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The DC24V power supply provides isolated distribution power for the transmitter in the field, and transmits the current signal generated by the transmitter from the field isolation to the control room, PLC, DCS, etc.Input interface current source, two wire system, three wire system transmitter universal; The internal use of efficient magnetoelectric isolation technology, input, output, power supply are isolated from each other, with high precision, high linearity, low temperature drift and other characteristics. DIN rail independent mounting method....
The current transmitter converts the AC signal from the AC transformer into a standard process signal, which is used for DCS central monitoring of the motor, pump or heat network, monitoring the power supply line and its current. Input, output, power three ports high reliable isolation....
Panel type short-circuit grounding fault indicator is divided into A and B two types, B type with signal remote transmission function. With the extensive use of loop switchgear and cable branch box in power grid, the problem of how to find the cable fault section in time becomes more and more prominent. The fault indicator can quickly and accurately indicate the fault part, greatly saving the time to find the fault part, reducing the power failure time and power failure range, and improving the reliability of power supply.Panel type short circuit and ground fault indicator is installed on the 10KV-35KV distribution ring switchgear and cable branch box, used to indicate the corresponding cable section of the interphase short circuit and single phase ground fault....
Current transformer (CT) is widely used in primary measurement, control and protection in power system. In normal operation, the secondary side is in an approximate short-circuit state, and the output voltage is very low, but in operation, if the secondary winding is open, or the primary winding flows through abnormal current (such as lightning current, resonant overcurrent, capacitor charging current, inductor starting current, etc.), thousands of volts or even tens of thousands of volts of overvoltage will be generated on the secondary side, which not only causes harm to the secondary system insulation, but also causes harm to the secondary system. Even endanger the life safety of the staff. The CTB series current transformer secondary overvoltage protector produced by our company is designed for this situation, which can effectively prevent accidents caused by CT secondary open circuit....
The front end of the surge protector loop must be in series. The backup protector required by the manufacturer must be installed. Because current fuses and MCBS cannot work with SPD, when the power supply is abnormal or SPD deteriorates and fails, the device is damaged by lightning, and the normal operation is seriously affectedThe SPD special external backup protector is connected in series on the SPD circuit, and the internal current sorting channel device is used to realize the small power frequency current flow rate break. High current lightning impact does not trip. To achieve the power frequency small current SPD fire protection, lightning impact SPD continuous protection; SCB products should only be used for SPD return current protection, or backup current protection should not be used in other situations....
Surge protector, also known as lightning arrester, lightning arrester, is an electronic device that provides safety protection for various electronic equipment, instruments, communication lines, and low-voltage electrical lines. It is suitable for AC 50/60Hz, rated voltage 380V power supply system or photovoltaic system, to protect the indirect lightning and direct lightning impact or other instantaneous overvoltage surge, to meet the surge protection requirements of household, tertiary industry and industrial fields, with relative phase, relative ground, relative midline, midline to ground and its combination protection mode....
We will provide you with a reliable lightning risk assessment service based on Lightning Protection Part 2: Risk Management.There are four categories:Risk R1, risk of personal injury and loss; Risk R2, risk of loss of public services; Risk R3, risk of loss of cultural heritage; Risk R4, risk of loss of economic value.We can issue risk analysis and assessment reports according to the characteristics and use of the building, which helps customers choose more economical protection measures within the scope of risk control.Faster: Complete report within three working days, more than 300% of the industry averageStronger: not only does it have complete risk analysis data, but also points out risk items and avoidance suggestions in the reportMore accurate, the use of lightning risk assessment system, accurate calculation of lightning interception area and other parameters, so that the risk is nowhere to hide....
Make full use of core iot technologies such as big data, smart sensors, wireless transmission and remote control to improve existing lightning protection facilities and protect the effective operation of the power supply system.The main contents include:1, by collecting the remote switch signal of the surge protector, real-time monitoring of its working status, improve the safety of lightning protection.2, achieve unattended, reduce operation and maintenance costs.3. Record historical events for easy analysis and optimization of system protection....