The NRJB Series Secondary Injection Relay Test Set is a high-precision diagnostic instrument engineered for testing protection and control relays in power transmission and industrial substations. Featuring multi-phase independent current and voltage sources driven by linear amplifiers, it evaluates overcurrent, differential, distance, and synchronization protection schemes. Built for field commissioning and laboratory calibration, the system executes automated test sequences and transient fault simulations.
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![Six Phase Relay Protection Tester]()
Six Phase Relay Protection TesterModel: NRJB6004-Phase Volt & 3-Phase Current: Meets all field testing needs for both traditional and microcomputer relays.DSP+FPGA High Precision: Delivers exceptional waveform accuracy with -
![Three Phase Relay Protection Tester]()
Three Phase Relay Protection TesterModel: NRJB300Operating System: High-performance embedded industrialDedicated DC Source: Equipped with an independent, dedicated auxiliary DC voltage source output: 110V (1A) / 220V (0.6A).
Standards & Calibration
IEC 60255-1 / IEC 60255-27:
Measuring relays and protection equipment — General requirements and product safety standards.
IEC 61850-9-2 / IEC 61850-8-1:
Communication networks and systems for power utility automation (Digital Substation GOOSE and Sampled Value compliance).
IEEE C37.90:
IEEE Standard for Relays and Relay Systems Associated with Electric Power Apparatus.
Traceable Calibration:
Every unit is factory-calibrated using multi-channel digital reference meters traceable to ISO/IEC 17025 accredited laboratories. Calibration records verify harmonic distortion, linearity, and phase synchronization.
Product Series
|
Model |
Application Scope |
Current / Voltage Channels |
Core Feature |
|
Field Portable |
Distribution substation commissioning & routine verification |
3-phase Current (30A) / 4-phase Voltage (120V) |
Lightweight field chassis, embedded industrial PC, touch screen operation |
|
Transmission Master |
EHV transmission lines, differential & distance protection |
6-phase Current (30A/phase) / 6-phase Voltage (150V/phase) |
High parallel current output (up to 180A), transient fault replay |
|
Digital Substation |
IEC 61850 digital substations & manufacturing QA |
6-phase Analog + Optical/Electrical GOOSE fiber ports |
Sampled Value (SV) simulation, fiber-optic Ethernet communication |
Technical Specifications
|
Parameter |
Specification |
Test Method / Standard |
|
AC Current Output Channels |
3-phase or 6-phase output: 0 A to 30 A per phase (Extendable up to 180 A) |
Linear Power Amplifier Architecture |
|
AC Current Output Accuracy |
Plus/minus 0.1 percent reading plus 0.02 percent range |
True RMS Closed-Loop Feedback |
|
AC Voltage Output Channels |
4-phase or 6-phase output: 0 V to 120 V / 150 V per phase |
Linear Voltage Source |
|
AC Voltage Output Accuracy |
Plus/minus 0.1 percent reading plus 0.02 percent range |
Precision Digital-to-Analog Conversion |
|
Phase Angle Range & Accuracy |
0 degrees to 360 degrees; Accuracy: plus/minus 0.05 degrees |
High-Speed DSP Synchronization |
|
Frequency Range & Resolution |
DC, 1 Hz to 1000 Hz; Resolution: 0.001 Hz |
Direct Digital Synthesis (DDS) |
|
Binary Inputs / Outputs |
8 isolated binary inputs, 4 high-speed relay binary outputs |
Dry and Wet Contact Sensing (up to DC 250V) |
|
Auxiliary DC Power Output |
Adjustable DC 0V to 110V, 220V (Max 150W overload protected) |
Isolated Regulated Power Supply |
|
PC Control & Interface |
Embedded 10.4-inch touch screen / External USB, Ethernet (TCP/IP) |
Windows-based Relay Testing Software Suite |
|
Power Supply & Protection |
AC 120V / 230V plus/minus 10 percent, 50 Hz/60 Hz |
Thermal, Overload, and Short-Circuit Automatic Cutoff |
|
Ingress Protection & Enclosure |
IP65 (lid closed), Ruggedized transit case with reinforced corners |
IEC 60529 standard enclosure |
|
Dimensions & Weight |
420 mm x 330 mm x 185 mm; 14.5 kg (Model RTS-6100) |
Portable Field Chassis |
Applications
Substation Commissioning & Acceptance:
Comprehensive testing of numerical, electromechanical, and microcomputer protection relays prior to high-voltage grid energization.
Periodic Preventive Maintenance:
Annual functional testing of overcurrent, directional, distance, and busbar differential protection schemes in operating substations.
Transient Fault Replay Testing:
Import and playback of COMTRADE fault files recorded by substation fault recorders to analyze relay tripping behavior under real grid disturbance conditions.
Relay Manufacturing Quality Control:
Production line calibration and automated testing for protection relay manufacturers requiring high-speed multi-channel analog injection.
Quality Control & Manufacturing Support
Our production facility operates under an ISO 9001:2015 certified quality management system dedicated to precision electrical test equipment:
Power amplifier boards undergo 72-hour full-load thermal burn-in cycles at 55 degrees Celsius to eliminate infant mortality and guarantee long-term thermal stability.
Every analog output channel is individually verified using spectrum analyzers to ensure total harmonic distortion (THD) remains below 0.05 percent under rated load.
Tailored application software modules designed to match regional utility testing templates.
Custom hardware configurations, including specialized test leads and auxiliary DC power ratings.
Private branding, custom front-panel layouts, and localized user manuals for international distributors.
Factory Show
FAQ
Q: How does the test set prevent amplifier overheating during high-current injection tests?
A: The unit utilizes high-fidelity linear amplifiers equipped with intelligent thermal management, dynamic heat sinks, and automatic current-limiting protection. When sustained high current (e.g., 30A or parallel 180A) is applied, internal sensors monitor junction temperature and automatically regulate output or trigger safe shutdown before thermal thresholds are exceeded.
Q: Can this test set import and replay COMTRADE fault record files?
A: Yes. The built-in testing software includes a dedicated transient playback module that allows engineers to directly import standard COMTRADE format fault files captured by substation digital fault recorders, reproducing exact multi-phase voltage and current waveforms to test relay tripping times.
Q: Does the instrument support testing of IEC 61850 digital substations?
A: Yes. Models configured with digital options include optical/electrical Ethernet ports supporting IEC 61850-9-2 Sampled Values (SV) and GOOSE messaging, enabling direct communication and testing of merging units and digital protection relays without traditional analog wiring.
Q: What types of binary contacts are supported on the digital inputs?
A: The 8 binary inputs are fully isolated and compatible with both dry contacts and wet contacts ranging from DC 5V to 250V. This allows direct connection to auxiliary trip contacts, breaker auxiliary switches, and optical coupling signals.
Q: How are test reports generated and archived for utility audits?
A: Test templates automatically record pickup values, operating times, harmonic responses, and pass/fail statuses. Once testing is complete, reports can be exported directly via USB flash drive in PDF or Excel formats, or synchronized to enterprise asset management databases via Ethernet.
Q: What calibration documentation is included with international shipments?
A: Each test set ships with a factory test report, an electrical safety compliance certificate, and an ISO/IEC 17025 traceable calibration certificate detailing measured errors across all voltage, current, frequency, and phase angle ranges.
Request for Quotation
Need a reliable, high-precision relay testing set for utility fleet maintenance or distribution inventory?
Contact our technical application team for detailed engineering documentation, tender specifications, or factory-direct procurement options.
Email: wang@transformer-test.com
Lead Time: 5 to 10 business days for standard stock units; 15 to 20 business days for custom OEM branding or IEC 61850 digital configurations.
Package Includes: Secondary Injection Relay Test Set Main Unit, Heavy-Duty Test Lead Set with Banana Plugs and Kelvin Clips, Power Cord, Ethernet Communication Cable, Grounding Cable, USB Flash Drive with Testing Software Suite, ISO/IEC 17025 Calibration Certificate, Rugged Pelican-style Transit Case.
Refine On (Hebei) Electric Power Technology Co., Ltd. is one of the most reliable secondary injection relay test set manufacturers and suppliers in China, also supports customized service. Please feel free to wholesale advanced secondary injection relay test set at competitive price from our factory. Contact us for quotation.
