JKWF Low-voltage Reactive Power Compensation cont

We professional manufacture of reactive power compensation controller in China, has 11 years of product experience,and the compensation controller detailed information as follows: All-digital design, Chinese large screen LCD liquid-crystal display, modular assembly , the appearance streamline design with RS-485 standard bus interface , support the MODBUS communication protocal, apply to sets of intelligent power distribution cabine , smart box change date capture , reative compensation , L1 L2 L3 phase voltage , current , power factor , active power , reactive power , harmonic voltages ,harmonic currents , frequency , parameters of electrical . the reactive compenssation has 12 routes , and support of three-phase , spilt phase, three phase &single phase reactive power control scheme , sampling physical quality of reactive power , the sample method isAC sampling . Technical Parameter Environmental requirement Height:≤2500m Operating temperature -20°C +60°C Storage temperature -25°C +70°C Operating in the environment of no corrosive gas, no conductive dust and no explosive and flammable medium. The Installation site should be no violent vibration and erosion of snow and rain Measured data Measuring voltage 100V 500V Measuring current 0 6000A Sensitivity 120mA(twice) Power Supply 220V±20% Frequency 47 53Hz display active power 0 6553Kw display reactive power 0 6553 Kvar Total Harmonic voltage Distortion rate 0.0 100.0% Total Harmonic current Distortion rate 0.0 100.0% the version number 2.0 or 4.2(the upgrade version number of device) Input/Output signal Sampling voltage L1,L2,L3 phase voltage Sampling current the bus current L1,L2,L3 phase of current transformer twice 0 5A . Control output The electric relay stem node 5A/250V Resistive (static) 12V 300mV/ branch road ( dynamic) Sampling voltage isn't the same as the current sampling Display performance The LCD Digital data display refresh cycle≤1s The data of communication interface the communication interface RS-485 agreement MODBUS communication agreement communication rate 4800 38400bps(no parity bit) Measuring accuracy voltage ±0.5% active power ±1.0% current ±0.5% reactive power ±1.0% power factor ±1.0% frequency ±0. 1Hz The statistics above is getting by 10 minutes' preheating of controller and calibration within one year. Setting data voltage ±0.5% active power ±1.0% current ±0.5% reactive power ±1.0% power factor ±1.0% frequency ±0. 1Hz The statistics above is getting by 10 minutes' preheating of controller and calibration within one year. Setting data Rated transformation ratio 01 1200(ratio ) Delay Time:5s 100s(static) 0.1s 30s(dynamic) Target COSφ lag 0.90 ahead 1.00 step length 0.01 Overvoltage setting 230V 290V or close Under voltage setting 180V 200V or close On limit: 0.5 1.2 (the setting value is input threshold ) step length 0.1 Off limit=1.2-current setting Harmonic protection Hv 0.0% 50.0% (0.0% is close the protection item ) Hi 0.0% 100.0% (0.0% is close the protection item ) The group of phase compensation capacitor setting 0 4(means every phase of groups) The group of three phases compensation capacitor setting : 0 12 The capacitor allocation : phase * 3 + three phase ≤12 The capacitance preference 0 999Kvar/ group ID number hid device has communication interface ,and support MODBUS agreement ,this item include ID number and the communication rate setting of 485 communication interface , the ID number is used to stated the ID number 001 255 on the net system , the communication rate is 4800 38400bps . Reliability Mean Time Between Failures(MTBF) > 25000 hours