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Dowei Electric Current Transformer LZZW-12

Dowei Electric Current Transformer LZZW-12

Product catalog summary

Overview: This document provides detailed specifications and descriptions for various types of current transformers manufactured by Ningbo Dowei Electric Co., Ltd. These transformers are designed for both indoor and outdoor applications across different voltage levels, including 12kV, 24kV, and 36kV. The document also covers residual and bushing current transformers.

General Specifications:

Compliance with standards: IEC 61869, ANSI/IEEE C57.13, NEMA.
Certifications: ISO 9001, KEMA, CESI, CE, TUV, UL, ASTA.
Seismic and structural design standards: ETGI-1.020, IEEE Std 693, NCh2369, ASTM A325, ANSI/AISC 360, AWS D1.1.
High altitude correction capability up to 5000m.
High-quality epoxy resin insulation ensuring low partial discharge and high accuracy.
Special accuracy classes available: PR, PX, PXR, TPX, TPY, TPZ, or C 100-800 (IEEE).

12kV Current Transformer (Indoor Type):

Rated current ratios range from 10-200/5 A.
Accuracy classes include combinations like 0.2(S)/0.2(S), 0.2(S)/0.5, and 0.2(S)/10P.
Rated output varies, with ALF FS values provided for different configurations.
Short-time thermal current and dynamic current ratings are specified.

24kV Current Transformer (Indoor Type):

Rated current ratios range from 15-30/5 A to 1250-2500/5 A.
Accuracy classes and rated outputs are specified similarly to the 12kV type.

36kV Current Transformer (Indoor Type):

Rated current ratios range from 20-200/5 A to 2000-2500/5 A.
Specifications follow the same pattern as lower voltage transformers.

Residual Current Transformer (RCT):

Rated voltage is 0.72kV with various rated ratios and accuracy classes.
Rated outputs are specified for different configurations.

Bushing Current Transformer (BCT):

Rated current ratios and accuracy classes are provided.
Rated outputs and ALF FS values are detailed.

Outdoor Type Transformers:

Specifications for 12kV, 24kV, and 36kV outdoor transformers are similar to indoor types, with adjustments for outdoor conditions.
Rated current ratios, accuracy classes, and thermal/dynamic current ratings are provided.

Conclusion: Ningbo Dowei Electric Co., Ltd. offers a comprehensive range of current transformers suitable for various applications in power transmission and distribution, adhering to international standards and ensuring high performance and reliability.

Catalog excerpts

Dowei Electric Current Transformer LZZW-12-1

Power Transmission & Distribution One stop equipments solution Dry Type Current Transformer

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Dowei Electric Current Transformer LZZW-12-2

12kV Current Transformer (Indoor type) General Description: • IEC 61869, ANSI/IEEE C57.13, NEMA • ISO 9001, KEMA, CESI, CE, TUV, UL, ASTA • Seismic design, ETGI-1.020, IEEE Std 693, NCh2369 • Structural design, ASTM A325, ANSI/AISC 360, AWS D1.1 • High altitude correction per IEC 61869 & IEEE C57, ~ 5000m • High Quality Epoxy Resin Insulation, Low partial discharge, High accuracy • Special accuracy classes PR, PX, PXR, TPX, TPY, TPZ or C 100-800 (IEEE), etc.. 12kV Epoxy Resin Current Transformer (Indoor type) NINGBO DOWEI ELECTRIC CO., LTD. 608, Lingyun Building No.1, High-tech Zone, Ningbo,...

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Dowei Electric Current Transformer LZZW-12-3

24kV Current Transformer (Indoor type)General Description: • IEC 61869, ANSI/IEEE C57.13, NEMA • ISO 9001, KEMA, CESI, CE, TUV, UL, ASTA • Seismic design, ETGI-1.020, IEEE Std 693, NCh2369 • Structural design, ASTM A325, ANSI/AISC 360, AWS D1.1 • High altitude correction per IEC 61869 & IEEE C57, ~ 5000m • High Quality Epoxy Resin Insulation, Low partial discharge, High accuracy • Special accuracy classes PR, PX, PXR, TPX, TPY, TPZ or C 100-800 (IEEE), etc.. 24kV Epoxy Resin Current Transformer (Indoor type) NINGBO DOWEI ELECTRIC CO., LTD. 608, Lingyun Building No.1, High-tech Zone, Ningbo, Zhejiang,...

Open the catalog to page 3

Dowei Electric Current Transformer LZZW-12-4

36kV Current Transformer (Indoor type) General Description: • IEC 61869, ANSI/IEEE C57.13, NEMA • ISO 9001, KEMA, CESI, CE, TUV, UL, ASTA • Seismic design, ETGI-1.020, IEEE Std 693, NCh2369 • Structural design, ASTM A325, ANSI/AISC 360, AWS D1.1 • High altitude correction per IEC 61869 & IEEE C57, ~ 5000m • High Quality Epoxy Resin Insulation, Low partial discharge, High accuracy • Special accuracy classes PR, PX, PXR, TPX, TPY, TPZ or C 100-800 (IEEE), etc.. 36kV Epoxy Resin Current Transformer (Indoor type) NINGBO DOWEI ELECTRIC CO., LTD. 608, Lingyun Building No.1, High-tech Zone, Ningbo,...

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Dowei Electric Current Transformer LZZW-12-5

Residual Current Transformer (RCT) General Description: • IEC 61869, ANSI/IEEE C57.13, NEMA • ISO 9001, KEMA, CESI, CE, TUV, UL, ASTA • Seismic design, ETGI-1.020, IEEE Std 693, NCh2369 • Structural design, ASTM A325, ANSI/AISC 360, AWS D1.1 • High altitude correction per IEC 61869 & IEEE C57, ~ 5000m • High Quality Epoxy Resin Insulation, Low partial discharge, High accuracy Residual Current Transformer (RCT) Rated Voltage(kV) Rated ratio(A) Accuracy class Rated output(VA) NINGBO DOWEI ELECTRIC CO., LTD. 608, Lingyun Building No.1, High-tech Zone, Ningbo, Zhejiang, China. 315048 Tel: +86-15088801930...

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Dowei Electric Current Transformer LZZW-12-6

• ISO 9001, KEMA, CESI, CE, TUV, UL, ASTA • Seismic design, ETGI-1.020, IEEE Std 693, NCh2369 • Structural design, ASTM A325, ANSI/AISC 360, AWS D1.1 • High altitude correction per IEC 61869 & IEEE C57, ~ 5000m • High Quality Epoxy Resin Insulation, Low partial discharge, High accuracy Bushing Current Transformer (BCT) NINGBO DOWEI ELECTRIC CO., LTD. 608, Lingyun Building No.1, High-tech Zone, Ningbo, Zhejiang, China. 315048 Tel: +86-15088801930 | [email protected] | www.dowei-electric.com

Open the catalog to page 6

Dowei Electric Current Transformer LZZW-12-7

12kV Current Transformer (Outdoor type) General Description: • IEC 61869, ANSI/IEEE C57.13, NEMA • ISO 9001, KEMA, CESI, CE, TUV, UL, ASTA • Seismic design, ETGI-1.020, IEEE Std 693, NCh2369 • Structural design, ASTM A325, ANSI/AISC 360, AWS D1.1 • High altitude correction per IEC 61869 & IEEE C57, ~ 5000m • High Quality Epoxy Resin Insulation, Low partial discharge, High accuracy • Special accuracy classes PR, PX, PXR, TPX, TPY, TPZ or C 100-800 (IEEE), etc.. 12kV Epoxy Resin Current Transformer (Outdoor type) NINGBO DOWEI ELECTRIC CO., LTD. 608, Lingyun Building No.1, High-tech Zone, Ningbo,...

Open the catalog to page 7

Dowei Electric Current Transformer LZZW-12-8

24kV Current Transformer (Outdoor type) General Description: • IEC 61869, ANSI/IEEE C57.13, NEMA • ISO 9001, KEMA, CESI, CE, TUV, UL, ASTA • Seismic design, ETGI-1.020, IEEE Std 693, NCh2369 • Structural design, ASTM A325, ANSI/AISC 360, AWS D1.1 • High altitude correction per IEC 61869 & IEEE C57, ~ 5000m • High Quality Epoxy Resin Insulation, Low partial discharge, High accuracy • Special accuracy classes PR, PX, PXR, TPX, TPY, TPZ or C 100-800 (IEEE), etc.. 24kV Epoxy Resin Current Transformer (Outdoor type) NINGBO DOWEI ELECTRIC CO., LTD. 608, Lingyun Building No.1, High-tech Zone, Ningbo,...

Open the catalog to page 8

Dowei Electric Current Transformer LZZW-12-9

36kV Current Transformer (Outdoor type)General Description: • IEC 61869, ANSI/IEEE C57.13, NEMA • ISO 9001, KEMA, CESI, CE, TUV, UL, ASTA • Seismic design, ETGI-1.020, IEEE Std 693, NCh2369 • Structural design, ASTM A325, ANSI/AISC 360, AWS D1.1 • High altitude correction per IEC 61869 & IEEE C57, ~ 5000m • High Quality Epoxy Resin Insulation, Low partial discharge, High accuracy • Special accuracy classes PR, PX, PXR, TPX, TPY, TPZ or C 100-800 (IEEE), etc.. 36kV Epoxy Resin Current Transformer (Outdoor type) NINGBO DOWEI ELECTRIC CO., LTD. 608, Lingyun Building No.1, High-tech Zone, Ningbo,...

Open the catalog to page 9

Dowei Electric Current Transformer LZZW-12

Dowei Electric Current Transformer LZZW-12

Catalog excerpts

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