SG Isolation Transformer

Isolation transformers are a major category in the transformer industry. Our company, Zhejiang Yibaling Power Supply Equipment Co., Ltd., also produces SG Isolation Transformers. Under the continuous research of our engineers, the products we produce have extremely high quality, and at the same time, their no-load loss is smaller than that of many other same models.

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Product Description

The SG isolation transformer is suitable for various AC circuits operating within the frequency range of 50-60Hz and with a rated voltage not exceeding 660V.

Product Applications

Thanks to its outstanding electrical isolation performance and safety reliability, Yibaling Factory's product has been widely used in several critical industrial fields.

Imported precision equipment support: The SG isolation transformer provides safe and compatible power isolation and voltage conversion for advanced equipment from countries with different voltage systems, effectively eliminating interference and risks caused by potential differences in electric potential.

Rectifier devices, variable frequency drives, and power electronic systems: It can achieve electrical isolation between the main circuit and the control circuit, protecting sensitive components and enhancing the system's anti-interference ability and operational safety.

Our Custom Solutions

To meet the diverse needs of users, we offer highly flexible customized solutions:

Voltage flexible customization: Based on actual requirements, customizing any reasonable input and output voltage combinations enables the transformer to adapt to different global grid standards.

Connection group and taps: Multiple connection groups (such as Yyn0, Dyn11, etc.) are provided, and additional voltage-adjusting taps on the input or output side can be added for convenient voltage fine-tuning and adaptation.

Winding capacity allocation: The SG isolation transformer supports dual-winding or multi-winding designs, with each winding capacity being independently allocated to meet complex requirements for simultaneous power supply of multiple voltage levels and loads.

Secondary special design: Independent secondary single-phase windings can be provided for single-phase loads;

For rectifier circuit applications, the winding design can be optimized (such as adding phase-shifting windings, balancing reactors, etc.) to suppress harmonics and improve current waveform.

Model and its significance

Core Advantage

Compared with many similar products on the market, our SG isolation transformer stands out due to the fact that since the very beginning of its research and development. Yibaling has adhered to a systematic approach and consistently prioritized reliability and durability in every aspect of the product.

In terms of specific design, we employ a three-layer electromagnetic shielding and a vacuum-impregnated insulation system. As a result, the no-load and load losses of our products are 20% to 30% lower than those of some inferior products, and they also have a strong short-term overload operation capability.

For places with particularly high requirements, such as hospitals and outdoor extreme environments, we have made dedicated optimizations:

For instance, for transformers used in medical settings, we have enhanced their anti-interference capabilities to ensure that even in the event of a single-point failure, power supply to critical medical equipment can be maintained without endangering patients and medical staff.

From raw material procurement to product shipment, we maintain strict control over every step. We have dedicated supply chains for core materials like silicon steel sheets and copper wires, and each transformer undergoes rigorous testing, including partial discharge tests, before leaving the factory.

Coupled with over 3,000 actual application cases, our engineering team has a clear understanding of where problems are likely to occur and has made improvements in the design accordingly. This has given the equipment an edge in terms of anti-interference and long-term usage costs.

FAQ

Q: What is an SG isolation transformer? How is it different from a common auto-coupling transformer?

A: The SG isolation transformer is a two-winding transformer. The primary (input) winding and secondary (output) winding are electrically isolated from each other, without any direct electrical connection. Energy is transferred through electromagnetic induction. This is fundamentally different from an auto-coupling transformer (where the input and output share part of the winding).

Key differences:

Safety: The SG isolation transformer can effectively prevent the risk of the secondary side becoming electrified due to a ground fault on the primary side or an electric shock, providing higher electrical safety protection.

Anti-interference: The SG isolation transformer can block the ground loop, suppress common-mode noise and high-frequency interference, and provide a purer power supply for the load.

Voltage matching: It mainly achieves voltage transformation and electrical isolation, and does not have an automatic voltage stabilizing function (unless a special model is customized).

Q: When choosing an SG isolation transformer, what key parameters should be considered?

A: The core parameters include:

Rated capacity (kVA): Select based on the total power of all loads with a certain margin (recommend 20-30%).

Input/output voltage: Clearly define the grid voltage and the required equipment voltage.

Frequency (Hz): The SG series is usually compatible with 50/60Hz.

Insulation class: Determines the heat resistance and long-term working reliability of the transformer, common types are B class, F class or H class.

Connection group: Such as single-phase I/I, three-phase Dyn11, etc., it needs to match the system.

Custom requirements: Whether a tap, multi-winding, special shielding layer, etc. are needed.