ChinSun is a professional High Voltage Bushing manufacturer from China.
Strict technical standards (IEC 60137) and the shortest delivery time (20days) to win more good customers for ChinSun.
ChinSun® products range is : Dry type RIP bushings, from 12kV 36kV 66kV 72.5kV 126kV 132kV 170kV 220kV 252kV 363kV up to 400kV :Transformer bushing, Wall bushing, Current Transformer, GIS bushing.
Whether you are a transformer manufacturer or a power project or power products importer, send to us your demand specifications, we will offer it's design drawings to you with most valuable feedback.
website: Â www.sdchinsun.com
What is GIS bushing?
In the power system, the outgoing sleeve used in GIS substation, the outdoor part is the porcelain bushing filled with SF6 gas. The leakage of air during operation makes the internal gas pressure drop, resulting in insulation failure and porcelain bushing explosion. In recent years, the use of composite hollow insulator instead of porcelain bushing increased year by year. Although the explosion hazard was avoided, there was still an air leakage problem, which brought a lot of maintenance work of detection machine.
Also due to the GIS for casing indoor SF6 gas performance is affected by pressure, when the environment temperature is very low, gas concentration (below 40 ºC liquefy), depress insulation performance, so in the environment temperature is low, can't use this kind of casing.
ChinSun FGRG reinforced dry GIS outgoing busing uses capacitive uniform pressure structure glass fiber impregnated with epoxy resin to enhance the wrapped solid insulation. There is no SF6 gas in the outdoor part of the bushing and there is no risk of air leakage. There is no need to test and maintain it during operation. Gas at the same time, due to the flanges and then the gas pressure station is mutually, and the plant installed in temperature control indoor, so the gas temperature within the flange is controlled, the casing can be lower than to 40 ºC under the environment of running. This product meets GB/T 4109-2008, IEC60137 ED6.0 version, MOD and other latest standards, and has the following remarkable advantages:
A. This product is a gas-free, pure solid main insulation structure product, so there is no special test and maintenance;
B. The insulation design of the sleeve has a large margin. The semiconductor material is used as the capacitive screen, which greatly increases the starting voltage of the sleeve so that there is no local discharge in operation;
C. flame retardant insulation materials, no decomposition, stable electrical properties, no combustion and explosion hazards;
D. The mechanism is compact, small in size, light in weight, easy to transport, and can be installed at any Angle;
E. glass fiber reinforced winding to optimize mechanical layering design. High bending strength and excellent mechanical performance, especially suitable for use in the severe earthquake area.
F. excellent high and low-temperature resistance, the highest temperature tolerance + 135 ºC, the minimum heat resistance - 200 ºC;
G. The silicone rubber composite coat has excellent antifouling performance and can be used in heavy pollution area;
H. Long service life and low long-term operation cost;
I. the product has a short production cycle and can be specially designed according to user requirements.
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Technical standards | GB/T 4109-2008               IEC 60137 Ed.6.0 | ||||||
Rated voltage | 72.5kV | 126kV | 252kV | ||||
Rated current |  | 630-1250A |  | ||||
1min power frequency dry(wet) voltage withstand | 155kV | 255kV | 550kV | ||||
Full-wave impulse withstand voltage of lighting | 325kV | 550kV | 1050kV | ||||
Operation impulse withstand voltage | 850kV | ||||||
Under 1.05 times of maximum phase voltage tan δ | ≤0.004 | ||||||
Partial discharge under the rated voltage | ≤10pC | ||||||
Bending resistant test load | 2000N | 3150N | 4000N | ||||
The minimum nominal creepage distance | 31mm/kV |
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Dimension -table 1                         |  | FGRG 72.5/630-1250 |
FGRG 72.5/1600-2000 |
FGRG 72.5/2500 |
FGRG 126/630-1250 |
|
Total length | L | 1145 | 1470 | 1470 | 2040 | |
Air side | n1×d1 | 4x18 | 4x18 | 4x18 | 4x18 | |
a1 | 50 | 50 | 50 | 50 | ||
b1×b2 | 100×100 | 100×100 | 100×100 | 100×100 | ||
δ | 14 | 16 | 20 | 14 | ||
L1 | 750 | 750 | 750 | 1150 | ||
D6 | 220 | 220 | 220 | 290 | ||
D7 | 140 | 140 | 140 | 128 | ||
Flange | D4 | 290 | 290 | 290 | 290 | |
D5 | 335 | 335 | 335 | 335 | ||
L4 | 150 | 150 | 150 | 150 | ||
m×d2 | 8×16 | 8×16 | 8×16 | 8×16 | ||
a1 | 45 | 45 | 45 | 45 | ||
SF6Â side | L2 | 330 | 330 | 330 | 520 | |
L3 | 260 | 260 | 260 | 450 | ||
D | 120 | 120 | 120 | 148 | ||
D1 | 99 | 99 | 99 | 99 | ||
D2 | 128 | 128 | 128 | 128 | ||
D3 | 70 | 70 | 70 | 70 | ||
Casing weight | kg | 50 | 64 | 66 | 90 |
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Dimension -table 2                         |  | FGRG 126/1600-2000 |
FGRG 126/2500 |
FGRG 252/630-1250 |
FGRG 252/1600-2000 |
FGRG 252/2500 |
|
Total length | L | 2060 | 2060 | 3420 | 3420 | 3420 | |
Air side | n1×d1 | 4x18 | 4x18 | 4x18 | 4x18 | 4x18 | |
a1 | 50 | 50 | 50 | 50 | 50 | ||
b1×b2 | 100×100 | 100×100 | 100×100 | 100×100 | 100×100 | ||
δ | 16 | 20 | 14 | 16 | 20 | ||
L1 | 1150 | 1150 | 2240 | 2240 | 2240 | ||
D6 | 290 | 290 | 435 | 435 | 435 | ||
D7 | 128 | 128 | 325 | 325 | 325 | ||
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