How do I connect the differential machines
There are two main options for installing a differential machine. He put one on the whole grid, or set several items, one for each separate line. You can put automatic differential during custom installation is not on every line, and only there, where should ensure the safety of people with possible contact with live parts of electrical equipment. It should be guided by the principal rule of installation Emergency circuit breakers - it has to do only a specialist.
Instruction how to connect the differential machines
Check the installed device for damage and cracks as required by the installation rules. This needs to be done, as in the presence of a complete data protection fault will not be provided. These rules apply to all, without exception, of such devices. It is necessary to carefully check the correct operation of the device switching mechanism and the appropriate marking on the unit. Differential rifles and RCD (residual current device) are almost the same products, so they are equally connected.
Install differential in automatic switchboard on DIN-rail. It works: he compares the electric current flowing through the phase conductor with a current passing through the neutral conductor. Their value is usually the same, if the device is in good or damaged wiring insulation. In the case where the leakage current arises in the circuit, their value will be different. Emergency circuit breakers instantly detects these changes and compare the level of leakage current with a nominal value provided for the device. When the leakage current readings exceed the nominal value, the machine will shut off the power on this site power. Turn on power supply again is possible only after troubleshooting.
Connect the machine to a differential two wire - and zero phase at 220 V or three-phase zero and one at the network of 380 V. Emergency circuit breakers differ from the RCD that it not only protects a person from electric shock, but produces automatic disconnection of any network segment in event of an overload or short circuit. It is integrated overcurrent protection, which is not in the RCD. According to the normative regulations, it is recommended the installation of automatic differential only. The group lines is strictly forbidden to place the common RCD, if not worth the extra unit that is responsible for protection against short circuits and overloads. There are separate rules of installation of these devices in residential areas. Allowed to install only the "A" type of protective device responsive to the pulsating and alternating currents damage. You can also set the RCD type "AC", responding only to variable leakage currents.