EasyManuals Logo

GE D30 User Manual

GE D30
686 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Page #441 background imageLoading...
Page #441 background image
CHAPTER 5: SETTINGS GROUPED ELEMENTS
D30 LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL 5-231
5
PHASE DIR 1 EVENTS — This setting enables and disables the logging of phase directional overcurrent events in the
sequence of events recorder.
Figure 5-128: Phase directional logic
5.7.8 Neutral current
5.7.8.1 Menu
SETTINGS  GROUPED ELEMENTS SETTING GROUP 1(6)  NEUTRAL CURRENT
The phase directional element responds to the forward load current. In the case of a following reverse fault, the
element needs some time—in the order of 8 ms—to establish a blocking signal. Some protection elements, such as
instantaneous overcurrent, respond to reverse faults before the blocking signal is established. Therefore, a
coordination time of at least 10 ms must be added to all the instantaneous protection elements under the
supervision of the phase directional element. If current reversal is of concern, a longer delay—in the order of 20
ms—is needed.
NEUTRAL CURRENT
NEUTRAL TOC 1
See below
NEUTRAL TOC 2
NEUTRAL IOC 1
See page 5-233
NEUTRAL IOC 2

Table of Contents

Questions and Answers:

Question and Answer IconNeed help?

Do you have a question about the GE D30 and is the answer not in the manual?

GE D30 Specifications

General IconGeneral
BrandGE
ModelD30
CategoryRelays
LanguageEnglish

Related product manuals