Product Center

+
  • Lightning protection bushing (10~35kV/250~315A)（1726228075491）.jpg
  • Lightning protection bushing (10~35kV/250~315A)（1726228075520）.jpg
  • Lightning protection bushing (10~35kV/250~315A)（1726228075549）.jpg
  • Lightning protection bushing (10~35kV/250~315A)（1726228075578）.jpg
  • Lightning protection bushing (10~35kV/250~315A)（1726228075606）.jpg
  • Lightning protection bushing (10~35kV/250~315A)（1726228075979）.jpg

Lightning protection bushing (10~35kV/250~315A)

The transformer sleeve is the main insulating device outside the transformer box. The lead wire of the transformer winding must pass through the insulating sleeve to insulate the lead wire between the lead wire and the lead wire between the transformer shell, and to fix the lead wire at the same time.Due to different voltage levels, the insulation sleeve has pure porcelain sleeves, oil-filled sleeves and capacitive sleeves.Pure porcelain bushing is mostly used for transformers of 10kV and below. It is to wear a conductive copper rod in the porcelain bushing, and the inside of the porcelain bushing is air insulated.The oil-filled bushing is mainly used in the 35kV class transformer. It is oil-filled in the porcelain bushing. A conductive copper pole is worn in the porcelain bushing.Capacitive bushing is composed of main insulating capacitor core, outer insulating upper and lower porcelain parts, connecting sleeve, oil pillow, spring assembly, base, equalizing ball, measuring terminal, wiring terminal, rubber washer, insulating oil, etc.It is used in high voltage transformers above 100kV.

Keywords

Category

Lightning Protection Bushing

Contact us
Leave Message

Product description

 

The lightning protection distance can be calculated as follow:

1. Standard lightning protection distance can be calculated by the lightning impulse withstand voltage as follow. 

V一lightning impulse withstand voltage,unit kV.

C一Standard lightning protection distance,unit mm.

2. Modified lightning protection distance can be calculated by the altitude of the product installed as follow.

H一the altitude of the product installed, unit m.

CH一lightning protection distance at altiude, unit mm.

This method is only used as a preliminary calculation of lightning protection distance, if any standard can be found, please refer to the standard calculation.

 

Lightning protection bushing outline dimensions (10~35kV/250~315A)

 

Sequence Number Code Model Dimensions Opening Arcing distance Creep distance Shield
Page number Serial number H d1 d4 E C d0 h1
1 AM.EDA.004 BJLB-10/315 49 4 305 115 48 115 50～70 65 122 320 3 single umbrella
2 AM.EFA.004 BJLB-20/315 51 4 365 115 48 115 50～120 65 182 380 3 single umbrella
3 AM.EFA.008 BJLB-20/315 51 8 375 115 48 115 50～120 65 192 430 4 single umbrella
4 AM.EFA.016 BJLBW-20/315 51 16 375 115 48 115 50～120 65 192 450 3 big 2 small
5 AM.EFA.020 BJLBW-20/315 53 12 375 135 48 115 50～120 65 192 510 3 big 2 small
6 AM.EFA.024 BJLB-20/315 53 4 505 115 48 115 120～210 70 322 530 4 single umbrella
7 AM.EFA.028 BJLB-20/315 53 18 505 135 48 115 120～210 70 322 810 7 single umbrella
8 AM.EHA.004 BJLB-35/315 55 4 550 175 48 200 170～220 105 328 930 7 single umbrella
9 AM.EHA.006 BJLB-35/250 55 8 756 175 71 200 170～300 105 447 1160 9 single umbrella

 

Note: Other specifications can be customized according to customer needs.

PRE

NONE

NONE

NEXT

PRE

NONE

NET

NONE

Related download

Message

We can recommend suitable products for you according to your needs, please fill in the form below, we will contact you in time!

Submit