1. The trough is flat without distortion, the inner wall has no burrs, the joints are tight and straight, and all kinds of Accessories are complete.
2. The connection of the cable trough should be flat, the joints should be tight and straight, the trough cover should be flat, no warp angle, and the outlet port is in the correct position.
3. When the trunking passes through the deformation joint, the trunking itself should be disconnected. The connecting cable is connected in the trunking. It should not be fixed. The protective grounding wire should have a compensation margin. One wire bolt is fixed below the CT300*100 and Hengdan. Two bolts must be fixed above CT400*100.
4. All non-conductive parts of non-metal trunking should be connected and bridged accordingly to make it a whole and make an overall connection.
5. The cable troughs laid in the shaft and the troughs passing through different fire zones shall be provided with fire barriers according to the design requirements.
6. The length of the steel wire trough at the straight end exceeds 30m plus the expansion joint, and the cable trough is provided with a compensation device across the deformation joint.
7. The length of the metal cable trunking and its bracket should be no less than 2 and connected to the ground (PE) or zero (PEN) trunk.
8. The two ends of the connecting plate between the non-galvanized cable ducts are connected to the copper core grounding wire. The minimum allowable cross-sectional area of ​​the grounding wire is not less than BVR-4 mm.
9. The two ends of the connecting plate between the galvanized cable ducts do not cross the grounding wire, but the two ends of the connecting plate are not less than two connecting fixing bolts with anti-loose nuts or anti-loose washers.
2. The connection of the cable trough should be flat, the joints should be tight and straight, the trough cover should be flat, no warp angle, and the outlet port is in the correct position.
3. When the trunking passes through the deformation joint, the trunking itself should be disconnected. The connecting cable is connected in the trunking. It should not be fixed. The protective grounding wire should have a compensation margin. One wire bolt is fixed below the CT300*100 and Hengdan. Two bolts must be fixed above CT400*100.
4. All non-conductive parts of non-metal trunking should be connected and bridged accordingly to make it a whole and make an overall connection.
5. The cable troughs laid in the shaft and the troughs passing through different fire zones shall be provided with fire barriers according to the design requirements.
6. The length of the steel wire trough at the straight end exceeds 30m plus the expansion joint, and the cable trough is provided with a compensation device across the deformation joint.
7. The length of the metal cable trunking and its bracket should be no less than 2 and connected to the ground (PE) or zero (PEN) trunk.
8. The two ends of the connecting plate between the non-galvanized cable ducts are connected to the copper core grounding wire. The minimum allowable cross-sectional area of ​​the grounding wire is not less than BVR-4 mm.
9. The two ends of the connecting plate between the galvanized cable ducts do not cross the grounding wire, but the two ends of the connecting plate are not less than two connecting fixing bolts with anti-loose nuts or anti-loose washers.
Glass tubes are mainly cylindrical hollow-wares. Their special shape combined with the huge variety of glass types (like borosilicate, flint or quartz glass), allows the use of glass tubing in many applications. For example, laboratory glassware, lighting applications, solar thermal systems and pharmaceutical packaging .
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Changchun Realpoo Photoelectric Co., Ltd. , https://www.optics-realpoo.com