DE1874073U - CURRENT CONVERTER WITH HANDLE FOR CROSSING CURRENT, FIXED CONDUCTORS. - Google Patents

Description

RA.255 518 * 17.if-63;

DlPL-ING. FRANZ WERDERMANN PATENT ADVERTISEMENT HAMBURG 13 13 APR INNOCENTIASTRASSE 30

TELEPHONE 452139

R. 1027 Wdm / eb,

Dro-Ingo Hans Ritz,
Hamburg.

Current transformer with handle for reaching over current-carrying, permanently installed conductors »

.'The utility model relates to an electricity

V '

wandlear with a handle to reach over current-carrying, Fixed conductor, especially cables or rails »

There are already current transformers, of this type in the form of so-called Clamp converter or: cable conversion current converter known, in which the measuring winding (secondary winding) carrying the iron core for the purpose of grasping the conductor, its Current is to be measured, is designed to be divided, so that its two parts can be moved relative to one another, To create a closed magnetic circuit that completely surrounds the conductor (primary conductor) at the moment of measurement to form «, These converters are, however, in the case of cables or rails laid close to a wall or close together generally not applicable due to their dimensions

To remedy this, a current transformer of the type mentioned in accordance with the utility model is the the measuring winding (secondary winding) carrying core as;

IA.255 518 * 4/17/63 O

open magnetic circuit and designed approximately U-shaped, so that he with the handle in the manner of a two-pronged fork can be placed over the live conductor.

Various training courses are possible in detail. For example, the middle leg of the U-shaped core arcuately rounded and be, in particular semi-circular, but it may also be substantially ₀ The straight designed: ψΒ sswicklung may be disposed aussclrliesalich shaped U-order to achieve a narrow construction on the center leg of the core. It can be provided with taps for different translations.

The core and the measuring winding are preferably made of a housing or embedding body made of insulating material enveloped: wherein a shaft attachment can be provided as part of the handle or merge directly into the handle can »The handle can, also through a rigid rod being extended »The supply line is flexible, so that when it is not in use it can be rolled up into a Toolbox or briefcase is possible «,

The leads to the measuring winding can be equipped with terminals or plugs for connecting a measuring instrument, if necessary via an amplifier - the measuring instrument or, if necessary, a writing device (current recorder.) and, if necessary, an amplifier can be used with the housing or input made of insulating material.

RA.255 516 * 4/17/63 /

bedding body or also be structurally combined with the handle in such a position that when the converter is inserted there is a good possibility of observing the instrument by hand.

The following is the utility model based on the. For example, the drawing is explained in more detail:

1 is a U-shaped iron core that forms an open magnetic circuit. The measuring or secondary winding 2 is arranged on the side arm of the U-shape. An embedding body. 3 completely envelops the core and winding in the manner of a housing and, together with a shaft attachment 4, forms a handle which can be extended by a rod or a tube 5. The secondary diversion a. 6 are from the ends and, where appropriate, taps dej? Measuring winding 2 passed through the handle and placed directly on a measuring instrument 7 via terminals or plugs and external connecting lines. Instead, as indicated schematically below, the schematically arranged instrument 7%, the Z ₀ B _{0 can} also be a writing device. An amplifier 8 can be connected upstream be structurally united. 10 is a live conductor permanently installed in a system, ζ _ο Β »a cable or a rail over which the converter can be placed using the handle in the manner of a two-pronged fork.

The currents to be measured can be read off in a sufficiently approximate manner for each common measuring device and each common measuring range for practice due to a calibration or: can be calculated from the display value of the measuring instrument connected to the measuring winding. The performance of such a feeder can be, for example, about 0.1 to 1 VA with currents of about 50 to 1000 amperes. Ron for supplying measuring devices with greater power requirements, an amplifier may be provided., Me formation and design of the handle is determined by the spatial conditions, as well as the operating voltages of the system "

The insulating sheath of the transducer can also serve as a handle. As an insulating sheath, a sheath provided with a right-angled hose attachment, as is known per se for low-voltage plugs _P , can be used in such a way that the two isolated core legs of the transducer protrude from it *

Claims (6)

RA, 255 518 * 4/17/63 - 5 protection claims lo) Current transformer with handle for reaching over current-carrying, permanently installed conductors, in particular cables or rails, characterized in that its core carrying the measuring winding (secondary winding) is designed as an open magnetic circuit and is approximately U-shaped so that it can be used with the handle Like a two-pronged fork, it can be placed over the current-carrying conductor whose current is to be measured ₀ 2.) Current transformer according to claim 1, characterized in that the measurement / only on the middle leg of the U-shaped core is arranged. 3t) current transformer according to claim 1 or 2, characterized in that the measuring winding taps to choose from of the gear ratio. 4o) current transformer according to claim 1, 2 or 3, characterized characterized in that the core and the measuring winding are encased by a housing or embedding body made of insulating material, which or, if necessary, together with a shaft attachment, forms a handle, or, directly passes into a handle " 5.) Current transformer according to one of claims 1 to 4, characterized in that the leads to the measuring winding with terminals or plugs for connecting a measuring instrument or a writing device, if applicable via an amplifier, 6.) Current transformer according to one of claims 1 to 4> characterized in that a. Measuring instrument and, if applicable also an amplifier with the housing or embedding body made of insulating material or optionally is structurally united with a handle for higher tension 7o) current transformer according to one of claims 1 to 6, characterized in that the insulating sheath of the transducer and / or the handle made of flexible insulating material consistso 8o) current transformer according to / one of the preceding claims, characterized in that an insulating cover provided with a tube extension bent at right angles for the transducer is used in such a way that the core legs provided with an insulation protrude therefrom. 9o) current transformer according to one of the preceding claims, characterized in that the insulating sheath is a hose connection extending at right angles at 25 provided sheath, as it is for low-voltage plugs per se is known, is used in such a way that the two isolated core legs of the transducer protrude therefrom.