Automatic Step Voltage Regulator Series
Your Professional Automatic Step Voltage Regulator Series Supplier
Shaanxi Sefon Electrical Equipment Co., Ltd. (referred to as Sefon), established in 2009, is a high-tech enterprise integrating research and development, design, production, sales, service, and power engineering general contracting. Our company mainly produces 35kV and below oil immersed transformers, dry-type transformers, special transformers, dry-type iron core series reactors, high and low voltage switchgear, box type substations, prefabricated cabins, and power quality control products.
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Why Choose Us
Certification
Passed ISO9001:2008 quality management system certification, ISO14001:2015 environmental management system certification, and OHSAS18001:2007 occupational health and safety management system certification.
R&D Team
In recent years, the technology research and development team has independently developed and made significant technological progress in major products such as special power equipment and power quality equipment, based on the reference of advanced technologies at home and abroad, and has obtained more than ten national patents.
Advanced Equipment
WR horizontal winding machine; ZBR-1000 automatic cable winding machine; ZBR-1000 shearing machine; ZY-50 vacuum oil filter; HB electric hot blast constant temperature drying oven; WLJ-1200 corrugated paper board machine; SRX2600 three-dimensional iron core winding machine; DHR1400 foil winding machine; 303E-3-S busbar processing machine; ZQ4125 desktop drilling machine, etc.
Our Services
The company is fully committed to providing customers with meticulous and professional consulting services. For problems that arise during the use of products or equipment, based on user feedback, our company's after-sales service center will coordinate with them, including product installation, maintenance, and technical Q&A.
Automatic Step Voltage Regulator Series Specifications
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Name |
Specification |
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Voltage level |
6kV |
10kV |
35kV |
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Rated capacity |
500~5000KVA |
500~12500KVA |
500~24000KVA |
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Number |
Three -phase |
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Rated frequency |
50Hz |
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Wiring method |
YA0 (three -phase and three -line star wiring) |
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Cooling method |
Onan (Oil soaked from cold) |
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Segmentation number |
7 or 9 |
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Mechanical life |
≥50 times |
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Electrical life |
>5 times |
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Regulating range |
(-10%~+10%), (-5%~+15%), (0 ~+20%), (0 ~+30%) optional |
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Protective function |
Overcurrent, under pressure, number of daily actions, high and low -grade limit protection, etc. |
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Display function |
But the voltage, current, gear, daily movement, number of total movements of the lines in real time |
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Communication method |
With standard RS485 or RS232 communication interface, GPRS remote monitoring and wireless monitoring control can be achieved |
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Main Functions

Protection Mechanisms
Many ASVRs have built-in protection features to safeguard equipment and the overall system from damage due to voltage fluctuations and overloading.
Equipment Protection and Longevity
By providing a consistently regulated voltage, ASVRs protect sensitive electrical equipment from adverse effects, improving system reliability and extending its lifespan.


Microprocessor-based Controls
Modern ASVRs often utilize microprocessors for their control circuits, which allows for more precise voltage regulation, faster response times, and greater accuracy.
Load Compatibility
The regulator is designed to handle varying loads, which is crucial for power distribution systems to maintain stability and productivity under changing demands.

Key Components and Their Roles
Servo Motor-Controlled (Electromechanical)
Uses a motor to adjust a transformer's tap settings. Known for high accuracy but slower response times.
Relay-Based (Tap Switching)
Employs relays to switch between different transformer taps. Faster than servo but might have slight output steps.
Static (Solid-State)
Uses power electronic devices like thyristors or IGBTs for very fast and precise voltage correction without moving parts. Often more expensive but offers superior performance.
Control Circuit (Microprocessor/Analog)
Compares the sensed voltage with a desired setpoint. If a deviation is detected, it signals the correction mechanism.

Commercial: Safeguarding office equipment, servers, retail POS systems, and lighting.
Industrial: Essential for CNC machines, anufacturing robots, process control equipment, and large motors.
Medical: Critical for sensitive medical imaging equipment, life support systems, and laboratory instruments.
Telecommunications: Ensuring uptime for base stations, data centers, and communication hubs.
Packaging & Shipping
1.For the automatic step voltage regulator series, we will use carton, for big capacity products, we shall use strong wooden case for good protection.
2.All shipments are convenient here. International express (TNT, UPS, DHL and FedEx), by air and by sea. We always compare at least 3 shipping costs before decision.
Our Certificates






FAQ
We're professional automatic step voltage regulator series products manufacturers and suppliers in China, providing high quality products with low price. We warmly welcome you to wholesale cheap automatic step voltage regulator series products made in China here from our factory. Contact us for customized service.
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