Section 1 Introduction; This Manual; Presumptions For Technical Data - ABB RES670 Technical Manual

1MRK 511 408-UUS A
Section 1
1.1
1.1.1
Phasor measurement unit RES670 2.2 ANSI
Technical manual
Introduction

This manual

The technical manual contains operation principle descriptions, and lists function
blocks, logic diagrams, input and output signals, setting parameters and technical data,
sorted per function. The manual can be used as a technical reference during the
engineering phase, installation and commissioning phase, and during normal service.

Presumptions for Technical Data

The technical data stated in this document are only valid under the following
circumstances:
1. Main current transformers with 1 A or 2 A secondary rating are wired to the IED 1
A rated CT inputs.
2. Main current transformer with 5 A secondary rating are wired to the IED 5 A rated
CT inputs.
3. CT and VT ratios in the IED are set in accordance with the associated main
instrument transformers. Note that for functions which measure an analogue signal
which do not have corresponding primary quantity the 1:1 ratio shall be set for the
used analogue inputs on the IED. Example of such functions are: HZPDIF,
ROTIPHIZ and STTIPHIZ.
4. Parameter IBase used by the tested function is set equal to the rated CT primary
current.
5. Parameter UBase used by the tested function is set equal to the rated primary
phase-to-phase voltage.
6. Parameter SBase used by the tested function is set equal to:
• √3 × IBase × UBase
7. The rated secondary quantities have the following values:
Section 1
Introduction
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