Wuhan Leichuang OD-WRJ45S/212V 2-in-1 Lightning Protection Device Manufacturer
The higher the accuracy level of the instrument (i.e. the smaller the numerical value), the more accurate the measurement results. The higher the accuracy of the instrument, the more expensive the price, and the more troublesome the maintenance. Therefore, the accuracy level of the instrument should be determined according to the requirements of the tested object and should be coordinated with the accuracy level of the transformer. The values and measurement circuits of electrical measuring instruments must meet the requirements of voltage and current transformer errors, that is, after the voltage coil of the instrument is connected to the secondary side of the voltage transformer, the total load capacity of the voltage transformer cannot exceed the capacity at the corresponding accuracy level; After the instrument current coil is connected in series to the secondary side of the current transformer, the secondary load impedance of the current transformer cannot exceed its allowable impedance value, otherwise the measurement error will increase.


The OD network 2-in-1 lightning arrester is developed and designed based on national and industry lightning protection standards, as well as the company's years of lightning protection design experience. It adopts an integrated surge protection design for the power supply and network transmission of cameras used in monitoring systems, balancing the potential of various lines. Can effectively prevent lightning surges from inducing overvoltage and damaging equipment in power and network twisted pair cables; Integrated design, reasonable layout, convenient wiring, overall aesthetics, and strong practicality. The rail type network two in one lightning protection device is an integrated multifunctional surge protector. The product is installed in a 35mm rail type, with a small volume and compact appearance, especially suitable for places without installation space. It has beautiful appearance, excellent product performance, fast transmission speed, and can provide lightning protection for camera power+network signals, or POE cameras separately. It is mainly protected through power lines (220V, 24V, 12V+RJ45 network lines)
Wuhan Leichuang OD-WRJ45S/212V 2-in-1 Lightning Protection Device Manufacturer
A newly established small-scale machinery manufacturing factory. The TN-C system is powered by a three-phase four wire system, and all equipment casings are connected to neutral. As shown in Figure a. During normal production, the equipment casing may feel electric shock. Sometimes, a dark red color is tested with a measuring pen, and a 110 volt ground test with a multimeter is performed to check the contact and insulation of the circuit, ruling out the possibility of single-phase grounding. Removing the neutral wire connected to the casing does not result in any electric shock sensation. After a period of observation, it was found that when using an electric welding machine, the electric shock is severe, and there is almost no feeling when it is not turned on. The factory uses multiple old Bx series iron core transformers (two-phase 380V) welding machines. In a three-phase four wire power supply system, if the three-phase load is unbalanced, there will be unbalanced current flowing through the neutral line. At the neutral point grounding of the transformer, the potential is zero, and as the power supply distance increases, the potential rises.


Product features: 1. The monitoring lightning arrester adopts multi-level protection, with large current capacity and low residual voltage; 2. The power supply part of the monitoring lightning arrester adopts differential mode and common mode full protection methods, with good protection effect; 3. Energy saving, environmentally friendly, easy to connect, and convenient to install; 4. Nanosecond response speed; 5. Integrated structure, small size, complete functions