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GW Instek GPR-25H30D - 750W Linear D.C. Power Supply

750W Linear D.C. Power Supply

GW Instek

Category : Power Supplies

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Users Manual


The GPR-U Series are single output, 500 to 900W, linear DC power supply. Overload and reverse polarity protection, in addition to the standard OVP/OCP/OTP, protects the GPR-U Series and their load from unexpected conditions. High regulation and low ripple/noise are maintained at 0.01% and < 2mVrms, respectively for CV mode. The GPR-U Series can be ordered with a customized output requirement from voltage rating from 8 to 1000V and current rating from 0.5 to 75A, (under 1kVA available). The GPR-U Series are the ideal lineup for system applications requiring large output capacity or custom-made output settings, such as material testing and product copper plating.


(1) Special order 8 volts to 1000 volts and 0.5 Amps to 75 Amps under 1kVA available.
(2) Rear-Panel Output for GPR-1850HD/3520HD/6015HD

  • 0.01% High Regulation
  • Constant Voltage and Constant Current Operation
  • Low Ripple and Noise
  • Overload and Reverse Polarity Protection
  • 3 1/2 Digits 0.5" LED Display
  • Application for Material and Products Aging
  • Built-In Overvoltage and Overcurrent Tripped Crowbar
  • Ten-Turn Potentiometer

DC Output

Output Volts (V) 0 ~ 250
Output Amps (A) 0 ~ 3

Constant Voltage Operation

Regulation Line regulation ≦ 0.01% + 3mV
Load regulation ≦ 0.01% + 5mV (<10A)
Load regulation ≦ 0.02% + 5mV (≧10A)
Ripple & Noise ≦ 2mVrms (5Hz ~ 1MHz)
Recovery Time ≦ 100μS ( 50% Load change, Minimum load 0.5A )
Output range 0 to rating voltage continuously adjustable

Constant Current Operation

Regulation Line regulation ≦ 0.2% + 3mA
Load regulation ≦ 0.2% + 3mA
Ripple Current ≦ 5mArms (≦ 20A) 
≦ 20mArms (≦ 50A) 
≦ 100mArms (≦ 100A)
Output Range 0 to rating current continuously adjustable


Type 3 1/2 Digits 0.5" LED Display
Accuracy ± ( 0.5% of rdg + 2 digits )


Chassis and Terminal 100MΩ or above (DC 1000V)
Chassis and AC Cord 100MΩ or above (DC 1000V)

Power Source

AC120V±10%, 50/60Hz
( AC 220V or 240V order made)


User manual x 1
Test lead GTL-105 x 1 (≦3A), or
GTL-104 x 1 (≦10A), or 
Not available (>10A or 600V)

Dimensions & Weight

430(W) x 178(H) x 572(D)mm
Approx. 29.5kg

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