GF111B Single Phase Reference Energy Meter With 120a Clamp On Cts

single phase reference meter

GF111B single phase reference energy meter with 120a clamp on cts is the latest product launched by our company after extensive visits to users and drawing on the advantages of similar products at domestic and abroad. The measurement part of the product adopts high-speed A/D converter and DSP for digital processing technology, which greatly improves the accuracy and stability of measurement.


The central processing part adopts 32-bit ARM embedded technology, which makes the instrument have novel interface, rich functions, clear and simple operation and stable performance. it has not only advantages of light weight, portable structure, high precision, high performance, powerful function, original interface, ease-to-use, but also work stability. It can measure U, I, P, Q, S, E, frequency, power factor, phase shift, harmonics etc. Accuracy class: 0.04.
The GF111B portable single phase reference meter can be widely used in fields of electric energy measuring, electric metrological laboratories and other relevant industry, not only in laboratories but also at the industrial field.


  • AMI design center;
  • Energy meter R & D;
  • Electrical laboratory;
  • Watt-hour meter factory;
  • Metrological service center;
  • Electricity meter manufacturers;
  • Laboratories of power utilities;
  • Power engineering service company;
  • Electricity power bureau & power company;
  • National Metrology and testing department;
  • Electrical Department of industrial and mining enterprises;


  • Vector diagram function;
  • Waveform display function;
  • Measuring 2nd~51st harmonics;
  • 7 inch TFT color LCD display;
  • 0-576V, 1mA-120A, 40-70.000Hz;
  • High accuracy class up to 0.04%;
  • Energy register testing function;
  • Metal structure, strong and reliable;
  • Phase shift precision less than 0.02°;
  • Auto testing single phase meter error;
  • Multi range, automatic range switching;
  • Suit for testing in the lab and on site;
  • High stability 0.005%/min, high reliability;
  • Programmable pulse constant output up to 250000;
  • Current measurement with direct and clamp on ct;
  • 5A, 10A, 20A, 100A, 200A, 300A, 500A, 1000A, 3000A, 5000A optional;


Electrical parameters
Accuracy class 0.04%, 0.05%, 0.1%
Power supply 45-450V AC, 50/60Hz
Power consumption 10VA
Voltage measurement
Range 0-576.000V
Error ±0.02% (40V-560V)
±0.05% (5V-40V)
Harmonic 2nd- 51st
Current measurement(direct)t
Range (direct connection) 1mA-30.000A or 1mA-120.000A
Error (direct connection) ±0.02% (25mA-30A)
±0.04% (1mA-25mA)
Harmonic 2nd- 51st
Clamp on ct (indirect)
Range (Standard) 1mA-120.000A
Error (Standard) ±0.04% (100mA-120A)
±0.1% (1mA-100mA)
Harmonic 2nd- 51st
Clamp on ct optional 5A, 10A, 20A, 100A, 200A, 300A, 500A, 1000A, 3000A, 5000A
Power measurement error
Active power ±0.04% (0.01A-30A)
±0.1% (0.001A-0.01A)
Reactive power ±0.1% (0.001A-30A)
Energy measurement error
Active energy ±0.04% (0.01A-30A)
±0.1% (0.001A-0.01A)
Reactive energy ±0.1% (0.001A-30A)
Phase angle
Range 0°-360.000°
Resolution 0.005°
Error ±0.02°
Power factor
Range -1.00000-0-1.00000
Resolution 0.0005
Error 0.0001
Range 40.0000-70.0000Hz
Resolution 0.0005
Error ±0.001
Pulse output
Output channel 1
Energy constant 1-9999999
Pulse ratio 1:1
Output level 5V
Output rated frequency 60KHz, max 86.4KHz
Pulse input
Input channel 1
Input level 5-24V or 3-12V
Input frequency Max. 2MHz
LCD Display 7 inch 800x480 pixel touch TFT
Vector diagram Yes
Waveform Yes
Key 18PCS
Energy accumulation Yes
Self-calibration Yes
Data storage Yes
PC software Optional
Communication port RS232 & USB
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; GB/T 33708-2017
Isolation protection IEC 61010-1:2001
Measurement Category 300 V CAT III, 600 V CAT II
Degree of protection IP65
Declaration of conformity CE & CNAS certified
Mechanical parameters
Dimensions (W×D×H) (mm) 365 x 269 x 151
Weight (kg) 3
Environmental conditions
Ambient temperature 0°C to 40°C
Storage temperature -20°C to +65°C
Relative humidity 10%-85%
Temperature coefficient ≤0.0005% /℃
Influence of external fields ≤0.05 %/mT

Selection guide

NO. Accuracy Voltage range Current Range Weight
111B1201 0.1% 0-576V 0-120A 4KG
111B12005 0.05% 0-576V 0-120A 4KG
111B12004 0.04% 0-576V 0-120A 4KG
111B301 0.1% 0-576V 0-30A 3KG
111B3005 0.05% 0-576V 0-30A 3KG
111B3004 0.04% 0-576V 0-30A 3KG

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