抚顺干式变压器:干式和油浸式抚顺干式变压器标准的区别
干式和油浸式抚顺干式变压器标准的区别
国标GB 6450-86《抚顺干式变压器》与GB 1094—85 (1996)《抚顺干式变压器华盈非晶合金变压器有限公司是具备生产220KV电压等级变压器的现代化机械制造企业,公司注册资本8800万元,现有员工300余人,占地面积300余亩,公司拥有各种生产和使用设备100余台,产品工艺水平高,检测设备齐全,企业管理严格,产品质量可靠。求精务实,开拓创新,为用户提供完美的变压器解决方案,满足各层次客户的需求。主要产品有非晶合金变压器,干式变压器,SH15-M系列非晶合金变压器,非晶合金铁芯配电变压器,SCRBH15非晶合金干式变压器,SGBH15非晶合金变压器(10KV级),SCRBH15非晶合金卷铁芯干式变压器,35kv非晶干变变压器 35kv非晶油变变压器,超强过载能力变压器、电力变压器、油浸式变压器、矿用变压器、整流变压器、电炉变压器、特种变压器、等等,并提供新能源发电的升压及并网解决方案。我公司除生产以上10多个系列200多个品种,600多种规格的变压器外,还向用户提供非标特种产品的设计、制造。以上产品符合GB1094、GB/T6451、GB6450标准和等效IEC(国际电工委员会)标准。》即油浸式抚顺干式变压器有许多不同的地方:
1.正常使用条件下的温升限值
所谓正常条件就是海拔和环境温度.均符合GB1094. 1-1996中2. 1a和b的规定。但在这样的条件下,绕组温升限值两个标准不同。
2.高海拔条件下温升限值
当抚顺干式变压器在超过1000m海拔处运行,但试验却在正常海拔地点进行的空气冷却抚顺干式变压器,高出海拔1000m 以上,每500m为一级,其温升限值减小的百分数,两个标准不同。
3.高海拔运行时工频耐压
GB 1094-1985的短时工频耐受电压值不受海拔的影响。抚顺干式变压器则不然,GB 6450-1986规定:当抚顺干式变压器在海拔为1000-3000m之间运行,但试验却在正常海拢地点进行时,则其额定短时工频耐受电压值按安装地点超过1000,m的部分以每500m为一级增加6.25%。
4.绝缘水平耍求
用于一般配电网络或工业系统的抚顺干式变压器。其绝缘水平的要求. GB6450-1986低于或等于GB1094-1985。
5.局部放电试验
GB 1094-85对Um <252kV的抚顺干式变压器不要求做局部放电试验,而GB6450-86将局部放电试验作为特殊试验。但目前各制造厂都列为例行试验。
为了保证质量,应执行GB 6450-86《抚顺干式变邮 箱:1262980066@qq.com压器》的标准。
Dry and the difference between the standard oil-immersed transformer
National standard GB 6450-86 "dry-type power transformers," and GB 1094-85 (1996) "power transformer" that oil-immersed transformers in many different places:
1 under the conditions of normal use temperature rise limits
The so-called normal conditions is the altitude and ambient temperature. Are in line with GB1094. 1-1996 in 2. 1a and b of the regulations. However, in such conditions, the winding temperature rise limit of two different standards.
2 high-altitude conditions of temperature limits
When the transformer is running at more than 1000m above sea level, but the trial was conducted in the normal altitude air-cooled transformer locations, above the altitude above 1000m, 500m of each level, the percentage reduction of its temperature limits, two different standards.
3 high-altitude run-time power frequency withstand voltage
GB 1094-1985 the frequency withstand voltage value from the impact of altitude. Dry-type transformers is not the case, GB 6450-1986 states: When a transformer at an altitude of between 1000-3000m run, but the t企业账号:1611 0032 092 00213 086est is in normal sea-rope sites, then the rated frequency withstand voltage at the installation site exceeds 1000, m part of the increase per 500m to a 6.25%.
4 insulation level playing requirements
For general distribution networks or industrial system transformer. The insulation level requirements. GB6450-1986 is less than or equal to the GB1094-1985.
5 partial discharge test
GB 1094-85 of Um <252kV power transformer partial discharge test is not required to do, and GB6450-86 the partial discharge test as a special test. But the factories are classified as routine tests.
To ensure quality, should be implemented GB 6450-86 "dry-type power transformers," the standard.
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