News & Technical Insights — SOTEK Group
Knowledge Base

News & Technical

Technical briefs, standard modifications, international grid projects, and corporate announcements.

Solar Wind Step-Up Transformer SOTEK
JULY 02, 2026

Step-Up Substation Transformers for Utility-Scale Solar and Wind Farms: Engineering Guide

Three-phase pad-mounted distribution transformers are critical components in modern underground utility grids. This guide analyzes standard requirements, dead front safety, and tamper-resistant cabinet designs.

Tags: #SolarSubstation #StepUpTransformer #GreenGrid
Technical Guide
Amorphous vs CRGO Transformer Core SOTEK
JULY 02, 2026

Amorphous Alloy vs. CRGO Silicon Steel Core Transformers: A B2B Financial & Technical Analysis

An in-depth engineering and economic comparison evaluating no-load losses, material properties, and lifecycle ROI for industrial grid deployments.

Tags: #AmorphousCore #CRGO #EnergyEfficiency
Technical Analysis
Preventive Maintenance Oil Analysis SOTEK
JULY 02, 2026

Preventive Maintenance & Oil Quality Analysis for Medium-Voltage Transformers: Industrial Best Practices

A practical engineering guide detailing insulation resistance tests, dissolved gas analysis (DGA), and gasket lifecycle management for heavy industrial substations.

Tags: #PreventiveMaintenance #OilAnalysis #GridOperations
Operations Guide
IEEE C57.12.34 Padmount Transformers SOTEK
JULY 01, 2026

IEEE C57.12.34 Padmount Transformers: Design Compliance & Spec Guide

Three-phase pad-mounted distribution transformers are critical components in modern underground utility grids. This guide analyzes standard requirements, dead front safety, and tamper-resistant cabinet designs.

Tags: #Padmount #IEEE_C57_12_34 #SOTEKSpec
Technical Guide
Oil vs Dry Type Transformer SOTEK
JULY 01, 2026

Oil-Immersed vs. Cast Resin Dry-Type Transformers: Technical Comparison

The debate between oil-immersed and cast resin dry-type transformers involves analyzing initial costs, safety, efficiency, installation space, and environmental impact.

Tags: #OilvsDry #CastResin #SubstationDesign
Technical Comparison
Vietnam Transformer Manufacturers Import SOTEK
JULY 01, 2026

Top Distribution Transformer Manufacturers in Vietnam: A B2B Importing Guide

For global utilities, EPC contractors, and industrial developers, sourcing electrical equipment from Vietnam offers lower manufacturing costs and compliance to international standards.

Tags: #ImportGuide #VietnamManufacturers #B2BGrid
Importing Guide
Aboitiz Power grid project SOTEK transformer
MAY 18, 2026

SOTEK Group Supplies Distribution Transformers to Aboitiz Power

Our B2B export division has finalized a distribution contract with Aboitiz Power Corporation in the Philippines. The initial shipment consists of 3-phase corrugated ONAN units tested under high ambient temperatures.

Tags: #AboitizPower #GridExport #IEC60076
Archived Report
SOTEK padmount transformer installation
APRIL 27, 2026

Understanding Tamper-Resistant Padmount Design (IEEE C57.12.34)

Underground residential and commercial loops require transformers installed directly on ground pads. This article analyzes the safety standards of ANSI/IEEE compartmentalized cabinets, separating high-voltage and low-voltage sections.

Tags: #Padmount #IEEE_C57 #UndergroundGrid
Technical Paper
SOTEK factory automatic wire winding
MARCH 10, 2026

Gia Binh Industrial Park Plant Scales Up Winding Output

SOTEK’s Phase 2 plant in Gia Binh Industrial Park is fully operational. Featuring positive-pressure dust-controlled rooms, we have added automatic vertical tension winders to manufacture cast resin coils up to 3,150 kVA.

Tags: #BacNinhPlant #CleanRoom #DryTypeWinding
Company News
SOTEK transformer testing line
FEBRUARY 04, 2026

Minimizing Core Losses: A Study on Laser-Scribed CRGO Steel

A detailed engineering paper explaining how SOTEK’s core assembly reduces hysteresis and eddy current losses. Implementing thinner laminations (0.23mm) allows compliance with TCVN 8525 and Ecodesign guidelines.

Tags: #TransformerEfficiency #CRGO #LowLoss
Engineering Journal