News
Dry type resin bushing
Time:
2020-11-05 00:00
Source:
1,Dry type resin bushing is suitable for AC frequency 50～60Hz, system nominal voltage 0.4～35kV, single phase rated current 50～5000A, installed on the side wall of the combined transformer.
Use temperature range of bushing: -45～100℃.
2.Description of product model:
The description of Flange dry type bushing model as follows
B --------------------------------- transformer bushing
F --------------------------------- compound insulation
G --------------------------------- Dry-type
P --------------------------------- With ground shield
W --------------------------------- Anti-fouling umbrella shield
(XXX / XXX) -------------------- rated current / nominal voltage of a system
3.Transportation installation considerations
The transformer bushing should be free from serious vibration, bumping and impact during transportation
Before installation, the type and specification shall be confirmed to meet the requirements of the combined transformer, and the surface shall be dried
Handle with care during installation and do not damage outer surface of bushing.
The mounting bolts must be tightened diagonally multiple times during casing installation to prevent resin flange damage.
Notes:
When installing the bushing, all bolts of the flange must be properly tightened, and the compression amount of the sealing ring under the flange and the thermal expansion and contraction margin should be sufficient. Do not over-tighten, otherwise the sealing ring or resin flange may be easily damaged.
After the 35kV bushing is installed, the outer surface of the product needs to be thoroughly cleaned, otherwise it may cause piezoelectric corona discharge.
The bushing is an indoor casing. It is strictly forbidden to use this casing in an outdoor environment.
The bushing with grounding shield can be connected to an electromagnetic lock or a display during installation, to provide signals for subsequent intelligent detection, but the grounding shielding net must be grounded.
4.Technical Parameters
nominal voltage(kV) 1 3 10 35
rated voltage (kV) 1.2 3.6 12 40.5
power frequency withstand voltage (kV) 8 11 30 95
lightning impulse withstand voltage full wave (kV) —— 40 75 200
chopped wave (kV) —— 44 83 220
Partial discharge level 10pC No more than 10pC at rated voltage
The electrical performance meets the requirements of the latest national standard GB/T 4109 and the international standard IEC 60137.
(Hebei Anmei Electrical Equipment Co., LTD)
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