KPM KFA 320

The start page groups every test module under five tabs: Basic, Settings, Digital, System and Device. The Basic tab holds AC Test, DC Test, Sequence, Harmonic, Recurrence and Synchro.The top bar shows date, time and battery charge. The bottom bar shows the software version and two switches: Remote Control, for driving the KPM KFA320 relay test kit from a PC, and Aux. DC, which turns on the auxiliary DC output.Start page: test modules grouped under five tabs, with Remote Control and Aux. DC switches at the bottom.

Every test module uses the same layout: the module name at the top, a status area with time, battery, CPU and amplifier temperature and hardware alarms, the main parameter panel in the middle, a binary status bar, and the function dock at the bottom.Alarms such as a current open circuit or voltage short circuit appear as an icon; tap it to read the details.Every test module shares this layout: name, status and alarms, main panel, binary status bar and function dock.

The status bar shows the live ON/OFF state of all four binary inputs and four binary outputs. During a test you can tap a binary output icon to toggle it by hand, which is useful for simulating breaker status during commissioning.Live ON/OFF state of the binary inputs and outputs.

The dock at the bottom of every module gives one-tap access to Start/Stop, Binary (input and output setup), Settings (relay settings for that module), IEC61850, System, Parameter (save and reload the module's setup) and Report (view and save the test report).Function dock: Start, Binary, Settings, IEC61850, System, Parameter and Report.

Open Binary from the dock. Choose OR (any enabled input records a trip) or AND (all enabled inputs must operate), then set each input to respond to both edges, only OFF-to-ON, only ON-to-OFF, or disabled.Binary outputs are set in the same window: initial state, whether they flip at prefault, fault or a binary input, plus delay and hold times.Binary input logic (OR/AND, edge type) and binary output timing.

Under the System tab: Aux. DC Setting, System Config, SV/GOOSE Config, Clock Config and Software. The Aux. DC setting picks a preset or custom auxiliary DC voltage; it works with the optional Aux. DC adaptor, since the KFA320 has no direct auxiliary DC port.System tab: auxiliary DC, system configuration, SV/GOOSE, clock and software settings

Open System → System Config and choose the power amplifier mode: 6 × 20 A, 1 × 60 A + 3 × 20 A, 3 × 20 A + 1 × 60 A, 1 × 60 A + 1 × 60 A or 3 × 40 A. Wire the outputs in parallel as the manual shows for the mode you pick.The same screen sets the current open-circuit alarm threshold and switches between analog output and IEC 61850-9-2 digital output.System Config: amplifier output mode, open-circuit alarm and output type.

Select IEC61850-9-2 as the output type and GOOSE as the binary type in System Config, then open SV/GOOSE Config. Set the CT and VT ratios, sample rate (default 80), sync mode, and which of the four optical ports each control block uses.Tick Output Primary Value to send primary values, and Output Zero Value to keep the link alive while the kit is idle, so the relay does not alarmSV/GOOSE Config: control blocks, sample rate, sync mode and optical port.

In SV/GOOSE Config, tap SCD Import, select the file (the default folder is app_testing_SCD) and Load. Pick the IED under test and tap Connection Map to see its links, then add its SV control block to the test. No SCD file on site? Scout Import listens to the relay's own SV and GOOSE messages and lets you add the control blocks it finds.SCD import: load the substation file and pick the IED under test.

The SV Channel Mapping screen lists each channel parsed from the SCD with its type (delay, voltage or current), the KFA320 output it maps to (groups 1 to 6) and its quality bits.Use Set Inspect to set the test bit on all channels or edit quality on a single channel to test how the relay handles invalid data.SV channel mapping to KFA320 output groups, with quality bits.

In the GOOSE section, add the relay's trip control block to GOOSE Subscribe and map it to a binary input, so the KFA320 times the GOOSE trip just like a hard contact. Add control blocks to GOOSE Publish and map them to an optical port to send breaker status or trips to the relay.GOOSE subscribe: map the relay's trip to a binary input for timing

Open System → Clock Config and choose the clock source: GPS, optical IRIG-B or electrical IRIG-B, plus the time zone and external trigger settings. Once locked, the title bar time matches the source and a sync icon appears.Clock Config: GPS, optical or electrical IRIG-B, time zone and triggers.

Yes. Under System → Software, Phase Label changes the name and waveform colour of each phase in every group, and Binary Label changes the binary input names. The Normal tab sets default rated voltage, current and frequency, language, screen brightness and key sound.Phase Label: rename phases and set waveform colours.

Open AC Test, set the magnitude, angle and frequency of each voltage and current, and select which channels are variables and how they step. Run it manually with the up and down arrows, or in Auto mode to ramp until the relay trips.Quick buttons apply rated values, set equal values, zero, maximum, or positive or negative sequence in one tap, and the vector diagram updates as you type.AC Test: set each channel, choose variables, and watch the vector diagram.

Turn on Test Return in Auto mode. When the relay trips, the KFA320 ramps the variable back until the relay resets, records both values and times, and calculates the drop-off ratio as return value ÷ action value.The result table lists binary input, action time, return time, action value, return value and return factor.Results: action and return values, times and the calculated return factor.

Open DC Test and set the DC amplitude of each voltage and current channel. It works like the AC test, with manual or automatic ramping, Action Stop and Test Return, and is used for DC relays and transducers.DC Test: manual or automatic DC ramping.

Open Sequence and add states (32 or more). Each state has its own voltages, currents, angles, frequency, binary output settings and trigger to move to the next state. You can duplicate, insert, disable or reorder states.Choose Absolute output to use each state's set angles, or Continuous to keep the waveform continuous across states.Sequence: each state has its own outputs, binary settings and trigger.

Five: Time (after a set duration), Binary (when the set binary input logic operates), Binary + Time (whichever comes first), Keypress (waits for you to confirm), and GPS/IRIG-B (at an exact clock time, for synchronised end-to-end tests).The result view records the action time of every binary input in every state.Sequence results: action time of each binary input in each state.

Open Harmonic. For each phase set the fundamental and up to six harmonics, each at any order from the 2nd to the 32nd, with its own magnitude and angle. The screen shows the resulting RMS value, THD and waveform.Select a harmonic magnitude or angle as the variable to ramp it automatically until a restraint element operates.Harmonic: up to six harmonics per phase, 2nd to 32nd order, with RMS and THD.

Copy the .cfg and .dat files to the kit, open Recurrence, tap Load Data and select the file. The software maps channels automatically and scales primary values to secondary using the file's ratios.You can remap channels, adjust ratios, choose the interpolation method, add a prefault period, repeat part of the fault, and trigger playback by time, binary input or GPS.Recurrence: load a COMTRADE .cfg/.dat file for playback.

The Wave View tab shows the waveform loaded from the COMTRADE file. Zoom and shift left or right to check the fault before you play it, and switch between output groups.Wave View: check the fault waveform before playback.

Open Synchro and set the system side and the side to be synchronized: wiring, voltage, angle and frequency. Choose the test type: voltage action, frequency action, lead angle and lead time, electrical zero, voltage and frequency pulse width, auto-synchronization or frequency acceleration.Binary inputs 1 to 4 take the close command; inputs 5 to 8 take the raise and lower signals for voltage and frequency.Synchro: set both sides and choose the test type.

It plots voltage difference against frequency difference with the relay's tolerance window, and a vector view of both sides, so you can watch the operating point move into the closing zone during the test.Synchro characteristic: the operating point moving into the closing zone.

Open Differential → Settings and enter the winding type (2 or 3 winding), phase correction method, reference current (amps or Ie), CT polarity, Idiff> and Idiff>> settings, balance factors and the restraint current formula.The manual includes a reference table of restraint formulas and balance factors for common relay models, because each manufacturer calculates them differently.Differential settings: windings, correction, Idiff>, Idiff>> and balance factors.

Add the tests you need to the list: Idiff> and Idiff>> check or search, differential curve scan, and harmonic restraint scan. Enter the inflection points and slopes from the relay settings and the software draws the characteristic.It runs the tests from top to bottom and plots each operating point on the curve, so you can see whether the relay operated inside or outside the expected boundary.Differential characteristic: inflection points, slopes and test points.

Open SttDistance → Settings. Enter line length and angle, the ground (L-N) and phase (L-L) reaches and times for zones 1 to 5, and the zero-sequence compensation: KL for some relay families, KR/KX for others.Distance settings: line data, zones 1 to 5 and zero-sequence compensation.

Tick the impedance factors (0.7, 0.95, 1.05, 1.2), the zones (I to V), the fault types (AN to ABC) and the direction, then tap Add. Each combination becomes a test point.The list shows each point, for example 2 × 0.95, with its impedance and the measured trip time. Untick a point to skip it on a re-test.Adding distance test points: factor, zone, fault type and direction.

Use DistanceZm. Enter the relay settings, choose the Zm factor (0.9 for no operation, 1.1 for operation, or a custom multiple), the direction and fault type, then add the points.This element can't be tested by conventional impedance methods, so the module calculates the special fault quantities it needs.DistanceZm: Zm factor, direction and fault type.

Open OvercurSegment → Settings and enter up to five overcurrent zones with their times. Choose test factors (0.7, 0.95, 1.05, 1.2), zones and fault types, then Add. Tick Directional Overcurrent to also apply fault voltages.The list shows each point's fault current, type and measured trip time.OvercurSegment: factors, zones and fault types.

Use OvercurZero. Enter up to five zero-sequence zones and times, pick the test factors and single-phase fault types (A-N, B-N, C-N), add the points and run. It works like the Overcur Segment module.OvercurZero: zero-sequence zones and single-phase faults.

Use OvercurVZLock. Enter the negative-sequence voltage, low-voltage, current and angle settings, then add tests for LV Action (undervoltage unblocking), VZ Action (negative-sequence voltage), Current and Sensitivity (maximum sensitivity angle).Each test ramps its variable from a blocked value to an unblocked one until the relay trips.OvercurVZLock: ramping from blocked to unblocked voltage.

Use OvercurAngle. Enter the overcurrent and zero-sequence settings and angles, then add OvercurAngle, OvercurCurrent, ZeroCurAngle or ZeroCurCurrent tests. Each ramps from a non-operating value towards the operating zone in steps (typically 0.1° or 0.1 A) until the relay trips.OvercurAngle: angle ramp from non-operating to operating zone.

Open Reclosure → Settings and enter the line data, reclose settings (voltage check, sync angle, VT and CT position) and zero-sequence compensation. Wire trip A, B, C to binary inputs 1 to 3 and the reclose contact to input 4.Add distance, overcurrent or zero-sequence fault points as temporary or permanent faults. The software runs prefault, fault, reclose and permanent trip, and can set the closing angle and add a DC offset.Reclosure: prefault, fault, reclose and permanent trip in one test.

Use Slip Frequency. Its tests are Frequency (trip frequency at a set df/dt), Time (operating time from a measured trip frequency), df/dt Value (the blocking rate), Under-I Latch and Under-U Latch.Each cycle runs prefault, a frequency slide and reset, stepping the variable until the relay operates.Slip Frequency: frequency, time, df/dt and latch tests.

Use Slip Voltage, which mirrors Slip Frequency for voltage: Voltage (trip voltage at a set dv/dt), Time, dv/dt blocking value and Under-I Latch. Measure the trip voltage first, then use it as the timing voltage for the Time test.

Connect the fibre to an optical port, choose SV or GOOSE and tap Start. The sniffer lists the messages on that port with their datasets, so you can confirm what the relay or merging unit is really sending before you configure a test.SV/GOOSE Sniffer: see what is really on the fibre

Open Digital → Optical Power with the fibre connected. The screen shows transmit and receive power for each port, so you can find a dirty connector or weak link.Optical Power: transmit and receive power per port.

Copy the upgrade file to a USB drive, open Device → Upgrade, tap Select, choose the file and tap Upgrade. A progress bar shows the upgrade. Do not switch the kit off until it finishes and restarts.Upgrade: select the file from USB and start.

Device → Battery shows total voltage, cell voltages, current, rated and remaining capacity, cycle count and charge state, so you know before a site visit whether the battery will last the day.Battery info: voltages, capacity and cycle count.

Open Device → Machine and tap IP Address. The factory address is 192.168.1.123. Change it to the same subnet as your laptop or LAN, with the last number different from every other device on the network.The Machine screen also shows the device ID, MAC address and firmware versions, which our support team may ask for.Machine: device details and the IP Address button.

Yes. The manual walks through an overcurrent zone test on a numerical line protection relay: wiring, relay settings, entering the zones in OvercurSegment, adding 0.95 and 1.05 points for each zone, and reading the results and report. KPM engineers can run the same example with your team on your own relay.Overcurrent example: time trigger, fault times and directional voltages set for the test.

Yes. The manual shows a distance zone test on a line differential and distance relay: wiring, zone settings, zero-sequence compensation, adding 0.7, 0.95 and 1.05 points for each zone and fault type, and the trip-time results.Distance example: zone settings entered from the relay.

Yes. KPM provides hands-on training at your site as part of supply, or as a separate chargeable visit, covering the modules your team uses on your own relays. Call 0124 4001088 or email sales@kpmtek.com to arrange it, or to request a demonstration.