(1). Representation method of power cable1. Cable type representationIn order to accurately indicate the purpose, structure type and name of the cable. The cable is usually marked on the outer layer of the cable, including structure, materials, etc. For example: 0.6/1kV cable CU/XLPE/PVC 3X95mm2.(2). Classification of power cablesPower cables are g...
First, the nameThe KVV cable is the full name of the PVC insulated PVC sheathed control cable. The KVV cable “K” represents the control cable RVV cable is the PVC insulated PVC sheathed flexible cable, while the RVV cable “R” represents the “R”. A soft cable, so one called a control cable is called a soft cable.Second, the structure KVV cable is composed...
1. Under the eaves. The standard LAN cable can be used only when the cable is not directly exposed to sunlight or high temperature. It is recommended to use the pipe. Ultraviolet (UV)--Do not apply UV-free cables to direct sunlight.2. The outer wall. Avoid direct sunlight on the wall and human damage. Heat - The temperature of the cable in metal pipes or trunki...
Power cable test, found abnormal processing time.The cable channels are kept dry to prevent the power cable from getting wet, causing insulation to drop and causing a short circuit.Regular cleaning of power cables is the accumulation of dust, preventing the spontaneous combustion of dust from causing fire, cable products.Strengthen the switch and pro...
The advantage of the overhead line is that the simple structure, the convenient installation, the smaller investment, the large transmission capacity, the heat dissipation condition is good, and the maintenance is convenient. Good mechanical and electrical properties of overhead line cables. At present, overhead lines account for a large pro...
China Energy News - China Energy Network | Recently, the power companies in the US public utilities sector have successively announced the 2018 annual report. Although the industry financial report data has not changed significantly, and the indicators have remained basically stable, but the executives of the US power companies They are not satisfied w...
In order to ensure the control cable in the event of insulation breakdown, mechanical damage or fire, reduce the scope of the protection: dual protection of the current, voltage and DC power supply and trip control loop and other two systems that need to enhance reliability, should be independent Control Cable.After the control cable in operation, betwee...
The control cable should be protected from damage due to insulation damage, mechanical damage, fire or electrical interference. Dual-protected currents, voltages, and systems that require enhanced reliability, such as DC power supplies and trip control loops, should use separate control cables. In the following cases, the same control cable should...
