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Publication year
Preview GB/T 20840.1-2026 30.7.2026
GB/T 20840.1-2026

Instrument transformers—Part 1General technical requirements
Execute Date: february 2027

Standard published on 30.7.2026

Selected format:
English, Chinese -
electronic design (pdf) (ON REQUEST)


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ON REQUEST


Out of stock
Preview GB/T 20840.10-2025 24.1.2025
GB/T 20840.10-2025

Instrument transformers—Part 10Additional requirements for low-power passive current transformers

Standard published on 24.1.2025

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electronic design (pdf) (910.80 USD)


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910.80 USD


in 6 working days
Preview GB/Z 20840.100-2023 28.12.2023
GB/Z 20840.100-2023

Instrument transformers—Part 100 Guidance for application of current transformers in power system protection

Standard published on 28.12.2023

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electronic design (pdf) (ON REQUEST)


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ON REQUEST


Out of stock
Preview GB/T 20840.102-2020 31.3.2020
GB/T 20840.102-2020

Instrument transformers—Part 102:Ferroresonance oscillationsin substations with inductive voltage transformers

Standard published on 31.3.2020

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electronic design (pdf) (1162.80 USD)


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1 162.80 USD


in 7 working days
Preview GB/T 20840.103-2020 31.3.2020
GB/T 20840.103-2020

Instrument transformers—Part 103:The use of instrument transformers for power quality measurement

Standard published on 31.3.2020

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electronic design (pdf) (1738.80 USD)


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1 738.80 USD


in 9 working days
Preview GB/T 20840.11-2025 28.2.2025
GB/T 20840.11-2025

Instrument transformers—Part 11Additional requirements for low-power passive voltage transformers

Standard published on 28.2.2025

Selected format:
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electronic design (pdf) (910.80 USD)


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910.80 USD


in 6 working days
Preview GB/T 20840.14-2022 12.10.2022
GB/T 20840.14-2022

Instrument transformers—Part 14:Additional requirements for current transformers for DC applications

Standard published on 12.10.2022

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electronic design (pdf) (1006.80 USD)


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1 006.80 USD


in 6 working days
Preview GB/T 20840.15-2022 12.10.2022
GB/T 20840.15-2022

Instrument transformers—Part15:Additional requirements for voltage transformers for DC applications

Standard published on 12.10.2022

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electronic design (pdf) (838.80 USD)


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838.80 USD


in 5 working days
Preview GB/T 20840.2-2014 3.9.2014
GB/T 20840.2-2014

Instrument transformers—Part 2:Additional requirements for current transformers

Standard published on 3.9.2014

Selected format:
English, Chinese -
electronic design (pdf) (ON REQUEST)


Show all technical information.
ON REQUEST


Out of stock
Preview GB/T 20840.3-2013 17.12.2013
GB/T 20840.3-2013

Instrument transformers—Part 3: Additional requirements for inductive voltage transformers

Standard published on 17.12.2013

Selected format:
English, Chinese -
electronic design (pdf) (ON REQUEST)


Show all technical information.
ON REQUEST


Out of stock

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