Machine Power Page

Each machine has a dedicated Power page at /machines/:machineID/power. It gives engineers a full electrical picture of a single machine, separate from the plant-wide Main Electricity view. The page has four tabs. A status line at the top shows the connection state: Connecting to device…, Restoring connection…, Device connected, or Device offline.

---

Real-Time Monitoring

Phases R, S, and T are shown as L1, L2, and L3, plus the total (SUM). For each, the page shows:

• Voltage and current
• Active, apparent, and reactive power
• Power factor and frequency
• Voltage THD and current THD bars
• A power-factor gauge
• A live frequency chart

THD Color Bands

Trend Analysis

Hourly trend charts for voltage, current, power, and power factor.

Data Grid

All metrics in a single table, with min, max, and average per phase and color-coded values.

---

Accumulators

Accumulators are the energy counters kept for each machine:

• Active energy: import, export, total
• Reactive energy: inductive, capacitive, total
• Apparent energy

---

Per-Machine Alert Thresholds

Alerts can be configured for:

• Voltage L-N and Voltage L-L
• Current L1, L2, and L3
• Power Factor
• Voltage THD and Current THD

Each parameter has an enabled switch, an optional minimum and maximum, a severity (warning or critical), and a hysteresis percentage.

Templates

Choose a template, then adjust any value:

• Voltage and power-factor limits are critical severity.
• THD limits are warning severity.
• Current limits have no default and are set per machine capacity.

Hysteresis

Hysteresis prevents alerts from flickering on and off. After a limit is breached, the value must recover past the limit by the hysteresis percentage before the alert clears.

---

Alert History

The Alert History tab lists incidents with:

• Parameter and phase
• Limit, actual value, and peak value
• Severity
• Start, end, and duration

Filter by All, Active, or Resolved. Summary charts show the status split, severity mix, and recent incident trend.