A polyphase electric power supply system via which powerline communications are set up between a transmitter and a receiver. In certain embodiments, the quick release grill guard further comprises a grill guard coupling portion, a vehicle coupling portion, a latching portion a hinge, a quick release bar; and a clasping member. A vinyl aromatic monomer, such as styrene, is polymerized to form at least a second polymer block of the functional polymer. A conductive structure extending through the openings in the second element and through the first element electrically connects the terminals with the conductive elements. When the set magnification ratios are different for each service, the distribution of respective magnification ratios is determined so that magnification processing with the respective magnification ratios is carried out in the second image data processor.