... tube ,oil vent plug.6. Power supply: Rated output 7. There are fuses in power input terminal and output terminal. When ... . Anti-lightning Protection .The input terminal and output terminal are equipped with anti-lightning protection circuit, and accord to IEC1024 ... alarm for faults include the doors of tank are open, power supply fault, overheating, over current, overvoltage, power line lack . etc.10 ...