Transformer Terminal,
RET 545

The RET 545 Transformer Terminal is designed for the protection, control, measurement and supervision of two-winding power transformers and power generator-transformer blocks in distribution networks.
The terminals are loaded with functionality to suit your application. Besides the three-phase stabilized current differential function featuring 2nd and 5th harmonic restraint, the Basic version terminals incorporate three-phase overcurrent, non-directional earth-fault, restricted earth-fault, transformer thermal overload and phase unbalance protection.

The Multi version terminals further include overvoltage and undervoltage supervision, directional earth-fault, residual voltage and overexcitation protection, overfrequency and underfrequency protection, and underimpedance protection. Enhanced with an optional automatic voltage regulator function the terminal forms an integrated transformer management unit.

A special Control version terminal with just voltage regulator and control functions is also available.

Related links

Documentation and downloads

Application description
Calculation of the Current Transformer Accuracy Limit Factor, Application note English
0.68 MB
Current Transformer Requirements for Non-Directional Overcurrent Protection, Application note English
2.49 MB
RET 54_, Automatic voltage regulator function block COLTC, Application note and setting guideEnglish
2.67 MB
RET 54_/Diff6T function, Differential Protection, Application and setting guideEnglish
2.41 MB
Stabilizing Resistor in Motor Earth-Fault Protection, Application noteEnglish
2.27 MB
Brochure
RET 541/543/545, Transformer TerminalEnglish
1.81 MB
Certificate
KESCO Certificate KAS-KESCO-7018-02 for DA ProductsEnglish
0.22 MB
Connection diagram
RET 541/543/545 Terminal diagram, all pages, packaged in ZIP-formatEnglish
1.17 MB
RET 541/543/545 Terminal DiagramsEnglish
0.65 MB
Terminal Diagram RET 54_English
0.37 MB
Terminal Diagram RET 54_English
0.31 MB
Terminal Diagram RET 54_English
0.38 MB
Terminal Diagram RET 54_English
0.30 MB
Terminal Diagram RET 54_English
0.39 MB
Terminal Diagram RET 54_English
0.31 MB
Terminal Diagram RET 54_English
0.40 MB
Terminal Diagram RET 54_English
0.35 MB
Terminal Diagram RET 54_English
0.39 MB
Terminal Diagram RET 54_English
0.43 MB
Terminal Diagram RET 54_English
0.30 MB
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