{
  "id": 32,
  "title": "SVC Three-phase Automatic Voltage Stabilizers",
  "family": "Automatic AC Voltage Stabilizers",
  "description": "Three-phase servo-controlled automatic AC voltage stabilizers for industrial, commercial and institutional loads.",
  "sections": [
    {
      "heading": "Overview",
      "paragraphs": [
        "A contact-type variable autotransformer, servo motor and automatic control circuit continuously stabilize the supply. When mains voltage or load changes, a sampling/control circuit drives the servo motor to reposition the carbon brush and bring output voltage back to its rated value.",
        "Brochure states high efficiency, reliable long-duration operation, undistorted waveform, short-delay and overvoltage protection. Long-delay and undervoltage protection can be added on request.",
        "The brochure describes the series as an energy-saving design developed with reference to international products and domestic operating conditions, offering large capacity, wide regulation range, high accuracy, extensive protection, compact size, low mass and convenient operation and maintenance."
      ]
    },
    {
      "heading": "Applications",
      "paragraphs": [
        "Industrial and mining enterprises, postal and telecommunications facilities, railways, construction sites, schools, hospitals, hotels, defence and research facilities. Suitable loads include computers, precision machine tools, CNC machinery, CT equipment, precision instruments, test equipment, lifts, imported equipment and production lines."
      ]
    }
  ],
  "specifications": [
    [
      "Input voltage",
      "3-phase 280–430 V, 3-phase 4-wire"
    ],
    [
      "Output voltage",
      "3-phase line 380 V; phase 220 V"
    ],
    [
      "Voltage regulation accuracy",
      "Phase voltage 220 V ±3% and 110 V ±2%"
    ],
    [
      "Frequency",
      "50/60 Hz"
    ],
    [
      "Adjustment time",
      "<1 s for a 10% input-voltage change"
    ],
    [
      "Overvoltage protection",
      "246 V ±4 V"
    ],
    [
      "Ambient temperature",
      "−10 to +40°C"
    ],
    [
      "Temperature rise",
      "<60°C"
    ],
    [
      "Waveform distortion",
      "No additional waveform distortion"
    ],
    [
      "Load power factor",
      "0.8"
    ],
    [
      "Dielectric withstand",
      "1500 VAC / 1 min, no flashover or breakdown"
    ],
    [
      "Insulation resistance",
      "Three-phase unit to earth >2 MΩ"
    ]
  ],
  "models": [
    {
      "designation": "SVC-6kVA",
      "values": [
        "3-phase 4-wire",
        "150–250",
        "280–430",
        "220 ±2%",
        "380 ±3%",
        "9",
        "320×350×710"
      ]
    },
    {
      "designation": "SVC-9kVA",
      "values": [
        "3-phase 4-wire",
        "150–250",
        "280–430",
        "220 ±2%",
        "380 ±3%",
        "13.5",
        "320×350×710"
      ]
    },
    {
      "designation": "SVC-15kVA",
      "values": [
        "3-phase 4-wire",
        "150–250",
        "280–430",
        "220 ±2%",
        "380 ±3%",
        "22.5",
        "320×350×710"
      ]
    },
    {
      "designation": "SVC-20kVA",
      "values": [
        "3-phase 4-wire",
        "150–250",
        "280–430",
        "220 ±2%",
        "380 ±3%",
        "30",
        "460×415×810"
      ]
    },
    {
      "designation": "SVC-30kVA",
      "values": [
        "3-phase 4-wire",
        "150–250",
        "280–430",
        "220 ±2%",
        "380 ±3%",
        "40",
        "460×415×810"
      ]
    },
    {
      "designation": "SVC-50kVA",
      "values": [
        "3-phase 4-wire",
        "150–250",
        "280–430",
        "220 ±2%",
        "380 ±3%",
        "76",
        "600×550×1020"
      ]
    },
    {
      "designation": "SVC-60kVA",
      "values": [
        "3-phase 4-wire",
        "150–250",
        "280–430",
        "220 ±2%",
        "380 ±3%",
        "91",
        "600×550×1020"
      ]
    }
  ],
  "tables": [
    {
      "caption": "Ratings and dimensions",
      "columns": [
        "Model",
        "Input arrangement",
        "Input phase voltage (V)",
        "Input line voltage (V)",
        "Output phase voltage (V)",
        "Output line voltage (V)",
        "Output current (A)",
        "Overall dimensions (mm)"
      ],
      "rows": [
        [
          "SVC-6kVA",
          "3-phase 4-wire",
          "150–250",
          "280–430",
          "220 ±2%",
          "380 ±3%",
          "9",
          "320×350×710"
        ],
        [
          "SVC-9kVA",
          "3-phase 4-wire",
          "150–250",
          "280–430",
          "220 ±2%",
          "380 ±3%",
          "13.5",
          "320×350×710"
        ],
        [
          "SVC-15kVA",
          "3-phase 4-wire",
          "150–250",
          "280–430",
          "220 ±2%",
          "380 ±3%",
          "22.5",
          "320×350×710"
        ],
        [
          "SVC-20kVA",
          "3-phase 4-wire",
          "150–250",
          "280–430",
          "220 ±2%",
          "380 ±3%",
          "30",
          "460×415×810"
        ],
        [
          "SVC-30kVA",
          "3-phase 4-wire",
          "150–250",
          "280–430",
          "220 ±2%",
          "380 ±3%",
          "40",
          "460×415×810"
        ],
        [
          "SVC-50kVA",
          "3-phase 4-wire",
          "150–250",
          "280–430",
          "220 ±2%",
          "380 ±3%",
          "76",
          "600×550×1020"
        ],
        [
          "SVC-60kVA",
          "3-phase 4-wire",
          "150–250",
          "280–430",
          "220 ±2%",
          "380 ±3%",
          "91",
          "600×550×1020"
        ]
      ]
    }
  ],
  "notes": [
    "The main specification table and model table use different accuracy/input descriptions; both original statements are retained."
  ],
  "slug": "svc-three-phase-voltage-stabilizers",
  "category": "voltage-regulators",
  "categoryTitle": "Voltage Stabilizers",
  "relatedCategories": [],
  "image": "/catalog/products/svc-three-phase-voltage-stabilizers.webp",
  "href": "/products/series/svc-three-phase-voltage-stabilizers",
  "pdfPage": 19,
  "side": "left",
  "sheet": "/catalog/sheets/19-left.webp",
  "sheetWidth": 1006,
  "sheetHeight": 1375
}