Tonghui TH6741 switching DC power supply.TH6741 can simulate battery output with its programmable internal resistor. For instance, a battery supplies power to a device, the applied voltage drops as it passes through the battery's internal resistance. With TH6700 series power supply, the internal resistance can be simulated by setting values, thus causing the output voltage to drop. can be connected to 2 or 4-terminal measurement from the rear panel. The 4-terminal measurement has the remote compensation function, which compensates the pressure drop from the power supply to the parts to be tested.TH6741 is equipped with abundant interfaces, such as USB HOST, USB DEVICE, LAN, RS232, and analog control interface. The CV/CC mode controlled by external voltage and external resistance is implemented through analog control interface.  In series or in parallel operation is realized through analog control interface. It also supports external voltage or external resistance to control the instrument output.

■ Rated Output: 800V/1.32A/360W

■ Wide range, and constant power output

■ High efficiency and high power density

■ Programmable internal resistance, designed for battery output simulation

■ Constant current (CC) priority mode, prevent overshoot for LED power supply

■ Master-slave series and parallel operation

■ 24-bit 4.3-inch color LCD display

■ Numeric keyboard operation

■ Voltage and current adjustment with knob

■ Timed output (0-3600.0s)

■ programmable voltage or current rising time

■ RS232, USB HOST, USB DEVICE, LAN, and analog control interface

TH6741 is a single channel output, wide range programmable switch mode DC power supply, with three output powers of 360W, 720W, and 1080W. Users are able to realize 2 master-slave in series or 3 master-slave in parallel connection, to achieve the requirements of higher voltage and higher current output.

TH6741 is designed with adjustable slope function that allows users to set the rise time and fall time of current and voltage output. When testing lighting devices and large capacitors, inrush current will be generated as soon as the output is turned on, which severely shortens the lifetime of the tested parts. In this case, the slope function ensures the voltage transmission is smooth and slow at the switching moment which prevents the tested parts from being damaged.

TH6741 CV/CC priority mode protects the tested parts well. The traditional power supply in CV mode will instantly bring a large surge current to the capacitive load while turning on the output. TH6700 series power supply can run in CC mode at the start of output, which avoids sudden peak current and protects the device from being damaged by surge current.

Parameter		TH6741	TH6742	TH6743
Rated Output	Rated Power	360W	720W	1080W
	Max Power	Rated output *105%
	Rated Voltage	0-800V
	Max Voltage	840V
	Rated Current	1.32A	2.64A	3.96A
	Max Current	1.44A	2.88A	4.32A
Setting	Voltage Range	0-840V
	Current Range	0-1.44A	0-2.884A	0-4.32A
Load Regulation	Voltage	≤405mV
	Current	≤6.44mA	≤7.88mA	≤9.32mA
Line Regulation	Voltage	≤403mV
	Current	≤6.44mA	≤7.88mA	≤9.32mA
Set Value Resolution	Voltage	100mV
	Current	1mA	1mA	1mA
Readback Value Resolution	Voltage	100mV
	Current	1mA	1mA	1mA
Set Value Accuracy (25℃±5℃)	Voltage (>0.1V)	≤0.1%+400mV
	Current (>0.1A)	≤0.1%+2mA	≤0.1%+4mA	≤0.1%+6mA
Readback Value Accuracy (25℃±5℃)	Voltage (>0.1V)	≤0.1%+400mV
	Current (>0.1A)	≤0.1%+2mA	≤0.1%+4mA	≤0.1%+6mA
Ripple and Noise (20Hz-2MHz)	Differential Mode Voltage	≤150mVp-p and 30mVrms	≤200mVp-p and 30mVrms	≤200mVp-p and 30mVrms
	Differential Mode Current	≤5mArms	≤10mArms	≤15mArms
Dynamic Recovery Time (50%-100% Load) Load Frequency =100Hz		≤2ms
Rise Time (Full Load)	10%-90%	≤150ms
Rise Time (No Load)	10%-90%	≤150ms
Drop Time (Full Load)	90%-10%	≤300ms
Drop Time (No Load)	90%-10%	≤2000ms
Timer	Setting Range	0-9999999 (Hour, Minute, Second)
Start Delay	Setting Range	0-99.99s
Stop Delay	Setting Range	0-99.99s
Slope Setting	Voltage Rise	1-1600V/s
	Voltage Drop	1-1600V/s
	Current Rise	0.001-2.88A/s	0.001-5.76A/s	0.001-8.64A/s
	Current Drop	0.001-2.88A/s	0.001-5.76A/s	0.001-8.64A/s
Analog Internal Resistance	Setting Range	0-555.5Ω	0-277.8Ω	0-185.1Ω
External Voltage Control (25℃±5℃)	CV Accuracy	Rated Output Voltage±0.5%
	CC Accuracy	Rated Output Current±1%
External resistance control (25℃±5℃)	CV Accuracy	Rated Output Voltage±1.5%
	CC Accuracy	Rated Output Current±1.5%
Power Factor	100VAC (Full Load)	0.99
	200VAC (Full Load)	0.97
Efficient	100VAC (Full Load)	78%
	200VAC (Full Load)	80%
Master-Slave Control	Master-Slave Parallel	3 Sets including the mater tester
	Master-Slave Series	Not Available
Protection	OVP	20-880V
	Accuracy	±2% Rated Output Voltage
	OCP	0.144-1.512A	0.288-3.024A	0.432-4.536A
	Accuracy	±2% Rated Output Current
	OTP	Internal Temperature Rise Determines
Size and Weight	Overall Size (mm)	215(W)×146(H)×420(D)
	Shelf Size (mm)	215(W)×132(H)×420(D)
	Net Weight	3kg	5.3kg	7.5kg
Power Supply		88-265VAC，50/60Hz

Note: Power regulation rate (88-132VAC or 170-265VAC, constant load).
Load regulation rate (no load - full load, constant input voltage).
Rise time (10%-90% of rated output voltage, with rated resistive load)
Drop time (90%-10% of rated output voltage, with rated resistive load)
Dynamic recovery time (when the load changes from 50% to 100% of the rated output current, the time for the output voltage to recover within the range of 0.1%+10mV of the rated output)