2025-05-13 11:10:48
Construction and Installation
1.How do I make interface connections?
A. Telephone line; cable RVVP2x1.5, used for communication between telephone and telephone gateway; transmission distance not more than 4 kilometers.
B. Grounding wire: the external grounding row of all equipment in the system should be connected to a special pre-buried ground nearby.
Construction sequence and process
1. Construction preparation
Before construction, according to the construction site, should check the drawings of points, phone installation location, phone installation method can meet the emergency telephone requirements.
2.Equipment Installation Requirements
The installation position should be in accordance with the design requirements.
The installation should be smooth and firm, and should be easy to operate and maintain; in order to ensure the signal strength, refuse to transmit through the wall.
3.Waterproof construction attention
(1) system junction box and transfer box installation equipment, should try to avoid the “outlet hole” towards the installation, in order to prevent leakage caused by blocking the dense
In order to prevent leakage due to poor plugging, caused by strong rainwater backflow;
(2) Unused outlet holes must be plugged with special plugs.
(3) Installation of galvanized pipe joints towards the top should pay attention to sealing, there should be no holes leakage, such as connecting holes are not connected to the place should be plugged with explosion-proof mud.
If there is a connection hole without connection, it should be plugged with explosion-proof mud.
(4) The lock on the panel should be tightened after installation of the telephone to prevent water ingress.
(5) After the installation of the flexible pipe, make sure that the interface of the flexible pipe meets the sealing requirements, in order to prevent water seepage into the flexible pipe.
4.Pipe construction requirements
(1) conduit laying should keep the tube clean and dry, the mouth should be protected and blocking measures;
(2) The open wiring pipe should be horizontal and vertical, neatly arranged;
(3) The open wiring pipe should be fixed with pipe card, and the pipe card should be installed firmly; the pipe card should be set in accordance with the following provisions:
(4) In the terminal, elbow at the midpoint of 150mm ~ 500mm range should be set up pipe card;
(5) In the distance from the box, box, cabinet and other edges of the 150mm ~ 500mm range should be set within the pipe card;
(6) The bending radius of the wire pipe turn should not be less than the minimum allowable bending radius of the cable penetration, and should not be less than the outer diameter of the tube
Diameter of 6 times; when the outer diameter of the concealed pipe is greater than 50mm, should not be less than 10 times;
(7) masonry concealed pipeline depth should not be less than 15mm, cast-in-place concrete slab concealed pipeline depth should not be less than 25mm, side by side.
25mm, parallel laying of the line pipe spacing should not be less than 25mm;
(8) line pipe and control boxes, junction boxes, junction boxes and other connections, should be used to lock the mouth of the pipe fixed firmly;
(9) line pipe through the wall or floor should be installed to protect the casing, casing through the wall should be flush with the wall, through the floor casing mouth
It is desirable to be 10mm ~ 30mm above the floor, the lower port of the casing should be flush with the floor;
(10) and equipment connected to the line pipe leading out of the ground, the mouth of the pipe from the ground should not be less than 200mm; when the introduction of floor-to-ceiling boxes and cabinets from the ground, it is desirable to be higher than the ground.
When introduced from the ground to the floor box, cabinet, it is appropriate to box, cabinet bottom 50mm;
(11) line pipe should be marked at both ends, there should be no obstruction in the pipe, and should be worn with line;
(12) piping in the ceiling, it is appropriate to use a separate support bracket fixed, the support bracket shall not be set up on the keel or other pipes;
(13) galvanized steel pipe should be threaded connection, galvanized steel pipe connection should be used for special grounding wire card fixed jumper, jumper cross-section should not be less than 4mm²
(14）Box, box installation requirements
Steel conduit into the box (box) should be a hole in a pipe, pipe and box (box) connection should be used claw-type threaded joint pipe connection, and should be locked, the inner wall should be smooth for easy threading.And should be locked, the inner wall should be clean for threading;
(15)Laying of cables and wires
Self-control cables are laid indoors in cable ducts or through pipes, and outdoors in pre-embedded pipes or along cable trenches;
Self-control signal cables, power cables are individually laid in protective tubes, laid in the bracket and control cables in special metal trunking.
When the control cable and power supply, power cable laid in the same trough, the middle should be separated by a metal partition; steel cable trunking,
Cable bracket and its fasteners should be hot-dip galvanized and other anti-corrosion treatment.
The terminal cable protection pipe of instrumentation equipment and the cable protection pipe which needs buffering should adopt waterproof and dustproof metal flexible pipe. Electricity
The cable entry point, the end of the conduit, the spare conduit should be blocked. Metal cable trunking and metal conductor protection tube should be reliably grounded.
Bridge installation requirements
1. Anti-corrosion measures should be taken at the cutting and drilling section of the bridge;
2. The bridge should be flat, no twisted deformation, no burr on the inner wall, all kinds of accessories should be installed, the nuts of fasteners should be on the outside of the bridge, the interface of the bridge should be straight and tight, the cover plate should be complete and flat.
Outside of the bridge, the bridge interface should be straight and tight, the cover plate should be complete and flat;
3. Compensation devices should be set up at the deformation joints (including settlement joints, expansion joints, seismic joints, etc.) of the building that the bridge passes through to protect the ground wire and the wires in the bridge.
Ground protection and cable in the bridge should be left to compensate for the margin;
4. Bridge and box, box, cabinet and other connections should be used to hold the foot or flap connection, and should be fixed with screws, the end should be blocked;
5. The distance between the bottom of the horizontal bridge and the ground should not be less than 2.2m, the top from the floor should not be less than 0.3m, and the distance from the beam should not be less than 0.05m, the distance between the bridge and the floor should not be less than 0.3m.
Should not be less than 0.05m, bridge and power cable spacing should not be less than 0.5m;
6. Laying in the shaft and through different fire zones of the bridge and pipeline holes, there should be fire blocking;
7. Elbows, tees and other accessories, it is appropriate to use the finished product produced by the bridge manufacturer, not suitable for on-site processing and production;
8. Metal cable trays and their supports and the introduction or exit of metal cable conduits must be grounded (PE) or connected to zero (PEN)
Reliable, and must comply with the following provisions:
(1) metal cable tray and bracket length should be not less than 2 places and grounding (PE) or zero (PEN) trunk connection;
(2) non-galvanized cable trays connecting the two ends of the board across the wire copper core grounding wire, grounding wire minimum allowable cross-sectional area of not less than
4mm²;
(3) galvanized cable tray connecting plate ends do not cross the grounding wire, but the connecting plate at both ends of not less than 2 have anti-loosening nut or anti-loosening washer connection fixed
Cable laying
1. Before laying cables, check that the specifications, models and positions are in accordance with the design regulations.
2. The cable should be laid straight and should not be twisted or looped, and should not be squeezed or damaged by external forces.
3. The cable is labeled at both ends before laying to show the beginning and terminal position, and the label is written clearly, correctly and correctly.
4. The length of one deployment should not be too long (generally 2km), the wiring from the center to both sides of the traction.
5. Cable towing force is generally not more than 120k
Installation
1. Fix the telephone on the bracket with 4 M8 screws, and then fix the bracket on the wall or column, the height of telephone installation is 1.4 meters.
1. Connection of the telephone to the terminal box by means of a cable winder / Connection of the telephone to the galvanized steel pipe by means of a cable winder
2. Installation method:Wall-mounted Installation/Pillar Installation
More information about the telephone view: weatherproof telephone,Wall-mounted industrial telephone,Explosion-proof Telephone
