| --- |
| type: Parquet |
| title: dim_signal_info |
| description: Signal catalogue mapping signal_id to metric name, electrical phase, and unit |
| resource: ./dim/dim_signal_info.parquet |
| tags: [dimension, signal, catalogue] |
| timestamp: 2026-07-22T00:00:00Z |
| --- |
| |
| # dim_signal_info |
|
|
| One row per (signal name, phase) combination. Encodes what each `value_float` in [fact_energy_15m](fact_energy_15m.md) represents. |
|
|
| | Column | Type | Description | |
| |--------|------|-------------| |
| | `signal_id` | INTEGER | PK. Surrogate key | |
| | `signal_name` | VARCHAR | Metric name: `energy_kwh_15m`, `demand_kw`, `avg_power_kw_15m` | |
| | `phase` | VARCHAR | Electrical phase: `L1`, `L2`, `L3`, or `ALL` (synthetic total) | |
| | `unit` | VARCHAR | Physical unit of the measurement value | |
| | `description` | VARCHAR | Human-readable description of the signal | |
|
|
| **Row count:** 12 (3 signals x 4 phases) |
|
|
| **Signal catalogue:** |
|
|
| | signal_id | signal_name | phase | unit | description | |
| |-----------|-------------|-------|------|-------------| |
| | 1 | `energy_kwh_15m` | L1 | kWh | Energy consumed during window (phase L1) | |
| | 2 | `energy_kwh_15m` | L2 | kWh | Energy consumed during window (phase L2) | |
| | 3 | `energy_kwh_15m` | L3 | kWh | Energy consumed during window (phase L3) | |
| | 4 | `energy_kwh_15m` | ALL | kWh | Energy consumed during window (all phases) | |
| | 5 | `demand_kw` | L1 | kW | Average demand over window (phase L1) | |
| | 6 | `demand_kw` | L2 | kW | Average demand over window (phase L2) | |
| | 7 | `demand_kw` | L3 | kW | Average demand over window (phase L3) | |
| | 8 | `demand_kw` | ALL | kW | Average demand over window (all phases) | |
| | 9 | `avg_power_kw_15m` | L1 | kW | Reliability-weighted mean power (phase L1) | |
| | 10 | `avg_power_kw_15m` | L2 | kW | Reliability-weighted mean power (phase L2) | |
| | 11 | `avg_power_kw_15m` | L3 | kW | Reliability-weighted mean power (phase L3) | |
| | 12 | `avg_power_kw_15m` | ALL | kW | Reliability-weighted mean power (all phases) | |
|
|
