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OEM/ODM China Programmable Dc Load - ET37 Series Programmable DC Power Supply – Zhongchuang Featured Image
  • OEM/ODM China Programmable Dc Load - ET37 Series Programmable DC Power Supply – Zhongchuang
  • OEM/ODM China Programmable Dc Load - ET37 Series Programmable DC Power Supply – Zhongchuang
  • OEM/ODM China Programmable Dc Load - ET37 Series Programmable DC Power Supply – Zhongchuang
  • OEM/ODM China Programmable Dc Load - ET37 Series Programmable DC Power Supply – Zhongchuang

OEM/ODM China Programmable Dc Load - ET37 Series Programmable DC Power Supply – Zhongchuang

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Our pursuit and firm aim should be to "Always fulfill our buyer requirements". We carry on to produce and structure top-quality excellent solutions for equally our aged and new consumers and accomplish a win-win prospect for our consumers as well as us for Portable Electronic Thermometer, Ac Dc Programmable Load, Calibration Instrument For Infrared, We are one of the largest 100% manufacturers in China. Many large trading companies import products from us, so we can give you the best price with the same quality if you are interested in us.
OEM/ODM China Programmable Dc 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:

OEM/ODM China Programmable Dc Load - ET37 Series Programmable DC Power Supply – Zhongchuang detail pictures

OEM/ODM China Programmable Dc Load - ET37 Series Programmable DC Power Supply – Zhongchuang detail pictures

OEM/ODM China Programmable Dc Load - ET37 Series Programmable DC Power Supply – Zhongchuang detail pictures

OEM/ODM China Programmable Dc Load - ET37 Series Programmable DC Power Supply – Zhongchuang detail pictures

Related Product Guide:
Innovation, quality and reliability are the core values of our company. These principles today more than ever form the basis of our success as an internationally active mid-size company for OEM/ODM China Programmable Dc Load - ET37 Series Programmable DC Power Supply – Zhongchuang , The product will supply to all over the world, such as: Honduras, Oman, Brunei, We now have been making our goods for more than 20 years . Mainly do wholesale , so we've the most competitive price , but highest quality. For the past years , we got very good feedbacks , not only because we offer good solutions , but also because of our good after-sale service . We are here waiting for yourself for your inquiry.
    • The customer service staff's attitude is very sincere and the reply is timely and very detailed, this is very helpful for our deal,thank you.
    5 Stars By Diana from Sheffield - 2017.11.11 11:41
    High Quality, High Efficiency, Creative and Integrity, worth having long-term cooperation! Looking forward to the future cooperation!
    5 Stars By Princess from Kenya - 2018.10.01 14:14
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