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3Phase TNS/SJW-10KVA 15KVA 20KVA 25KVA 30KVA 40KVA 50KVA 60KVA 80KVA 100KVA SVC Servo Voltage Stabilizer Regulator

Product Description

Company Information

Product Description

A 3-phase voltage stabilizer (also called a three-phase automatic voltage regulator or AVR) is an electrical device designed to maintain a stable and balanced output voltage across all three phases of a three-phase AC power system—despite fluctuations, sags, surges, or imbalances in the incoming utility supply.

It is essential in industrial, commercial, and infrastructure applications where consistent, high-quality three-phase power is critical for equipment performance, safety, and longevity.

⚡Why It’s Needed

Three-phase power systems (e.g., 400V/230V, 480V/277V) are used to run heavy machinery, motors, HVAC systems, and data centers. However, grid voltage can vary due to:

  • Long transmission lines
  • High load demand
  • Faults or switching events
  • Unbalanced single-phase loads

Without stabilization, these variations can cause:

  • Motor overheating or failure
  • Process interruptions
  • Reduced equipment lifespan
  • Tripped breakers or shutdowns

⚙How It Works

A 3-phase voltage stabilizer continuously monitors input voltage and automatically adjusts it to deliver a precise, balanced output (e.g., 400V ±1–3%).

Common Technologies:

Type Mechanism Key Features
Servo-Controlled (Electromechanical) Uses a servo motor to move a carbon brush along an autotransformer winding Smooth regulation, high accuracy (±1%), handles inrush current well
Static (Thyristor/SCR-Based) Uses solid-state switches (SCRs or IGBTs) to select transformer taps Ultra-fast response (<20 ms), silent operation, no moving parts
Magnetic Induction (Ferroresonant) Uses saturable magnetic cores and capacitors Rugged, excellent surge suppression—but less efficient and bulky

📋Core Features & Specifications

Parameter Typical Range/Value
Input Voltage Range 260–520V (for 400V systems), or customizable
Output Voltage Accuracy ±1%, ±2%, or ±3%
Power Rating 3 kVA to 5000+ kVA
Response Time 10–100 ms (static faster than servo)
Protection Over/under-voltage cutoff, overload, short-circuit, phase loss
Cooling Air-cooled (AN/AF) or oil-immersed (for high kVA)
Mounting Floor-standing, wall-mounted, or skid-mounted

🏭Common Applications

  • Industrial Plants: CNC machines, injection molding, compressors
  • Oil & Gas: Pumping stations, control rooms
  • Data Centers: UPS front-end conditioning
  • Hospitals: Imaging equipment, HVAC
  • Elevators & Escalators: Prevent erratic behavior during voltage dips

Packaging & Shipping

3Phase TNS/SJW-10KVA 15KVA 20KVA 25KVA 30KVA 40KVA 50KVA 60KVA 80KVA 100KVA SVC Servo Voltage Stabilizer Regulator

Frequently Asked Questions (FAQ)

Q1 What Is The Guarantee?

Within 5 Year From The Sale Date, If There Are Any Accessory Problems, You Just Provide The Photos Of Damaged Accessory, Then We Will Provide A Satidfication After-Sale Service For Free.

Q2 Can We Put/Show Our Own Logo On Your Products?

Yes, No Problem, However, The Quantity Should Be A Bit Big.

Q3 Is OEM/ODM Available?

Yes, It Is! Our Products Can Be Customized. We Design And Produce All Kinds Of Automatic Voltage Regulators/Stabilizers/Transformers/UPS According To Our Customers’ Specific Requirements.

Q4 What Is The MOQ?

1PCS Order Is Acceptable And Welcomed Always.

Q5 Can You Offer Form A Or Form E Or C/O?

Yes, No Problem.

Q6 Why Should You Buy From Us Not From Other Suppliers?

We Have 20 Years Of Experience In Electric Equipments And Have Implemented A Strict And Complete Quality Control System To Ensure Quality And Safety, So We Have A Good Reputation In This Field And Are Favored By Domestic And Foreign Customers.

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