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Due to the increasing demand of energy for the operation of domestic appliances, are increasing annoying blackouts that are generated when the power demand has exceeded the contract supplied by the counter. The TE7791 operates fully automatically and it controls automatically the loads and this avoid the overhead. Installed immediately downstream of the meter, its current sensor constantly monitors that the current flowing through the device is less than 14.3 A (so that the power at 230Vac is less than 3,3 KW). With 4 output channels, one priority and the other three no-priority, the TE7791 when overloaded detected begins to release the first of three no-priority channels off the power to the load connected to it. If the overload persisting drops the second channel and in case of necessity the last third channel. The loads connected to the priority channel are always fed. Each channel is signaled by an LED and a buzzer that sounds at different frequencies depending on which channel has been dropped. The fully automatic device every 30 seconds trying to re-enter the last channel dropped to 5 seconds and if there is a new overload, it releases. Otherwise repeat the operation with the next channel. Anyway, is possible to reset manually the channels by holding down the reset button: the channels are reintegrated one after another every 5 seconds, but in case of overloading the new operation will stop.
The TE7791B is constantly monitoring the current flowing through the device is less than 14.3 A (so that the power at 230Vac is less than 3.3 KW) by playing a sound whose frequency increases with the degree of overload (over 15.6 to the sound becomes continuous).
Sensors load TE7792 and TE7792B signal when a load is active. Through a trimmer on the front, is possible to set a current value below which there is no signaling. The trimmer allows to adjust the threshold for action between 100W and 2000W. Above the set threshold, the device indicates the operation of a device connected to it by the lighting of an LED and a contact closure of a C-NO relay. Version TE7792B device also indicates the operation of the load even with the sound of a buzzer. Useful in all applications where you are not able to know if the load is working or not. For example is possible to check the operation of a submersible pump with watertight float.