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.
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
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
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
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.
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）
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
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.
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
Company Profile
Guangzhou Guanggao High Voltage Electric Apparatus Co.,Ltd.
Contact Person: MsLiu
