Device Management

Detego's device management system lets you model the physical equipment that produces your COMTRADE recordings. Instead of managing a flat list of files, you can organize recordings under devices (relays, meters, fault recorders) grouped into substations.

Each device stores:

• Identity — name, type, make, model, and COMTRADE device ID
• Protection settings — CT/VT ratios and line impedance, applied as defaults to new recordings
• Recording history — all recordings linked to that device, with quick access to open or analyze them

Substations group related devices under a single location with a color, voltage level, and geographic label. This mirrors the physical hierarchy of your power system and makes it easy to find recordings by equipment.

The Dashboard is the device-centric view of your library. It displays substations as expandable panels, each containing device cards in a grid layout. Unassigned devices appear in a separate section at the bottom.

The dashboard header shows the total count of substations and devices, along with a search bar that filters by device name, make/model, or substation name.

After signing in, Detego can take you to either the Dashboard (device-centric view) or the Recordings page (file-centric view). Both pages display a small house icon toggle next to the page subtitle that lets you set that page as your default homepage.

• Dashboard is best if you work with a fixed set of devices and want to see equipment status at a glance
• Recordings is best if you primarily work with uploaded files and prefer to browse chronologically

The preference is stored in a cookie and persists across sessions.

Click New Substation in the dashboard header to open the creation modal. Each substation has:

• Name (required) — for example, "Substation Alpha" or "Springfield 22kV"
• Location (optional) — a geographic label such as "Site A" or "Building 3"
• Voltage level (optional) — displayed as a badge, e.g. "132 kV"
• Color — choose from preset accent colors. The color appears in the substation header gradient and as the accent bar on all device cards inside it

To edit a substation, click the three-dot context menu on the substation header and select Edit. To delete a substation, choose Delete from the same menu. Deleting a substation removes it from the dashboard but does not delete the devices inside — they become unassigned.

There are two ways to create a device:

1. New Device button in the dashboard header — creates a device that starts unassigned (you can later assign it to a substation)
2. Add Device card inside a substation panel — creates a device already linked to that substation

The device creation modal asks for:

• Name (required) — e.g. "Bay 1 REL670"
• Type — Protection Relay, Power Meter, Fault Recorder, or Other
• Make (optional) — manufacturer, e.g. "ABB"
• Model (optional) — model number, e.g. "REL670"
• COMTRADE Device ID (optional) — the device identifier embedded in COMTRADE file headers. Setting this enables automatic matching on future uploads

To edit or delete a device, open its detail panel and use the Edit or Delete buttons in the header.

Click any device card to open the Device Detail Panel, a full-screen overlay with four sections accessible from a sidebar:

• Overview — device identity, manufacturer, model, firmware, and notes
• Recordings — all recordings linked to the device, with quick actions to open, share, or unlink each one
• Settings — comprehensive protection settings stored on the device (CT/VT ratios, line impedance, distance zones, overcurrent stages, differential characteristic, and transformer configuration)
• Import Relay Settings — upload an XRIO file to automatically extract and apply protection settings from your relay

The Settings section on the device detail panel stores comprehensive protection settings that serve as defaults for recordings linked to this device. Settings are organized into the following categories:

CT/VT Ratios

• CT Primary / Secondary — global current transformer ratio (e.g. 1000 A / 1 A), used as the default for all current channels
• VT Primary / Secondary — global voltage transformer ratio (e.g. 132000 V / 110 V), used as the default for all voltage channels
• Per-channel overrides — optional per-channel CT/VT ratios keyed by channel name. When a recording is linked to this device, Detego matches channel names from the COMTRADE file to the device's per-channel overrides and applies them automatically. This is important for relays with multiple CT groups — for example, a transformer differential relay where phase CTs (1500:5) and neutral CTs (100:1) have different ratios

Line Impedance

• Z1 Magnitude and Angle — positive-sequence line impedance
• Z0 Magnitude and Angle — zero-sequence line impedance
• Line Length — physical line length in km

Distance Protection

• Characteristic type — mho or polygonal
• Protection zones — up to 5 zones, each with X-reach, R-reach (phase and ground), characteristic angle, sigma tilt angle, time delay, and direction (forward/reverse)
• Starting zones — impedance starting zone settings (quad or circle type)
• Load encroachment — forward and reverse load blinder angles and reaches
• Extended zones — additional zones for auto-reclose schemes
• Ground compensation — kG factor mode and values

Overcurrent Protection

• Phase stages — multiple overcurrent stages, each with curve type (IEC SI/VI/EI/LTI, IEEE MI/VI/EI, or Definite Time), pickup current in primary amps, and TMS or time delay
• Earth fault stages — separate stages for earth fault protection with the same settings

Differential Protection

• Dual-slope characteristic — Is1 pickup, K1 first slope, Is2 breakpoint, K2 second slope
• High-set elements — instantaneous differential pickup thresholds
• Harmonic blocking — 2nd and 5th harmonic restraint percentages

Transformer Configuration (for transformer differential relays)

• Winding configuration — 2-winding or 3-winding
• Rated MVA — transformer rated power
• HV/LV/TV connections — winding connection types (Y, D, Z) and nominal voltages
• Vector group — LV side clock number (0-11)
• Per-winding CTs — individual CT ratios for each transformer winding

When a recording is linked to a device, the device's settings are copied to the recording as initial values. You can then customize them per-recording in the viewer without affecting the device template.

XRIO (eXtended Relay Interface by OMICRON) is an XML-based file format that stores protection relay settings. XRIO files are exported from protection testing tools such as the OMICRON Protection Testing Library (PTL) and CMC test sets. Each file contains the complete configuration of a relay — CT/VT ratios, protection zone reaches, overcurrent curves, differential characteristic parameters, and more.

How to upload an XRIO file

Open the Device Detail Panel for any device and navigate to the Import Relay Settings section. The import follows a three-step wizard:

1. Upload — drag and drop an .xrio file, or click to browse. The file is parsed entirely in the browser; nothing is uploaded to a server during parsing
2. Detection — Detego detects the relay model and manufacturer from the file metadata and checks whether a converter (adapter) is available for that relay family. If a converter is found, you see a green confirmation with the adapter name
3. Review & Apply — a split-pane view shows all raw parameters on the left (browsable as a tree) and the extracted settings on the right. Click Apply to Device to save the extracted settings to the device

What gets extracted

When a converter is available, Detego automatically extracts:

• CT/VT ratios — primary and secondary values from the relay's actual configuration (not just nominal defaults). For transformer differential relays with per-winding CTs (e.g., Schneider P64x with T1/T2/T3 winding CTs, or ABB RET620 with W1/W2), the per-winding ratios are stored on the device and can be assigned to individual channels using the Per-Channel Ratios section in the viewer's Primary/Secondary scaling dropdown
• Distance protection zones — X-reach, R-reach, characteristic angle, trip time, and direction for each zone, plus starting zones and load encroachment settings
• Line impedance — derived from zone 1 reach and ground compensation factor (kG)
• Overcurrent stages — pickup current, curve type, and TMS/time delay for both phase and earth fault stages
• Differential characteristic — dual-slope parameters, high-set thresholds, and harmonic blocking percentages
• Transformer configuration — winding arrangement, rated MVA, connection types, vector groups, and per-winding CT ratios
• Fault location parameters — line impedance and CT/VT ratios are automatically shared with the fault location module

Supported relay families

Detego currently includes converters for the following relay families:

• Schneider Electric MiCOM P43x — distance protection relays (P432–P439). Extracts polygonal distance zones, starting zones, load encroachment, overcurrent stages, and ground compensation
• Schneider Electric MiCOM P54x — distance protection relays (P543, P545, P546). Extracts mho distance zones, overcurrent and earth fault stages, and CT/VT overrides
• Schneider Electric MiCOM P64x — transformer differential relays (P642, P643). Extracts differential characteristic, harmonic blocking, transformer winding configuration, overcurrent backup stages, and per-winding CTs
• ABB RET620 — transformer differential relay. Extracts differential protection settings, overcurrent backup, transformer configuration, and winding CTs

How imported settings flow into analysis

After applying an XRIO import, the extracted settings become the device's protection templates. When you open a recording linked to that device in the viewer:

• The Distance Protection tab uses the imported zones, line impedance, and characteristic type to draw protection zones on the R-X diagram
• The Overcurrent tab uses the imported pickup currents and curve types to plot time-current characteristics
• The Differential tab uses the imported dual-slope parameters and harmonic blocking thresholds
• The Fault Location tab uses the imported line impedance and CT/VT ratios for distance-to-fault calculations
• The AI Analysis engine receives the imported settings as context, enabling it to assess whether protection operated correctly against the configured reach and timing

The full XRIO parameter tree is also stored on the device, so you can browse all raw relay parameters at any time by returning to the Import Relay Settings section.

There are multiple ways to link a recording to a device:

1. From the device detail panel — click "Link existing recording" at the bottom of the Recordings tab, then search and select a recording from your library
2. From the recordings table — hover over a recording row and click the Link to device icon (chain link icon) to assign it to a device
3. Auto-suggest on upload — when you upload a COMTRADE file whose device ID matches a device in your library, Detego shows a banner suggesting the link. Click "Link" to confirm

Unlinking a recording removes the device association but does not delete the recording itself.

If you have existing recordings that aren't linked to any device, the auto-organize prompt appears at the bottom of the dashboard. It analyzes the COMTRADE metadata (station name, device ID) across your unlinked recordings and groups them into suggested substations and devices.

Click Organize to open the Migration Assistant modal, which shows:

• Suggested groupings — recordings grouped by shared station name and device ID
• Preview of proposed substations and devices that will be created
• Confirm button to apply the groupings in one step

The migration assistant is non-destructive: it only creates new substations/devices and links recordings. It does not modify or delete any existing data.