Quality
Quality and testing
From the first wire to the last maintenance visit.
| Stage | What we do |
|---|---|
| Identification | Every device and wire is identified by a prefix-ID-suffix rule. |
| Wiring | Control wire colour and size follow circuit type and voltage: 0.75 mm² to 50 V, 1.0 mm² from 50 to 240 V, 1.5 mm² above 240 V and for potential circuits, 2.5 mm² for current-transformer secondaries. Capacitor banks are fused and cabled from a kvar table. |
| Factory acceptance test | Visual, mechanical and electrical checks. Insulation test at 1000 V between phases and to earth. A 10-second dielectric test. Meters checked on their own forms with error percentage and sign-off. |
| Installation | Check delivery and report damage within a week. Room ready: plastered, doors fitted, openings sealed, climate, lighting and clearances. Pre-check joints, barriers and earth. |
| Commissioning | In order: insulation test, functional simulation, logic against drawings, energise, then switch circuits one by one. |
| Maintenance | Periodic tightness check. Find the cause of a fault before any reset. |
