Connection bar for the machines, why it is needed and how to properly use

In carrying out the assembly of distribution boards, it is often necessary to connect the circuit breakers in parallel using jumpers. If you make a jumper observing all the rules, such a compound is safe and durable. The disadvantage is a continuous jumble of wires, which can even be confusing. The only way to relieve the shield from the wires, is the use of special tires (combs), of which we discuss in this article.

Content

What connecting bus (comb)

design Features

Varieties tooth comb

Pros and cons of such a product

the connection algorithm

conclusion

What connecting bus (comb)

Coupling tire for machines or simply put a comb, is a plate of copper alloy, which is packaged in a plastic body made of non-combustible plastic material. From this plate extend pins (teeth) that have a protective plastic casing (as they are inserted into the machine terminals). The shape of these outgoing pins can be L-shaped or U- shaped. In this case a copper plate with the teeth is a monolithic structure, which is very easy to pull out of the protective casing.

design Features

These combs are available in single-pole, two-pole, three-pole and four-pole versions, even. Let's look at them in more detail.

pole execution

Thus, the single-pole comb performance is a single copper plate having teeth disposed via a predetermined distance.

pole execution

In such a connecting bus will have two copper plates, in which the distance between the teeth is greater. The teeth of the second plate are curved so as to constitute a single line with the teeth of the first plate.

Increasing the distance between the comb teeth of the bipolar due to the fact that they are used for connecting machine which uses a combination of L + N, and L1 + L2, so the teeth are required to be arranged through one.

The three-pole and chetryrehpolyusnye comb rather exotic product and are used very rarely, so treat them makes no sense.

Varieties tooth comb

Connecting bus sold by the number of teeth: 12, 24, 36, 48, 60 or more. Wherein a distance of 1.8 cm between them. Moreover, these teeth may be in the form of a pin (PIN) Or in the form of a fork (FORK).

The most common product is a comb-type contacts PINSince they are suitable for all types and brands of existing machines, but the comb contacts FORK requires a special connector to the machine because it is not a standard terminal block. Such contacts are using brand-name firms.

Pros and cons of such a product

Let's now look at all the positive and negative aspects of the use of this product and will start with the pros:

Pros connecting bus

1. Basically connection bars are designed for a standard current of 63 Ampere (which with the head missing for the majority of equipment to be connected), but there are buses and 100 amperes.

2. The use of such tire contact ensures better quality, since only one terminal clamps the contact (except for the first terminal, which is introduced from the power line by using PIN tires and FORK tire devoid of this disadvantage)

3. The use of such tires will offload shield from unnecessary wires, making installation more accurate.

Now let's look at disadvantages of such products

1. Sometimes it is impossible to connect the automatic production of various companies due to the fact that they have different installation dimensions and pin can not reach trite clamping contact.

2. If necessary, the replacement of one machine will require removal of the entire comb, so how to get the machine with Din-rail on the other simply will not work.

3. If you need to add another machine, then you need to either install a new rail (longer length) or use a jumper that reduces the reliability of the contact and spoils the aesthetic appearance. Yes, and also require the installation of de-energizing the whole panel, as will still have to completely attenuate the comb.

the connection algorithm

Now let's consider the algorithm to connect machines with a comb:

So, for example, we need to connect the machine with the help of four male (PIN) Comb. To take out this copper plate and cut it with a hacksaw metal. A plastic part cut with a margin of 1 cm (in order to close a part of the copper which would be energized).

Further re-connect the copper part of the comb with a protective plastic and assembled comb inserted into machines and simply tighten with the inserted supply cable.

If you have machines with additional contacts where to insert the comb with pins such as FORK, then the connection is even easier. Cut the comb to the desired length to us, and then insert it into a dedicated slot, and tighten and tighten the supply cord in your terminal:

If you need to connect the RCD or differential machine, the use of single-pole combs are invalid because its use will lead to the fact that we Jumper phase and neutral to each other. In this case, you need to use a two-pole comb.

In such a comb pins go through one, then there is a step between the combs is a standard module.

Cutting also occurs as described above, but the first manifold at planting phase RCD, and the second on the same Zero RCD.

Further there is a broach contacts, connect the power supply wires and insulation end combs.

conclusion

As you can see, the use of such a device speeds up and simplifies installation in the distribution board, which is a clear and significant advantage. If the article was useful to you, then place the thumbs up.

Thank you for your attention!