All kinds of products are bound to have some use problems. If processing is the key, what about Anhui Tiankang?
There are mainly the following reasons for the problem of forming cable joints:
(1) Engagement of hardware contact surfaces to deal with safety. Regardless of whether the terminal is still receiving, due to the influence of production and storage, there are impurities, burrs or oxide layers, especially the appearance of aluminum is very simple to generate a strong and insulating oxide layer. Only by eliminating these defects can we ensure the technical quality of the cable connector.
(2) Conductor damage. The strength of the stripping and cutting cable insulation layer is large, and sometimes it is simply sawed with a hacksaw. Generally, it is not good to damage the conductor. This kind of damage does not look serious, but it will increase when the core is bent, and the cross section will decrease to add heat.
(3) When the conductors are connected, the core is not in place. When the conductor is connected, the requirement of insulation stripping length is 5 mm deep for the crimped metal fitting hole, otherwise, the end of the wire will form an empty space, and the heating will be added only by the tight wall thickness conduction.
(4) Conductor bonding pressure is not enough. Some pressure clamp die can not meet, so that the quality of crimping is difficult to ensure.
(5) The cable connector is struck by lightning. Some cable joints are equipped with lightning arresters at the end, forming a cable joint by lightning strike blasting. Often measuring the temperature at the lead-out point of a cable connector is a useful way to check the quality of the contact, usually using an infrared thermometer.
Cable grounding and short-circuit cause of doubt Caused by cable grounding, the supply voltage will produce abnormalities and excessive power loss. In the event of a short circuit, the power supply will be suspended and the electrical equipment can be burned. The reasons for the attacks are:
(1) Underground soil wounds damage insulation. Preventive measures: Mechanical construction cannot be used when there is a cable underground in the construction area, and a useful maintenance method must be adopted when moving the soil.
(2) Cable selection is irrational, overload or overheating, dynamic heat is not stable, causing insulation damage and short circuit. Preventive measures: Select cables according to the rules to prevent overloaded operation and obtain technical data.
(3) The cable is short circuited by a vehicle, etc. Preventive measures: cable and railroads, roads, buildings, foundations, ditch, etc. should be added with cable maintenance pipe at the crossover and upper pole and central joint number. The inner diameter of the maintenance pipe is greater than 1.5 times the diameter of the cable. The length of the pipe should extend two meters away from the railway and the road surface.
(4) Mechanical damage. If it is oversupplied, it will be subjected to excessive tension due to its sinking. Preventive measures: Adopt protective measures for risk areas.
(5) Overvoltage damage. Breakdown of cable insulation due to lightning or other overvoltage. Preventive measures: installation of lightning arresters and perfect grounding methods.
If you want to know more about wires and cables, please contact Anhui Tiankang!
There are mainly the following reasons for the problem of forming cable joints:
(1) Engagement of hardware contact surfaces to deal with safety. Regardless of whether the terminal is still receiving, due to the influence of production and storage, there are impurities, burrs or oxide layers, especially the appearance of aluminum is very simple to generate a strong and insulating oxide layer. Only by eliminating these defects can we ensure the technical quality of the cable connector.
(2) Conductor damage. The strength of the stripping and cutting cable insulation layer is large, and sometimes it is simply sawed with a hacksaw. Generally, it is not good to damage the conductor. This kind of damage does not look serious, but it will increase when the core is bent, and the cross section will decrease to add heat.
(3) When the conductors are connected, the core is not in place. When the conductor is connected, the requirement of insulation stripping length is 5 mm deep for the crimped metal fitting hole, otherwise, the end of the wire will form an empty space, and the heating will be added only by the tight wall thickness conduction.
(4) Conductor bonding pressure is not enough. Some pressure clamp die can not meet, so that the quality of crimping is difficult to ensure.
(5) The cable connector is struck by lightning. Some cable joints are equipped with lightning arresters at the end, forming a cable joint by lightning strike blasting. Often measuring the temperature at the lead-out point of a cable connector is a useful way to check the quality of the contact, usually using an infrared thermometer.
Cable grounding and short-circuit cause of doubt Caused by cable grounding, the supply voltage will produce abnormalities and excessive power loss. In the event of a short circuit, the power supply will be suspended and the electrical equipment can be burned. The reasons for the attacks are:
(1) Underground soil wounds damage insulation. Preventive measures: Mechanical construction cannot be used when there is a cable underground in the construction area, and a useful maintenance method must be adopted when moving the soil.
(2) Cable selection is irrational, overload or overheating, dynamic heat is not stable, causing insulation damage and short circuit. Preventive measures: Select cables according to the rules to prevent overloaded operation and obtain technical data.
(3) The cable is short circuited by a vehicle, etc. Preventive measures: cable and railroads, roads, buildings, foundations, ditch, etc. should be added with cable maintenance pipe at the crossover and upper pole and central joint number. The inner diameter of the maintenance pipe is greater than 1.5 times the diameter of the cable. The length of the pipe should extend two meters away from the railway and the road surface.
(4) Mechanical damage. If it is oversupplied, it will be subjected to excessive tension due to its sinking. Preventive measures: Adopt protective measures for risk areas.
(5) Overvoltage damage. Breakdown of cable insulation due to lightning or other overvoltage. Preventive measures: installation of lightning arresters and perfect grounding methods.
If you want to know more about wires and cables, please contact Anhui Tiankang!
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