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TVR-Line Three Phase Line Voltage Regulator01.jpg

Three Phase Line Voltage Regulator SVR 2.5-34.5kV from China Suppliers and Factory - IEEE Certified

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Model Series

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SVR

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Rated Voltage 

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2.5～34.5kV

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Standard

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 IEEE C57.12.20

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Warranty

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Two years

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Application

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Outdoor/Indoor

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, Discover the SVR series, one of the leading products from top China suppliers and manufacturers in the electrical industry. Designed to operate efficiently at a rated voltage of 2.5 to 34.5kV, the SVR series meets the stringent IEEE C57.12.20 standard, ensuring reliability and safety for your electrical applications. With a robust two-year warranty, this versatile product is suitable for both outdoor and indoor use, making it an ideal choice for diverse environments. Trust in quality from a reputable factory that prioritizes excellence and innovation in every detail
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    Product Details

    The actual voltage from the rated voltage of the circuit size is an important measure of power quality, also is a important guarantee of power supply reliability and voltage quality.

    General IconGeneral

    Ideally the distribution lines should to be able to keep the whole line of constant voltage, but in actual, the impedance of the distribution line will result in that the voltage of end and terminal is not same (Figure 1).

    TVR-Line Three Phase Line Voltage Regulator01

    Since the line voltage can not be kept constant, when the actual voltage levels exceed the normal range of fluctuation of voltage allowed, it will seriously affect the normal use of the system and electrical equipment.

    ⚡
    Electric power system: Low voltage will affect the power supply equipment output, reducing supply reliability, but also affect their own economic power, voltage drops particularly severe, even voltage collapse may occur, the frequency of loss and blackouts and other incidents.
    ⚙️
    Electric equipment: Voltage quality have an impact on safe and economic operation of various types of equipment such as the asynchronous motor, for example, if the voltage decreases, the voltage will reduce torque so that the slip is increased, so that the stator and rotor current significantly increases, resulting in motor temperature liter rise, possibly even burning motor; on the contrary, when the voltage is too high, due to the excitation current and iron loss greatly increased, resulting in motor overheating, efficiency is reduced.
    💡
    Low voltage will affect the use of incandescent lamps. Voltage 10% lower than the rated voltage, incandescent light flux is reduced by 30% higher voltage than the rated voltage of 10%, the lamp life is reduced by half.
    📱
    Low voltage will also affect the air conditioning running, cell phone charger, TV signal reception and other problems.
    📉
    Power system losses: In conveying power certain time, the square of system losses and operating voltage, if the voltage decreases, the current increases and the loss, the loss will become larger system.
    Work Principle IconWork Principle

    TVR-line voltage regulator is a special design autotransformer with on-load tap changer, it can automatically "monitoring" and smoothly adjusts the output voltage, and also guarantee the output voltage within the voltage requirement. 27 taps regulation can meet every step 0.75% regulation accuracy. See blow figure 5

    TVR-Line Three Phase Line Voltage Regulator02

    In Figure 6, is an utility sample for a factory which require 400V electric power, but the power line is not stably in the summer because the load is 120% of rated capacity, so the power to the factory is lower than 360V, all the electric equipments in the factory can not use. After install Farady auto voltage regulator, it can adjust the power line voltage from 8038V to 11000V and keep it stable with 2% accuracy, so the power to factory can be keep at 400V(+8V accuracy).

    Work Condition IconWork Condition
    • Below 3000 meter (customizable)
    • Temperature: -25°C to 65°C
    • Humidity: < 90% (at 25°C)
    • Pollution class: III class
    • Rating voltage: 11/22/33kV
    • Capacity: 500kVA ~ 6300kVA
    • Frequency: 50/60Hz
    • Vector group: 3phase 3wire star/delta
    • Tap positions: 9/11/13/17/27/32
    • Cooling: ONAN
    • PT: 10000/100V 50VA
    • Regulation range: Up to +30%
    Structure IconVoltage Regulator Structure
    Voltage Regulator Structure

    ON LOAD TAP CHANGER

    VACUUM TYPE
    VACUUM TYPE ON LOAD TAP CHANGER

    Regulator Vacuum type On load tap changer is of selector switch structure, which combines the functions of diverter and selector. The tap changer is mounted to the transformer tank cover by its head. Maintenance-free up to 100,000 tap-change operations. Max current up to 600A, Max voltage up to 145kV.

    OIL IMMERSED TYPE
    OIL IMMERSED TYPE ON LOAD TAP CHANGER

    Typical combined-structure tap changer applicable in oil-immersed transformer. Electrical life arrives 50,000 times; Mechanical life arrives 500,000 times. Max current up to 400A, Max voltage up to 35kV. More economical than Vacuum type.

    Intelligent Controller IconIntelligent Controller
    Intelligent Controller
    ✅ High accuracy: 27 taps regulation.
    ✅ Long work life: Nearly a million operations.
    ✅ Maintenance-free: High IP protection degree.
    ✅ Flexible: Mounting within lines/substations.
    ✅ SCADA Ready: RS232 adapter included.
    ✅ Low loss: Maximized reduction of iron loss.
    FK Function IconFK Function Features
    🔹 Friendly user interface for easy data browsing.
    🔹 Easy settings for voltage, bandwidth, and delay.
    🔹 Full measurement: load voltage, current, power factor, etc.
    🔹 Automatic forward/reverse regulation for ring networks.
    🔹 Remote control via RS232/RS485 interfaces.
    Project IconProject & Installation
    Project Image
    Installation Image

    Frequently Asked Questions

    What is the main purpose of the TVR-line voltage regulator?
    It is designed to automatically monitor and adjust output voltage on distribution lines, ensuring stable power supply even when line impedance causes voltage fluctuations.
    How accurate is the voltage regulation?
    The system utilizes a 27-tap regulation mechanism, providing a high step accuracy of 0.75% per tap to maintain stable operation.
    What are the differences between Vacuum and Oil Immersed tap changers?
    Vacuum types are maintenance-free up to 100,000 operations and handle higher voltages (up to 145kV), while Oil Immersed types are a more economical choice for systems up to 35kV.
    Can this regulator be integrated into a SCADA system?
    Yes, the intelligent controller includes RS232 and RS485 interfaces with multiple communication protocols for seamless integration into distribution automation networks.
    What happens to electrical equipment if the voltage is too low?
    Low voltage can reduce motor torque leading to overheating, decrease light flux in lamps by up to 30%, and cause malfunctions in air conditioning and electronic chargers.

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