Siemens SIPROTEC 7SD80 User Manual

Appendix
A.4 Current Transformer Requirements
SIPROTEC, 7SD80, Manual
E50417-G1140-C474-A1, Release date 09.2011
350
Class Accuracy
Table A-2 Minimum required class accuracy depending on the neutral point grounding and the operation
of the function
An angle correction may have to be parameterized at the device for particularly small ground fault currents (see
Description of the „sensitive ground fault detection“).
Neutral point Isolated Resonant-grounded system
Function directional Class 1 Class 1

Siemens SIPROTEC 7SD80 Specifications

General

Brand	Siemens
Model	SIPROTEC 7SD80
Category	Protection Device
Language	English