主要技术要求：
1、绝缘电阻：绝缘子在下列温度条件下的绝缘电阻为：
（1）20±5℃时不小于1×10¹¹Ω。（2）125±2℃时不小于1×10¹⁰Ω。
2、机械试验：绝缘子以下列机械条件试验，玻璃应无裂痕，密封有破坏。
（1）振动试验：振频为50±5HZ、加速度为15g、振动3小时。
（2）冲击试验：冲频为40～80次/分、加速度75g，冲击次数4000次。
（3）离心试验：加速度：50g，进行5分钟。
3、潮湿试验：绝缘子在温度为40±2℃，相对湿度95±3%环境中，加额定直流工作电压的120%条件作用下，经受240小时后，玻璃应无裂纹和密封性不破坏，绝缘电阻应不小于1×10¹⁰Ω。
4、高温负荷：绝缘子在温度为＋125℃，加额定直流工作电压120%作用经240小时后，玻璃应无裂纹和密封性不破坏，绝缘电阻应不小于1×10¹⁰Ω。
5、温度冲击：绝缘子经－55～＋125℃三次温度冲击作用后，玻璃应无裂纹和密封性不破坏，绝缘电阻不小于10¹⁰Ω。
6、低气压试验：绝缘子在表2中规定的低气压条件下，应能承受的相应1.2倍直流工作电压值的试验电压的作用，而无击穿和飞弧。
Main Technical Data
1、Insulation Resistance
（1） on less than 1×10¹¹Ω at 20±5℃　　（2）on less than 1×10¹⁰Ω at 125±2℃
2、Mechanieal Test:These shall be no cracks with glass part and on damages to hermetic body.
(1)Vibration test:3 hours vibration at a frequency of 50±5HZ and an accelerating speed of 15g.
(2)Impact test:4000 times of impacts at an impact frequency of 40-80 times/min and and accelerating speed of 75g.
(3)Centrifugal test:5 minutes at.an accelerating speed of 50g.
3、Moist Test:Insulating resistance shall be no less than 1×10¹⁰Ω and there shall be no hydrolysis occurring with the glass part and no dumages to hermefic body after 240 hour test at the femperature of 95±% and under a load which is 120% of the rated DC working voltage.
4、Ltigh Temperature Load:Insulating resistauce shall nemain no less than 1×10¹⁰Ω and thest shall be no cracking with glass part and no damages to hermetic body through 240 hour test at the temperature of 125℃ and under a load which is 120% of the rated DC vohage.
5、Temperature Input:Insulating nesistauce shall vmain no less than 1×10¹⁰Ω and there shall be no cracking with glass part and no damages to hermetic body through three times of impacts in the femperature rauge of －55～＋125℃。
6、Low Atmospheric Pressme Test
These shall be no lrcakown or arcs occurring during the test with the voltage value white is 1.2 times as working volfage under the atmospheric corditious sa specifide in table 2.