150V 120kw Precision Switching Power Supply

MTP Series High Power Switching DC Power SupplyPower range: 120KWVoltage range: 0 ~ 150.0VCurrent range: 0 ~ 800.0A1300*2100*800 industrial cabinet.Precise voltage and current setting and measurement capabilitiesLine voltage drop remote sensing & compensation function.OVP, OCP, OTP and short circuit protections etc.CE certified  OverviewMTP series high-precision DC test power supply adopts full-bridge phase-shift soft-switching technology, high output efficiency and small size; it has two-stage conversion circuit structure and double closed-loop control circuit system to ensure power supply with high stability and good output precision.It can meet the testing needs of power electronics industry, electronic device industry, new energy motor industry and power battery industry.Block diagram FeaturesIsolated input and output for safe operation.CV & CC output mode, output voltage and current continuously adjustable in full scale.Multi-stage filtering circuit adopted to reduce harmonic interference to the power grid.Double closed-loop circuit, fast response speed and stable output.Full-bridge phase-shifting soft switching technology, the overall efficiency is up to 88%.With RS485 communication interface, in line with MODBUS-RTU communication protocol.With LCD touch screen for convenient operation, intuitive displays & indications.Amorphous high-frequency transformers and potted inductance adopted to give smaller temperature rise and better reliability.The input and output terminals are equipped with safety shielding to ensure the safety of installation.Optional functionsAnalog control via 0 ~ 5V / 0 ~ 10V or 4mA ~ 20mA signal. (+AC)Output power-limiting function (+PL)Built-in automatic energy discharging unit (+EDU)24V interlock circuit (+ILK)Parallel-connection function (+PC)SpecificationsInputConnection modeThree - phase, three - wire + GNDVoltage380V±10%Frequency50Hz/60Hz±5HzOutputRated power120kWOutput voltage adjusting range0V ~ 150.0VOutput current adjusting range0A ~ 800.0AOutput voltage precision0.5%FSOutput current precision0.5%FSLine regulation≤0.2%FSLoad regulation≤0.2%FSTemperature drift0.04%FS/ºCTime drift0.3%FSRipple (Vr.m.s.)≤0.5% F.S (measured @ rated voltage with 80%-100% resistive loading)Response time≤20ms (measured @ 10%-90% resistive loading)Efficiency≥88% (measured @ 80%-100% resistive loading)Working abilityWithstand long-term continual working.Setting & DisplayControl modeLocalFront panel LCD touch screen.RemoteRS485 communication interface.In line with MODBUS-RTU standard.Display modeTouch screen display items as below:Real-time working state display (fault state, running state, stop state, emergency stop state)Working mode display (CV / CC)Output voltage / current display.Power supply system and fault information queriable.Set & Display errorVoltage0.5%FSCurrent0.5%FSDisplay resolutionVoltageFour-digit display with a minimum resolution of 0.1VCurrentFour-digit display with a minimum resolution of 0.1AAutomatic voltage compensation≤10VOver-loading abilityIout≤1.25 Ie, output shutdown after 600s.Iout≤1.5Ie, output shutdown after 60s.Iout≤2Ie, output shutdown after 5sIout>2Ie, output shutdown immediately.Protection & Monitoring functionsInput protectionInput lack voltage and lack phase protection.Output over voltage protection (OVP)Output over voltage protection value settable.Power supply automatically cuts off output and alarms when output has over voltage.Output over current protection (OCP)Output over current protection value settable.Power supply automatically cuts off output and alarms when the output has over current.Over temperature protection (OTP)Power supply automatically cuts off output and alarms when the internal temperature of the power supply exceeds 85 °C.Output short-circuit protectionPower supply automatically cuts off output and alarms when the output has short-circuit.Automatic voltage compensation protectionOutput over compensation protection / compensation line reverse-connected protectionNoise≤75dBProtection degreeIP20Cooling methodForced air coolingSafety featuresInsulation resistance≥20MΩWithstand voltage ability60s test @ 2000VDC, no flash-over or spark-over.Grounding inductance resistance≤100mΩWorking conditionsAmbient temperature0ºC~45ºCHumidity10%~90%(non-condensing)Height≤2000mSize (W*H*D) (mm)1300*2100*800FunctionsWorking modesThe power supply has two working modes: CV / CC mode and CV / OC mode, customers can select different working modes according to actual use requirements.CV / CC modeUnder CV / CC mode, the output voltage and current of power supply are continuously adjustable from 0 to the rated value. Power supply works either in constant voltage (CV) or constant current (CC) state, the CV & CC working state are automatically switchable, the switching conditions are determined by the voltage & current set values and the customer's load resistance value. For details, please refer to the following figure.In CV state, the output voltage is adjustable and