TEST-901 Large current 1000a primary current injection test set

primary injection test set

TEST-901 primary current injection test set adopts 32bit ARM Chip to control its output process and large capacity of toroidal transformers. It is equipped with LCD display and current meter; it can show primary current value, second current value, CT ratio and the action time of circuit breaker. Packing is used as aluminum alloy body with PC panel. TEST-901 test equipment is mainly applied to CT turn ratio testing in the power system and contact resistance test which need large current. This model current injection test set is ideal for 1. performance and turn-ratio tests of current transformers; 2. primary tests of protective relays; 3. current tests on low-voltage and high-voltage circuit breakers; 4.commissioning tests that require variable currents in the field.



  • Portable designed;
  • Accuracy class 0.5;
  • Quick and easy to use;
  • With 6m large current cable;
  • With CT ratio test function;
  • Max current output up to 1100A;
  • Permanent current up to 1000 A, 5KVA;
  • Built-in digital timer resolution 1ms;
  • Built-in digital ammeter 0.5% accuracy;
  • Small size, light weight, easy to test on-site;
  • Thermal and short-circuit & overload protection;


  • Switchgear Testing
  • Ground Grid Testing
  • Primary injection tests
  • Circuit Breaker Testing
  • Protective Relay Testing
  • Current Transformer Testing
  • Recloser and Sectionalizers


Electrical parameters 
Accuracy ±0.5%
Power Supply(AC) 220V±10%·25A, 50Hz/60Hz or 110V±10%·50A, 50Hz/60Hz
Current Output (AC) 1000A·5V or 500A·10V
Capacity 5KVA
The current output waveform distortion ≤5%
Dual protection overload electronic protection and software protection
Primary current 
Range 0-1100A
Resolution 0.1A
Accuracy <0.5%
Secondary measurement 
Range 0-6A
Resolution 0.001A
Accuracy <0.5%
Current duration 
1000A range 1000A    2-3minutes
500A      3-6minutes
500A range 500A      2-3minutes
Continuous output 0-400A
With timer
Range 0.0001~999.99S
Resolution 0.001S
Accuracy <0.2% ±2 words
Standard IEC61010-1;IEC 61326-1
Communication port RS232
Cable length 2x6m, 70mm²
Mechanical parameters 
Dimensions (W×D×H) (mm) 430×260×260
Weight(kg) 25
Environmental conditions 
Operating Temperature -10°C to 50°C
Storage Temperature -40°C to 70°C
Relative humidity ≤95%,on-condensing

Selection Guide

 Model ACCU
TEST-200 0.5% 0-250A YES YES 2KVA 200A: 2-3min;100A:3-6min 340×270×250 22.5KG Integrated structure
TEST-901 0.5% 0-1100A YES YES 5KVA 1000A: 2-3min;
430×260×260 25KG Integrated structure
TEST-902 0.5% 0-2200A YES YES 12KVA 2000A:2-3min;
360×300×295 and 320×300×300 35KG+15KG Fission structure
TEST-903 0.5% 0-3300A YES YES 15KVA 3000A:2-3min;
380×350×360 and 340×290×420 48KG+42KG Fission structure
TEST-905 0.5% 0-5500A YES YES 25KVA 5000A:2-3min;2500A:3-6min 430×430×445 and 550×450×600 68KG+55KG Fission structure

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