GE L30 User Manual

GE Multilin L30 Line Current Differential System 9-11
9 APPLICATION OF SETTINGS 9.4 INSTANTANEOUS ELEMENTS
9
Figure 9–4: MAXIMUM ERROR FOR 60 HZ SYSTEM
Not all instantaneous elements have to be blocked during the re-synchronization process. For example, the impedance ele-
ment maximum error is 8.86% at 60 Hz. With a typical margin of 15 percent, this is still well below impedance reach point.
Another example is Phase IOC; typically, these elements have very sufficient margin for the overload conditions and are set
high enough above these conditions. But voltage-based elements can be set quite close to the system nominal voltage or
operating voltage and can require attention.

GE L30 Specifications

General

Brand	GE
Model	L30
Category	Relays
Language	English