# Guangzhou Guanggao High Voltage Electric Apparatus Co.,Ltd. | 167kV Pole Mounted Power Distribution Transformer,Pole Mounted Power Distribution Transformer 10kVA,Single Phase Pole Mounted Transformer 333kVA, Three Phase Oil Immersed Transformer 110kV,Three Phase Oil Immersed Transformer 320MVA,Power Three Phase Oil Immersed Transformer, 10kv transformer oil immersed,10kv oil immersed distribution transformer,amorphous alloy transformer oil immersed, 

## summary
> Manufacturer, Exporter, Brands: GG, Guangzhou Guanggao High Voltage Electric Apparatus Co.,Ltd. was recommended as the first batch of urban and rural power grid construction and transfor, Established in 1958, Employees: 500~999, Export ratio: 50% - 60%, Primary markets: South America, Eastern Asia, Southeast Asia, Middle East, Africa.

## Company Information

 *  [Company Profile](https://www.gz-gg.com/aboutus.html): Overview, history, teams and core capabilities.
 *  [Factory & Manufacturing](https://www.gz-gg.com/factory.html): Production capacity, OEM/ODM capabilities, and R&D strength.
 *  [Quality Control](https://www.gz-gg.com/quality.html): ISO certifications, quality standards, and compliance.
 *  [Contact Us](https://www.gz-gg.com/contactus.html): Global offices, inquiries, and support channels.

## Product Category

* [Single Phase Pole Mounted Distribution Transformer](https://www.gz-gg.com/supplier-4782418-single-phase-pole-mounted-distribution-transformer): Keywords: Pole Mounted Power Distribution Transformer,Single Phase Pole Mounted Transformer,Completely Self Protected Transformer.
* [Oil Immersed Distribution Transformer](https://www.gz-gg.com/supplier-4782424-oil-immersed-distribution-transformer): Keywords: Oil Filled Distribution Transformers,Energy Efficient Distribution Transformers,Power Distribution Transformer.
* [Pad Mounted Distribution Transformer](https://www.gz-gg.com/supplier-4782419-pad-mounted-distribution-transformer): Keywords: Pad Mounted Power Transformer,Single Phase Padmount Transformer,Single Phase Pad Mounted Transformer.
* [Dry Type Distribution Transformer](https://www.gz-gg.com/supplier-4785201-dry-type-distribution-transformer): Keywords: Dry Distribution Transformer,Dry Type Three Phase Transformer,Dry Type Power Transformer.
* [Oil Immersed Power Transformer](https://www.gz-gg.com/supplier-4782422-oil-immersed-power-transformer): Keywords: Oil Immersed Type Transformer,Three Phase Oil Immersed Transformer,Oil Filled Power Transformer.
* [Prefabricated Substation](https://www.gz-gg.com/supplier-4782427-prefabricated-substation): Keywords: Prefab Substation,Prefabricated Substation Buildings,Prefabricated Substation Manufacturers.
* [PV Pad Mounted Transformer](https://www.gz-gg.com/supplier-4782428-pv-pad-mounted-transformer): Keywords: Three Phase Pad Mounted Transformer,Pad Mounted Transformer Manufacturers,3 Phase Pad Mounted Transformer.
* [Low Voltage Switchgear](https://www.gz-gg.com/supplier-4784646-low-voltage-switchgear): Keywords: IEC LV Switchgear,Low Voltage Switchgear Manufacturers,IEC Low Voltage Switchgear.

## Featured Products

* [160kVA Amorphous Alloy 10kV Oil-immersed Distribution Transformer S(B)H21-NX2 Energy Efficiency Level 2](https://www.gz-gg.com/videos-53941598-160kva-amorphous-alloy-10kv-oil-immersed-distribution-transformer-s-b-h21-nx2-energy-efficiency-leve.html): Keywords: 10kv transformer oil immersed,10kv oil immersed distribution transformer,amorphous alloy transformer oil immersed.
* [IEC 60076 Prefabricated Substation Buildings Manufacturers 10kV 0.4KV](https://www.gz-gg.com/sale-53762161-iec-60076-prefabricated-substation-buildings-manufacturers-10kv-0-4kv.html): Keywords: Prefabricated Substation Buildings 10kV,Prefab Substation 10kV 0.4KV,IEC 60076 Prefabricated Substation Manufacturers.
* [GCK GCL Low Voltage Switchgear Manufacturers 660V IP30 IP40](https://www.gz-gg.com/sale-53759336-gck-gcl-low-voltage-switchgear-manufacturers-660v-ip30-ip40.html): Keywords: GCL LV Switchgear Manufacturers,GCK Switchgear 660V,GCK Low Voltage Switchgear Manufacturers.
* [Photovoltaic PV Pad Mounted Transformer Manufacturers 3 Phase ONAN Cooling](https://www.gz-gg.com/sale-53941984-photovoltaic-pv-pad-mounted-transformer-manufacturers-3-phase-onan-cooling.html): Keywords: Photovoltaic 3 Phase Pad Mounted Transformer,PV Pad Mounted Transformer Manufacturers,Three Phase Pad Mounted Transformer Manufacturers.
* [Power Three Phase Oil Immersed Transformer 110kV 320MVA Capacity](https://www.gz-gg.com/videos-53947017-power-three-phase-oil-immersed-transformer-110kv-320mva-capacity.html): Keywords: Three Phase Oil Immersed Transformer 110kV,Three Phase Oil Immersed Transformer 320MVA,Power Three Phase Oil Immersed Transformer.
* [160kVA 20kV Dry Type Distribution Transformer SC(B)18-NX1 IEC Standard](https://www.gz-gg.com/videos-53982225-160kva-20kv-dry-type-distribution-transformer-sc-b-18-nx1-iec-standard.html): Keywords: 160kVA Dry Type Distribution Transformer,Dry Type Distribution Transformer IEC Standard,Dry Distribution Transformer SC(B)18-NX1.
* [Pole-Mounted 10kV Single-Phase Power Distribution Transformer](https://www.gz-gg.com/videos-54247234-pole-mounted-10kv-single-phase-power-distribution-transformer.html): Keywords: 50kV Power Distribution Transformer,Pole Mounted Power Distribution Transformer.
* [25kVA-250kVA Three Phase Padmount Transformer Copper Winding Pad Mounted Power Transformer](https://www.gz-gg.com/sale-53759283-25kva-250kva-three-phase-padmount-transformer-copper-winding-pad-mounted-power-transformer.html): Keywords: 250kVA Three Phase Padmount Transformer,25kVA Three Phase Padmount Transformer,Copper Winding Pad Mounted Power Transformer.
* [2500kVA 10kV Oil Immersed Distribution Transformer S(B)22-NX1 Energy Efficiency Level 1](https://www.gz-gg.com/videos-54258906-2500kva-10kv-oil-immersed-distribution-transformer-s-b-22-nx1-energy-efficiency-level-1.html): Keywords: 2500kVA oil immersed transformer,10kV distribution transformer with warranty,S(B)22-NX1 energy efficiency transformer.
* [167kV Single Phase Pole Mounted Power Distribution Transformer 10kVA-333kVA](https://www.gz-gg.com/videos-53996904-167kv-single-phase-pole-mounted-power-distribution-transformer-10kva-333kva.html): Keywords: 167kV Pole Mounted Power Distribution Transformer,Pole Mounted Power Distribution Transformer 10kVA,Single Phase Pole Mounted Transformer 333kVA.

## Case Studies & Applications

* [Congrats to Guanggao Electric on Successfully Passing Lightning Impulse Wavefront Time Measurement Verification!](https://www.gz-gg.com/cases/congrats-to-guanggao-electric-on-successfully-passing-lightning-impulse-wavefront-time-measurement-v-39679.html)
* [Honor Proves Strength; Integrity Builds Brand](https://www.gz-gg.com/cases/honor-proves-strength-integrity-builds-brand-39680.html)
* [Guanggao Electric: PV Transformers Delivered to the Philippines – Powering Energy Transition](https://www.gz-gg.com/cases/guanggao-electric-pv-transformers-delivered-to-the-philippines-powering-energy-transition-45902.html)
* [Good News | Guanggao Electric Honored as "Guangzhou Time-honored Brand"](https://www.gz-gg.com/cases/good-news-guanggao-electric-honored-as-guangzhou-time-honored-brand-48501.html)

## FAQ

Q: What key parameters need to be provided when selecting a transformer?
A: Three categories of core parameters are required: ① Electrical parameters (rated power, input/output voltage level, frequency); ② Environmental parameters (indoor/outdoor installation location, maximum/minimum temperature, presence of dust/humidity); ③ Functional requirements (whether special functions like lightning protection, noise reduction, and capacity regulation are needed). These parameters ensure the selection of a fully applicable product.

Q: How long is the warranty period of a transformer?
A: The deadline is 12 months after commissioning or 18 months from dispatch, whichever comes first.

Q: How long is the validity period of a transformer quotation? What factors affect the price?
A: The validity period of a regular quotation is 15-30 days. The price is mainly affected by three factors: ① Fluctuations in the market prices of raw materials (e.g., copper, silicon steel sheets); ②  Customization requirements (special voltage, protection level, etc., which increase production costs). If the quotation validity period is exceeded, the price needs to be recalculated.

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## News & Blog

* [Honor for Guangzhou Guanggao: "Photovoltaic Combined Transformer" in 2025 Guangzhou Innovative Products Catalog](https://www.gz-gg.com/news/honor-for-guangzhou-guanggao-photovoltaic-combined-transformer-in-2025-guangzhou-innovative-products-252707.html)
* [Congrats! 3 self-developed products of Guangzhou Guanggao are in 2025 Guangdong Famous High-Tech Products](https://www.gz-gg.com/news/congrats-3-self-developed-products-of-guangzhou-guanggao-are-in-2025-guangdong-famous-high-tech-prod-252713.html)
* [Good News! Guanggao  Wins the Science and Technology Second Prize, Forging Core Strength through Innovation](https://www.gz-gg.com/news/good-news-guanggao-wins-the-science-and-technology-second-prize-forging-core-strength-through-innova-275328.html)
* [Empowering the Arteries of the Greater Bay Area! Guanggao Electric infuses enduring power into Haizhu Bay Tunnel.](https://www.gz-gg.com/news/empowering-the-arteries-of-the-greater-bay-area-guanggao-electric-infuses-enduring-power-into-haizhu-290319.html)
* [Guanggao Successfully Passes Clean Production Audit and Receives Municipal Certification](https://www.gz-gg.com/news/guanggao-successfully-passes-clean-production-audit-and-receives-municipal-certification-366634.html)