摘要:
A compact earthing switch (1′) is provided by a mounting lid (10) of the gas-insulated switchgear assembly (15) having a concave physical volume (100) which extends the gas chamber (9) and by the earthing switch fixed contact (12) being mounted on an inner side (10e) of the mounting lid (10) and being arranged at least partially in the physical volume (100) of the mounting lid (10). Exemplary embodiments relate, inter alia, to: an essentially cylindrical mounting lid (10; 10a 10e); an earthing switch fixed contact (12) having a physical length (L) which is smaller than an axial physical depth (T) of the physical volume (100); and a large diameter (D) of the mounting lid (10) for simplified mounting and maintenance of active parts 7a, 7b) in the switchgear assembly (15). Advantages include: the compact design for the grounding device the ability of the earthing switch fixed contact (12) to be ready-mounted on the mounting lid (10); and the integration of the earthing switch fixed contact (12), which is integrated in the mounting lid (10), in a combined disconnector/earthing switch (1′).
摘要:
The invention pertains to a current transformer (1′) for enclosed, gas-insulated high-voltage switchgear (10). According to the invention, a current transformer (1′) is characterized in that a removable installation flange (12, 12′) is provided on a fill opening (3c) of the core carrier (11) for one-piece current transformer cores (2). Among other things, embodiments pertain to: a removable installation flange (12, 12′) in the form of a two-part clamping flange (12) or in the form of a one-piece rotary flange (12′) that is screwed on the fill opening (3c) similar to a bayonet catch. Among other things, the attained advantages are: radially increased installation space for one-piece current transformer cores (2); reduced diameter (d) for one-piece current transformer cores (2) and reduced structural volume of the current transformer casing (11a).
摘要:
The invention relates to an earthing switch (1′), in particular for gas-insulated high-voltage switchgear assemblies (15). According to the invention, a compact earthing switch (1′) is provided by a mounting lid (10) of the gas-insulated switchgear assembly (15) having a concave physical volume (100) which extends the gas chamber (9) and by the earthing switch fixed contact (12) being mounted on an inner side (10e) of the mounting lid (10) and being arranged at least partially in the physical volume (100) of the mounting lid (10). Exemplary embodiments relate, inter alia, to: an essentially cylindrical mounting lid (10; 10a-10e); an earthing switch fixed contact (12) having a physical length (L) which is smaller than an axial physical depth (T) of the physical volume (100); and a large diameter (D) of the mounting lid (10) for simplified mounting and maintenance of active parts (7; 7a, 7b) in the switchgear assembly (15). Advantages include: the compact design for the grounding device (1′); the ability of the earthing switch fixed contact (12) to be ready-mounted on the mounting lid (10); and the integration of the earthing switch fixed contact (12), which is integrated in the mounting lid (10), in a combined disconnector/earthing switch (1′).
摘要:
The current-limiting switch (S) has an arc-resistant contact arrangement (K1), which is intended to carry the rated current (IN), of a first switching point (S1), and two commutation paths (P1 and P2) connected in parallel with the first switching point (S1). The first commutation path (P1) contains, in series, a contact arrangement (KT) of a second switching point (ST) and an electronic power switching apparatus (T). The second commutation path (P2) contains, in series, a switching apparatus (SA) and a current-limiting element (RB). The contact arrangements (K1 and KT) are designed to be coaxially symmetrical and are arranged in a pressure-resistant housing (G). Both switching points have electrodynamic drives which open and close very quickly. Thanks to the extremely space-saving, coaxial arrangement of the contact arrangements, undesirable stray inductances can be avoided. This allows the current-limiting switch to be switched on and off very quickly.
摘要:
The switching point in a high or medium voltage switch contains two stationary switch pieces which are of cylindrical design and led coaxially into one another, to form an annular gap. A movable bridge switch piece constructed in the form of a contact ring fits into the annular gap when the switching point is closed. An electrodynamic drive comprising two coils moves the contact ring in the axial direction. By virtue of the low mass of the contact ring, the single moving part of the switching point can be switched on and off very quickly and efficiently.