MTP Series Switching Mode Power SupplyPower range: 20 ~ 40KWVoltage
range: 50 ~ 1000VCurrent range: 20 ~ 800A10U / 19-inch standard
chassisPrecise voltage and current setting and measurement
capabilitiesLine voltage drop remote sensing &compensation
function.OVP, OCP, OTP and short circuit protections etc.CE
certifiedOverviewMTP 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 diagramFeaturesIsolated 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.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, four - wire +
GNDVoltage380V±10%Frequency50Hz/60Hz±5HzOutputRated power**
kWOutput voltage adjusting range0V ~ ****VOutput current adjusting
range0A ~ ***AOutput 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 button
controlRemoteRS485 communication interface.In line with MODBUS-RTU
standard.Display modeLED digital displaySet & Display
errorVoltage0.5%FSCurrent0.5%FSDisplay resolutionVoltageFour-digit
display with a minimum resolution of 0.01V(Ue ≤ 30V)Four-digit
display with a minimum resolution of 0.1V(30V < Ue <
1000V)Four-digit display with a minimum resolution of 1V(Ue ≥
1000V)CurrentFour-digit display with a minimum resolution of
0.01A(Ie ≤ 50A)Four-digit display with a minimum resolution of
0.1A (50A < Ie < 1000A)Four-digit display with a minimum
resolution of 1A(Ie ≥ 1000A)Automatic voltage compensation≤5V (Ue ≤
100V)≤10V (100V < Ue ≤ 300V)≤15V (300V < Ue ≤
1000V)Over-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 functionsOutput 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≤65dBProtection 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)500*450*550 (19'' 10U standard chassis)FunctionsWorking
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 regulated;
the o
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