1. Frequency: 60Hz or 50Hz
2. Rated HV: 6 kv, 6.3 kv, 10 kv, 10.5 kv, 11 kv
3. Regulator way: Off-circuit-tap-changing or on-load-tap-changing
4. Cooling methods: onAN or ONAF
5. Normal using conditions: Outdoor or indoor
6. The altitude of installation could not be over 1000m
7. Environment temperature:
. Highest temperature: +40 degree centigrade
. Highest daily average temperature: +30 degree centigrade
. Highest yearly average temperature: +20 degree centigrade
. Lowest outdoor temperature: -25 degree centigrade

8. Distributing winding turns evenly, high mechanical strength and strong sudden short-circuit bearing capability.
9. Active part (core and winding assembly) adopt fastness measure and use locknut, which can bear the shake during transportation.
10. Dry windings and core in vacuum; Using vacuum filtrating and impregnating oil techniques make the humidity in box to be least.
11. Tank use corrugated slice which has breathing function to compensate the vol. Change of oil caused by temperature. So no oil conservator reduces transformer's height.
12. Corrugated slice separates oil from contacting outside. So it prevents oxygen, water from entering into box to make insulation ability debased.
13. Advanced design and reasonable structure, small size, light weight, easy installation, and good economic performance.
14. Strong ability over changing, low loss and noise.
15. Full sealed, with thermometer and pressure relief device.
16. Can run under harsh environment, like metallurgy and landification.
17. Product Standard:
GB1094.1~2-1996
BG1094.3~5-2003
BG/T6451-1999