Three-phase oil-immersed induction voltage stabilizer TNSJA-500KVA

630kva Oil-Immersed Voltage Stabilizer

The three-phase and single-phase series compensated AC voltage stabilizer is designed by our company by introducing and absorbing advanced Western European technology, combined with China's national conditions, to stabilize AC voltage. It can automatically maintain output voltage stability when external power network voltage fluctuations or load changes cause voltage fluctuations. It responds quickly to maintain output voltage stability when input or load voltage changes, with strong instantaneous current tolerance, wide input voltage range, high efficiency, low loss, attractive appearance, small size, light weight, compact structure, low waveform distortion, and the ability to operate continuously for long periods. It features automatic protection against overvoltage, overcurrent, phase sequence, and mechanical faults, as well as being small, lightweight, safe, convenient, and reliable in operation.

It can be widely used in large electromechanical equipment, metal processing equipment, production lines, construction engineering equipment, elevators, medical equipment, computer rooms, computer-controlled equipment, embroidery and textile equipment, air conditioning, radio and television, hotels, household appliances, lighting, and any other places requiring voltage stabilization in industries such as industry, agriculture, transportation, post and telecommunications, railways, scientific research, and culture. It is also widely used in low-voltage supporting equipment such as laser drilling machines, air compressor equipment, exposure machines, photoplotters, laser cutting machines, printing machines, CNC spark machines, machining centers, medical equipment, and rectifier devices.

Product Parameters:

Input Voltage: Three-phase ±20~±40% (customizable) Output Voltage: Three-phase (three-phase four-wire)

Output Voltage Accuracy: 1% (1-5% adjustable) Frequency: 50-60Hz

Efficiency: ≥98% Response Time: ≤1.5s (30V/2S) (when external voltage changes by 10%)

Waveform Distortion: No additional waveform distortion Mains Function: Three-phase products allow easy switching between mains and stabilized voltage

Startup Method: Automatic or manual startup selectable Operating Mode: Long-term, continuous operation

Insulation Resistance: ≥2MΩ Relative Humidity: <90% Ambient Temperature: -15℃~40℃

Altitude: <1000m Ambient Temperature: -15℃~40℃

Electrical Strength: Withstands 2000V power frequency sinusoidal voltage for 1 minute without breakdown or flashover. Protection Functions: Overvoltage, overcurrent, phase loss, phase sequence protection (single-phase and three-phase below 150KVA without phase loss and phase sequence protection), and mechanical fault protection.

Operating Environment: No gases, vapors, chemical deposits, dust, dirt, or other corrosive media that severely affect the insulation of the stabilizer. The installation site must have no severe vibration or jolting.

The oil-immersed induction voltage stabilizer parameters (STJDJA) consist of a voltage regulating transformer TS (including oil tank, stator, rotor cover, transmission control motor M, handwheel mechanism), etc. Voltage regulation is achieved through an electric transmission motor or handwheel mechanism and gear coupling, with a rotation range within 180°. Electrical and mechanical limits are set on the upper end of the oil tank. The electrical limit cuts off the motor power via a limit switch, and the mechanical limit blocks the rotation limit with a protective bolt. The stator and rotor windings are fixed by the base frame and placed in the oil tank, which is filled with No. 10 transformer oil. When the load generates heat, cooling is achieved through oil immersion and heat dissipation via cooling tubes.

Three-phase high-power oil-immersed induction voltage stabilizers are widely used in tunnel engineering, bridge construction, large power transmission equipment, factory high-power load power supplies, hospital and enterprise workshop voltage stabilization, whole-plant voltage stabilization, wide-range voltage stabilization, and other scenarios where the power supply voltage is too low due to long-distance lines, preventing normal startup of various mining machinery. They feature phase error, phase loss, overvoltage, and overcurrent protection; contactless regulation of the main circuit, no mechanical wear, no spark generation, no interference, low failure rate; strong impact resistance, high instantaneous overload capacity, long service life, and no need for maintenance.

1. Input Voltage: Input voltage range 380V/220V ±20% or wide voltage custom-made

2. Output Voltage: 380V/220V ±2% (1-5% adjustable). If the rated voltage exceeds 10% (adjustable), the output power is cut off after a delay of 3-5 seconds.

3. Frequency: 50Hz/60Hz

4. Oil Temperature: 70℃

5. Cooling Method: Oil-immersed

6. Response Rate: Stabilization time within 20S

7. Oil Temperature Rise: <75℃

8. Bypass: Manual/automatic bypass

Phase Loss: When a phase is missing in the three-phase power, the machine alarms and cuts off the output power.

Bypass: When the stabilizer fails or is under maintenance, it has a manual or automatic direct power pass-through device.

Short Circuit: When the load equipment is short-circuited, the output power is cut off.

1. Output Voltage:

Using a control board with precision logic circuits and precision components, it ensures the best voltage output even in harsh environments, with accuracy within 380V ± (1-3%), freely adjustable.

2. Stepless Voltage Adjustment (Brushless):

Induction-type, contactless induction regulation adjusts the load voltage linearly for step-up and step-down.

3. Excellent Characteristics:

Using Japanese high magnetic flux silicon steel sheets, it minimizes no-load loss and no-load current, allowing the stabilizer to perform optimally with reduced losses.

4. Sufficient Capacity and Strong Overload Capability:

The oil-immersed stabilizer can handle 100% load continuously and withstand instantaneous currents 2-3 times the rated value without damage.

5. Durable and Long Service Life:

The main internal component is the induction voltage regulator (IVR), which has no carbon brushes or other contactors and components, making wear resistance and durability its main features.

6. Easy Maintenance:

Modular design allows all components to be standardized. Only internal cleanliness needs to be maintained, with no special maintenance required.

7. Suitable for Ultra-Large Capacity: Induction-type single units can be made for ultra-large capacities above 1600KVA.

Production of various models of transformers, voltage stabilizers, and UPS power supplies: tunnel transformers, 380/220/200 transformers, special transformers for import and export equipment, isolation transformers, three-phase isolation transformers, IT single-phase medical isolation transformers, dry-type isolation transformers, three-phase dry-type isolation transformers, aging transformers, 10-1000KVA transformers. Contactless voltage stabilizers, three-phase compensated voltage stabilizers, high-power voltage stabilizers, 380V high-power voltage stabilizers, oil-immersed voltage stabilizers, automatic compensated power voltage stabilizers, three-phase compensated power voltage stabilizers, stabilizer-transformer integrated machines. Industrial frequency UPS uninterruptible power supplies, high-frequency UPS power supplies. Oil-immersed induction voltage regulators, three-phase voltage regulators.

>>Company Product Service Guarantee:

I. Quality Objectives

1. Strictly implement national industry standards and relevant national inspection regulations.

2. Fully implement quality management systems, environmental management systems, and health management systems to ensure product quality, guaranteeing a 100% pass rate upon delivery under normal transportation conditions.

3. Fulfill quality commitments to ensure customer satisfaction and confidence in using our 800kva oil-immersed voltage stabilizer products, striving for 100% customer satisfaction.

II. Product Quality Commitment

1. Product quality strictly adheres to national standards and relevant design, manufacturing, and inspection regulations, and is implemented in accordance with contract terms.

2. The 800kva oil-immersed voltage stabilizers we provide are guaranteed to be brand new, original, and genuine products from the manufacturer, accompanied by product user manuals, product inspection qualification reports, and other relevant documents. The main unit has a one-year warranty, with free repairs for quality issues during the warranty period.

III. Delivery Commitment

1. Strictly adhere to contract terms for delivery timelines, ensuring the completeness of the products provided and timely installation and use by customers.

2. Strictly follow contract terms for delivery location and method to ensure the safety of the goods.

IV. After-Sales Service Commitment

1. Provide free product installation guidance and maintenance training or related documentation for customers.

2. Ensure the product operates satisfactorily in its intended environment; establish customer files and conduct regular product quality tracking services.

3. Establish a comprehensive pre-sales, in-sales, and after-sales service network, providing localized services to address technical difficulties or other issues encountered by users.

4. After goods are received and accepted, we guarantee the supply of common spare parts and wear parts for the equipment provided. We guarantee to provide required maintenance spare parts (including main circuit boards, control boards, etc.) at prices no higher than those in the contract annex. We guarantee to provide expansion equipment compatible with the contract equipment.

5. Damage caused by human accidents or other force majeure factors such as natural disasters is not covered by the warranty, but we provide paid repair services.

6. Our pre-sales, in-sales, and after-sales service departments are committed to addressing customer needs. Any abnormal responses or actions not based on customer interests will be dealt with seriously according to company regulations, striving to meet 100% of customer needs comprehensively and normally.

>Selection Tips

1. Voltage stabilizer products should not be used in environments with unstable grid frequency or significant frequency deviations.

2. No other voltage stabilizers or regulators should be connected in front of the voltage stabilizer product.

3. The input and output neutral lines of the voltage stabilizer product must be reliably connected; otherwise, the product may be damaged.

4. Follow the precautions for other power supply products.

®Note: All company products implement the national three-guarantee policy. Any quality issues occurring during the warranty period can be returned or exchanged for free! (Except for special customer requirements) Our products are certified by ISO9001 quality systems and other domestic and international safety certifications. Customers can purchase with confidence and use safely!!!