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TNB's Approved Testing Laboratory

A part of Quality Assurance

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Region
Country
Laboratory Name
Address
Laboratory Type
Remarks
Asia
Japan
Central Research Institute of Electric Power Industry (CRIEPI)
2-6-1, Nagasaka Yokosuka-shi Kanagawa 240-0196
High Power
Accredited to ISO/IEC 17025  & STL member under JSTC.
Asia
China
China Electric Power Research Institute
No.15, Xiaoying East Road, Qinghe, Haidian District, Beijing, China
High Voltage
Accredited to ISO/IEC 17025
Asia
China
China High Power Testing Liaison P.R China
High Voltage
Accredited to ISO/IEC 17026
Asia
Thailand
Daihen Electric Co., Ltd.
258-259 M. 6, Thasa-an, Bang-pakong, Chachoeng-sao, 24130, Thailand
High Voltage
Accredited to ISO/IEC 17025
Asia
India
EMCO Limited, Transformer Testing Laboratory
Plot No. F-5, Road No. 28, Wagle Industrial Estate, Thane (W), Maharashtra
High Voltage
Accredited to ISO/IEC 17025 by NABL
Asia
China
Electric Power Fitting Quality Inspection Center of Nanjing State Power
No. 49, Heyen Road, Nanjing, Jiangsu, China
High Voltage
Accredited to ISO/IEC 17025 by CNAS
Asia
Thailand
Electrical And Electronics Institute, Foundation For Industrial Development
975, Moo 4, Bangpoo Industrial Estate Soi 8, Sukhumvit Road km. 37, Phreak Sa, Mueang, Samut Prakan
Medium Voltage
Accredited to ISO/IEC 17025
Asia
India
Electrical Research and Developement Association (ERDA)
Erda Road G.I.D.C Makarpura, Vadodara – 390010 India. Hyderabad – 500 098, Andra Pradesh State, India.
High Power
Accredited to ISO/IEC 17025  & ASTA Approved Labs
Asia
Japan
Fuji Electric High-Power & High-Voltage Testing Laboratory
7, Yawata-Kaigandori, Ichihara-shi, Chiba 290-8511, Japan.
High Voltage & High Power
Accredited to ISO/IEC 17025  & STL member under JSTC.
Asia
India
GE T&D India Limited
Plot No. 46, SIPCOT Industrial Complex, Zuzuwadi Village, Hosur, Tamil Nadu, India
High Voltage
Accredited to ISO/IEC 17025
Asia
China
Guangdong Testing Institute of Product Quality Supervision/Guangdong Electrical Safety Testing Institute of China State Bureau Of Quality And Technical Supervision
No 68, Xihudong Road, Shilong Town Dong Guan City, Guangdong Province, P.R. China
High Power
Accredited to ISO/IEC 17025
Asia
China
Henan High Voltage Apparatus Research Institute Co., Ltd.
Crossing of Fuxing Road & Meiyuan Road, Xingcheng District, Pingdingshan, Henan, China
High Voltage
Accredited to ISO/IEC 17025
Asia
Japan
High Power Testing Laboratory Nissin Electric Co., Ltd.
47, Umezu-Takase-cho, Ukyo-ku, Kyoto-shi, Kyoto 615-8686
High Voltage & High Power
Accredited to ISO/IEC 17025  & STL member under JSTC.
Asia
Japan
Hitachi High Power Laboratory, Kokubu Works, Hitachi, Ltd.
1-1, Kokubu-cho, Hitachi-shi, Ibaragi 316-8501, Japan
High Voltage & High Power
Accredited to ISO IEC 17025  & STL member under JSTC.
Asia
China
Intertek Testing Service (Guangzhou) Ltd.
No. 3-1, Xinhai Xinyi Road, Huangge Town, Nansha District, Guangzhou City, China
High Voltage
Accredited to ISO/IEC 17025
Asia
Japan
Japan AE Power Systems Corp.
Kokubu High Power Laboratory 1-1, Kokubu-cho Hitachi-shi Ibaragi 316-8501
High Voltage & High Power
Accredited to ISO/IEC 17025 & STL member under JSTC.
Asia
Japan
Japan AE Power Systems Corp.
515, Kaminakamizo Higashimakado, Numazu-shi, Shizuoka 410-8588, Japan.
High Voltage & High Power
Accredited to ISO/IEC 17025  & STL member under JSTC
Asia
China
Jiangsu Jiameng Electrical Equipment Co., Ltd. Test Center
No. 5, Zhongli Road, Binhai Industrial Park, Qidong, Jiangsu, China
High Voltage
Accredited to ISO/IEC 17025
Asia
India
Kinectrics India Private Limited
Sy No.125, Banda Mailaram Village, Mulugu Mandal, Siddipet District, Telangana – 502 336, India
High Voltage
Accredited to ISO/IEC 17025
Asia
South Korea
Korea Electrotechnology Research Institute -KERI
Bulmosan-gil 70  Changwon-si  Gyeongsangnam-do  South Korea   641-120
High Voltage & High Power
Accredited to ISO/IEC 17025 and accepted as STL 10th members.
Asia
China
Liaoning H.V. Apparatus Quality Test Co., Ltd.
No. 16, Hushitai South Street, Shenbei New Area, Shenyang, Liaoning, China
High Power
Accredited to ISO/IEC 17025
Asia
India
Mehru Electrical & Mechanical Engineers
SP2/180 RIICO Industrial Area, Kehrani, Bhiwadi – 3013019 Alwal, Rajastan
High Power
Accredited to ISO/IEC 17025 by NABL
Asia
Japan
Mitsubishi Electric Corp. High Power Laboratory
8-1-1, Tsukaguchi-Honmachi, Amagasaki-shi, Hyogo 661-8661
High Power
Accredited to ISO/IEC 17025  & STL member under JSTC.
Asia
Japan
NGK High Voltage Laboratory
32 Ikeda, Shimozue Komaki-shi Aichi 485-0825
High Voltage
Accredited to ISO/IEC 17025
Asia
Indonesia
PT PLN (Persero) Pusat Sertifikasi – LMK Lab
Jl. Duren Tiga No. 102, Kalibata, Jakarta Selatan Indonesia
High Voltage
Accredited to ISO/IEC 17025
Asia
Indonesia
PT Preformed Line Products Indonesia (PLP Indonesia Laboratory)
JI. Irian VII Blok MM-4-2 Kawasan Industri MM2100 Cikarang - Bekasi 17530 Jawa Barat, Indonesia
High Voltage & Mechanical Tests
Accredited to ISO/IEC 17025
Asia
South Korea
Power Testing & Technology Institute (PT&T), LSIS Co. Ltd.,
Wolmyeong-ro, 201-68, Heungdeok-gu, Cheongju-si, Chungcheongbuk-do, 361-817
High Voltage & High Power
Accredited to ISO/IEC 17025 by ASTA
Asia
Thailand
Power Transformer Testing Laboratory ABB Limited
322 Moo 4, Bangpoo Industrial Estate, Muang, Samutprakam, 102820, Thailand
High Voltage
Accredited to ISO/IEC 17025
Asia
China
Quality Inspection and Test Center for Electrical Equipment of Power Industry (CEPRI)
No. 143 Luoyu Road, Hongshan District, Wuhan, Hubei Province 430074, China
High Voltage
Accredited to ISO/IEC 17025 by CNAS
Asia
China
Shanghai Intelligent Service and Technology Co., Ltd.
Floor 1 Building 2, No. 258 Jinzang Road, Pudong New District, Shanghai, P.R. China
High Power (Power Cables and Accessories)
Accredited to ISO/IEC 17025
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Current Revision: R28 dated 3rd August 2026

TNB Approved Laboratory List (PDF Version)

Please take note of the following:-

  1. The listing of the laboratories is only valid at the date the laboratories were first listed.

  2. Assessment of each laboratory is only done by the checking of documents and verification at the related national accreditation body’s website.

  3. Manufacturers who intend to use any of the laboratories listed shall ensure that the laboratory is accredited for the intended scope at the time the tests are conducted.

  4. Manufacturers shall consult and get the consent of the related TNB Division on the laboratory selected for the testing.


Disclaimer :-

TNB shall not be held responsible if the manufacturer’s product type test is rejected due to the  manufacturer failing to adhere to items 1-4 above.

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