The Portable Relay Protection Tester is widely used in the commissioning, maintenance, and troubleshooting of power system protection and automation equipment. Its precision output, flexible test modes, and rugged handheld design make it an essential tool in a variety of electrical engineering environments:
Substation Commissioning & Maintenance
Perform on-site testing of protective relays, including overcurrent, distance, differential, and directional relays, ensuring correct settings and reliable operation before energization.
Power Generation Plants
Verify generator protection schemes such as differential protection, loss-of-excitation, reverse power, and low/high frequency tripping functions.
Transmission and Distribution Networks
Test underfrequency load shedding (UFLS) relays, auto-reclosing (AR) logic, and synchronization check (sync-check) devices to maintain grid stability and restore service efficiently after faults.
Industrial Power Systems
Validate motor protection relays, transformer differential relays with harmonic restraint, and feeder protection in manufacturing, mining, and petrochemical facilities.
Railway & Traction Power Systems
Conduct protection tests on AC/DC traction substations where compact, battery-powered equipment is required for field access.
Renewable Energy Installations
Commission protection systems in solar PV plants and wind farms, particularly for islanding detection, anti-islanding protection, and grid-synchronization verification.
Relay Manufacturing & Calibration Labs
Use as a portable reference source for factory acceptance tests (FAT), R&D validation, and periodic calibration of protection IEDs.
Training & Education
Support hands-on training for engineers and technicians in relay behavior, fault simulation, and protection logic analysis.
With its comprehensive test functions—including manual output, state sequencing, harmonics injection, and millisecond-level timing—the tester ensures accurate evaluation of both conventional electromechanical relays and modern digital protection devices in diverse operational scenarios.
This equipment has a 6 phase voltage and 6 phase current shaft, which is suitable for various types of relay protection device test.
It can complete most of the field test and verification work, can verify all kinds of relays and microcomputer protection, and can simulate all kinds of complex transient, permanent and transformational faults for whole group tests.
It not only has the performance and function of a large tester, but also has the advantages of a small and flexible tester, simple operation and high reliability.
It is suitable for power grid company, power plant, power construction company, protection device manufacturers, petrochemical enterprises, rail transit traction power supply system and other users of electrical secondary equipment operation and maintenance.
Output up to 4 phase voltage and 3 phase current, can be a variety of combinations to achieve the conventional 4 phase voltage and 3 phase current type output mode, not only compatible with the traditional various test methods, but also convenient for three-phase transformer differential test and plant power quick cutting and ready self-throwing test.
Mainly including performance testing, fault simulation, parameter setting, system debugging, teaching, and training.
This measuring instrument adopts DSP AC sampling and can simultaneously measure 3 channels of voltage and 6 channels of current analog signals. The instrument d
Mainly including performance testing, fault simulation, parameter setting, system debugging, teaching, and training.
Mainly including performance testing, fault simulation, parameter setting, system debugging, teaching, and training.
Mainly including performance testing, fault simulation, parameter setting, system debugging, teaching, and training.
Mainly including performance testing, fault simulation, parameter setting, system debugging, teaching, and training.
Mainly including performance testing, fault simulation, parameter setting, system debugging, teaching, and training.
Mainly including performance testing, fault simulation, parameter setting, system debugging, teaching, and training.
Can calibrate various relays (such as current, voltage, inverse time limit, power direction, impedance, differential, low cycle, synchronous, frequency, DC, intermediate, time, etc.) and microcomputer protection
