20kVA-5400kVA Three-phase Dry-type Rectifier Transformer
Key attributes
| Brand | ROCKWILL |
| Model NO. | 20kVA-5400kVA Three-phase Dry-type Rectifier Transformer |
| Rated frequency | 50/60Hz |
| Rated capacity | 400kVA |
| Series | ZSG |
Product descriptions from the supplier
Product Description
The 20kVA to 5400kVA Three-phase Dry-type Rectifier Transformer is a high-performance, air-cooled power conversion solution engineered for environments where safety, reliability, and power quality are paramount. By utilizing advanced epoxy resin casting or VPI (Vacuum Pressure Impregnation) insulation systems, it eliminates the fire risk and potential leakage associated with liquid-filled units. This transformer is specifically designed to provide a stable, isolated AC source for rectifier systems, converting incoming AC power into the precise DC output required for a wide range of industrial processes.
Key Technical Features
Enhanced Safety and Environmental Friendliness:As a dry-type transformer, it contains no flammable insulating oil, significantly reducing the fire hazard. This makes it ideal for installation indoors, in confined spaces, or near sensitive equipment.
Robust Insulation System:Features Class C or H insulation systems using epoxy resin or VPI treatment, providing excellent resistance to moisture, chemicals, and contaminants, ensuring long-term dielectric strength and operational stability.
High Efficiency and Low Losses:Designed with high-quality core materials (such as cold-rolled silicon steel) and precision-wound copper or aluminum windings to minimize no-load and load losses, leading to reduced operating costs and improved energy efficiency.
Excellent Harmonic Handling Capability:Engineered to withstand the thermal and mechanical stresses caused by harmonic currents generated by rectifiers and other non-linear loads, ensuring reliable performance and longevity.
Low Maintenance and Easy Installation:The self-extinguishing insulation system requires no oil monitoring or filtration, drastically reducing maintenance needs. Its lightweight and compact design compared to oil-immersed equivalents simplifies installation.
Technical Parameters Table of ZSG Series Dry-type Rectifier Transformer
Product Model |
Rated Capacity (kVA) |
Rated Voltage |
Weight (kg) |
Gauge (mm) |
Outline Reference Dimensions (Length * Width * Height mm) |
|
High Voltage (V) |
Low Voltage (V) |
|||||
ZSG-20 |
20 |
380 600 (6300) |
58 80 132 200 220 230 300 380 420 (1000) |
130 |
350 |
650 * 260 * 500 |
ZSG-43 |
43 |
290 |
550 |
880 * 400 * 780 |
||
ZSG-60 |
60 |
365 |
550 |
940 * 420 * 800 |
||
ZSG-100 |
100 |
430 |
550 |
900 * 345 * 680 |
||
ZSG-125 |
125 |
505 |
620 |
980 * 420 * 700 |
||
ZSG-160 |
160 |
610 |
620 |
1050 * 360 * 850 |
||
ZSG-175 |
175 |
670 |
680 |
1070 * 420 * 770 |
||
ZSG-250 |
250 |
1030 |
780 |
1220 * 460 * 905 |
||
ZSG-400 |
400 |
1380 |
820 |
1250 * 600 * 1100 |
||
ZSG-500 |
500 |
1590 |
840 |
1300 * 500 * 1110 |
||
ZSG-600 |
600 |
1695 |
860 |
1320 * 520 * 1160 |
||
ZSG-750 |
750 |
2025 |
980 |
1520 * 660 * 1130 |
||
ZSG-5400 |
5400 |
15000 |
1435 |
2400 * 1500 * 2200 |
||
ZSG-785 |
785 |
2600 |
1000 |
1500 * 810 * 1590 |
||
Typical Application Scenarios
Industrial DC Drive Systems: Providing power for variable-speed drives in manufacturing, conveyor systems, and machine tools.
Electrochemical Processes: Used in plating lines, anodizing facilities, and water treatment plants that require precise DC current.
Charging Stations & UPS Systems: Serving as a key component in the power supply for electric vehicle charging infrastructure and Uninterruptible Power Supplies (UPS) for data centers.
Renewable Energy Integration: Acting as the interface transformer in inverter and converter systems for solar and wind energy applications.
Related Products
Related Knowledges
-
Faults and Handling of Single-phase Grounding in 10kV Distribution LinesCharacteristics and Detection Devices for Single-Phase Ground Faults1. Characteristics of Single-Phase Ground FaultsCentral Alarm Signals:The warning bell rings, and the indicator lamp labeled “Ground Fault on [X] kV Bus Section [Y]” illuminates. In systems with a Petersen coil (arc suppression coil) grounding the neutral point, the “Petersen Coil Operated” indicator also lights up.Insulation Monitoring Voltmeter Indications:The voltage of the faulted phase decreases (in01/30/2026 -
Neutral point grounding operation mode for 110kV～220kV power grid transformersThe arrangement of neutral point grounding operation modes for 110kV～220kV power grid transformers shall meet the insulation withstand requirements of transformer neutral points, and shall also strive to keep the zero-sequence impedance of substations basically unchanged, while ensuring that the zero-sequence comprehensive impedance at any short-circuit point in the system does not exceed three times the positive-sequence comprehensive impedance.For 220kV and 110kV transformers in new constructi01/29/2026 -
Why Do Substations Use Stones, Gravel, Pebbles, and Crushed Rock?Why Do Substations Use Stones, Gravel, Pebbles, and Crushed Rock?In substations, equipment such as power and distribution transformers, transmission lines, voltage transformers, current transformers, and disconnect switches all require grounding. Beyond grounding, we will now explore in depth why gravel and crushed stone are commonly used in substations. Though they appear ordinary, these stones play a critical safety and functional role.In substation grounding design—especially when multiple gr01/29/2026 -
Why Must a Transformer Core Be Grounded at Only One Point? Isn't Multi-Point Grounding More Reliable?Why Does the Transformer Core Need to Be Grounded?During operation, the transformer core, along with the metal structures, parts, and components that fix the core and windings, are all situated in a strong electric field. Under the influence of this electric field, they acquire a relatively high potential with respect to ground. If the core is not grounded, a potential difference will exist between the core and the grounded clamping structures and tank, which may lead to intermittent discharge.I01/29/2026 -
Understanding Transformer Neutral GroundingI. What is a Neutral Point?In transformers and generators, the neutral point is a specific point in the winding where the absolute voltage between this point and each external terminal is equal. In the diagram below, pointOrepresents the neutral point.II. Why Does the Neutral Point Need Grounding?The electrical connection method between the neutral point and earth in a three-phase AC power system is called theneutral grounding method. This grounding method directly affects:The safety, reliabilit01/29/2026 -
What’s the Difference Between Rectifier Transformers and Power Transformers?What is a Rectifier Transformer?"Power conversion" is a general term encompassing rectification, inversion, and frequency conversion, with rectification being the most widely used among them. Rectifier equipment converts input AC power into DC output through rectification and filtering. A rectifier transformer serves as the power supply transformer for such rectifier equipment. In industrial applications, most DC power supplies are obtained by combining a rectifier transformer with rectifier equ01/29/2026
Related Solutions
-
Intelligent Operation Solution for 12kV Vacuum Circuit Breakers: Integrating Real-time Monitoring & Lifetime OptimizationⅠ. Equipment Operation & MaintenanceIntelligent Monitoring System IntegrationMulti-parameter Real-time Monitoring: Embedded sensors (temperature, displacement, Hall effect current sensors) track contact temperature rise, mechanical characteristics (opening/closing speed, overtravel), coil current, and partial discharge signals. Data undergoes preprocessing via edge computing prior to cloud upload.Lifetime Prediction Model: Dynamically evaluates remaining lifespan using electrical wear data06/10/2025 -
SF6 Circuit Breaker Solutions for Outdoor Installation (Anti-Pollution & Seismic Resistance)I.Core Challenges in Outdoor InstallationIn high-voltage transmission and distribution systems, SF6 circuit breakers are exposed to complex outdoor environments for extended periods, facing the following critical issues:Pollution & Insulation DegradationDust, salt fog, and industrial pollutants in outdoor environments easily adhere to equipment surfaces. In coastal or industrial areas, pollution levels may reach Class IV, resulting in insufficient creepage distance and triggering flasho05/12/2025 -
12kV Indoor Vacuum Circuit Breaker Southeast Asia Solution: Anti-Corrosion Compact Design12kV Indoor Vacuum Circuit Breaker Southeast Asia Solution: Anti-Corrosion Compact DesignⅠ. Executive SummarySoutheast Asia faces rapidly growing electricity demand alongside environmental challenges including high temperatures, humidity, salt spray corrosion, and grid instability. This solution recommends Solid Insulated Pole-Mounted Vacuum Circuit Breakers (VCB) featuring high reliability, compact design, and smart monitoring. Tailored for tropical climates and industrial scenarios, it06/10/2025
