TEST-750 Single phase microcomputor protection relay test set

relay test set

TEST-750 single phase relay test set is a portable relay test unit, high performance, operation simply, portable designed to test in the field; it adopts aluminum alloy body with PC panel, robust shape; microcomputer with the 32bit ARM chip control, LCD screen display single-phase protective relay test device of voltage and current output stopwatch; a full isolation, adjustable AC and DC voltage, AC direct current; an adjustable DC voltage and an adjustable AC voltage; output circuit with double overload protection, high output capacity, small size, light weight, high reliability. The equipment is suitable for a variety of relay field calibration and performance test. So this model relay test set is a good ideal tool for power engineering company to test over-current relay and over-voltage relay.



  • Power capicity 1000VA;
  • Stopwatch time accuracy 0.1ms;
  • It can test ac micro circuit breaker;
  • With AC/DC voltage meter from 0 to 600V;
  • The maximum output current: 0-150A or 0-250A;
  • AC voltage output 0-250V, DC voltage output 0-300V;
  • With internal electronic stopwatch potential and contact;
  • Equipped with LCD digital AC/DC ampere meter from 0 to 6A;
  • As a single phase AC current source, or AC voltage source;
  • Short circuit, overload and over range protection automatically;
  • Integrated kit design with multiple functions, and easy to carry;
  • U/I AC Test and DC Test, All the isolation adjustable DC voltage output;


  • Power plant;
  • Universities;
  • Oil, Gas company;
  • Panel manufacturer;
  • Research institutes;
  • Relay manufacturers;
  • Electrical laboratory;
  • Railway electric company;
  • Electrical testing center;
  • Power engineering commissioning company;
  • Electricity power bureau & power company;
  • Electrical Department of industrial and mining enterprises;


Electrical parameters
Accuracy 0.5% or 0.2%
Power supply 220V±10% 1000VA·50/60Hz; 110V±10% 1000VA·50/60Hz;
Turn on/turn off auxiliary contacts
Max voltage 1A
Max current AC250V or DC120V
AC current output
AC current range 0-150A or 0-250A
Range 0-10A 0-40A 0-100A 0-100A
No-load Voltage(Min) 90V 25V 10V 10V
Full-load Voltage (Min) 80V 22V 8V 6V 
Full-load Current (Max) 10A 40A 100A 250A
AC/DC voltage output
Range 0-250V(AC) 0-300V(DC)
No-load Voltage(Min) 250V 320V
Full-load Voltage (Min) 240V 250V
Full-load Current (Max) 3A 3A
Auxiliary DC voltage output
Range 5-120V 110-220V
Max Voltage 120V 220V
Max Current 0.5A 0.5A
Auxiliary AC voltage output
Range 0-120V
Max voltage 120V
Max current 0.5A
Range 0.0000-999999S 
Resolution 0.1mS
Accuracy ±5 words
Max input voltage (With contact and potential nput) DC 250V 
Range Inside 0.000-150.0A or 0.000-250.0A
Outside 0.000-6.000A(AC or DC)
Accuracy 0.2%
Range 0.0-600.0V(AC or DC)
Accuracy 0.2%
Measuring mode AC True RMS
DC Average value
Serial interface RS232
LCD 320*240 Greenlight LCD display
Resistance 0.5Ω-2.5kΩ
Capacitor 10 μF, max voltage 450 V AC
Standard 2006/95/EC, EMC 2004/108/EC, IEC61000, IEC61010, IEC 61326, JJG1112-2015, DL/T624-2010, DL/T 1153 -2012
Mechanical characteristics
Dimensions (W×D×H) (mm) 340×270×260
Weight 18kg
Mechanical parameters
Operation temperature 0°C to 50°C
Storage temperature -40°C to 70°C
Humidity range Relative humidity 5 ... 95 %, non-condensing

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