Abstract:
This device consists of a housing (1) made of electrically insulating material, in which a fuse (6) is provided with at least one main fuse wire (7) located in its cavity. The main fuse wire (7) is electrically conductively connected at one end to at least one connecting pin (2) which is led out of the housing (1) and at the other end it is electrically conductively connected to at least one terminal (3) located in at least one cavity (4) formed in the housing (1). The shape of the connecting pin (2) is adapted for connection to the protected device.
Abstract:
A triggering circuit of an overvoltage protection device with an asymmetric element, specified for actuating a spark gap in symmetric or asymmetric arrangement of main electrode I, connected to input terminal I, of main electrode II, connected to input terminal II, and the auxiliary electrode, includes main electrode I of the spark gap, which is connected via a thermo-sensitive disconnector, and also via a parallel combination of varistor II and capacitor I to electrode I of the asymmetric three-pole lightning arrester, whose middle electrode is connected via the primary winding of the transformer to main electrode II of the spark gap, whose auxiliary electrode is connected via varistor I to electrode II of the asymmetric three-pole lightning arrester, which is connected via the secondary winding of the transformer to main electrode II of the spark gap, and at the same time, the thermo-sensitive disconnector is coupled via the thermal coupling with varistor II and, at the same time, the voltage at the asymmetric three-pole lightning arrester is as follows: static ignition voltage U1 between electrode II and the middle electrode is higher than static ignition voltage U2 between the middle electrode and electrode I.
Abstract:
A triggering circuit of an overvoltage protection device with an asymmetric element, specified for actuating a spark gap in symmetric or asymmetric arrangement of main electrode I, connected to input terminal I, of main electrode II, connected to input terminal II, and the auxiliary electrode, includes main electrode I of the spark gap, which is connected via a thermo-sensitive disconnector, and also via a parallel combination of varistor II and capacitor I to electrode I of the asymmetric three-pole lightning arrester, whose middle electrode is connected via the primary winding of the transformer to main electrode II of the spark gap, whose auxiliary electrode is connected via varistor I to electrode II of the asymmetric three-pole lightning arrester, which is connected via the secondary winding of the transformer to main electrode II of the spark gap, and at the same time the thermo-sensitive disconnector is coupled via the thermal coupling with varistor II and at the same time, the voltage at the asymmetric three-pole lightning arrester is as follows: static ignition voltage U1 between electrode II and the middle electrode is higher than static ignition voltage U2 between the middle electrode and electrode I.
Abstract:
This device consists of a housing (1) made of electrically insulating material, in which a fuse (6) is provided with at least one main fuse wire (7) located in its cavity. The main fuse wire (7) is electrically conductively connected at one end to at least one connecting pin (2) which is led out of the housing (1) and at the other end it is electrically conductively connected to at least one terminal (3) located in at least one cavity (4) formed in the housing (1). The shape of the connecting pin (2) is adapted for connection to the protected device.
Abstract:
An overvoltage protection with indication of exceeded operating temperature, where the overvoltage protection includes at least one protection element from the group of a two-pole protection component, a two-pole protection component complemented with a temperature dependent fuse, and/or a three-pole protection component. All protection components used in the given overvoltage protection is linked via a thermal link to the status indicator including a thermosensitive layer with irreversible change of color in case a temperature of the destructed protection members of the overvoltage protection is exceeded
Abstract:
The submitted voltage limiter consists of the insulating shell (26), closed from the top by the electrically and thermally conductive first contact plate (2) provided with the first connecting point (1) and from the bottom by the electrically and thermally conductive second contact plate (10) provided with the second connecting point (9). The embodiment of the two triggering semiconductor elements (5, 13) oriented in opposing directions and the protection member (17) connected to it in parallel, located between the two inner plates (3, 11), is located inside the insulating shell (26). The semiconductor elements (5, 13) are simultaneously interconnected with the electronic control device and connecting points (1, 9). The limiter is equipped with compressive construction to provide clamping and electrical interconnection of individual parts. The first triggering semiconductor element (5) is located between the thermally and electrically conductive first inner plate (3), which is in contact with its cathode (7) and the first contact plate (2), which is in contact with its anode (6). The second triggering semiconductor element (13) is located between the thermally and electrically conductive second inner plate (11), which is in contact with its cathode (15) and the second contact plate (10), which is in contact with its anode (14). The electronic control device may be located outside or inside the insulating shell (26) and consists of the first control device (4) interconnected with the control electrode (8) of the first triggering semiconductor element (5), the first contact plate (2) and the first inner plate (3) and interconnected with the control electrode (16) of the second triggering semiconductor element (13), with the second contact plate (10) and the second inner plate (11) from the second control device (12).
Abstract:
The submitted voltage limiter consists of the insulating shell (26), closed from the top by the electrically and thermally conductive first contact plate (2) provided with the first connecting point (1) and from the bottom by the electrically and thermally conductive second contact plate (10) provided with the second connecting point (9). The embodiment of the two triggering semiconductor elements (5, 13) oriented in opposing directions and the protection member (17) connected to it in parallel, located between the two inner plates (3, 11), is located inside the insulating shell (26). The semiconductor elements (5, 13) are simultaneously interconnected with the electronic control device and connecting points (1, 9). The limiter is equipped with compressive construction to provide clamping and electrical interconnection of individual parts. The first triggering semiconductor element (5) is located between the thermally and electrically conductive first inner plate (3), which is in contact with its cathode (7) and the first contact plate (2), which is in contact with its anode (6). The second triggering semiconductor element (13) is located between the thermally and electrically conductive second inner plate (11), which is in contact with its cathode (15) and the second contact plate (10), which is in contact with its anode (14). The electronic control device may be located outside or inside the insulating shell (26) and consists of the first control device (4) interconnected with the control electrode (8) of the first triggering semiconductor element (5), the first contact plate (2) and the first inner plate (3) and interconnected with the control electrode (16) of the second triggering semiconductor element (13), with the second contact plate (10) and the second inner plate (11) from the second control device (12).
Abstract:
The design of the triggering circuit 1 of the overvoltage protection, connected via three poles 4 to the spark gap of the overvoltage protection, provided with the first input terminal 2 and the second main terminal 3, whose principle consists that an auxiliary electrode 7 of the spark gap 4 is connected in series to the first varistor 8 and one end of the secondary winding 14 of the transformer 13, the other end of which is connected to the second main electrode 6 of the spark gap 4 and the second input terminal 3, whereas one end of the primary winding 15 of the transformer 13 is connected in series to the gas discharge tube 10, the second varistor 9, resistor 11 and capacitor 12, connected to the other end of the primary winding 15 of the transformer 13, connected to the second input terminal 3, whereas the junction connecting the second varistor 9 to the resistor 11 is interconnected with the junction, connecting the first input terminal 2 to the first main electrode 5 of the spark gap 4. The advantage of such a design of the triggering circuit 1 of overvoltage protection resides in the thermosensitive disconnector 17 coupled with the thermal coupling 16 to the second varistor 9, is either connected in series to the second varistor 9, or connected to the link of the junction connecting the second varistor 9 to the resistor 11 and the junction connecting the first input terminal 2 to the first main electrode 5 of the spark gap 4, or that the thermosensitive disconnector 17 is connected between the primary winding 15 of the transformer 13 and the gas discharge tube 10.