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Article 2.0.4 If power cables and related materials are not installed immediately, they shall be stored according to the following requirements: I. Cables shall be stored in a centralized and classified manner, and the model, voltage, specification and length shall be indicated. There shall be channels between cable trays. The foundation shall be solid. When limited by conditions, the plate shall be padded, and the storage place shall be free of water. 2、 The porcelain bushing of cable terminal is
Published on: July 27, 2016 Clicks: 160
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Closed fault: short circuit to ground, broken wire, or their mixture, single phase, two phase or three phase fault. For example, if there is only ground signal when the power cable fails in operation, it may be a single-phase ground fault; In case of overcurrent tripping of relay protection, two-phase or three-phase short circuit or mixed fault of short circuit and grounding may occur. Passed preliminary
Published on: July 27, 2016 Number of hits: 156
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Equipment operation and maintenance management system
Published on: July 27, 2016 Clicks: 139
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Side tracking of cable fault. After the failure of equipment in the cable industry such as new energy cables, the general side tracking steps are as follows: (1) Determine the nature of the fault. According to the phenomenon when the fault occurs and some simple tests, preliminarily judge the nature of the fault, determine whether the fault resistance is high resistance or low resistance, flashover or others. Chapter I General Provisions
Published on: July 27, 2016 Clicks: 126
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3、 After the cable line is installed and before it is put into operation, the construction engineering shall complete the decoration work of the construction engineering caused by the need of embedded parts supplement, opening, expanding, etc. Article 1.0.9 Steel fasteners used for installation of cables and accessories shall be hot-dip galvanized products except for anchor bolts. Section 1.0
Published on: July 27, 2016 Number of hits: 133
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The laying and installation of new energy cables shall be inspected according to the following requirements during acceptance: 1. The cable specifications shall meet the requirements; Orderly arranged without mechanical damage; The signboard shall be installed completely, correctly and clearly. 2、 Fixation, bending radius, relevant distance of cable and metal sheath of single core power cable
Published on: July 27, 2016 Number of hits: 178
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1. Power cables shall be laid in closed cable channels such as tunnels, trenches, shallow trenches, shafts, and mezzanine layers. Heating pipelines shall not be arranged, and pipelines with flammable gases or liquids shall not cross. Cables laid in explosive gas hazardous areas shall comply with the following requirements: 1. Cables shall be far away from the explosion release source within the possible range and laid in places with low explosion risk
Published on: July 27, 2016 Number of hits: 176
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The new energy cable manufacturer shares with you that the cable laying should follow the general regulations, specifications and general provisions. The cable path selection should comply with the following provisions: 1 The cable should be protected from mechanical external forces, overheating, corrosion and other hazards. 2 Under the condition of meeting safety requirements, the shortest cable path shall be ensured. 3 It shall be convenient for laying and maintenance&
Published on: July 27, 2016 Number of hits: 180
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Overview of power cable The insulated cable that can safely and reliably transmit large capacity power for a long time is called "power cable". The use of power cables comes into being with the generation of electricity. In 1879, the American inventor Edison wrapped jute on a copper rod and threaded it into an iron pipe, then filled it with asphalt mixture to make a cable, and laid the cable in New York
Published on: July 27, 2016 Clicks: 145
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When the new energy cable manufacturer shares with you the connection between the two ends of the cable and other electrical equipment, it needs a connection device that can meet certain insulation and sealing requirements. This device is called cable terminal. The cable terminal head can be divided into indoor head and outdoor head according to the different use occasions. The device that connects several cables to form a longer cable line is called the middle head. Connect the above power
Published on: July 27, 2016 Number of hits: 184
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Precautions for locomotive cable line operation (1) Do not overload or overheat for a long time. Therefore, the monitoring of cable load current, external temperature and joint temperature should not be ignored; (2) The cable line feeder protection shall not be put into reclosing. Most of the cable line faults are permanent faults. If the reclosing action is taken, the accident will inevitably expand and threaten the power grid
Published on: July 27, 2016 Number of hits: 174
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Operation and maintenance of power cables The operation of power cable lines is one of the important links in power production. The safety of cable line operation is related to the safety of enterprise production and the safety of people's lives and property. Based on years of work experience, the author briefly introduces the relevant issues in the operation and maintenance of power cables. Characteristic electricity of cable line
Published on: July 27, 2016 Clicks: 147
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