Side tracking of cable fault, New energy cable After the equipment in the cable industry fails, 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
Article 1.0.1 This specification is formulated to ensure the construction quality of cable line installation, promote the improvement of cable line construction technology and ensure the safe operation of cable line.
Article 1.0.2 This specification is applicable to 500kV and below power cable Construction and acceptance of control cable line installation works. The installation of cable lines with special requirements in mines, ships, metallurgy, chemical industry, etc. shall also comply with the relevant provisions of professional regulations.
Article 1.0.3 The installation of cable lines shall be carried out according to the approved design.
Article 1.0.4 The transportation and storage of cables and their accessories shall meet the requirements of this specification. When the product has special requirements, it shall meet the requirements of the product.
Article 1.0.5 The storage period of cables and their accessories before installation shall be one year or less. When long-term storage is required, special regulations on equipment storage shall be met.
The cables and accessories used in Article 1.0.6 shall comply with the provisions of the current national technical standards, and shall have qualification certificates. The equipment shall have nameplate.
Article 1.0.7 The safety technical measures during construction shall comply with the provisions of this specification and the current safety technical standards and product technical documents. For important construction projects or processes, safety technical measures shall be formulated in advance.
Article 1.0.8 Construction of construction works related to cable line installation shall meet the following requirements:
1、 The construction quality of buildings and structures related to cable line installation shall comply with the relevant provisions of the current national construction and acceptance specifications for construction projects.
2、 Before the installation of cable lines, the construction works shall meet the following conditions:
1. The embedded parts shall meet the design and be firmly placed;
2. The floor and plastering work at cable trench, tunnel, shaft and manhole are completed;
3. The temporary construction facilities, formwork and construction waste at the cable layer, cable trench, tunnel, etc. shall be cleaned up, the construction road shall be unblocked, and the cover plate shall be complete;
4. After the cable line is laid, the construction work that can no longer be carried out shall be completed; 5. The cable trench drainage is smooth, and the doors and windows of the power cable room have been installed.
