GF303B Three phase phantom load electric portable power source

electric portable power source

GF303B three phase portable power source is a powerful and portable three phase current and voltage source All test values are generated absolutely synthetically with a high degree of accuracy and stability. It is high precision three phase energy meter calibration phantom load power source. GF303B uses the advanced synchronous sampling technology and electronic power amplifier components. The test equipment can generate sine-wave voltage/current and phantom power to drive energy meter testing. It is suitable for all the power engineering service company, electric power company distribution network automation departments, is also suitable for petrochemical, coal mine, railway and steel industry etc, to power automation departments use in the laboratory or on site.



  • The fastest verification;
  • Phase shift can be setting output by user;
  • Meeting ISO17025 electrical laboratory standard;
  • Testing point optional 1.0, 0.5C, 0.8C, 0.5L, 0.8L etc;
  • Voltage output range from 0 to 300V, current from 0 to 6A;
  • Lightweight portable: the integrated module, weighing 6.8 kg;
  • As a three phase voltage source, also as a three phase current source;
  • Harmonic supreme: standard source can output 2-63 times higher harmonic;
  • Output fastest (10 ms): by high performance 32bit CPU, the frequency of 1.2G;
  • Stability is the best, stability for 0.01% / min; English or Chinese menu display;
  • Powerful Software, the operation is simple, convenient, three steps can complete verification;
  • Debugging far move communication protocols, as many as 20 types, covering domestic all factories statute;
  • Stable fastest (1s): hardware PID, the output of the standard power source without delay, fast response;
  • With the strongest load, load regulation rate fast, single phase with resistance sex load 15 VA; with pure capacitive load (0.33 uf);
  • Two kinds of frequency output: but at the same time points in different frequency voltage output, and amplitude can adjust arbitrarily output;


  • Universities;
  • Energy meter R & D;
  • Energy meter factory;
  • AMI Research institutes;
  • Panel meter manufacturers;
  • Power meter manufacturers;
  • Electrical testing center;
  • National Metrology center;
  • Digital meter manufacturers;
  • Pointer meter manufacturers;
  • Railway electrical department;
  • ISO17025 Electrical laboratory;
  • Measurement and control device factory;
  • Power engineering commissioning company;
  • Electricity power bureau & power company;
  • Manufacturer of reactive power compensation device;
  • Electrical Department of industrial and mining enterprises;


Electrical parameters 
Accuracy class  0.05%, 0.1%
Power supply Single phase AC 85V-265V, 50/60 Hz
Communication Port RS232, USB
AC Voltage output 
Range (U1, U2, U3 phase) 0-300V
Adjustment resolution 0.01%, 0.1%, 1%, 10%
Accuracy 0.05% RG
Stability 0.01% RG / 1 min
Distortion degree Better than 0.1% (not capacitive load)
Load Capacity 15VA
Full load regulation rate 0.02% RG
Full load regulation time Less than 1mS
Temperature drift 16 PPM/°C
Long-term stability 60 PPM/year
AC Current output 
Range (I1, I2, I3 phase) 0-6A
Adjustment resolution 0.01%, 0.1%, 1%, 10%
Accuracy 0.05% RG
Stability 0.01% RG/1min
Distortion degree Better than 0.1% (not capacitive load)
Load capacity 15VA
Full load regulation rate 0.02% RG
Full load regulation time Less than 1mS
Temperature drift 16 PPM/°C
Long-term stability 60 PPM/year
Power output 
Active power accuracy 0.05%
Reactive power accuracy 0.1%
Stability 0.01% RG/1min
Range 0°-359.99°
Adjustment resolution 0.01°, 0.1°, 1°, 10°
Accuracy 0.05°
Power factor   
Adjusting range -1 ~ 0 ~ + 1
Resolution 0.0001
Accuracy 0.0005
Range 40-65 Hz
Adjustment resolution 0.001 Hz, 0.01 Hz, 0.1 Hz, 1Hz
Accuracy 0.002 Hz
Temperature drift 0.5 PPM/°C 
Long-term stability 4 PPM/year
Harmonic content (compared with fundamental wave)
Voltage ≤40%
Current ≤40%
Phase 0°-360°
Harmonic times 2-50
Adjustment resolution 0.1% (compared with fundamental wave)
Communication Port RS232
Programmable controlled Yes
Harmonic Yes
Wiring mode 3P4W, 3P3W, 1P2W
Key 40pcs
LCD 6 inch blue LCD
PC control software Optional
Standard IEC 62053-21,22, 23; IEC 60736; ANSI C12.20-2002;
JJG 597-2005; JJG596-2012; JJG 1085-2013; JJF 68-2019;
DL/T 826-2002; DL/T 1478-2015; DL/T 448-2016; JJG 51-1999;
DL/T 2213.1-2021; GJB J 5857-2006; JJG6-2011; JJG70-2015;
Isolation protection IEC 61010-1:2001
Measurement Category 300 V CAT III, 600 V CAT II
Degree of protection IP20
Declaration of conformity CE & CNAS certified
Mechanical parameters 
Dimensions (W×D×H) (mm) 300x400x120
Weight (kg) 6.8
Environmental conditions 
Working  temperature 0°C to 50°C  
Storage conditions -30°C  to 60°C 
Relative humidity ≤85%

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