150kw High Power Variable DC Power Supply - 500V300A

Product Description

MTP Series Switching DC Power Supply
Power range: 150KW Voltage range: 0 ~ 500.0V Current range: 0 ~ 300.0A 1300*2100*800 industrial cabinet. Precise voltage and current setting and measurement capabilities Line voltage drop remote sensing & compensation function. OVP, OCP, OTP and short circuit protections etc. CE certified
Overview
MTP 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
Features
Isolated 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 functions
Analog 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)
Specifications
Input	Connection mode			Three - phase, three - wire + GND
	Voltage			380V±10%
	Frequency			50Hz/60Hz±5Hz
Output	Rated power			150kW
	Output voltage adjusting range			0V ~ 500.0V
	Output current adjusting range			0A ~ 300.0A
	Output voltage precision			0.5%FS
	Output current precision			0.5%FS
	Line regulation			≤0.2%FS
	Load regulation			≤0.2%FS
	Temperature drift			0.04%FS/ºC
	Time drift			0.3%FS
	Ripple (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 ability			Withstand long-term continual working.
Setting & Display	Control mode		Local	Front panel LCD touch screen.
			Remote	RS485 communication interface. In line with MODBUS-RTU standard.
	Display mode			Touch 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 error		Voltage	0.5%FS
			Current	0.5%FS
	Display resolution		Voltage	Four-digit display with a minimum resolution of 0.1V
			Current	Four-digit display with a minimum resolution of 0.1A
Automatic voltage compensation				≤15V
Over-loading ability				Iout≤1.25 Ie, output shutdown after 600s. Iout≤1.5Ie, output shutdown after 60s. Iout≤2Ie, output shutdown after 5s Iout>2Ie, output shutdown immediately.
Protection & Monitoring functions		Input protection		Input 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 protection		Power supply automatically cuts off output and alarms when the output has short-circuit.
		Automatic voltage compensation protection		Output over compensation protection / compensation line reverse-connected protection
Noise				≤75dB
Protection degree				IP20
Cooling method				Forced air cooling
Safety features		Insulation resistance		≥20MΩ
		Withstand voltage ability		60s test @ 2000VDC, no flash-over or spark-over.
		Grounding inductance resistance		≤100mΩ
Working conditions		Ambient temperature		0ºC~45ºC
		Humidity		10%~90%(non-condensing)
		Height		≤2000m
Size (W*H*D) (mm)				1300*2100*800
Functions
Working modes
The 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 mode Under 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 output current varies with the output voltage value and the customer load resistance. In CC state, the output current is adjustable and regulated, the output voltage varies with the output current value and the customer load resistance.   CV / OC mode Under CV / OC (over current) mode, besides CV function, power supply still has over-current working ability, (OCP is invalid in this mode), detailed parameters as below: 0% ~ 100% rated current value: continuous working with load 100% ~ 125% rated current value: withstand 600s continuous working 125% ~ 150% rated current value: withstand 60s continuous working 150% ~ 200% rated current value: withstand 5s continuous working Power supply automatic protected and stops output when Max. Over-current time exceeded.
LCD touch screen operation / display function
The power supply adopts LCD touch screen for output parameters setting, working status and alarm information monitoring. The LCD screen has memory function which can automatically save the power failure occurrence time and fault phenomenon for easy query in real time. Also, the touch screen has lock screen function, which can automatically lock screen when the operation is not performed for a long time. Thereby preventing the wrong operation from changing the power output state by mistake.
OVP & OCP value setting function
OVP and OCP value could be set via front control interface, power supply could automatically stop output when output voltage or output current exceeds the set protection values. OVP: over voltage protection value. OCP: over current protection value.
Automatic line voltage drop compensation function
Power supply has automatic line voltage drop compensation terminals, connect the terminals to load ends; power supply could automatically detect load end voltage value and make voltage compensation for line voltage drop. Meanwhile, this function could detect if load connection is reverse connected or not.
Input voltage detection function
Power supply has an input voltage detection circuit that generates an alarm and protects the power supply when an abnormality occurs in the input voltage.
Self-discharging function
The power supply has built-in discharging circuit, which would be automatically activated to quickly release the energy stored in the output capacitor after the power supply stops output, so as to prevent personal injury caused by accidently touching the output terminal right after the power supply stops.
Short-circuit protection
The power supply can adapt to two kinds of short-circuit conditions as below: If the power supply has short-circuit before starting output, then power supply can be normally started and running continuously for a long time. If power supply has a sudden short-circuit during running with load, then power supply would automatically stop output and gives sound alarm, LEDs on front panel would display corresponding alarm code.
Emergency stop function
Power supply has emergency stop button for stopping output immediately in case of emergence.
Communication port
Power supply equipped with RS485 communication port for remote control and monitoring via PC.
Analog signal port (optional)
The power supply can be equipped with an external analog signal port via 0 ~ 10V or 4 ~ 20mA signal to realize power supply start / stop control, power supply running / fault status monitoring.
24V interlock circuit (optional)
The power supply can be equipped with 24VDC output interface to build an interlock circuit with external devices.
Reverse energy discharging (optional)
The power supply has automatic reverse energy discharging function, which automatically detects the reverse energy. When the load reverses the energy to the power supply device, the built-in discharging unit would be automatically turned on, and the discharging unit would be automatically turned off after the discharging is completed. The discharging reaction time is less than 1ms.
Key technology introduction
Air duct design
Full-sealing independent "Chimney" type air duct design adopted, the inner circuit uses independent cooling fan to improve the product heat dissipation effect, and the air inlet has dustproof measures, which greatly reduces dust and debris entering the power supply. The radiator and fan can be cleaned and maintained separately The heat dissipation system undergoes rigorous simulation and actual testing, and is designed with reliability in consideration of national standards and enterprise standards to ensure that the device with low temperature rise and long life.
Integrated design
The power circuit adopts integrated design to give better impact resistance and eliminate the output uneven-current problem during full load operation or working with inductive load and rectifying load. This designed structure greatly improves the stability of power supply and prolong the working life of power supply.
Core component
The key and important core devices are all internationally renowned brands, and high-quality devices ensure the stability and reliability of product operation.
Installation environment
Ambient temperature: Please have the power source working in safe temperature range (0ºC ~ 45ºC) or it would affect life of power source. Please install the power source at least 50cm distant from surroundings to have better ventilation. Please install the power source away from vibration (less than 0.6G), especially equipment like puncher. Keep the power source away from direct sunshine, humidity or place with water globule. Keep the power source from corrosive, flammable & explosive gas. Keep the power source away from oil stain, dust & metallic dust.