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Vziman

China

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About me

Zhejiang Vziman Electric Group Co., Ltd. is a high-tech enterprise specializing in R&D, manufacturing, and service of power electrical equipment. Committed to innovation, quality, and customer satisfaction, it supplies smart solutions for global power sectors, covering grid construction, new energy, and industrial distribution. Core Business • Switchgear (GIS, circuit breakers, Recloser, Load break switch) • Distribution equipment (transformers, RMU, smart terminals) • Power automation systems • Engineering services (installation, maintenance, consulting) Technical Strength • Provincial R&D center, multiple patents • Modern production, ISO/GB/IEC/CE/UL certified • High capacity, large-scale delivery support Market & Vision Serves State Grid, Southern Grid, and global projects (Asia, Africa, Europe, etc.). Aims to lead in smart grids and new energy, promoting sustainable energy development.

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Vziman

Transformer Production Workshop - Every step is strictly controlled to ensure the delivery of effi cient, stable and safe power supply guarantee!

05/16/2025 10:02:34

Events and Activities

Ethiopian Client Successfully Completes Inspection of 33kV Gas-Insulated Switchgear

Ethiopian Client Successfully Completes Inspection of 33kV Gas-Insulated Switchgear

From April 23 to 25, 2025, a delegation from Ethiopian Electric Power (EEP) visited our company to conduct an on-site inspection of the ordered 33kV Gas-Insulated Switchgear (GIS). The client expressed satisfaction with the product's performance and quality and signed the acceptance documents. During the inspection, the EEP technical team conducted key tests on the equipment's electrical performance, sealing,

Knowledge

Dry-Type Transformer Insulation Degradation: Root-Cause Analysis & Solutions

Dry-Type Transformer Insulation Degradation: Root-Cause Analysis & Solutions

Dry-type transformers are widely used in various distribution facilities due to their oil-free, maintenance-free, and flame-retardant advantages.However, insulation performance degradation is a prominent issue affecting their safe operation. If not addressed promptly, it may cause tripping and power outages at best, and equipment burn-out or even fire accidents at worst.Therefore, accurately identifying the causes of insulation degradation and adopting targeted measures is key to ensuring long

Power Transformer Core Fault Analysis

Power Transformer Core Fault Analysis

The core constitutes the magnetic circuit of a power transformer, and its operating condition directly impacts equipment safety. Statistics indicate that core faults rank third among all transformer accidents, with multi-point grounding and overheating being the most prevalent types. This article provides a systematic review of core fault causes, manifestations, detection methods, and remedial measures.Figure 1 On‑site operational oil‑immersed power transformerI. Core Multi-Point Grounding Faul

Transformer Noise Control Technical Guide: From Source Control to Comprehensive Noise Reduction

Transformer Noise Control Technical Guide: From Source Control to Comprehensive Noise Reduction

Transformer noise control is a systematic engineering discipline. This guide systematically compiles current mainstream noise reduction technologies based on IEC 60076-10:2016, IEEE C57.136-2023, and CIGRE WG A2.54 technical guidelines, providing technical reference for equipment selection, engineering design, and O&M retrofits.Control Logic FrameworkTransformer noise generation and propagation follow the fundamental "Source → Path → Receiver" logic. Effective noise reduction must address a

Transformer Noise: In-Depth Analysis — Generation Mechanism, Acoustic Diagnosis & Standard Control

Transformer Noise: In-Depth Analysis — Generation Mechanism, Acoustic Diagnosis & Standard Control

Transformer noise is a universal challenge for power infrastructure worldwide, affecting residential areas, commercial centres, hospitals, schools, industrial and mining enterprises alike.It arises from the combined mechanical and aerodynamic noise generated by the transformer body and its cooling system — rooted in structural design, selection, layout, installation, and operational conditions.Three-Winding Oil-Immersed Power Transformer 1. Three Principal Noise SourcesTransformer noise originat

Typical Problems & Systematic Protection Strategies for Dry-Type Transformers in Coastal Salt-Fog Environments

Typical Problems & Systematic Protection Strategies for Dry-Type Transformers in Coastal Salt-Fog Environments

The harsh environment of coastal regions — high salt-fog concentration and high humidity — poses a continuous threat to the insulation performance and metal structures of dry-type transformers, with failure rates significantly higher than in inland areas.This article covers the damage mechanisms, common faults, and systematic protection strategies across three dimensions, providing a reference for engineering practice in the selection and O&M of coastal dry-type transformers.Dry Type Electri

Fault Risks & Protection Measures for Dry-Type Transformers in High-Humidity & Condensation Environments

Fault Risks & Protection Measures for Dry-Type Transformers in High-Humidity & Condensation Environments

Dry-type transformers lack the sealed oil barrier of oil-immersed units; their solid insulation surfaces are directly exposed to the operating environment. In the high-humidity, condensation-prone conditions of underground spaces, they demand far more meticulous protection than their oil-immersed counterparts.A dry-type transformer's end of life often does not begin at the moment of short-circuit — it begins the moment the first droplet of condensation settles on the winding surface.Common Prob

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