China · Yongfan Electric Co., Ltd. (YOF®) — ISO9001 & CCC Certified OEM/ODM Manufacturer

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TND(SVC) Series High Accuracy Full-Automatic AC Voltage Stabilizer (500VA–30kVA)
TND(SVC) Series High Accuracy Full-Automatic AC Voltage Stabilizer (500VA–30kVA)
TND(SVC) Series High Accuracy Full-Automatic AC Voltage Stabilizer (500VA–30kVA)
TND(SVC) Series High Accuracy Full-Automatic AC Voltage Stabilizer (500VA–30kVA)
TND(SVC) Series High Accuracy Full-Automatic AC Voltage Stabilizer (500VA–30kVA)
TND(SVC) Series High Accuracy Full-Automatic AC Voltage Stabilizer (500VA–30kVA)

TND(SVC) Series High Accuracy Full-Automatic AC Voltage Stabilizer (500VA–30kVA)

As an ISO-certified China source manufacturer, YOF supplies the TND(SVC) series of high-accuracy, fully automatic AC voltage stabilizers (500VA–30kVA), featuring advanced servo-motor drive and linear IC control to deliver continuous $\pm 3\%$ stabilization precision with zero waveform distortion. Specifically built to protect industrial automation, precision test instruments, medical systems, and office electronics from line voltage fluctuations, our single-phase automatic voltage regulators (AVR) provide comprehensive overvoltage, overload, and time-delay protection. Backed by flexible OEM/ODM customization, competitive wholesale factory pricing, low MOQ, and rapid global delivery, we offer direct engineering support—contact our team today for an instant B2B quotation and complete product datasheet!
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  • Detailed Description

 

1. Operating Principle & Structural Architecture

The TND(SVC) Series High Accuracy Full-Automatic AC Voltage Stabilizer (500VA–30kVA) is manufactured by China · Yongfan Electric Co., Ltd. (YOF®), an ISO-certified manufacturer, factory, and B2B vendor specializing in low-voltage power distribution and industrial voltage regulation solutions. Engineered with an advanced linear integrated circuit (Linear IC) sensing and control system, the unit precisely drives an autotransformer contact voltage regulator via a responsive servo motor to achieve seamless, automatic, and stepless voltage regulation.

Integrated with multi-stage electrical safeguards—including time delay, over-voltage, under-voltage, and over-current protections—the stabilizer guarantees safe, continuous 24/7 power delivery to critical connected loads. Operating at a high electrical efficiency of >90%, it preserves an identical input-to-output voltage waveform with zero additional waveform distortion, maintaining steady output voltage and uninterrupted performance under harsh grid fluctuations.

Available in both single-phase portable/movable benchtop enclosures (500VA–10kVA) and heavy-duty single-phase floor-standing cubicle enclosures (5kVA–30kVA), the stabilizer supports extensive custom OEM/ODM manufacturing, private label branding, and flexible bulk wholesale supply directly from our specialized Chinese production facility.

Linear IC & Servo Motor Control

Precision linear IC detects input grid fluctuations in real time, driving the heavy-duty servo motor and autotransformer contact mechanism with high sensitivity and stepless dynamic stability.

Zero Power Interruption Regulation

The regulation process is completely continuous with no lost electricity phenomenon or transient dropouts, ensuring uninterrupted sine wave output for sensitive precision apparatus.

High Breaking Capacity Circuit Breaker

Equipped with an industrial-grade miniature circuit breaker (MCB) with high breaking capacity, providing instantaneous trip response during severe overload or short-circuit fault conditions.

High-Durability Carbon Brushes

Utilizes premium wear-resistant carbon brush assemblies with minimal contact resistance and superior thermal dissipation, substantially prolonging stabilizer service life.

2. Performance Characteristics & Protective Capabilities

Designed to meet stringent commercial and industrial power quality standards, the TND(SVC) series provides stable voltage output, wide input tolerance, and multi-tier equipment protection:

High Voltage Regulation Accuracy (±3%)
Calibrated at the factory to a tight nominal 220V ±3% (with auxiliary 110V ±4% dual-output sockets available on 500VA–3000VA models), delivering steady power to voltage-sensitive equipment.
Wide Input Voltage Operating Window
Accommodates broad utility swings of 150V–250V (for capacities ≤3kVA) and 160V–250V (for capacities ≥5kVA), delivering continuous, reliable output even in regions with severe grid instability.
Strong Load Adaptability & High Efficiency
Demonstrates outstanding load properties across resistive, inductive, and capacitive industrial loads with >90% operating efficiency and low standby thermal dissipation.
Automatic Safety Cutoff & Over-Current Protection
Automatically cuts off power output when voltage exceeds 246V ±4V or during severe input over-current, preventing catastrophic burn-out of downstream equipment and electrical circuits.

3. Scope of Commercial & Industrial Applications

The TND(SVC) series is extensively utilized across electrical facilities, precision laboratory workstations, institutional power systems, and manufacturing environments:

Housing & Residential Buildings Industrial Manufacturing Factories Schools & Educational Institutions Commercial Shops & Retail Stores Corporate Offices & IT Data Desks Precision Scientific Experiment Instruments Laboratory Test & Calibration Instruments Telecommunication Systems & Base Stations Industrial Automation & Production Equipment Medical & Diagnostic Healthcare Equipment Domestic & Commercial Electrical Appliances

4. Main Technical Parameters

Item / Parameter TND 500VA ~ 3000VA TND 5000VA ~ 30000VA
Input Voltage Range 150V ~ 250V 160V ~ 250V
Output Voltage Regulation Accuracy 220V ± 3%, 110V ± 4% 220V ± 3%
Under-Voltage Protection 184V ± 4V (Set according to user requirements; generally not set by default)
Over-Voltage Protection 246V ± 4V 246V ± 4V
Efficiency > 90% > 90%
Regulating Speed < 1s (When input voltage varies by 10%)
Frequency 50Hz / 60Hz 50Hz / 60Hz
Ambient Temp. & Relative Humidity -5°C ~ +40°C, Relative Humidity < 90%
Waveform Distortion No additional waveform distortion (Pure sine wave output)

5. Overall Dimensions, Packaging & Weight Specifications (For Reference Only)

Model (Structure) Specification & Capacity (VA) Overall Size (W×D×L) (mm) TQY (PC) Package Size / Set (W×D×L) (mm) Gross Wt. (kg) Net Wt. (kg)
Single-Phase Movable Type TND-500 195 × 160 × 140 4 420 × 240 × 350 20 18
TND-1000 205 × 200 × 160 4 510 × 280 × 390 25 24
TND-1500 205 × 200 × 160 4 510 × 280 × 390 27 25.5
TND-2000 240 × 285 × 200 1 375 × 310 × 270 11 10.5
TND-3000 240 × 300 × 235 1 385 × 315 × 305 13.5 12.5
TND-5000 240 × 475 × 205 1 550 × 315 × 270 23 22
TND-7500 295 × 475 × 240 1 555 × 370 × 305 29 28
TND-10000 295 × 475 × 240 1 555 × 370 × 305 33 32
Single-Phase Cubicle Type TND-5000 310 × 280 × 450 1 430 × 390 × 560 29 25
TND-7500 310 × 280 × 450 1 430 × 390 × 560 38 33
TND-10000 310 × 280 × 530 1 430 × 390 × 610 42 37
TND-15000 320 × 420 × 620 1 540 × 510 × 790 58 54
TND-20000 320 × 420 × 620 1 540 × 510 × 790 61 57
TND-30000 380 × 420 × 740 1 530 × 480 × 850 66 60

6. Factory Direct OEM / ODM Customization & Wholesale Services

Direct Factory Manufacturing Capabilities

  • China Direct Manufacturer & Factory: Source directly from our ISO9001 and CCC certified manufacturing plant for transparent pricing and rapid lead times.
  • Custom Voltage & Frequency Engineering: Tailored input voltage ranges (wide-range 120V–260V / 90V–250V), custom output voltages (100V, 110V, 120V, 220V, 230V, 240V), and dual 50Hz/60Hz frequency calibration.
  • Enclosure & Meter Customization: High-precision pointer analog meters or intelligent multi-function LED/LCD digital display panels; portable desktop cases or industrial floor-standing cubicles with heavy-duty caster wheels.

Wholesale Procurement & B2B Support

  • Flexible MOQ & Bulk Order Pricing: Low minimum order quantities for trial batches, sample testing, and tier-discounted wholesale pricing for distributors and contractors.
  • OEM / ODM & Private Label: Custom silk-screen branding, front-panel logo printing, custom packaging cartons, and multi-language user manuals.
  • Fast Quotation & Technical Datasheets: Contact our engineering sales team for formal price quotes, comprehensive electrical datasheets, wiring diagrams, and export logistics support.

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CHINA · YONGFAN ELECTRIC CO., LTD. (YOF®)

Professional China manufacturer of BK/JBK/JMB/SBK/SG Transformers, Online & Bypass Intelligent Soft Starters & Cabinets, YFX01 Autotransformer Starting Boxes, TND/TNS/SBW/DJW/SJW Voltage Stabilizers, and TDGC2/TSGC2 Contact Voltage Regulators since 2009.

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Add: Dongfeng Industrial Zone, Liushi Town, Yueqing City, Zhejiang Province, China

Tel: +86-0577-27777363

Mobile: +86-13968736791

Email: 95liujun@163.com

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