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ResourcesPower system single-line symbols (IEC 60617)

Relay, transformer differential (87T) symbol (DWG block)

Relay, transformer differential (87T) is a ready-to-use AutoCAD block named PWR_R_87T in the Power system single-line symbols (IEC 60617), group “Protection relays”. It carries 10 attributes, 2 of them visible, so it works in equipment lists and BlockSync exports.

Relay, transformer differential (87T) symbol, block PWR_R_87T
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Block details

Block namePWR_R_87T
LibraryPower system single-line symbols (IEC 60617)
GroupProtection relays
StandardIEC 60617
Attributes10 attributes, 2 visible

Attributes

Visible on the drawing: TAG, FUNCTION.

Hidden, they carry the data for schedules: SETTING, TRIPS, CT_INPUT, VT_INPUT, MANUFACTURER, MODEL, REMARKS, DESC.

Export the attributes of every copy in a drawing to Excel with BlockSync, check them and write the corrections back in one run.

How to use it

  1. Download the ZIP and unzip it. It holds one DWG with the block PWR_R_87T.
  2. Open the DWG and copy the block into your drawing, or insert it from the DWG with INSERT.
  3. Double-click a copy to fill in the tag and the other attributes.

The symbol is our own drawing after the common form of IEC 60617, not a certified copy. The library page explains how the symbols relate to the standard.

Names in other languages

The same symbol under its name in the other site languages.

English
Relay, transformer differential (87T)
Simplified Chinese
变压器差动继电器（87T）
Traditional Chinese
電驛，變壓器差動(87T)
Japanese
変圧器差動継電器(87T)
Korean
계전기, 변압기 차동(87T)
German
Relais, Transformatordifferential (87T)
French
Relais différentiel de transformateur (87T)
Italian
Relè differenziale di trasformatore (87T)
Spanish
Relé diferencial de transformador (87T)

More symbols in the group “Protection relays”