BS EN IEC 61869-15:2019
$167.15
Instrument transformers – Additional requirements for voltage transformers for DC applications
| Published By | Publication Date | Number of Pages |
| BSI | 2019 | 42 |
IEC 61869-15:2018 provides all requirements specific to voltage transformers to be used in DC applications (DCVTs), whatever the technology used. The output signal can be analogue or digital. It is applicable to newly manufactured voltage transformers used for measuring, protection and/or control applications in DC power systems with a rated voltage above 1,5 kV. This document covers passive voltage dividers as well as active voltage transformers, used for measurement, control and protection. The general configuration of a single-pole low-power instrument transformer is described in Figure 601 of IEC 61869-6:2016. IEC 61869-15:2018 applies to voltage transformers (VT) intended to be used in DC applications with the following functions: • measure DC voltage (with significant harmonics); • withstand DC voltage. Two main technologies of DC converters exist today: LCC and VSC • Line-commutated converters (LCC) are based on thyristor converters. They are characterized by a single direction of current flow, and a voltage polarity reversal possibility. Significant voltage and current harmonics exist up to frequencies of about 3 kHz to 4 kHz. • Voltage source converters (VSC) are based on transistor converters. They are characterized by a bi-directional current flow and a single voltage polarity. Voltage and current harmonics exist up to frequencies of about 20 kHz.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | National foreword |
| 5 | Annex ZA(normative)Normative references to international publicationswith their corresponding European publications |
| 7 | English CONTENTS |
| 8 | FOREWORD |
| 11 | INTRODUCTION Figures Figure 1501 – Position of the DCVT’s in the DC scheme Tables Table 1501 – Voltage on DCVT’s |
| 13 | 1 Scope 2 Normative references 3 Terms, definitions, abbreviated terms and symbols |
| 15 | Figure 1502 – Typical step responses of a system |
| 18 | Table 3 – Partial discharge test voltages and permissible levels |
| 19 | Figure 1503 – Accuracy limits of a DCVT Table 1502 – Limits of ratio error for DCVT (classes from 0,1 to 3) |
| 21 | Table 7 – Static withstand test loads |
| 22 | Table 8 – Arc fault duration and performance criteria |
| 23 | Table 1503 – Markings of terminals |
| 24 | Table 1504 – Rating plate marking for common rating plate Table 1505 – Rating plate marking for each secondary converter |
| 25 | Table 1506 – Rating plate marking for auxiliary power supply |
| 26 | Table 10 – List of tests |
| 30 | Figure 1504 – RC divider with low-voltage part outside the main housing |
| 31 | Figure 1505 – Connection for voltage withstand test of the external low voltage part of a DCVT |
| 32 | Figure 1506 – Polarity reversal test profile |
| 34 | Figure 1507– Measurement of the step response time |
| 39 | Annex 15A(informative)Proposed rated insulation level applicable to voltage transformers for DC application Table 15A.1 – Proposed rated primary terminal insulation levels for voltage transformers for DC application |
| 40 | Bibliography |
