Hitachi Relion 670 Series Applications Manual page 143
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Also See for Relion 670 Series:
- Applications manual (354 pages) ,
- Commissioning manual (284 pages) ,
- Product manual (192 pages)
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1MRK506375-UEN Rev. N
7.4
Underimpedance protection for railway transformers
ZGTPDIS
7.4.1
Function revision history
Document
revision
A
B
C
D
E
F
G
H
M
N
7.4.2
Identification
Function description
Underimpedance protection for railway
transformers
7.4.3
Application
ZGTPDIS is generally used as backup protection for faults on the transformer and the associated
transmission lines. These transformers can be classified in two basic categories:
•
2-phase to 2-phase Interconnecting transformers
•
2-phase to 1-phase Interconnecting transformers
Railway application RER670
Application manual
Product
History
revision
2.2.1
-
2.2.1
-
2.2.2
-
2.2.3
Addition of one more instance into transformer protection package and setting range
extension for IMin to meet homologation, IEC 61850 LN mapping modification for Str and
Op data objects.
2.2.3
-
2.2.4
-
2.2.4
-
2.2.5
-
2.2.6
-
2.2.6
-
IEC 61850
identification
ZGTPDIS
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IEC 60617
ANSI/
identification
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Section 7
Impedance protection
137
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