes the height of the porcelain bushing and reduces the size of the bushing.

40.5kV-wall-bushing-with-CT-integrated-2