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和连云港变压器标准的区别
作者:连云港变压器厂 日期:2018-07-24 人气:1081
和连云港变压器标准的区别
国标GB 6450-86《连云港变压器》与GB 1094—85 (1996)《连云港变压器》即连云港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
当连云港变压器在超过1000m海拔处运行,但试验却在正常海拔地点进行的空气冷却连云港变压器,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。连云港变压器则不然,GB 6450-1986规定:当连云港变压器在海拔为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
用于一般网络或工业系统的连云港变压器。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的连云港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《连云港变压器》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 test 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.
国标GB 6450-86《连云港变压器》与GB 1094—85 (1996)《连云港变压器》即连云港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
当连云港变压器在超过1000m海拔处运行,但试验却在正常海拔地点进行的空气冷却连云港变压器,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。连云港变压器则不然,GB 6450-1986规定:当连云港变压器在海拔为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
用于一般网络或工业系统的连云港变压器。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的连云港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《连云港变压器》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 test 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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