1. Post izolatori meet or exceed relevantno nacionalno i međunarodno standardi.
The post izolatori are in compliance with GB8287.1 "Tehnički Uvjeti for High Voltaže porculan porculan porculan izolatori" i GB12744, "Zagađenje otporan Vanjski Rod porculan porculan porculan izolatori", i also comply with the international standard IEC168 "Indoor and Tests for Outdoor Porculan or Glass Post Izolatori" i IEC Publication 815 "Guidelines for the The Selection of Inzolator Under Contaminated Uvjeti".
2. Post izolatori have high mehanički čvrstoća, small disperzija, i safe and pouzdan rad.
3. Post insulators have good low-temperature mechanical properties.
In order to test the low-temperature mechanical properties of the product, the freezing test of the ZSW1-110/4 type insulator was carried out by simulating the change of outdoor winter temperature in the low-temperature laboratory. After several temperature cycles, the test crystal was subjected to a bending failure test at low temperature. The test results prove that the bending failure strength of the insulator under the condition of -40 degree has no obvious change compared with room temperature.
4. Odličan mrlja otpornost
The pollution resistance performance of post insulators mainly depends on the structure of the product and the shape of the shed. A lot of work has been done in this area. Through the design, artificial pollution test and natural pollution test, the insulator sheds with alternating large and small sheds and ribs under the sheds are finally determined. The insulator developed with this shed has a rated voltage of 126kV, 252kV, a bending failure load of not less than 12kV, and a specific creepage distance of 25mm/kV. Under the equivalent salt density of 0.12mg/2, it can withstand high operating phase voltage for a long time, that is, The creepage distance of class III can withstand the equivalent salt pollution of class IV. An insulator with a rated voltage of 550kV and a specific creepage distance of 25mm/kV can operate for a long time under the equivalent salt density of 0.06mg/2. The pollution resistance level of post insulators is leading in China, and its equivalent salt density resistance is one-third higher than that of similar products with the same creepage and equal diameter sheds.
5. Visoka razina potres otpornost
Izolatori s rated naponi 252kV and 550kV have been subjected to seizmički performanse testovi with an intensity level of 9, and the test products are intact.
6. Nisko radio smetnje
The post inzolator s a rated voltage of 550kV, at 1.1 times the high operating phase voltage, can generate radio interference no greater than 500μV, and there is no visible corona on sunny days and nights, and the visible corona voltage can reach as high as 450kV.
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