20kva pro s voltage regulator

Start by matching your total three‑phase load to a capacity within the PRO‑S line and confirming the system uses 380V three‑phase power. The PRO‑S range spans from 3KVA up to 150KVA, all delivering a stable 380V output with servo regulation for tight voltage control. For a workshop with several machines, a 20KVA unit often provides solid protection and balanced output across all phases, while larger lines may need options in the 30KVA, 60KVA, or higher range. Some models, like the 3KVA option, specify a two‑year warranty for coverage clarity.

The most complex attribute is the combination of wide input voltage range and regulation accuracy. For example, a 3KVA PRO‑S stabilizer can handle 280V–480V input and maintain output at 400V with about ±1–1.5% accuracy. This matters when your supply fluctuates, because tighter regulation reduces voltage swings seen by connected motors and controls. When selecting, map your site’s typical voltage swings to the stabilizer’s range and aim for the smallest possible regulation error to minimize equipment stress.

For a small workshop with several three‑phase machines, a compact 3KVA or 10KVA unit usually provides enough headroom to stabilize typical swings and protect sensitive equipment. For larger industrial lines with heavier loads, stepping up to 30KVA, 60KVA, or 100KVA units gives more margin and reduces the risk of overload during peak demand. The three‑phase, 380V output of these models supports balanced delivery across all connected circuits, helping tools run smoothly and reducing nuisance trips.

Keep ventilation clear and ensure proper airflow around the stabilizer, as overheating can reduce performance. Verify a solid grounding and connect to a dedicated circuit that matches the model’s rating. Avoid loading beyond the stated capacity and schedule periodic inspections of cables and terminals for wear. Installation should be performed by a qualified electrician who understands three‑phase wiring and 380V networks. Regular checks help prevent faults and keep regulated output stable for critical equipment.

Confirm that every connected device is rated for 380V three‑phase operation and that the total load across all three input lines does not exceed the stabilizer’s capacity. Aim to balance loads evenly across the three phases to minimize neutral or phase imbalances. Use appropriate supply cables and protective devices, and ensure the installation location provides adequate clearance for heat dissipation. With these checks, your machinery will experience stable voltage without undue stress.

The PRO‑S Series from Star Trans offers servo‑regulated stabilization to maintain steady voltage for critical equipment, covering capacities from 3KVA to 150KVA with a reliable 380V output. This design minimizes voltage fluctuations that can shorten equipment life and disrupt production. Across the range you’ll find options suited for small to large loads, all built to deliver balanced, smooth voltage and reduce the risk of misoperation from power swings in demanding environments.