DE20004689U1 - System for contacting electrical switching devices - Google Patents

Description

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Natus GmbH & Co. KG N 2537 - Sf/Fa

System for contacting electrical switching devices

The invention relates to a system for contacting electrical switching devices with counter contacts in electrical switchgear, in particular low-voltage switchgear, in particular with busbars and control contacts present in a switch cabinet.

Switching devices in such low-voltage switchgear systems are usually arranged on device inserts and can be inserted into a drawer in the switch cabinet. Contact with the counter contacts in the switch cabinet is made, for example, by sliding the switching devices over the device insert in the direction of the counter contacts. The switching contacts on the switching devices are thus contacted with the counter contacts. In addition, it is known not to move the entire switching devices, but only their switching contacts. The moving mass is therefore smaller.

The invention is based on the object of specifying a system of the type mentioned at the beginning, which is structurally improved.

This object is achieved by a system for contacting electrical switching devices with counter contacts in electrical switchgear, in particular low-voltage switchgear, in particular with busbars present in a switch cabinet, with a preferably cascaded

A carrier in the form of a box which can be inserted into a slot in a switch cabinet and on which the switching contacts to be connected to the counter contacts as well as means for contacting the switching contacts with the counter contacts are arranged and which is designed to optionally accommodate various switching devices.

By arranging the switching contacts on a carrier instead of on the control devices themselves, the contacting of different switching devices can be carried out using the same carrier. This means that the carrier used for contacting can be combined with various switching devices that do not have to have switching contacts themselves. The switching devices can thus be structurally simplified, and a carrier with the means for contacting only needs to be created once, which is then combined with the switching device required in each case.

The carrier preferably has means for preventing faulty conditions, such as means for blocking the movement of the switching contacts when the switchgear is switched on. By incorporating these means in the carrier, the switching devices are also freed from this and thus further simplified in design.

Preferably, the carrier can be moved into the slot on rails and locked into place. This makes it easier to insert the carrier and secures it in the slot.
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According to a further embodiment of the invention, the carrier has contact rails with sliding contacts arranged thereon which can be moved when the carrier is inserted into a slot.

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can be contacted with the counter contacts along the contact rails. This avoids moving the entire carrier with the switching device. Instead, only the sliding contacts need to be moved.

The switching devices can be electrically connected to the switching contacts of the carrier via cables and/or rigid lines. This enables a secure electrical contact to be established.

To attach the switching devices to the carrier, the carrier has rows of holes on both sides. This makes it easy to attach different switching devices.

In particular, switching devices with a height of two to twelve height units can be mounted on the carrier, with one height unit corresponding to 70 mm. The carrier has proven to be particularly suitable for this area.

According to a further embodiment of the invention, the carrier has a double arrangement of switching contacts. The switching contacts are arranged in particular in two rows one above the other. Such a double design of the switching contacts is particularly advantageous for larger current intensities.

The system according to the invention is preferably provided with control contacts and is designed in such a way that the control contacts can be connected to the control counter contacts of the control cabinet for testing purposes when the switching contacts are separated from the counter contacts. This allows necessary tests to be carried out.

Embodiments of the invention are illustrated in the drawing and are described below. They show, each in schematic representation,
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Figure 1 is a plan view of a cassette carrier according to the invention,

Figure 2 is a side view of a cassette carrier with a switching device arranged thereon and

Figure 3 is a side view of a variant of Figure 2.

The cassette carrier shown in Figures 1 and 2 has a rectangular frame 1, at the rear end of which, as seen in the insertion direction I, three switching contacts 2 are shown as an example. The switching contacts each comprise a contact rail 3 and a sliding contact 4 guided so as to be displaceable thereon. The sliding contacts 4 can be displaced along the contact rails 3 in such a way that they protrude beyond the rear ends of the contact rails 3 and come into contact with corresponding counter-contact rails (not shown here) which are provided in an associated control cabinet.

The sliding contacts 4 can be moved along the contact rails 3 by means of a common actuating device. This actuating device, which is also not shown here, can be operated from the front 5 of the cassette carrier 1. The cassette carrier 1 is also provided with a row of holes 8 on both sides 7.

Different switching devices 9 can be attached to the cassette carrier 1 using rows of holes 8. Switching devices 9 of different heights are shown schematically in Figure 2. The switching devices 9 can be up to 1 m high or correspond to 2 to 12 height units, with one height unit being 70 mm. The electrical connection of the switching devices 9 to the cassette carrier 1 is made, for example, via cables or rigid lines, which are not shown here.

The cassette carrier 1 also has control contacts (also not shown here) that can be connected to corresponding control counter-contacts in the switch cabinet. For insertion into the switch cabinet, the cassette carrier also has rail guides 10 that interact with corresponding rails in the switch cabinet. Also preferably, means (not shown) for preventing incorrect operation, such as means for blocking the movement of the switching contacts 4 when the switchgear is switched on, are arranged on the cassette carrier 1. In principle, all the necessary blocking devices can be arranged in the cassette carrier 1. This means that all the means required for contacting a switching device with a switch cabinet can be accommodated in the cassette carrier 1, while the switching devices themselves can be kept free of these means.

The variant shown in Figure 3 largely corresponds to the variant in Figures 1 and 2. The cassette carrier 1 here only has additional switching contacts 11, which in turn each comprise a contact rail 12 and sliding contacts 13 that can be moved on it. The switching contacts 11 are arranged above the switching contacts 2, also in series. This design allows the cassette carrier

for switching devices with higher currents, for example 800 amps. This arrangement can also be used for a star-delta connection. ....

By accommodating all the means required for contacting the switching devices with the control cabinet in the cassette carrier 1, the switching devices 9 can be structurally simplified. In addition, one and the same cassette carrier 1 can be combined with different switching devices 9. Overall, this results in a cost-effective structure of the system according to the invention. _

1 Cassette carrier 2 Switch contact 3 Contact rail 4 Sliding contact 5 Front of 1 6 Back of 1 7 Page of 1 8th Hole row 9 Switchgear 10 Rail guidance 11 Switch contact 12 Contact rail 13 Sliding contact I Entry direction

List of reference symbols

Claims (10)

1. System for contacting electrical switching devices (9) with mating contacts in electrical switchgear, in particular low-voltage switchgear, in particular with busbars present in a switchgear cabinet, with a preferably cassette-like carrier (1) which can be inserted into a drawer compartment of a switchgear cabinet, on which the switching contacts (2, 11) to be connected to the mating contacts and means for contacting the switching contacts with the mating contacts are arranged and which is designed to optionally accommodate various switching devices (9). 2. System according to claim 1, characterized in that means for preventing incorrect operation, such as means for blocking the movement of the switching contacts (2, 11) when the switchgear is switched on, are arranged on the carrier (1). 3. System according to claim 1 or 2, characterized in that the carrier (1) can be moved into the insertion compartment on rails and can preferably be locked there. 4. System according to one of the preceding claims, characterized in that the carrier (1) has contact rails (3) with sliding contacts (4) arranged displaceably thereon, which can be contacted with the counter contacts by sliding along the contact rails (3) when the carrier (1) is inserted into a slot. 5. System according to one of the preceding claims, characterized in that the switching devices (9) can be electrically connected to the switching contacts (2, 11) of the carrier (1) via cables and/or rigid lines. 6. System according to one of the preceding claims, characterized in that the carrier has rows of holes (8) on both sides, via which the various switching devices (9) can be fastened to the carrier (1). 7. System according to one of the preceding claims, characterized in that switching devices (9) with a height of 2 to 12 height units can optionally be placed on the carrier (1). 8. System according to one of the preceding claims, characterized in that the carrier (1) has a double arrangement of switching contacts (2, 11). 9. System according to claim 8, characterized in that the switching contacts (2, 11) are arranged in two rows one above the other. 10. System according to one of the preceding claims, characterized in that control contacts are provided on the carrier (1) and that the control contacts of the carrier (1) can be connected to the control counter contacts of the switch cabinet for testing purposes when the switching contacts (2, 11) are separated from the counter contacts.