How to maintain a voltage stabilizer?

Regularly clean internal dust and check cooling fan operation. Clean monthly in dusty areas; brush the air inlet quarterly and inspect the fan yearly to prevent overheating damage.

Wholesale SBW Series Three Phase SBW-400kVA Fully Automatic Electronic AC Voltage Regulator

Name: Wholesale SBW Series Three Phase SBW-400kVA Fully Automatic Electronic AC Voltage Regulator
Brand: Hebei Hanguang Electrical Equipment Technology Co., Ltd
SKU: 2161887792

Hebei, ChinaHebei Hanguang Electrical Equipment Technology Co., Ltd

US$10.00-9,999.00

1 Piece

Product specifications

SBW-500K

Product profile

Customization

Available

Current Type

Phase

Three Phase

Model NO.

SBW

Frequency Characteristics

Low Frequency

Usage

SVC

Frequency

Industrial Frequency

Size

Small

Iron Core Shape

Ring

Power Source

Linear Regulated Power Supply

Application Range

Hotel

Brand

Hbhg

Response Time

Less Than 1s

Output Voltage

380V+/-3%

Protection

Over Voltage/Under Voltage

Input Voltage

Three Phase:304V-456V/323V-437V Single Phase:176V-

Efficiency

Over 95%

Transport Package

Standard Packing

Specification

110*125*200CM

Trademark

OEM, ODM

Origin

China

HS Code

8504401990

Production Capacity

6000pieces/Month

Key features

High Efficiency Design: Efficiency exceeds 95% with no waveform distortion for stable voltage regulation.

Fast Response Time: Automatic voltage compensation with a response time of less than 1 second.

Comprehensive Protection: Features over/under voltage, lack phase, phase order, and overload protection.

Long Service Life: Sustained stable operation for over 30,000 hours of continuous work.

Flexible Customization: Supports OEM/ODM, full customization, and minor customization options.

Slim Profile Design: Integrated ultra-thin core components on a professionally developed circuit board.

12-Month Warranty: Covers free repair and replacement of parts for non-human damage.

24/7 Technical Support: Provides free installation guidance, training, and round-the-clock consultation.

Company profile

Hebei Hanguang Electrical Equipment Technology Co., Ltd

Hebei, China

Business Type: Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 12 Years CertifiedNearest Port: Tianjin PortAverage Response Time: ≤5.07h

AI-Powered supplier vetting

SummaryHebei Hanguang Electrical Equipment Technology Co., Ltd. is a Chinese high-tech supplier focused on power equipment, including static frequency converters, frequency converter power supplies, shore power supplies, VFDs, and dry-type distribution transformers. It reports ISO9001 and ISO14001 certifications, national power-supply patents, OEM/ODM services, broad customization options, and 12 years of export experience, with exports representing 71%–90% of sales. Service processes for supplier assessment, corrective actions, and complaint handling are documented and followed. However, finished-product inspection is performed by packing staff and only two quality inspectors are reported. The supplier has no overseas warehouses, showrooms, agents or branches, and no offline trade-show participation. Recent product innovation is limited, as no new product was reported in the past year. Financial evidence is insufficient because the provided entries identify years but contain no substantive financial metrics.

Supplier typeThe supplier is described as a Chinese high-tech enterprise integrating R&D, manufacturing, sales, and service for power equipment. Its listed products include frequency converter power supplies, shore power supplies, VFDs, dry-type distribution transformers, and static frequency converters, indicating an industrial electrical and power-equipment manufacturer.

CertificationsThe company states that it has obtained ISO9001 Quality Management System and ISO14001 Environmental Management System certifications, and an SGS audit report is identified as valid from March 13, 2026 to March 12, 2027. The available information supports certification and audit evidence, although the audit result itself is coded as “0” without an explanatory interpretation.

After-Sales capabilityThe supplier reports written procedures and followed records for service-capability assessment, corrective and preventive actions, and customer complaint handling. However, it reports no overseas warehouses, showrooms, agents or branches, and offers overseas services in zero countries, limiting demonstrated local overseas support.

R&D capabilityThe supplier reports numerous national patents in the power-supply field and provides ODM services with extensive design customization. At the same time, it reports no new products during the past year and no available SDK, so the evidence shows established technical capability but limited recent product innovation.

Production capacityThe supplier identifies manufacturing as part of its integrated business, operates a 200.0 m² manufacturing plant, and offers products across several power-equipment categories. It reports lead times within 15 workdays in both peak and off-season, but only two quality assurance/control inspectors are listed and finished products are checked by packing staff.

Customization capabilityThe supplier supports customization from samples, designs, full customization, flexible customization, and minor customization. It also offers both OEM and ODM services, providing explicit evidence of broad product-design and manufacturing flexibility.

Client casesThe supplier states that its products are sold worldwide and recognized by domestic and overseas clients, and it provides OEM services for well-known brands. These statements indicate international customer exposure, but no customer names, project descriptions, order examples, or independently verifiable case details are provided.

Product Q&A

Q:What is the working principle of a voltage stabilizer?

Voltage stabilizers are divided into linear and switching types. Linear ones use an active current-carrying device controlled by a high-gain differential amplifier, compare output voltage with a precision reference, and adjust the device to maintain constant output. Switching types convert DC input to switching voltage; the filtered output is fed back to the control circuit for stable output.

Q:What are the types of voltage stabilizers?

Common types include mechanical, non-contact, inductive, and parametric stabilizers. They differ in regulation accuracy, response speed, and applicable scenarios.

Q:How to select a suitable voltage stabilizer?

Consider input voltage range, output voltage/current, regulation accuracy, response speed, load type, and power capacity. Also base the choice on usage scenarios and budget.

Q:Will a voltage stabilizer increase electricity costs?

No. High-quality stabilizers have no-load loss usually below 3%; some even save electricity by optimizing current paths to reduce losses.

Q:What are common faults of voltage stabilizers and how to troubleshoot?

Common faults: unstable output, no output, overheating, abnormal noise, and automatic protection activation. Causes may include circuit failure, relay damage, abnormal input voltage, blown fuses, or poor heat dissipation. Troubleshoot by replacing damaged parts, cleaning dust, or adjusting input voltage.