How much is the cross distance between the power trunking and the power trunking

The power tray and the instrument tray can be laid side by side at the same level, and there is no special provision for the spacing during laying, as long as it is convenient to operate.

1. Under normal circumstances, the instrument wiring groove is laid on the upper layer of the pipe gallery, or on the same layer as the process pipeline and the electrical wiring duct, which is generally not lower than the process pipeline.

2. The static distance between the instrument assembly groove and the equipment with strong electric field and strong magnetic field should be greater than 600mm, and the parallel distance between the instrument assembly groove and the power line should be greater than 500mm.

It can be side by side, up and down, and the distance is to check the specification.

In fact, there is another way to walk in the same bridge, and it is OK to add a partition in the middle!

Can be in the same row. The spacing is greater than 400mm

See "Code for Construction and Acceptance of Automation Instrument Engineering".

Laying of cables and wires.

The ambient temperature when laying the instrument cable should not be lower than the following temperature values:

1 plastic insulated cable 0 ;

2 rubber insulated cable-15.

The laying of cables should be reasonably arranged and should not be crossed; When laying, it should be avoided between cables and between cables and other hard objects.

friction between them; When fixing, the tightness should be appropriate.

The bending radius of a plastic-insulated, rubber-insulated multi-core control cable should not be less than 10 times its outer diameter. Electricity.

The bending radius of the cable shall conform to the current national standard "Code for the Construction and Acceptance of Cable Lines in Electrical Installation Engineering".

GB50168-92.

When the instrument cable and the power cable are cross-layed, it should be at a right angle; When laid in parallel, the distance between them should be.

Comply with the design documents.

In the cable trough, the AC power supply line and the instrument signal line should be separated by metal partitions.

When the cable is laid along the bracket, it should be tied and fixed to prevent the cable from loosening.

The net distance between the instrument signal line laid in the open and the electrical equipment with a strong magnetic field and a strong electrostatic field should be large.

In; When using shielded cables or wearing metal protective pipes and laying in metal cable troughs with covers, it should be greater than.

When the cable is laid in a tunnel or trench, it should be laid on a bracket or in a cable trough.

I helped you check the GB 50093-2002 which did not clearly say what the specific interval is, it was said that it was determined according to the requirements of the design documents, I think it may depend on how much V the electrical electricity is used, there is a reference material below, you can check it.

This general requirement is that the vertical is not less than 150mm, and the horizontal is not less than 200mm.

Generally, the parallel spacing of pipes is crossed.

The communication cable and the power cable should be separated, and should be separated from the wiring groove, plus or groove. It can be crossed, but not parallel.

There are provisions in the civil regulations.

All are 150mm in a closed trunking

1) The cable tray and trunking should be laid in a short and short direction, and should be laid along the wall, along the column or along the beam as far as possible.

2) According to the cable tray and trunking laying direction, to the civil engineering profession, the structure profession proposed to reserve the wall hole, floor hole and hanger installation, so.

The position and load of the steel plate need to be embedded. And it should be coordinated with the technology profession, the plumbing profession and the power profession.

3) The concealed metal trunking wiring in the ground should be closely coordinated with the civil engineering profession in the design, so as to reasonably determine the line path and equipment selection according to different structural types and building layouts.

4) Cables with different voltages and different purposes should not be laid in the same layer of cable trays

1) Cables above 1kV and 1kV and below;

2) Dual-circuit cable with the same path supplying power to the primary load;

3) Cables for emergency lighting and other lighting;

4) Power, control and telecommunications cables. If different grades of cables are laid in the same cable tray, a partition should be added to isolate the middle.

5) When the installation or maintenance under engineering conditions does not need to consider the additional concentrated load, the work of the cable ladder frame and tray is evenly distributed according to the weight of the cable.

Evenly distributed calculations.

6) The requirement for the installation of the cable tray in the engineering design is that the cable tray should not be laid in parallel with the following pipes, and when it cannot be avoided, the cable tray is unavoidable.

The location should comply with the following regulations, or take appropriate protective measures.

1) The cable tray should be above the pipe with corrosive liquid.

2) The cable tray should be under the thermal pipe.

3) When the flammable and explosive gas is heavier than air, the cable tray should be above the pipeline.

4) When flammable and explosive gases are lighter than air, the cable tray should be under the pipeline.

7) The minimum distance between the cable tray and the pipeline is shown in the relevant standards.

8) The necessary distance should be maintained between the integrated wiring cable and the nearby electrical equipment such as motors and power transformers that may generate high-level electromagnetic interference. The spacing between the integrated wiring cable and the power cable shall comply with the provisions of GB T 50311-2000 specification.

9) The spacing between the integrated wiring cables, optical cables and pipelines laid on the wall and other pipelines shall comply with the provisions of GB T 50311-2000 specification.

10) When the cable tray is laid horizontally, it is advisable to select the best span according to the load curve for support, and the span is generally. Vertical laying.