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Track Record

Transformers designed, built and tested by SINTRA to SPLN for PLN, to IEC 60076 for industry across Indonesia and Southeast Asia, and to IEEE/ANSI C57 for the United States.

41150 kV power transformers in PLN service
5,000Distribution transformers a year for PLN, typically
120 MVALargest IEC unit, 150/33 kV, for an iron smelter
140 MVALargest IEEE/ANSI unit, 138/34.5 kV, for the US
70+Units exported to the US, Taiwan, Australia, Malaysia and Singapore

PLN, Indonesia’s State Utility

Since 2017, 41 SINTRA 150 kV substation power transformers have passed Site Acceptance Test, designed and tested to SPLN. Alongside them, SINTRA supplies PLN’s 20 kV network with 1-phase and 3-phase pole-mounted distribution transformers, typically around 5,000 units a year.

41150 kV power transformers in service across Indonesia
2025

Each point is one 150 kV transformer that has passed its Site Acceptance Test with PLN. Positions are approximate, at substation-town level.

Region

Rating

Substations

    3160 MVA, 150/22 kV
    1030 MVA, 150/22 kV
    7Regions: Sumatera 8, Jawa 13, Bali 1, Kalimantan 7, Sulawesi 8, Maluku 2, Papua 2
    6More 60 MVA units in production
    All 41 energized substations

    Where a unit was relocated by PLN after delivery, the substation it now serves is shown.

    No.SubstationProvinceRegionRatingSAT date
    1GI Pier (formerly Babat)East JavaJawa60 MVA30 Nov 2017
    2GI IsimuGorontaloSulawesi60 MVA3 Jan 2018
    3GI KualanamuNorth SumatraSumatera60 MVA30 Jan 2018
    4GI CikumpayWest JavaJawa60 MVA2 Feb 2018
    5GI KapalBaliBali60 MVA12 Mar 2018
    6GI BulukumbaSouth SulawesiSulawesi60 MVA19 Mar 2018
    7GI WaruEast JavaJawa60 MVA19 Mar 2018
    8GI Tanjung RedebEast KalimantanKalimantan60 MVA23 Mar 2018
    9GI SiwaSouth SulawesiSulawesi60 MVA4 Apr 2018
    10GI TandesEast JavaJawa60 MVA11 Apr 2018
    11GI Balong BendoEast JavaJawa60 MVA18 Apr 2018
    12GI Tanjung PuraNorth SumatraSumatera60 MVA29 Jun 2018
    13GI DumaiRiauSumatera60 MVA31 Jul 2018
    14GI SukadanaWest KalimantanKalimantan30 MVA30 Nov 2018
    15GI Jati AgungLampungSumatera60 MVA1 Jan 2019
    16GI CibatuWest JavaJawa60 MVA4 Jan 2019
    17GI PangkepSouth SulawesiSulawesi30 MVA19 Feb 2019
    18GI LuwukCentral SulawesiSulawesi60 MVA6 Mar 2019
    19GI Taman MekarWest JavaJawa60 MVA5 Apr 2019
    20GI Taman MekarWest JavaJawa60 MVA12 Apr 2019
    21GI Payo SelincahJambiSumatera60 MVA22 Oct 2019
    22GI Cilegon LamaBantenJawa60 MVA26 Oct 2019
    23GI Sepatan II (formerly Serang)BantenJawa60 MVA7 Nov 2019
    24GI BinjaiNorth SumatraSumatera60 MVA23 Dec 2019
    25GI KayutangiSouth KalimantanKalimantan60 MVA8 Jan 2020
    26GI KolakaSoutheast SulawesiSulawesi30 MVA12 Feb 2020
    27GI BaubauSoutheast SulawesiSulawesi60 MVA31 Mar 2020
    28GI Sukarame (formerly Liwa)LampungSumatera60 MVA18 Apr 2020
    29GI Kembangan II (formerly Gudang Pulau Gadung)JakartaJawa60 MVA20 Jul 2020
    30GI Kuala Pembuang (formerly Ampana)Central KalimantanKalimantan30 MVA15 Aug 2020
    31GI Donggala (formerly Kendari)Central SulawesiSulawesi60 MVA8 Mar 2021
    32GI Nanga Bulik (formerly Masamba)Central KalimantanKalimantan30 MVA27 May 2021
    33GI PiruMalukuMaluku30 MVA30 Jan 2022
    34GI New BalikpapanEast KalimantanKalimantan60 MVA31 Oct 2023
    35GI Lampung 1LampungSumatera60 MVA19 Nov 2023
    36GI Sei DurianSouth KalimantanKalimantan30 MVA25 Nov 2023
    37GI KairatuMalukuMaluku30 MVA13 Dec 2023
    38GI ManokwariWest PapuaPapua30 MVA10 Aug 2024
    39GI ManokwariWest PapuaPapua30 MVA10 Aug 2024
    40GI CigelerengWest JavaJawa60 MVA13 Sep 2024
    41GIS SawahanEast JavaJawa60 MVA7 Jul 2025

    In Production for PLN

    No.SubstationRatingStatus
    1GI Jatiluhur60 MVAOngoing
    2GI Kadipaten Majalengka60 MVAOngoing
    3GI Lippo Cikarang60 MVAOngoing
    4GI Tulungagung60 MVAOngoing
    5GI Monokromo60 MVAOngoing
    6GI Batam60 MVAOngoing

    United States, IEEE/ANSI C57

    In technical partnership with TECO and TECO Westinghouse, SINTRA designs, builds and tests transformers to IEEE/ANSI C57 for the US market, from 500 kVA pad-mounted units to 140 MVA, 138 kV substation transformers.

    Power Transformers Above 5 MVA, Selected

    Rating, MVAVoltage, kVIndustryDelivery
    524.94 / 4.16Oil & gasSep 2024
    2034.5 / 13.8IndustrialDec 2024
    15/20/25138 / 4.16Oil & gasSep 2025
    3034.5 / 13.8LNG export terminalFeb 2026
    12/17.2/22.446 / 4.16Copper miningApr 2026
    20/25/33138 / 6.9LNG export terminalJul 2026
    40/5069 / 13.8PetrochemicalsAug 2026
    30/40/50138 / 13.8Electronics manufacturingSep 2026
    1035 / 8.3University campusSep 2026
    75/84/111/140138 / 34.5LNG export terminalOct 2026
    75/84/112/125/140138 / 24.94Electronics manufacturingAug 2027

    Multiple ratings are the cooling stages, for example ONAN/ONAF/ONAF. Deliveries after October 2026 are scheduled.

    Distribution Transformers Below 5,000 kVA, Selected

    Rating, kVAVoltage, kVIndustryDelivery
    1,00012.47 / 0.48IndustrialSep 2024
    3,00024.9 / 4.16Oil & gas compressionNov 2024
    2,50013.8 / 0.48IndustrialDec 2024
    50123 / 0.48IndustrialMar 2025
    1,0004.16 / 0.48Industrial gasesJul 2025
    1,5004.16 / 0.48Electrical equipmentJan 2026
    2,57613.8 / 0.48LNG export terminalMay 2026
    2,50012.47 / 0.48Electric utilityAug 2026

    ANSI C57 Pad-Mounted Units for Oil & Gas in Indonesia

    YearRatingTypeUnitsIndustry
    2008100, 225 kVA13,200Δ / 480 / 960 V, pad-mount substation54Oil & gas
    2000150 kVA13,200Δ / 480 / 960 V, pad-mount substation10Oil & gas
    1999300, 500 kVA1,000–1,100Δ / 381Y V, pad-mounted distribution32Oil & gas services

    Industry, IEC 60076

    For private-sector plants in Indonesia and Southeast Asia, SINTRA builds power and distribution transformers to IEC 60076, customized to the site’s voltage, vector group and load.

    Power Transformers Above 5 MVA, Selected

    Rating, MVAVoltage, kVVector groupIndustry
    120150 / 33YNyn0+dIron smelter
    5533 / 11YNd11Pulp & paper
    5033 / 11YNyn0+dNickel mining
    4570 / 35YNd11Iron smelter
    4013.8 / 13.8Dyn11Fertilizers
    1820 / 6.3Dyn11Petrochemicals

    Industries We Supply

    • Pulp & paper
    • Steel
    • Iron smelting and ferro-alloys
    • Nickel mining
    • Aluminum production
    • Petrochemicals
    • Fertilizers
    • Glass
    • Ceramics
    • Paper products
    • Textiles and fiber
    • Oil & gas
    • Telecommunications
    • Commercial and residential buildings

    Timor-Leste’s National Utility

    In 2024 SINTRA delivered 269 three-phase pole-mounted distribution transformers, from 25 to 400 kVA, for the national electricity network of Timor-Leste.

    269Units delivered in 2024
    8Ratings: 25, 50, 100, 160, 200, 250, 315 and 400 kVA

    Request References for Your Project

    We can provide SAT reports, test reports, delivery records and reference letters for comparable units.

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