Product Detailed Introduction
The microcomputer relay protection tester / microcomputer relay protection tester / Yangzhou relay protection tester adopts microcomputer technology, composed of microcontroller, logic control unit, AC/DC current and voltage output unit, high-precision data acquisition unit, LCD display, real-time clock, printer, etc. It has high measurement accuracy and good repeatability. The instrument also has the advantages of beautiful appearance, reliable performance, simple operation, and complete functions. It is an ideal testing instrument for calibrating relay protection devices.
This instrument can test various AC/DC currents, voltages, signals, reclosing, differential, and other individual relays as well as complete relay protection panels. It can test the pickup voltage (current) value, release voltage (current) value of various relays, and the pickup time and release time of various contacts (normally open, normally closed, changeover, time-delay). All tests are automatically performed three times, the average of the three times is automatically calculated, and the test results can be printed.
With the main body unchanged, the weight is only 10 kg. It adopts a stainless steel or plastic-aluminum case, which is beautiful, sturdy, and has good shock absorption performance. It uses a double carbon brush voltage regulator (i.e., double-sided voltage regulator). The large knob adjusts the AC/DC voltage and current with heavier loads, while the small knob adjusts the AC/DC voltage and current with lighter loads. Both channels can output simultaneously. It uses a 0.5-class digital meter and high-precision sensors for accurate measurement. It adopts a six-digit digital electric stopwatch to meet time measurement requirements. It is indeed a good tool for relay protection personnel working outdoors.
Technical Parameters:
1. AC voltage output: 0～250V continuously adjustable, max output capacity 1000VA
2. AC current output: 0～20A, 0～100A continuously adjustable
0～20A: open circuit voltage 5V
0～100A: open circuit voltage 10V
3. DC voltage output: 0～300V continuously adjustable, max 3A
4. DC current output: 0～200mA, 0～5A continuously adjustable
0～200mA: open circuit voltage 48V
0～5A: open circuit voltage 24V
5. Digital millisecond meter: max range: 100 seconds
Resolution: 0.001 seconds
Accuracy: 0.01% + 2 digits
6. Overall measurement accuracy: 0.5 class
7. Dimensions: 420×310×160
8. Weight: 16kg
Precautions:
1. Before powering on, no load should be connected to the output terminals, the voltage regulator should be reset to zero, and the "output control" switch should be in the off position.
2. The voltage output terminals should not be connected to low-resistance loads to avoid overheating due to overcurrent.
3. The auxiliary circuit and main circuit can only output one type of quantity at a time.
4. When the auxiliary circuit and main circuit output simultaneously, the main circuit output current should be selected.
5. During storage, transportation, and use, attention should be paid to shock prevention, moisture prevention, and avoiding severe impact.
