MindMap Gallery Mind map of electrical assembly precautions
Regarding the mind map of electrical assembly precautions, it reminds assembly personnel what should be paid attention to in electrical installation, including cable routing, hub installation, grounding, drag chain, wire trough installation, etc.
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Taiwei-Electrical Assembly Precautions
1. Cable routing
1. Cable ties
1. Cable ties must be black cable ties
2. When bundling multiple cables, please use cable ties with sufficient strength.
3. At the lead-out point of wires, or when fixing thin cables, be sure to let the cable joints and wires be in a loose state, and pull and pull them carefully.
2. Line buckle
1. Please use black cable ties
2. Please install the cable buckle according to the size and quantity of the cables.
3. When laying multiple cables, please use the vanity board method to lay them in parallel.
3. wiring
1. Wiring outside the trunking must not cross
2. The cable is not allowed to be welded before entering the terminal.
3. Multiple cables should be routed in parallel. Please divide them into two sides according to power and signal, and install them flatly.
4. fixed
1. The distance between multi-strand and single-strand cables is 200mm, and there must be a fixed point
2. 300-400 mm in the vertical direction, there must be a fixed point
5. Specification
1. Multiple thin sensor wires connected to the hub need to be protected with winding tubes;
2. Individual wires must be protected with conduit
3. Some signal lines require twisted pairs, please strictly follow the drawings for construction;
4. It is strictly prohibited to use a single wire for long-distance jumpers, short circuits, etc. in the wiring within the equipment.
2. Hub installation
1. The cables from the hub to the drag chain must be highly flexible;
2. The hub access point must be statically wired, and there must be a fixed point near the access point 10CM;
3. There must be a fixed point around 10CM for the hub outlet cable.
4. There should be no shaking, friction, etc. within 10CM of the hub when connecting or connecting wires;
3. ground
1. Specification
1. The branch ground wire must be larger than 2.5 square millimeters
2. The main grounding wire of the electrical control panel must be larger than 6 mm2
2. Install
1. All electrical control panels must be specially grounded to avoid the main grounding stake of the circuit breaker.
3. Precautions
1. Grounding and static ground must be connected independently
2. Both static ground and equipment grounding should have corresponding grounding stakes at the equipment power supply.
3. For static electricity grounding, special grounding introduction points and grounding markings must be used
4. drag chain
1. Drag chain routing
1. Crossing of wiring within the drag chain is strictly prohibited
2. The weights of the cables on both sides of the drag chain should be as close as possible
3. Cables in drag chains should be avoided from being too large or too small.
2. Installation matters
1. No plugs are allowed in the drag chain;
2. No wire welding, short circuiting, etc. are allowed in the drag chain;
3. Separators must be used for more than 3 wires in the drag chain, and separators must be used to separate air pipes and cables.
3. In and out drag chain
1. The incoming and outgoing cables and air pipes of the drag chain must be tightened with double-buckle cable ties;
2. When moving the drag chain cable in and out, avoid the wires being too tight and in a loose state.
5. Trunking installation
1. Trunking installation
1. The two wire trunking interfaces must be connected at a 45° angle;
2. The trunking must have a certain slot area rate of less than 80%
3. The height of the wire trough is 80 mm, and the width is designed according to the number of wires.
4. For the same electrical control panel, the height of the wire trough must be the same
2. Cable routing
1. There must be no extended welding wires in the wire trough;
2. No wires that are too long are allowed in the wire trough. Do not fold the wires in half.
3. If the finished product line is too long, please find a suitable placement point inside the equipment to fix it;
4. When cables or wires enter the trunking, a corresponding safety distance must be reserved.
5. The safe distance between the heating device and the wire trough should be greater than 50 mm
6. Electrical control panel
1. Note on layout
1. Components must be firmly fixed and cannot be loose.
2. If any metal wires are exposed, insulation devices must be used to isolate them;
3. For wire access to all components, be sure to use appropriate terminal blocks, fully considering the load and contact surface.
4. During construction, cutting of wires must be done outside the electrical cabinet;
5. Components need to be laid out according to the layout diagram
2. Signage
1. The signage uses a 6mm yellow label with black text and a text size of 4mm
2. All devices require a device identifier in a visible location
3. Two operating components need to be pasted, one is the identifier and the other is the Chinese function name.
4. The identifier of the terminal strip can be affixed to the electrical control board and located under the terminal strip.
5. Cable identification plates must be implemented in accordance with design specifications.
7. The key components
1. After the installation of key micro-components, please invite engineers to assist in inspection;
2. Assembling key and valuable sensors should be carried out under the guidance of an engineer in the initial stage. If not, please ignore it;
8. Drawing management
1. Two sets of drawings for one assembly model will be recovered after the project is completed;
2. During assembly, after all cables are installed, the exact length needs to be marked on the drawing with a pen;
3. If you do not understand, please contact the responsible engineer as soon as possible