Overcurrent and earth fault
Inject controlled current ramps or steps and capture pickup, dropout and operating time against the selected curve.
- sales@hvtesters.com
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- sales@hvtesters.com
- +8613661908522
Inject the fault quantities the relay is expected to see
Secondary Injection Test Equipment
Compare protective relay test sets by current and voltage outputs, phase channels, frequency and phase control, binary I/O, timing, automated test modules and reporting. Start with the protection functions and terminal map—not only the largest output value.
3-phase and 6-phase routesCurrent and voltage injectionTrip timing and reports
Fault simulation / analog injection50 / 60 Hz
IA · IB · ICphase currents
VA · VB · VCphase voltages
φ / fangle / frequency
BINtrip contact
Pickupthreshold
42.6 msoperate time
Pass?authority criteria
Translate protection functions into outputs
Five relay questions define the test-set architecture
The same relay tester can support different protection elements only when its analog channels, phase relationships, binary contacts, timing and software modules match the approved test plan.
Differential protection
Coordinate multiple current channels, magnitude, angle, restraint and harmonic conditions required by the relay test module.
Distance protection
Generate synchronized current and voltage phasors to place impedance points within, near or outside defined zones.
Voltage and frequency
Vary voltage, frequency, phase sequence or rate according to the element and documented settings.
Logic and reclosing
Use binary I/O and timers to verify trips, alarms, interlocks, dead time and sequence logic where required.
Wrindu analog secondary-injection routes
Compare universal, compact and six-current relay test platforms
These routes generate conventional analog current and voltage signals at relay secondary terminals. Their channel architecture and interface differ, so confirm the exact model-specific output table rather than treating every “six phase” description as identical.
Universal product family
RDJB-802M / RDJB-1600M
Microcomputer Protection Relay Tester
A microcomputer-controlled family supporting multi-phase current and voltage output, independent Windows operation and field relay test workflows.
Up to 6I + 6VPublished family capability
0–30 APublished phase-current span
0–120 VPublished phase-voltage span
8 in / 4 outPublished binary terminals
Compact field architecture
RDJB-1600Y
6 Phase Relay Tester
A compact platform whose published overview describes standard four-voltage and three-current output with built-in Windows operation.
4V + 3IPublished standard output
40 A / phasePublished phase current
125 V / phasePublished phase voltage
8.4-inchPublished TFT display
Six-current differential route
RDJB-1600K
Intelligent 6 Phase Protection Relay Test Kit
A compact 6-voltage/6-current platform designed for multi-phase simulations, including three-phase differential protection workflows.
6V + 6IPublished simultaneous route
30 A / phasePublished phase current
120 V / phasePublished phase voltage
WindowsBuilt-in and remote operation
Configuration note: public pages support early comparison only. Confirm per-model AC/DC current and voltage ranges, burden and output duration, low-level accuracy, frequency and phase limits, harmonic capability, binary I/O ratings, GPS or time synchronization, test modules, language, software, accessories and calibration documents with Wrindu.
Specify the complete signal path
Four architecture decisions determine whether a relay test set fits
Count independent outputs
Map the current and voltage channels required simultaneously for each protection element and fault model.
Check burden and duty
Evaluate useful amplitude, output power, duration and accuracy at the low and high values the relay test requires.
Map trips and commands
Count wet or dry inputs, outputs, auxiliary supply needs, contact ratings and timing events.
Define the test file
Confirm relay models, automated modules, settings import, sequence control, result review and report export.
Compare the published platform routes
Match the relay scheme before comparing maximum outputs
The table is an early shortlist, not a final datasheet. Ask Wrindu to identify the exact model and confirm every simultaneous-output and duty requirement.
| Selection field | RDJB-802M / 1600M | RDJB-1600Y | RDJB-1600K | Procurement meaning |
|---|---|---|---|---|
| Published analog route | Product family supports six-phase current and voltage output; confirm model-specific column | Standard four-voltage and three-current output described on product page | Six voltage and six current outputs can operate simultaneously | Count signals needed at the same instant, not the total number used across separate tests. |
| Published phase output | Current 0–30 A/phase; voltage 0–120 V/phase on published family table | Current 40 A/phase, 120 A parallel; voltage 125 V/phase | Current 30 A/phase; voltage 120 V/phase | Confirm burden, accuracy and allowed duration at the values required by the relay. |
| Operating interface | Built-in Windows; independent or computer-connected operation | Windows 7 and published 8.4-inch TFT display | Built-in Windows with laptop or desktop remote operation | Field workflow determines the value of embedded operation, remote control and display size. |
| Early application fit | Flexible family selection for conventional relay functions and multi-phase tests | Compact 4V/3I field route for common relay and transformer differential applications | 6V/6I route for simultaneous multi-phase and three-phase differential work | Final fit comes from the protection functions, terminal map and approved test plan. |
| Confirm before ordering | Exact model column, output power/duty, binary I/O, time accuracy and software modules | Meaning of model's “six phase” naming, exact output combinations, binary I/O and test modules | Simultaneous burden, output duration, binary I/O, accessories and automation modules | Request an itemized configuration and current specification sheet. |
| Product details | Open RDJB-802M/1600M | Open RDJB-1600Y | Open RDJB-1600K | Product pages remain the source for full specifications and current quotation. |
Record stimulus and response together
A relay result connects injected quantities to a binary event
Current
step / ramp
Voltage
φ / f
Trip input
t operate
The test file must preserve both sides of the event
Document what the test set generated, which relay terminal received it and which relay output or logic signal stopped the timer.
- Relay manufacturer, model, firmware, setting group and protected asset.
- Current, voltage, frequency, phase angle, harmonics and sequence state.
- Binary input/output mapping, wet/dry contact configuration and auxiliary supply.
- Pickup, dropout, operate time, trip logic, expected value, tolerance source and review status.
A visible four-step procurement method
How to select secondary injection test equipment
Use these steps before requesting a quotation. The same visible sequence is represented in the page's HowTo structured data.
List protection functions
Identify relay models, elements, setting groups, test modules and single-ended or coordinated test scope.
Map analog outputs
Count simultaneous current and voltage channels, then define amplitude, burden, frequency, angle and harmonics.
Map binary events
Specify trip, alarm, block, interlock and command contacts, auxiliary supply and timing resolution.
Define deliverables
Confirm automated modules, settings import, report fields, language, calibration, leads and synchronization options.
Keep each search intent separate
Secondary analog injection is one layer of protection-system testing
Secondary injection equipment
This page owns conventional current/voltage injection at relay secondary terminals, binary response timing and relay-test reporting.
View relay protection testing equipment →Primary current injection
Primary injection drives the primary circuit and can evaluate more of the CT, wiring and trip chain. It needs a separate equipment and safety scope.
Primary current injection equipment →IEC 61850 digital testing
Sampled Values, GOOSE, network timing and digital substation workflows belong to the dedicated IEC 61850 equipment page.
IEC 61850 relay test equipment →Prepare a useful inquiry
Send the relay list, output map and test-module requirements
Relay and protection scope
- Relay manufacturer, model, firmware and setting-file format
- Protected asset and required protection elements
- Commissioning, maintenance, troubleshooting or factory context
- Single-ended, end-to-end or synchronized test requirement
- Required pickup, dropout, timing, logic and curve tests
Test set and deliverables
- Simultaneous current and voltage channels, ranges and burden
- Frequency, angle, harmonics, DC and auxiliary supply needs
- Binary input/output map and contact voltage
- GPS or external synchronization and IEC 61850 boundary
- Software modules, report, language, accessories and calibration documents
Secondary injection tester FAQ
Questions to settle before selecting a relay test set
What does secondary injection test equipment test?
It generates controlled current and voltage signals at a protective relay's secondary input terminals and records the relay response. Depending on the configuration and software, it can support pickup, dropout, operating time, directional, differential, distance, voltage, frequency, reclosing and logic tests.
What is the difference between primary and secondary injection?
Secondary injection applies test quantities directly to relay secondary inputs, focusing on relay measurement, logic and timing. Primary injection applies high current through the primary circuit and can include CTs, primary conductors, secondary wiring, relay and trip chain. The two methods have different equipment, isolation and safety requirements.
When is a six-current relay test set needed?
Six independent current outputs can simplify tests that require two three-phase current systems simultaneously, including selected transformer differential and multi-terminal simulations. The requirement should come from the relay scheme and test module; a six-current platform is not automatically necessary for every relay.
Why do binary inputs and outputs matter?
Binary inputs capture trip, alarm or other relay contact changes and stop timers. Binary outputs can issue commands or simulate external logic states. Confirm wet/dry contact handling, voltage ratings, polarity, channel count and isolation against the actual relay circuit.
What should be included in a relay test-set quotation request?
Provide relay models, protection functions, required analog channels, amplitude and burden, frequency and angle needs, binary I/O, auxiliary supplies, synchronization, automated modules, settings import, reports, language, leads, calibration documents, quantity and delivery schedule.
Compare relay test sets against the real protection scheme
Send Wrindu the relay list, functions, simultaneous outputs, binary I/O, synchronization and reporting needs. The technical team can help shortlist the appropriate RDJB platform and configuration.
Technical parameters shown here are based on public HVTesters product information reviewed on 29 August 2026. Confirm the current model, specifications, simultaneous output, duty, software, accessories, calibration documents and approved test method before purchase or use.
Know more / relay test-set selection notes
Build the secondary injection system from the relay test plan
This expanded guide explains the equipment boundary, analog outputs, binary timing, protection-function mapping, record structure and supplier information required for a defensible secondary injection configuration.
Know More: Secondary injection principles, channels and procurement
Secondary injection isolates relay behavior from the primary power path
A secondary injection test set applies controlled current and voltage directly to the protective relay's secondary input terminals. The test can verify measurement elements, pickup, dropout, operating time, directional logic, differential restraint, distance zones, voltage and frequency elements and selected scheme logic without driving high current through the primary conductor.
This boundary is important. A successful secondary injection test does not prove every current transformer, voltage transformer, primary conductor, secondary cable, terminal block and trip circuit is correct. Those parts may require wiring checks, CT/PT tests, trip-circuit tests, primary injection, end-to-end scheme tests or other approved work.
Secondary injection
Controlled analog signals enter the relay's secondary terminals. The main subject is relay measurement, logic, timing and output behavior.
Primary injection
High current enters the primary path so more of the CT, conductors, secondary wiring, relay and trip chain can be included.
Safety boundary: “secondary” does not mean risk-free. CT secondary circuits, VT circuits, station DC, trip wiring and test-set outputs must follow the site's isolation, shorting, grounding, authorization and restoration procedures.
Independent channels matter more than a broad phase label
Product names such as three-phase, six-phase or universal do not fully describe how many current and voltage outputs can operate simultaneously. Build a signal map for each required test and compare that map with the exact model specification.
Protection elementWhat fault or condition is being simulated?
Signal mapWhich currents, voltages, angles and frequencies are simultaneous?
Output dutyWhat burden, amplitude and duration are required?
Response mapWhich trip, alarm or logic contact is captured?
Check the useful operating point
- Current and voltage range at each independent output.
- Output power or compliance voltage at the expected relay burden.
- Permitted duration for high-current or paralleled-current operation.
- Accuracy and stability at low current as well as maximum output.
- Frequency range, phase-angle control, DC output and harmonic generation.
- Whether current and voltage channels remain independent during the required fault sequence.
Binary I/O turns an injected waveform into a measured relay operation
Analog outputs create the simulated electrical condition. Binary inputs capture the relay's trip, alarm, pickup or other contact changes and allow the test software to calculate operating time. Binary outputs can issue commands, simulate breaker auxiliary contacts or change logic states where the approved plan requires them.
Binary input questions
Wet or dry contact, voltage threshold, polarity, isolation, debounce, channel count and the exact event that starts or stops timing.
Binary output questions
Contact or semiconductor output, voltage/current rating, normally open/closed state, isolation and sequence timing.
Auxiliary supply
Confirm whether the test set must power a relay or circuit, and verify voltage, current, grounding and separation from station DC.
Timing reference
Define the injection transition, command or external trigger that begins time measurement and the contact state that ends it.
Map every protection function to a required equipment capability
| Protection question | Typical injected quantities | Typical response | Selection focus |
|---|---|---|---|
| Does an overcurrent element pick up and time correctly? | Single or multi-phase current ramp/step; frequency as required | Pickup, dropout and operate time against the chosen curve | Low/high current accuracy, ramp control, timer and curve module |
| Does directional overcurrent distinguish fault direction? | Current and polarizing voltage with controlled phase relationship | Operate/restrain behavior at defined angle and magnitude | Independent I/V channels, phase accuracy and directional module |
| Does transformer differential protection follow restraint logic? | Two current groups with magnitude, angle, phase compensation and harmonics as required | Operate/restraint boundary and harmonic blocking behavior | Six-current route, output burden, phase control and differential module |
| Do distance zones operate at the expected impedance and time? | Synchronized voltage/current phasors representing points around each zone | Zone pickup, trip, direction and operating time | Voltage/current outputs, phase control, sequence test and distance module |
| Do reclosing and scheme logic follow the sequence? | Analog fault states plus binary breaker, trip, block and command signals | Trip/reclose logic, dead time, lockout and alarms | Binary I/O count, state sequence, timers and report timeline |
Automation should make a controlled plan repeatable
Automated modules can create ramps, state sequences, impedance points, differential characteristics and repeatable reports. Their value depends on whether they support the relay models and test methods used by the organization.
- Confirm relay libraries and whether custom characteristics can be entered and reviewed.
- Check setting-file import formats, firmware compatibility and version control.
- Define manual control, sequencer, ramp, binary search and state-based test needs.
- Confirm report templates, editable asset fields, expected values, tolerances and reviewer sign-off.
- Verify data export, backup, software licensing, language, updates and offline field operation.
- For end-to-end work, define GPS or external time synchronization and communication arrangements.
IEC 61850 Sampled Values and GOOSE testing introduces network interfaces, message configuration, time synchronization and digital-substation workflows. Keep that commercial selection intent on the dedicated IEC 61850 Relay Test Equipment page.
A relay test record must preserve settings, stimulus and response
A “pass” label without the protection setting, injected quantities and tolerance source is difficult to audit. Build the result file around the exact relay and approved configuration.
Asset and relay
Station, bay, protected equipment, relay manufacturer/model, serial, firmware and active setting group.
Test configuration
Test-set model/serial, calibration status, wiring map, analog channels, binary I/O and auxiliary supply.
Stimulus
Current, voltage, frequency, phase, sequence, harmonics, ramp/step method and timer origin.
Response and authority
Pickup, dropout, operate time, contacts, expected value, tolerance source, result and reviewer.
Acceptance criteria should come from the relay settings, coordination study, manufacturer information, approved procedure or project authority. The equipment landing page should not invent a universal pass/fail limit.
Published Wrindu platform matrix for early shortlisting
These public values were reviewed on 29 August 2026. Ask for the current model-specific specification before purchase.
| Published field | RDJB-802M / RDJB-1600M | RDJB-1600Y | RDJB-1600K |
|---|---|---|---|
| Product route | Microcomputer protection relay tester family | Compact relay tester | Intelligent six-phase relay test kit |
| Analog architecture | Published family description supports six-phase voltage and current; verify the exact model column | Published standard configuration: four voltage and three current outputs | Published six voltage and six current simultaneous output |
| Current headline | 0–30 A per phase on published family table; parallel arrangements are model-specific | 40 A/phase and 120 A with three currents in parallel | 30 A/phase published |
| Voltage headline | 0–120 V per phase on published family table | 125 V/phase published | 120 V/phase published |
| Interface route | Built-in Windows; independent or computer-connected operation | Windows 7 and 8.4-inch TFT display | Built-in Windows plus remote laptop/desktop operation |
| Best early fit | Universal family comparison across common conventional relay functions | Compact field route where standard 4V/3I architecture fits the plan | Six-current work including selected transformer differential applications |
| Must confirm | Exact model, simultaneous output, power/duty, binary I/O, timer and software | Exact output combination, burden/duty, binary I/O, auxiliary supply and modules | Simultaneous burden/duty, binary I/O, modules, accessories and synchronization |
Copy this structure into a supplier inquiry
Application: protective relay secondary injection testing
Relay manufacturer, model, firmware and setting format:
Protected asset and protection functions:
Testing stage: commissioning / maintenance / troubleshooting / factory
Required current outputs: count, range, burden and duration:
Required voltage outputs: count, range, burden and duration:
Frequency, phase angle, harmonics and DC requirements:
Binary inputs: wet/dry, voltage and required count:
Binary outputs and auxiliary DC supply:
Pickup, dropout, timing, logic and automated test modules:
Single-ended / end-to-end / GPS synchronization:
IEC 61850 SV or GOOSE required: yes / no
Software language, settings import and report format:
Leads, adapters, calibration documents, quantity and delivery date:Safety and authority note: only qualified personnel should perform relay testing under an approved isolation, CT/VT secondary-circuit, station DC and restoration procedure. Confirm the latest equipment specification and project acceptance criteria before procurement or use.