KEJBY-A Single-Phase Relay Protection Calibrator

Product Name: Single-Phase Relay Protection Calibrator
Product Model: KEJBY-A
Alternative Names: 1. Microcomputer Relay Protection Calibrator
                 2. Single-Phase Relay Protection Tester
                 3. Single-Phase Relay Protection Calibrator
                 4. Relay Protection Test Device

I. Product Overview:
       The KEJBY-A Single-Phase Relay Protection Calibrator is a highly intelligent, multifunctional relay protection calibration device developed based on previous models.
       Utilizing microcomputer technology, the KEJBY-A integrates a single-chip microcontroller, logic control unit, AC/DC current and voltage output unit, high-precision data acquisition unit, LCD display, real-time clock, and printer. It offers high measurement accuracy and excellent repeatability. With its attractive design, reliable performance, user-friendly operation, and comprehensive functionality, this instrument is an ideal testing device for calibrating relay protection systems.
       This calibrator can test various types of relays and entire relay protection panels, including AC/DC currents, voltages, and intermediate signals. It automatically measures pull-in voltage (current), release voltage (current), and the operating times of various contacts (normally open, normally closed, changeover, time-delay) three times, calculates the average values, and prints the test results.
II. Main Features:
       Equipped with microcomputer control and Chinese-language operation prompts, the device also includes a self-diagnostic error reporting function. It performs self-check immediately upon startup, greatly facilitating inspection and maintenance. Parameters such as "pull-in voltage," "release voltage," and "normally open contact operating time" are automatically tested.
III. Technical Parameters:
      1. AC Voltage Output: 0–250V, continuously adjustable, output current 3A;
      2. AC Current Output: 0–20A, 0–100A, continuously adjustable;
                                   Open-circuit voltage 2V at 0–20A;
                                   Open-circuit voltage 10V at 0–100A;
      3. DC Voltage Output: 0–300V, continuously adjustable, 3A;
      4. DC Current Output: 0–200 mA, 0–5A, continuously adjustable;
                                   Open-circuit voltage 15V at 0–200 mA;
                                   Open-circuit voltage 15V at 0–5A;
      5. Digital Millisecond Meter:  
                     Range: 0–100 seconds;
                  Resolution: 0.001 seconds;
                     Accuracy: 0.01% ±2 digits;
     6. Overall Measurement Accuracy: Class 0.5
     7. Dimensions: 470×325×270 (mm)
     8. Weight: 16.0kg 

Note: The product is continuously updated and improved during production. The product appearance images are for reference only (subject to the actual product). Changes may be made without prior notice.