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High Quality for Ac Electronic Load - ET37 Series Programmable DC Power Supply – Zhongchuang Featured Image
  • High Quality for Ac Electronic Load - ET37 Series Programmable DC Power Supply – Zhongchuang
  • High Quality for Ac Electronic Load - ET37 Series Programmable DC Power Supply – Zhongchuang
  • High Quality for Ac Electronic Load - ET37 Series Programmable DC Power Supply – Zhongchuang
  • High Quality for Ac Electronic Load - ET37 Series Programmable DC Power Supply – Zhongchuang

High Quality for Ac Electronic Load - ET37 Series Programmable DC Power Supply – Zhongchuang

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High Quality for Ac Electronic Load - ET37 Series Programmable DC Power Supply – Zhongchuang Detail:

User-friendly design:

¤ Using 4.3 inch TFT LCD, the resolution is 480*272.

¤ Support waveform display, real-time display of channel output voltage and current curve.

¤ Operating system is simple and convenient, with intuitive interface display system, easy to use.

High performance output:

¤ Independent adjustable output: 1 (ET372X)/2 (ET373X) adjustable output 30V/3A (30V/5A), 1 (2.5V/3.3V/5V)

adjustable fixed output; maximum total output power can reach 305W.

¤ Four output modes: vertical/positive/negative/parallel/series, providing a wider output range. The maximum output

voltage can reach 60V, and the maximum output current can reach 10A.

¤ High precision and high resolution.

¤ Low output ripple and noise.

¤ It has excellent load regulation rate and linear regulation rate.

¤ Support timing output function, maximum set 112 groups.

¤ It has the function of storage and invocation, and can save up to 10 sets of parameter settings.

¤ Standardized USB Device interface, RS232 interface, support SCPI remote command control.

Multiple security protection:

¤ With over-voltage/over-current protection function, it can flexibly set over-voltage and over-current parameters to

achieve effective load protection.

¤ It has two-level over-temperature protection function, realizing double over-temperature protection of software and

hardware.

¤ It has the function of intelligent fan speed control, adjusts the fan speed according to the working conditions, and

effectively reduces the fan noise.

¤ Connecting and Counter-protection with Output Polarity.

¤ It has key lock function to prevent misoperation.

¤ Power voltage: 220V.AC±10%, 110V.AC±10%, 45~65Hz

¤ Display: 4.3” TFT LCD, with a resolution of 480×272, and 16 M colors

¤ Operating temperature: 0°C-40°C

¤ Storage temperature: -10°C-70°C

¤ Relative humidity: ＜80%

¤ Interface: USB DEVICE, RS232 (optional)

¤ Sizes: 230mm x 380mm x 150mm (WxDxH)

¤ Weight: 11kg

¤ Three core power cord: 1

¤ User manual: 1

¤ Output line: 1

¤ USB data line: 1

¤ RS232 data line: 1

Model

ET3721

ET3728

ET3722

ET3729

ET3731

ET3738

ET3732

ET3739

Maximum power

105W( ET3721、3722)

155W(ET3728、3729)

195W(ET3721、3722)

305W(ET3728、3729)

Channel number

2

(CH1 variable, CH2 fixed)

3

(CH1, CH2 variable, CH3 fixed)

DC output

(0°C-40°C)

Voltage/current

(Rated value)

CH1：0~30V，0~3A(ET3721、3722)

CH1：0~30V，0~5A（ET3728、3729）

CH1、CH2：0~30V，0~3A(ET3721、3722)

CH1、CH2：0~30V,0~5A(ET3728、3729)

Over-voltage/over-current

protection

CH1：10mV~33V，10mA~3.3A

CH1：10mV~33V,10mA~5.5A

CH1、CH2：10mV~33V，10mA~3.3A

CH1、CH2：10mV~33V，10mA~5.5A

2.5V/3.3V/5V

Fixed output

 Current output 0~3A(ET3721、3722、3731、3732)，Or 0~1A（ET3728、3729、3738、3739）;Output precision: ＜5%;Load regulation: ≤15*minimum scale interval;Linear regulation: ≤5*minimum scale interval;Ripple and noise (20Hz~7MHz): ≤2mVrms;

Overload: 3A(ET3721、3722、3731、3732)，or 0~1A（ET3728、3729、3738、3739）;

(Parameters of the fixed position are all listed. The parameters below apply to the variable positions of the voltage.)

Linear regulation rate (±output percentage + quantity of minimum scale interval(s))

Voltage

≤0.01%+2

≤0.005%+2

≤0.01%+2

≤0.005%+2

Current

≤0.01%+3

≤0.005%+3

≤0.01%+3

≤0.005%+3

Load regulation rate (±output percentage + quantity of minimum scale interval(s))

Voltage

≤0.01%+2

≤0.006%+2

≤0.01%+2

≤0.006%+2

Current

≤0.005%+3

≤0.01%+3

≤0.05%+3

≤0.01%+3

Tracking operation (±output percentage + quantity of minimum scale interval(s))

Tracking error

/

≤0.5%+10 of Master（no-load）

Parallel regulation

rate

Linear

/

≤0.01%+5

Load

/

≤0.01%+5

Series regulation rate

Linear

/

≤0.01%+10

Load

/

≤0.02%+10

Ripple and noise (20Hz~-7MHz)

Voltage

≤1mVrms

≤600μVrms

≤1mVrms

≤600μVrms

Current

≤1.5mArms

≤1mArms

≤1.5mArms

≤1mArms

Programming/backward reading resolution

Voltage

1mV

1mV

1mV

1mV

Current

1mA

1mA

1mA

1mA

Programming/backward reading accuracy (±output percentage + quantity of minimum scale interval(s))

Programming

Voltage

0.03%+10

0.02%+5

0.03%+10

0.02%+5

Current

0.3%+10

0.3%+5

0.3%+10

0.3%+5

Backward reading

Voltage

0.03% +10

0.03% +5

0.03% +10

0.03% +5

Current

0.3% +10

0.2% +5

0.3% +10

0.2% +5

Load transient response time

It takes less than 50μs for the output current to change from full load to half load, or from half load to full load and for the output voltage to recover to 15mV.

Stability (±output percentage + quantity of minimum scale interval(s))

Voltage

≤0.02%+10

≤0.02%+10

Current

≤0.1%+1

≤0.1%+1

Temperature coefficient (±output percentage + quantity of minimum scale interval(s))

Voltage

≤0.02%+10

≤0.02%+10

Current

≤0.02%+10

≤0.02%+10

Other

Command processing time

＜200ms

Cooling method

Fan cooling

ET37 Series Programmable DC Power Supply 1
ET37 Series Programmable DC Power Supply 2
ET37 Series Programmable DC Power Supply 3

Product detail pictures:

High Quality for Ac Electronic Load - ET37 Series Programmable DC Power Supply – Zhongchuang detail pictures

High Quality for Ac Electronic Load - ET37 Series Programmable DC Power Supply – Zhongchuang detail pictures

High Quality for Ac Electronic Load - ET37 Series Programmable DC Power Supply – Zhongchuang detail pictures

High Quality for Ac Electronic Load - ET37 Series Programmable DC Power Supply – Zhongchuang detail pictures

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With state-of-the-art technologies and facilities, strict good quality regulate, reasonable cost, exceptional assistance and close co-operation with prospects, we're devoted to supplying the top benefit for our customers for High Quality for Ac Electronic Load - ET37 Series Programmable DC Power Supply – Zhongchuang , The product will supply to all over the world, such as: Seattle, Bulgaria, Belize, Our product quality is one of the major concerns and has been produced to meet the customer's standards. "Customer services and relationship" is another important area which we understand good communication and relationships with our customers is the most significant power to run it as a long term business.
    • The company's products can meet our diverse needs, and the price is cheap, the most important is that the quality is also very nice.
    5 Stars By Jacqueline from UK - 2017.03.28 16:34
    Reasonable price, good attitude of consultation, finally we achieve a win-win situation,a happy cooperation!
    5 Stars By olivier musset from Eindhoven - 2018.02.04 14:13
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