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Project Case Study

33kV Transformer and Switchgear Package for Solar Power Project

A 33kV transformer and switchgear package supplied for a solar power project in the Philippines, including oil-immersed transformers, medium voltage switchgear, low voltage distribution panels, testing documents and export shipment support.

Philippines 2025 High Voltage Switchgear Solar
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33kV Transformer and Switchgear Package for Solar Power Project
Project Overview

Project Snapshot

A 33kV transformer and switchgear package supplied for a solar power project in the Philippines, including oil-immersed transformers, medium voltage switchgear, low voltage distribution panels, testing documents and export shipment support.

This project involved the supply of a 33kV transformer and switchgear package for a solar power project in the Philippines. The supplied equipment included oil-immersed transformers, medium voltage switchgear and low voltage distribution panels for power distribution and grid connection support.

Before production, the project specification and single-line diagram were reviewed to confirm key technical requirements, including transformer capacity, voltage ratio, impedance, switchgear feeder arrangement, CT/PT configuration, protection relay requirements and project documentation.

The equipment was manufactured, tested and prepared with the required technical documents before shipment.

At A Glance
Location
Philippines
Project Year
2025
Product
High Voltage Switchgear
Industry
Solar
Project Type
EPC Project
Standards
IEC, Consultant specification, Project specification
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Scope Of Supply

Equipment Supplied

Every unit delivered for this project, with quantity and configuration notes.

Oil-immersed Transformer

33kV oil-immersed step-up transformer

Quantity: 2 units

Supplied with protection accessories, nameplates, test reports and project documents.

High Voltage Switchgear

33kV medium voltage switchgear panels

Quantity: 1 lot

Including incoming panel, outgoing feeder panels, metering and protection configuration according to the project SLD.

Low Voltage Switchgear

Low voltage distribution panels

Quantity: 1 lot

Supplied for auxiliary power distribution and site electrical loads.

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Technical Data

Key Ratings

Voltage, capacity, and protection parameters confirmed for this project.

Technical ratings for this project
Parameter Value Notes
Transformer Capacity 2500 kVA Per unit
Primary Voltage 33 kV Medium voltage side
Secondary Voltage 0.4 kV Low voltage side
Frequency 60 Hz According to project requirement
Vector Group Dyn11 Confirmed before production
Impedance 6% Confirmed according to system requirements
Cooling Method ONAN Oil natural air natural cooling
Installation Outdoor Suitable for tropical project environment
MV Switchgear Rated Voltage 33 kV Medium voltage switchgear system
MV Switchgear Rated Current 1250 A Main busbar rating
Short-circuit Current 25 kA / 3s According to project fault level requirement
LV Switchgear Rated Voltage 400 V Auxiliary low voltage distribution
Cable Entry Bottom entry Confirmed according to site installation layout
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Building To These Exact Ratings?

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How We Delivered

Challenge And Solution

The requirement on site, and how the specification, drawings, and production were supported.

The Challenge

Project Requirement

<p>The project required transformer and switchgear equipment to match the project specification and single-line diagram. Several technical items needed confirmation before production, including transformer impedance, voltage ratio, switchgear feeder configuration, CT/PT requirements, protection relay arrangement, cable entry direction and project document submission requirements.</p>

Our Solution

What We Supported

Our engineering team reviewed the specification, SLD and technical requirements before preparing the proposal. The transformer ratings, switchgear configuration, feeder arrangement, protection and metering requirements were checked against the project documents. Based on the confirmed requirements, we prepared a suitable transformer and switchgear package with product datasheets, arrangement drawings, technical documents and testing support.

Before production, the main drawings and technical parameters were confirmed to reduce approval, installation and commissioning risks.

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Have A Tricky Approval Or Site Condition?

Our engineers review your drawings, deviations, and standards so your equipment clears consultant and utility approval the first time.

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Quality And Records

Testing And Documents

Inspection items and engineering documents prepared for this project.

Testing And Inspection

Routine Test FAT Test Report Provided Pre-shipment Inspection Mechanical Operation Check Secondary Circuit Check Power Frequency Withstand Voltage Test

<p>Routine tests were completed before shipment. The transformer was tested for insulation resistance, voltage ratio, winding resistance, applied voltage, induced voltage and oil-related inspection items. The switchgear panels were checked for mechanical operation, interlock function, insulation resistance, secondary wiring and power frequency withstand voltage. Test reports and FAT documents were prepared according to the project requirements.</p>

Engineering Documents

Technical Proposal Product Datasheet General Arrangement Drawing Foundation Drawing Single-line Diagram Review Transformer Outline Drawing Switchgear Panel Arrangement Primary Schematic Secondary Schematic Control Wiring Diagram Terminal Plan Panel Schedule BOM / Component List CT / PT List Relay and Meter List Compliance Statement Technical Deviation Sheet FAT Procedure Test Report Installation Manual Operation & Maintenance Manual
Quality On Record

Want Test Reports And FAT For Your Order?

We arrange routine tests, witness inspection, and full document sets so your equipment ships with proof of compliance.

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See Your Build

Want Photos Of Your Units In Production?

You get progress photos at production, testing, and packing stages so you track your order from factory to container.

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Export And Delivery

Packing And Shipment

Export packing, container loading, and nameplate records for this shipment.

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