ABB RER670 - Underimpedance Protection for Railway Transformers ZGTPDIS; Identification; Application

Phase selection
GUID-4A41544D-90A7-4C24-B1F6-6B610B1B3839 v1
tI0: It is strongly recommended not to use residual overcurrent based phase
selection incase of solidly earthed systems. Hence, set this to 60.0s.
7.3 Underimpedance protection for railway transformers
ZGTPDIS
GUID-B8C0A72B-63F2-4DBD-B702-F749C3EBCCC2 v2
7.3.1
Identification
GUID-F416AE1B-7588-4D01-99E0-D3924699A481 v2
Function description IEC 61850
identification
IEC 60617
identification
ANSI/
IEEEidentification
Underimpedance protection for railway
transformers
ZGTPDIS
Z<
IEC15000305 V1 EN-US
21T
7.3.2 Application
GUID-54FF2835-A45F-4192-BDA8-D15A0C650BB8 v2
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
Section 7 1MRK 506 375-UEN A
Impedance protection
150 Railway application RER670 2.2 IEC
Application manual