Relay Protection Tester | XHJB612
The XHJB612 relay protection tester is a compact, single-phase microcomputer relay protection testing instrument designed for the verification and commissioning of protective relays, contactors and small protection systems. Operating on single-phase AC220V power supply with an elegant PVC panel design, it provides AC and DC variable output for a wide range of relay testing applications.
The main circuit delivers AC output with current ranges of 0-5A, 0-50A and 0-150A and continuously adjustable voltage of 0-250V, plus DC output of 0-250V and 0-20A / 0-500mA. A built-in digital millisecond meter with start and stop terminals measures relay operating time from 0.01 to 99.99 seconds, and audible and visual indicators confirm the action of relay contacts during testing.
Constructed with a durable high-strength aluminum alloy chassis, the tester is portable and field-ready. Simple panel operation with clear wiring marks makes it an efficient tool for relay testing in substations, power plants, industrial facilities and educational laboratories.
Applications & Target Audience: Designed for relay protection commissioning and setting calculation service companies, power relay and protection device manufacturers performing factory acceptance tests, power grid dispatching automation and substation integrated automation commissioning teams, marine switchboard and ship electrical system integrators, electric motor manufacturers verifying protection circuits in factory electrical tests, and distribution automation and feeder automation (FA) operation teams.
Key Specifications
| Parameter | Specification |
|---|
| Model | XHJB612 |
| Power Supply | Single-phase AC220V |
| AC Output Current | 0-5A / 0-50A / 0-150A |
| AC Output Voltage | 0-250V continuously adjustable |
| DC Output Voltage | 0-250V |
| DC Output Current | 0-20A / 0-500mA |
| Time Measurement | 0-99.99S, built-in digital millisecond meter with start/stop terminals |
| Voltage Measurement | 0~500V, accuracy 0.5%RD ±2d |
| Current Measurement | 0~5A / 0~50A / 0~150A, accuracy 0.5%RD ±2d |
| Time Measurement Range | 0.01~99.99S |
| Indicators | Audible and visual indicators for action contacts |
| Chassis | High-strength aluminum alloy, portable |
| Panel | Elegant PVC panel with clear wiring marks |
| Certification | CE / ISO |
Main Functions
Single-phase AC220V power supply with elegant PVC panel design, simple and reliable
mA output capability for polarization and signal relay testing
Built-in digital millisecond meter with start/stop terminals for time measurement
Audible and visual indicators confirm relay contact action during testing
Durable high-strength aluminum alloy chassis for portability and field use
Clear wiring marks on the panel for efficient and correct connection
Six Relay Types One Tester Covers
The XHJB612 verifies the most common relay types found in protection and control circuits, covering both the operating value and the operating time of each device.
| Relay Type | Typical Test | XHJB612 Function Used |
|---|
| Overcurrent relay | Pickup current, drop-off current, time-current characteristic | AC current output 0-5A / 0-50A / 0-150A with millisecond timer |
| Voltage relay | Pickup and drop-off voltage, over and under voltage | AC/DC voltage output 0-250V continuously adjustable |
| Intermediate relay | Operating voltage, operating time, contact reliability | DC voltage output 0-250V with time measurement |
| Time relay | Delay accuracy and repeatability | Built-in digital millisecond meter 0.01-99.99S |
| Signal and polarization relay | Minimum action current, polarity check | mA output capability for sensitive relay testing |
| Reclosing relay | Closing and opening sequence timing | Start/stop terminals with audible and visual indicators |
Output Guide
AC output
The AC output provides current ranges of 0-5A, 0-50A and 0-150A for testing current-operated relays, and continuously adjustable voltage of 0-250V for testing voltage-operated relays and auxiliary equipment. The 0.5%RD ±2d accuracy ensures reliable measurement of the operating value.
DC output
The DC output provides 0-250V for testing DC-operated relays such as intermediate, time and signal relays, and 0-20A / 0-500mA current capability for coil energization and mA-level sensitive relay tests. The mA output is especially useful for polarization and signal relays in protection circuits.
Time measurement
The built-in digital millisecond meter starts and stops through the dedicated terminals, measuring the relay operating time from 0.01 to 99.99 seconds. The audible and visual indicators give immediate feedback when the relay contacts act, allowing the operator to verify both the operating value and the operating time in one test.
Operation Guide
Connect the tester to a single-phase AC220V power supply and switch on the instrument
Check the wiring diagram on the PVC panel and connect the relay under test to the appropriate output terminals
Connect the start and stop terminals of the millisecond meter to the relay auxiliary contacts
Select the required output range: AC current, AC voltage, DC voltage or mA output
Adjust the output gradually while observing the panel meter and the audible/visual indicators
Record the pickup value and the operating time, then reduce the output to measure the drop-off value
Disconnect the test leads and switch off the instrument after testing
FAQ
Q1: What can the XHJB612 relay protection tester test?
It tests overcurrent, voltage, intermediate, time, signal, polarization and reclosing relays, verifying their operating value, drop-off value and operating time in protection and control circuits.
Q2: What outputs does it provide?
It provides AC output with current of 0-5A / 0-50A / 0-150A and voltage of 0-250V continuously adjustable, plus DC output of 0-250V and 0-20A / 0-500mA including a mA output for sensitive relay testing.
Q3: How is the operating time measured?
The built-in digital millisecond meter with start and stop terminals measures the relay operating time from 0.01 to 99.99 seconds, with audible and visual indicators confirming the contact action.
Q4: Is the instrument portable for field use?
Yes. The high-strength aluminum alloy chassis makes it lightweight and durable, and the simple panel operation with clear wiring marks allows efficient testing in substations, power plants and industrial facilities.
Q5: What is the measurement accuracy?
Voltage measurement covers 0~500V and current measurement covers 0~5A / 0~50A / 0~150A, both with an accuracy of 0.5%RD ±2d, providing reliable and repeatable test results.
Every XHJB612 is delivered with the main unit, test leads, power cord and operation manual, and is backed by one-year free warranty and lifetime technical service. For ordering, training and after-sales support, please contact our sales team.
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