China · Yongfan Electric Co., Ltd. (YOF®) — ISO9001 & CCC Certified OEM/ODM Manufacturer
The SBW Series High Power Compensation Single and Three-Phase AC Voltage Stabilizer (30kVA–1000kVA) is manufactured by China · Yongfan Electric Co., Ltd. (YOF®), an established ISO-certified manufacturer, source factory, and global B2B vendor specializing in industrial power conditioning equipment. Engineered with advanced international electrical compensation technology and precision servo-controlled autotransformer mechanisms, the system automatically stabilizes output voltage when grid voltage fluctuates or load current surges, ensuring continuous, reliable operation of connected critical loads.
Featuring an exceptionally large power capacity, ultra-high operating efficiency of ≥98%, zero waveform distortion (<1%), straightforward maintenance, and robust operational reliability, the SBW series is uniquely engineered to deliver full rated capacity output even at the lowest boundary of the input voltage range (down to 304V). Integrated multi-stage electrical safeguards—including over-voltage, over-current, and start-up phase sequence protection—guarantee uninterrupted 24/7 protection against severe electrical grid anomalies.
Available in single-phase and three-phase industrial floor-standing cubicle structures (single cubicle, double cubicle, and four-cubicle configurations), this product line supports custom OEM/ODM engineering, private-label manufacturing, and flexible bulk wholesale orders directly from our specialized Chinese production facility.
Employs an international advanced series-parallel inductive compensation topology, ensuring smooth, stepless voltage correction without transient step interruptions.
Maintains 100% rated power output even during severe grid brownouts at the lowest input limit (304V), eliminating derating concerns.
Achieves an outstanding ≥98% energy efficiency rating with less than 1% waveform aberration, preserving total harmonic purity for sensitive electronics.
Integrated intelligent automatic cutoff and signaling for overvoltage, overcurrent, motor overload, and start-up phase-sequence error protection.
The SBW series is purpose-built for electric power conditioning in small manufacturing plants, production workshops, and electrical distribution departments across medium-to-large industrial and mining enterprises. It is extensively deployed across modern infrastructure and automated production environments, and is particularly suited for end-users situated at the remote ends of low-voltage (LV) distribution networks subject to severe voltage drop and extensive fluctuations:
| Item | Model: SBW 30kVA ~ 1000kVA (Three-phase) |
|---|---|
| Input voltage range | 304V ~ 456V |
| Output voltage | 380V ± (1-5%) settable |
| Regulation accuracy | ± (1-5%) settable |
| Insulation resistance | ≥ 2MΩ |
| Withstand voltage | 2000V/1min no disruption of flash phenomenon |
| Frequency | 50Hz / 60Hz |
| Response time | ≤ 0.5s |
| Efficiency | ≥ 98% |
| Waveform aberration | < 1% |
| Ambient temp | -5°C ~ +40°C |
| Relative humidity | < 90% |
| Number of Phases | Specification & Capacity (kVA) | Overall Size (W×D×H) (mm) | Net Weight (kg) | Number of Cubicles |
|---|---|---|---|---|
| Single-phase | SBW-30 | 800 × 620 × 1380 | 280 | Single cubicle |
| SBW-50 | 800 × 620 × 1380 | 320 | ||
| SBW-80 | 850 × 630 × 1520 | 430 | ||
| SBW-100 | 850 × 630 × 1520 | 480 | ||
| Three-phase | SBW-150 | 1050 × 750 × 1800 | 560 | Single cubicle |
| SBW-200 | 1050 × 750 × 1800 | 680 | ||
| SBW-225 | 1100 × 900 × 1850 | 720 | ||
| SBW-250 | 1100 × 900 × 1850 | 800 | ||
| SBW-320 | 1100 × 920 × 1900 | 1040 | ||
| SBW-350 | 1100 × 920 × 1900 | 1080 | ||
| SBW-400 | 1100 × 920 × 1900 | 1106 | ||
| SBW-500 | 1300 × 1050 × 2000 | 1490 | ||
| SBW-600 | 1300 × 1050 × 2000 | 1580 | ||
| SBW-800 | 1350 × 1200 × 2000 | 2400 | Double cubicles | |
| SBW-1000 | 1050 × 750 × 2000 | 3150 | Four cubicles |
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.
Add: Dongfeng Industrial Zone, Liushi Town, Yueqing City, Zhejiang Province, China
Tel: +86-577-27877036 | Fax: +86-577-27877037
Mobile: +86-13968736791 / +86-13868325933
Email: YOF@cnyofan.com
© China · Yongfan Electric Co., Ltd. (YOF®). All Rights Reserved.
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