2U DC power supply

0-20V / 0-50A/60A / upto 1500VA (1U Type)



20VDC series product is a switching mode single-channel output high-precision programmable DC power supply. It can meet various demands for the application of DC power supply with stable DC output and built-in voltage & current measurement capability.

Areas of Application:
●  Automobile Sector: Used for automobile electronics product testing,and simulation of the voltage waveform of automobile under different conditions.
●  LED Sector: Used for LED driver and LED product testing and burn-in test.
●  Automatic Testing Sector: Can be integrated in automatic testing system to test electricity  parameters, and to supply power to the products under testing.
●  Medical Field:Used for medical device testing or it being integrated in medical equipment.
●  Communication Sector: Used for the tests of communication power supply and electronic devices.
●  Household Field:Used for household products test.
●  Scientific Research Sector:Used in scientific research units, colleges & universities,and certification institutions for laboratory testing and power supply.
●  Aerospace Sector: Used for aviation electronic products testing and power supply.

Product Features:
●  With accurate voltage and current measurement capability.
●  Coded knobs, multifunctional keyboard.
●  Standrad RS232/LAN/RS485/USB interface.
●  Remote sensing to compensate for voltage drop in load leads.
●  DVM independent measurement functions.
●  Function of editing List waveform.
●  Use SCPI commands.
●  CE certified.


Product Advantages:
(1)High efficiency
APM programmable 20VDC source has an operating efficiency of up to 85%. In the circuit design, switch tube is using zero (0) voltage conductor and when the circuit is running, the damage inflicted on the device itself is reduced, and subsequently increase the overall efficiency while lowering the rate of temperature rise of the DC source. Compare with other similar types of product in markets, APM Technologies’ programmable DC source has an obvious advantage.

(2)Ultrafast Respond Time

The unique fast drop function makes the response of APM programmable DC source much better than that of any other similar products available on the market.

 No load voltage rise time:≤10ms
 Full load voltage rise time:≤10ms
 No load voltage drop time:≤150ms
 Full load voltage drop time:≤12ms

(3)DVM measurement function
APM programmable DC source’s built-in DVM independent measurement function can measure the value of output voltage at the output terminal, and display the value at VFD screen by switchover the front-panel buttons. The DC source can also be used as external equipment in laboratory testing to measure the voltage values.

(4)Master/Slave Control
In the master-slave control mode, up to 4 units of APM programmable DC source can be used in a series or parallel mode.
Master-slave control mode can realize the effect as “a hundred responses to a (single) call”. Once the master-slave mode is settled, “SLAVE” will be locked in the main interface and exclusively controlled by “MASTER”. When there is a “SLAVE” signaling of protection mode, all the DC sources will turn off and exit master-slave mode.

(5)Simple series/parallel output
When users require high output power, APM programmable 20 VDC source can achieve the output power by using up to 10 programmable DC sources in a series or parallel mode.

(6)Series Mode Functions
APM programmable 20 VDC source via its RS485 interface can be operated in a series mode by using up to 31 units of the device ,thus makes it possible to simultaneously control all the DC sources connected on RS485 from PC.

Outline dimension drawing:
Outline dimensions (W*H*D) = 483.0mm*44.0mm*531.0 mm



  Mode  SP20VDC600W  SP20VDC800W  SP20VDC1000W  SP20VDC1200W
 1  Input Voltage Range  90-265VAC
 2  Input Frequency Range  47-63HZ
 3  Power Factor  >0.98
 4  Input Power  750VA(MAX)  1000VA(MAX)  1300VA(MAX)  1500VA(MAX)
 5  Output Voltage Range  0-20V  
 6  Output Current Range  0-50A  0-60A
 7  Voltage Load Regulation  10mV
 8  Current Load Regulation  50mA  60mA
 9  Voltage Setting Accuracy  0.05%+15mV
 10  Current Setting Accuracy  0.1%+50mA  0.1%+60mA
 11  Voltage Measurement Accuracy  0.05%+15mV
 12  Current Measurement Accuracy  0.1%+50mA  0.1%+60mA
 13  Voltage Ripple[1]  40mVp-p/6mVrms
 14  Current Ripple[1]  50mA (Full Range)
20mA (TYP value)
 60mA (Full Range)
20mA (TYP value)
 15  Voltage Temperature Coefficient[2]  100ppm/℃
 16  Current Temperature Coefficient[2]  150ppm/℃
 17  DVM Resolution  0.1mV
 18  DVM Accuracy  0.05%+15mV
 19  Remote Compensation  4V MAX
 20  Load Transient Response Time  ≤2ms
 21  Command Response Time  50ms
 22  Efficiency(Full Load)  85%  84%
 23  Protection Function  OVP/OCP/OTP/OPP/SCP
 24  Weight  9.2kg
 25  Communication Modes  RS232/RS485/USB/LAN
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