A surge protector includes a coaxial through-section having a first inner conductor and a first outer conductor and a stub having a second inner conductor and a second outer conductor. More specifically, the present invention relates to a process by which a terephthalic acidethylene glycol mixture suitable as a starting material for polyester or co-polyester production is obtained from a slurry or cake terephthalic acid product without isolation of a substantially dry terephthalic acid solid. The configuration file can be updated on each start of the system so that the system can maintain information indicative of current configuration files. The machines are mechanically coupled to permit energy recovery and charge an accumulator to store surplus energy. The above is applied in marking.