摘要:
The apparatus has an inverter housing (7) provided with a safety fuse (8). Positive direct current voltage (Plus Uzwk) or negative direct current voltage (Minus Uzwk) is grounded through the safety fuse. The safety fuse is provided in a plug connector part that is equipped with three plug connectors. The plug connectors are plugged at an outside of the inverter housing. Three mating contacts corresponding to the plug connector part are provided on the inverter housing. The safety fuse is located in a cup-like part, and an inverter is equipped with a transformer. An independent claim is also included for a method for converting a photovoltaic current of a photovoltaic generator.
摘要:
An electric fuse (10) is comprised of a tubular fuse casing (12) formed of an electrically insulating material. A first conductive component (2) is attached to a first end of the casing (12) and a second conductive component (3) is attached to a second end of the casing (12). A first conductive path is formed through the tube (12) between the first (2) and second (3) conductive components. The conductive path includes a fusible element (20) having a first resistance. A second conductive path (44) is formed along the exterior of the tubular fuse casing (12). The second conductive path (44) is in parallel to the first conductive path (20) and has a second resistance greater than the first resistance. The second conductive path (44) includes an indicator component (40). The indicator component (40) is comprised of a first layer (42) comprised of a colored material, and a second layer (44) comprised of an electrically conductive material deposited onto the first layer (42). The second layer (44) has a region (44a) of increased resistance. An inner cavity (72) is located above the region (44a) of increased resistance on the second layer (44). A third layer (66) comprised of a transparent, polymeric material covers the cavity (72) and the first (42) and second (44) layers.
摘要:
An electric fuse (10) is comprised of a tubular fuse casing (12) formed of an electrically insulating material. A first conductive component (2) is attached to a first end of the casing (12) and a second conductive component (3) is attached to a second end of the casing (12). A first conductive path is formed through the tube (12) between the first (2) and second (3) conductive components. The conductive path includes a fusible element (20) having a first resistance. A second conductive path (44) is formed along the exterior of the tubular fuse casing (12). The second conductive path (44) is in parallel to the first conductive path (20) and has a second resistance greater than the first resistance. The second conductive path (44) includes an indicator component (40). The indicator component (40) is comprised of a first layer (42) comprised of a colored material, and a second layer (44) comprised of an electrically conductive material deposited onto the first layer (42). The second layer (44) has a region (44a) of increased resistance. An inner cavity (72) is located above the region (44a) of increased resistance on the second layer (44). A third layer (66) comprised of a transparent, polymeric material covers the cavity (72) and the first (42) and second (44) layers.
摘要:
Eine Schaltungsvorrichtung zur Erdung eines Wechselrichters (3), der eine Gleichspannung in eine netzfrequente Wechselspannung wandelt, mit einem Wechselrichtergehäuse (7) und mit einer Schmelzsicherung (8), die eine positive oder negative Gleichspannung mit einem Erdungsanschluss verbindet, soll derart geschaffen sein, so dass ein Installateur die Möglichkeit hat, mit geringem Aufwand ein Wechselrichtergerät auf Wunsch positiv oder negativ zu erden, wobei ein IP-65 Bereich des Gerätes verschlossen bleiben kann. Dies wird dadurch erreicht, dass am Wechselrichtergehäuse (7) eine von außen zugängliche und von außen aufsteckbare Schmelzsicherung (8) angeordnet ist, die wahlweise auf eine positive oder negative Gleichspannung derart kontaktierbar ist, dass entweder eine positive oder negative Gleichspannung über die Schmelzsicherung (8) geerdet wird.
摘要:
Method for estimating the adequacy of a protective device in grid impedance or resistance meter that contains a list of protective devices with their data, where an operator selects data related to a predicted protective device and makes measurements on the protective device, in order to compare them with the data of the predicted protective device, and where the result of the comparison indicates the adequacy of the protective device.
摘要:
The device (100) comprises an current generator (50) adapted to deliver a pilot current (P) through the fuse or contact (10) to be diagnosed, and a computing/electronic module for verifying if the delivered pilot current (P) flows through the fuse or contact (10). The computing/electronic module comprises a transformer (T1) for separating potentials between the fuse or contact (10) to be diagnosed and the computing/electronic module, transistors (Q1, Q2) provided in the primary windings of the transformer (T1), and condensers (C1, C2) provided in the secondary windings of the transformer (T1).
摘要:
The apparatus has an inverter housing (7) provided with a safety fuse (8). Positive direct current voltage (Plus Uzwk) or negative direct current voltage (Minus Uzwk) is grounded through the safety fuse. The safety fuse is provided in a plug connector part that is equipped with three plug connectors. The plug connectors are plugged at an outside of the inverter housing. Three mating contacts corresponding to the plug connector part are provided on the inverter housing. The safety fuse is located in a cup-like part, and an inverter is equipped with a transformer. An independent claim is also included for a method for converting a photovoltaic current of a photovoltaic generator.