Guangzhou Guanggao High Voltage Electric Apparatus Co.,Ltd.
Verified Supplier
1 Years
guangzhou
Since 1958
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Single Phase Pole Mounted Distribution Transformer

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Oil Immersed Distribution Transformer

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Pad Mounted Distribution Transformer

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Dry Type Distribution Transformer

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Oil Immersed Power Transformer

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Prefabricated Substation

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PV Pad Mounted Transformer

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Low Voltage Switchgear

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Why Can We Always Ensure Excellent Quality

Quality Control

Quality & Certifications
All our transformers are manufactured in compliance with international authoritative standards and regional mandatory requirements, with official third-party certification and strict whole-process quality control to ensure stable and reliable product performance for global customers.

Guangzhou Guanggao High Voltage Electric Apparatus Co.,Ltd.

Guangzhou Guanggao High Voltage Electric Apparatus Co.,Ltd.






Certification

Guangzhou Guanggao High Voltage Electric Apparatus Co.,Ltd. Certifications
Standard: UL
Number: UL-US-2405462-0
Issue Date: 2024-03-04
Scope/Range: Over 600V liquid-filled distribution transformers, conforming to IEEE C57.12.00.
Issued By: UL Solutions
Guangzhou Guanggao High Voltage Electric Apparatus Co.,Ltd. Certifications
Standard: UL
Number: UL-US-2304763-0
Issue Date: 2023-02-08
Scope/Range: XPLH - Transformers, Distribution, Liquid-filled Type, Over 600 Volts
Issued By: UL LLC
Guangzhou Guanggao High Voltage Electric Apparatus Co.,Ltd. Certifications
Standard: UDEM
Number: M.2024.206.C106878
Issue Date: 2024-09-18
Expiry Date: 2029-09-17
Scope/Range: Dry-Type Amorphous Alloy Iron Core Distribution Transformer
Issued By: UDEM International Certification Body
Guangzhou Guanggao High Voltage Electric Apparatus Co.,Ltd. Certifications
Standard: GB/T 45001-2020 / ISO 45001:2018
Number: No: 0070025S51731R6M
Issue Date: 2025-07-25
Expiry Date: 2028-07-25
Scope/Range: DESIGN, DEVELOPMENT, PRODUCTION AND INSTALLATION SUPPORT SERVICE OF 220KV AND BELOW OIL-IMMERSED ELECTRIC POWER TRANSFORMER, DRY
Issued By: Zhongjian Certification Co., Ltd.
Guangzhou Guanggao High Voltage Electric Apparatus Co.,Ltd. Certifications
Standard: Inspection Report
Number: B2016083
Issue Date: 2012-05-28
Scope/Range: Three Phase Transformer Rated Voltage 220 + 10 - 6 x 1.5% / 121 / 11 kV, Power 180000/180000/90000 kVA, YNyn0d11 50 Hz, Cooling
Issued By: CESI S.p.A.（Testing & Certification Division, Business Area Certification）
Guangzhou Guanggao High Voltage Electric Apparatus Co.,Ltd. Certifications
Standard: Factory Acceptance Test Report
Number: TIC 3070-14
Issue Date: 2014-08-13
Scope/Range: Factory Acceptance Test on a Three-phase Power Transformer 63 MVA/110 kV
Issued By: KEMA
Guangzhou Guanggao High Voltage Electric Apparatus Co.,Ltd. Certifications
Standard: CERTIFICATE OF CONFORMITY OF QUALITY MANAGEMENT SYSTEM CERTIFICATION
Number: 0070025Q52524R8M
Issue Date: 2025-07-25
Expiry Date: 2028-07-24
Scope/Range: DESIGN, DEVELOPMENT, PRODUCTION AND INSTALLATION SUPPORT SERVICE OF 220KV AND BELOW OIL-IMMERSED ELECTRIC POWER TRANSFORMER, DRY
Issued By: Zhongjian Certification Co., Ltd.
Guangzhou Guanggao High Voltage Electric Apparatus Co.,Ltd. Certifications
Standard: CERTIFICATION OF REPORT
Number: CTQC/B-11.093
Issue Date: 2024-03-24
Expiry Date: 2029-03-24
Scope/Range: Power transformer of model SZ11-8000/35 with serial number A02010110049, covering the following test items: routine tests, tempe
Issued By: CHINA NATIONAL TRANSFORMER QUALITY SUPERVISION AND TESTING CENTER
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