HDV-4D corrosion power system

1. Overview 1.1 Usage HDV-4D corrosion power system is mainly used in areas without AC power to implement impressed current cathodic protection of pipelines, cables, storage tanks and other metal structures or equipment. 1.2 Main Features 1.2.1 uses high-frequency switching power supply technology, and the use of high-precision, low-drift control technology, the potentiostat with energy efficiency, high stability, high precision performance. 1.2.2 interference and lightning performance has greatly improved the reliability of the equipment. 1.2.3 The state has run automatic switching function, when due to external reasons can not be implemented constant potential instrument protection, it will automatically switch to the current value of the pre-set to a constant-current protection. 1.2.4 with self-test function, easy attribution failure. 1.2.5 Structure potentiostat with a preparation of a cast, can achieve automatic failover potentiostat. 1.2.6 with remote data transmission, remote control function, using standard industrial signal-point interface communication or RS-485 interface communications for remote monitoring and control, intelligent management. 2. Technical Specifications and features: 2.1 Environmental conditions Pressure: 60 ~ 120KPa Ambient temperature: -40 ℃ ~ + 50 ℃; Relative Humidity: 15% ~ 90% RH; 2.2 electrical conditions DC power supply: 24V ± 10%, 36V ± 10%, 48V ± 10% 2.3 Safety Performance 2.3.1 Insulation resistance: power input, the cathode, the zero position on the chassis insulation resistance greater than 10 MΩ. 2.3.2 Dielectric strength: the power input, between the chassis can withstand both 500V (RMS) voltage of 50Hz, which lasted one minute, no flashover or breakdown. 2.4 Basic technical performance 2.4.1 Output voltage range: 1% to 100% of rated output current range 2.4.2: 1% to 100% of rated ripple factor 2.4.3: less than 1% at full load 2.4.4 constant potential range : within 0mV ~ -3000mV range continuously adjustable constant potential 2.4.5 Accuracy: control potential and protection potential of error is less than 5mV. 2.4.6 Input impedance: the reference input of the input impedance is greater than 2MΩ. 2.4.7 Anti-hum: 30 V, 50Hz 2.4.8 constant current preset range: 1% to 100% of rated output current 2.4.9 Constant Current accuracy: better than 2% 2.4.10 self-test function: You can not When connecting test equipment outside its working condition, easy to fault identification. 2.4.11 work status automatically switch: When the reference electrode failure due to other reasons can not work and the constant potential lasts more than 20 seconds, the instrument will automatically switch to the constant current work status. 2.4.12 Recovery: restore power after a power interruption, the instrument constant potential default A machine work under the protection of the potential value of the original set. 2.4.13 Parameter Display: The instrument is equipped with high-precision digital meter, which can display the output voltage, output current, protection potential and other parameters, display accuracy of better than 0.5%. 2.4.14 automatic failover: a potentiostat shot a prepared function, when the potentiostat working machine automatically shut down due to a fault, the potentiostat spare machine can automatically put in the work, if the malfunction can be automatically shut down, failover for a non-repeatable process. 2.5 Performance 2.5.1 overcurrent protection: When the output current exceeds the rating of 115% ~ 125%, the instrument automatically cut off the output current. When the reason for the elimination of over-current, the instrument automatically resume output. 2.5.2 undervoltage protection: When the supply voltage drops below the rated input voltage of 87.5%, the instrument automatically stop working; when the supply voltage has risen to 93% the amount of input voltage, the instrument automatically return to work. 2.5.3 Overheat protection: When the instrument due to external causes of the internal temperature exceeds a predetermined value, the instrument automatically stops the output. 2.5.4 Lightning Protection: The instrument inputs, the output has lightning protection. 2.6 telemetry remote control function 2.6.1 Instrument point connection RTU, can perform the following functions 2.6.1.1 power failure test function: optional instrument in the internal or remote control test status, power test mode, the instrument state in the intermittent output : through the 12s off 3s, the on / off clock error is less than 0.1 ‰. Power-off test interface input level is + 24V high. When the interface input high, the instrument is working in an intermittent condition is low, the instrument is working in a normal output state. Interface isolation voltage ≥500V. 2.6.1.2 potential of remote control functions: protection potential by remote control to select the control value, a value of the instrument itself for potential control set, a remote control for the potential value. Potential remote control interface input 4 ~ 20mA standard industrial signal, when the signal is less than 3mA, potential control setpoint value of the instrument itself, when the signal is greater than 3.8mA, the value of potential control switch for remote control values. 4 ~ 20mA signal isolation converted to 0 ~ 3000mV potential control value, conversion accuracy of better than 0.3%, isolation voltage ≥500V. 2.6.1.3 remote control switch functions: open from the instrument panel to select the potentiostat A or B or shutdown, remote control can also be turned on A or B or shutdown. Instrument consists of three interfaces are open to accept A machine, a B machine, shut down signal. Remote control switch input interface 24V positive pulse signal, the pulse width is not narrower than one second, the interface isolation voltage ≥500V. 2.6.1.4 remote output voltage signal: the output voltage value (0 ~ rated) into standard industrial signal (4 ~ 20mA), conversion accuracy of better than 1%, the interface load is less than 600Ω, interface isolation voltage ≥500V. 2.6.1.5 Remote output current signal: the output current value (0 ~ rated) into standard industrial signal (4 ~ 20mA), conversion accuracy of better than 1%, the interface load is less than 600Ω, interface isolation voltage ≥500V. 2.6.1.6 protection potential signal remote: the protection potential value (0 ~ 3000mV) is converted into standard industrial signal (4 ~ 20mA), conversion accuracy of better than 1%, the interface load is less than 600Ω, interface isolation voltage ≥500V. 2.6.1.7 A (B) signal remote machine is running: Run signal interface contact signal output, "+", "-" end closure for A (B) turn signal, "+", "-" end open for A (B) shutdown signal. 2.6.2 RS-485 interface can be connected to a computer, using the Modbus communication protocol or custom communication protocols, can perform the following functions: 2.6.2.1 remote control off test 2.6.2.2 2.6.2.3 remote control to adjust the protection potential A remote control to open the machine , B or shut down output voltage parameters 2.6.2.5 2.6.2.4 upload upload upload the output current parameters 2.6.2.6 2.6.2.7 uploaded protection potential parameters constant potential operational status (A or B running running or shut down) 2.7 shell and coated chassis with a thickness greater than 1.5 mm cold-rolled steel sheet forming, surface electrostatic spray anti-corrosion treatment, protection class IP42. 2.8 Specifications Power Specifications (battery nominal voltage) Rated output voltage Rated output current 24V ± 10% 18V, 24V, 36V 10A 36V ± 10% 18V, 24V, 36V, 48V 15A 48V ± 10% 18V, 24V, 36V, 48V , 60V 20A 2.9 Dimensions (mm): High 1400 (mm) × width 620 (mm) × depth 680 (mm)