{
  "id": 34,
  "title": "WJS DSP-controlled Static Voltage Stabilizers",
  "family": "Static Voltage Stabilizers",
  "description": "Contactless compensated AC voltage stabilization using DSP control, SCR switching and transformer compensation.",
  "sections": [
    {
      "heading": "Overview",
      "paragraphs": [
        "Developed from compensated power-stabilization equipment. High-speed DSP computation, fast AC sampling, RMS correction, voltage/current zero-crossing switching and fast voltage compensation combine metering, regulation and fault diagnosis.",
        "Main assemblies are an isolation transformer, SCR thyristor modules, DSP control core, fast voltage-regulation system and protective devices. Brochure describes a contactless, efficient, energy-saving design combining semiconductor switching and transformer technology."
      ]
    },
    {
      "heading": "Applications",
      "paragraphs": [
        "Large electromechanical and metalworking equipment, production lines, lifts, medical equipment, embroidery and textile equipment, air conditioning, broadcasting/television, domestic appliances and building lighting in industry, transport, telecommunications, defence, railway and research applications."
      ]
    },
    {
      "heading": "Product features",
      "paragraphs": [
        "Brochure states efficiency above 98% and low self-consumption; regulation accuracy ±1%; real-time high-resolution RMS voltage/current display with membrane-key operation; independent regulation of the three phases; and a wide input regulation range.",
        "Brochure states a 40 ms stabilization speed, intended for computerized automation, equipment and instruments.",
        "Protection and fault indication include phase loss, incorrect phase sequence, overtemperature, overload, overvoltage, undervoltage, short circuit and blown fuse. Output voltage, overload, over/undervoltage and response speed are presettable within rated limits.",
        "Brochure states momentary overload capability at 100% rated load; continuous operation under difficult grid/load conditions; zero-crossing switching without interrupted current or surge current; and no output-waveform distortion.",
        "No-load losses at rated voltage are stated to be below 0.5%. Bypass permits changeover between stabilized operation and direct mains supply for maintenance.",
        "The brochure links its stated low no-load losses with electricity-bill savings, but supplies no quantified customer saving or measured before/after result."
      ]
    }
  ],
  "specifications": [
    [
      "Rated capacity",
      "10–3000 kVA"
    ],
    [
      "Phase arrangement",
      "3-phase 5-wire"
    ],
    [
      "Nominal input options",
      "220 V / 380 V / 400 V / other"
    ],
    [
      "Input variation options",
      "±15% / ±20% / ±25% / ±30% / other"
    ],
    [
      "Output options",
      "220 V / 380 V / 400 V / other"
    ],
    [
      "Regulation accuracy options",
      "±1% / ±3% / ±5%, adjustable"
    ],
    [
      "Efficiency by rating",
      "10K–50K ≥95%; 50K–100K ≥97%; >100K ≥98%"
    ],
    [
      "Frequency",
      "50/60 Hz"
    ],
    [
      "Response time",
      "<10 ms"
    ],
    [
      "Stabilization time",
      "<100 ms"
    ],
    [
      "Insulation class",
      "F"
    ],
    [
      "Insulation resistance",
      "Complete unit to earth >5 MΩ"
    ],
    [
      "Dielectric withstand",
      "2000 VAC / 1 min, no flashover or breakdown"
    ],
    [
      "Output waveform",
      "No distortion; no added harmonic content"
    ],
    [
      "Momentary overload",
      "2 × rated current"
    ],
    [
      "Display",
      "LCD"
    ],
    [
      "Duty",
      "Continuous long-term operation"
    ],
    [
      "Protection",
      "Overload, overvoltage, undervoltage, short circuit, phase loss, phase sequence, overtemperature, blown fuse"
    ],
    [
      "Cooling",
      "Forced air"
    ]
  ],
  "models": [],
  "tables": [],
  "notes": [
    "Technical values are standard brochure parameters, not contractual acceptance criteria; acceptance follows the technical parameters agreed in the contract. Special requirements require agreement with the supplier.",
    "The source separately states 40 ms stabilization among features and <10 ms response / <100 ms stabilization in the parameter table; both are retained.",
    "Printed capacity formula: P = √m × I2 × U2 × 10⁻³ (kVA). P is rated output capacity; m is phase count (1 single-phase, 3 three-phase); I2 is rated output current in A; U2 is rated output voltage in V, line voltage for three-phase."
  ],
  "slug": "wjs-static-voltage-stabilizers",
  "category": "voltage-regulators",
  "categoryTitle": "Voltage Stabilizers",
  "relatedCategories": [],
  "image": "/catalog/products/wjs-static-voltage-stabilizers.webp",
  "href": "/products/series/wjs-static-voltage-stabilizers",
  "pdfPage": 20,
  "side": "left",
  "sheet": "/catalog/sheets/20-left.webp",
  "sheetWidth": 1006,
  "sheetHeight": 1375
}