JBC-03 single-phase relay protection tester

JBC-03 single-phase relay protection tester

1、 Overview
The JBC-03 relay protection tester is a highly intelligent and multifunctional relay protection calibration instrument developed by our factory based on the original foundation. This instrument adopts microcomputer technology and consists of a 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. This instrument also has the advantages of beautiful appearance, reliable performance, easy operation, and complete functions, making it an ideal testing instrument for verifying relay protection devices.
This instrument can test various AC/DC currents, voltages, intermediates, signals, reclosers, differentials, and other individual relays as well as entire relay protection screens. It can test the pull in voltage (current) value, release voltage (current) value, pull in time and disconnect time of various contacts (normally open, normally closed, conversion, delay) of various relays. It can automatically test three times, calculate the average of the three times, and print the test results.

JBC-03 single-phase relay protection tester

2、 Characteristics
Due to the use of microcomputer control and Chinese character prompts for operation. This machine also has a self check error function, which immediately engages in self check after startup,Extreme · LargeThe place is convenient for inspection and maintenance. Such as "pull in voltage", "disconnect voltage", "normally open pull in time", etc.
IIIJBC-03 single-phase relay protection testerMain technical parameters
1. AC voltage output: continuously adjustable from 0 to 250V,z·uiLarge output capacity 1000VA
2. AC current output: continuously adjustable from 0 to 20A and 0 to 100A
When 0-20A, the open circuit voltage is 5V
When 0-100A, the open circuit voltage is 10V
3. DC voltage output: continuously adjustable from 0 to 300V,z·uiBig 3A
4. DC current output: continuously adjustable from 0 to 200mA and 0 to 5A
When 0-20mA, the open circuit voltage is 48V
When 0-5A, the open circuit voltage is 24V
5. Digital Millisecond Meter:z·uiLarge duration: 100 seconds
Resolution: 0.001 seconds
Accuracy: 0.01% 1 word
6. Measurement accuracy of the whole machine: Level 0.5
7. Volume: 420 × 310 × 160
8. Weight: 16kg
4JBC-03 single-phase relay protection testerPanel Description


1. AC current AC, A (100A, 20A) output terminal;
2. DC current DC, A (5A, 200A) output terminal, red for "+" and black for "-";
3. AC and V output terminals for AC voltage;
4. DC current DC, V output terminal, red for "+" and black for "-";
5. Input terminal;
6. LCD liquid crystal display;
7. Printer;
8. Rotate the DC 5A and 200mA knobs clockwise to increase the output from small to large;
9. Voltage regulator, regulating AC current and AC voltage, rotating the knob clockwise to output from small to large;
10. Function operation keyboard;
11. Output switch;
12. Power switch;
13. Power socket (AC, 220V) (5A).
5、 Instructions for operation keys
1. Print: After the test is completed, this key can be used to print the test data. And it can be printed multiple times.
2. Timing measurement: When adjusting the voltage (current) to the rated value, press this button to automatically measure the relay's on/off time three times.
3. Measurement: Automatically test the on/off voltage (current) values of the relay, repeat the measurement three times.
4. Right shift: Move the cursor to the right.
5. Flip up: Add 1 to the number or select the menu upwards.
6. Flip down; Subtract 1 from the number or select the menu downwards.
7. Backup: Used to control DC current output.
8. Return: Indicates giving up or returning to the previous menu.
9. Confirmation: Indicates confirmation or entry into the next level menu.
6、 Testing method
Turn on the power switch, the display screen shows "Welcome to use...", "Self checking in progress...", the microcomputer self checks, and after the self check is normal, it displays "Self check completed.
When measuring, the type of test power supply should be selected using the "flip up" and "flip down" keys according to the type of relay being tested, so that the status display corresponds to the type of relay being tested. And connect the relay coil to the corresponding power output terminal, and connect the relay contact to the input terminal.
1. Measurement: Press the "Measurement" button to measure the suction and disconnection voltage (current) values three times, and then press the "Print" button to print the data.
2. Time measurement: First find the rated value of the tested relay, then press the "Time Measurement" button. The machine will automatically open and close three times to measure the suction and disconnection time. After completion, press the "Print" button to print the data.
3. The use of the "Convert" button: First adjust the DC current value, then press the "Convert" button, and the DC current will output normally, and the displayed value will be shown on the second line of the screen. At this time, it can output simultaneously with other power sources, providing relay verification for multiple power sources, such as reclosing relays.
4. Time setting: Users can adjust the internal clock of the instrument.
5. Instrument calibration: After using the instrument for a period of time, if there is a deviation in the test, the user can calibrate it with a high-level meter and adjust the internal coefficient with the "up" and "down" keys without opening the chassis or adjusting any knobs.
7、 Attention:
1. Before use, please read the user manual carefully to avoid operational errors.
2. Before starting up, please ensure reliable grounding to ensure safe operation of both personnel and equipment.
3. After completing one experiment, please adjust each adjustment knob toz·uiSmall value.
4. The various power sources of this machine shall not be used as * power sources; The power supply of this machine is used intermittently, and the duration of high current output should not exceed 5 minutes.
5. Please turn off the power in a timely manner when there is an abnormality in this machine.
6. When connecting or disconnecting the device under test, the output terminal may be live. Please pay attention to safety,
7. This instrument comes with a free warranty and lifetime maintenance in case of any quality issues within 12 months of sale.
8、 Equipment List
1. One JBC-03 microcomputer relay protection tester;
2. A set of testing lines;
3. Two sets of fuses;
4. One user manual;
5. A printer manual;
6. One copy of product qualification certificate.