Siemens 7SA511 manual Acceptance Tests

7SA511 Line Protection RelayAcceptance Tests

Acceptance Tests

Table of Contents
3. Acceptance Tests	3-3
3.1 Test Equipment	3-4
3.2 Energizing the Relay	3-5
3.2.1 Reading the Initial Display	3-5
3.2.2 Verifying the Language Setting	3-6
3.3 Relay Settings for Acceptance Tests	3-7
3.4 Power Supply Test	3-8
3.5 Metering Tests	3-10
3.6 Binary Input Test	3-12
3.7 LED Test	3-13
3.8 Signal and Trip Relay Test	3-15
3.9 Testing the Fault Detection Systems	3-16
3.9.1 Overcurrent Fault Detection Test	3-16
3.9.2 Voltage-Controlled Overcurrent Fault Detection Test (Optional)	3-17
3.9.3 Impedance Fault Detection Test (optional)	3-19
3.10 Testing the Distance Zones	3-21
3.10.1 Independent Zones Z1, Z2, and Z3	3-23
3.10.2 Overreach Zones Z1B and Z1L	3-23
3.10.3 Coordination Times	3-24
3.11 Testing the Power Swing Blocking Function (Optional)	3-24
3.12 Signal Transmission Test	3-25
3.12.1 Permissive Underreach Transfer Trip (PUTT)	3-25
3.12.2 Permissive Overreach Transfer Trip (POTT)	3-26
3.13 Emergency Overcurrent Protection Test	3-27
3.13.1 Initial Setup	3-28
3.13.2 High-Set Overcurrent	3-28
3.13.3 Definite Time Overcurrent Protection	3-29
3.13.4 Overcurrent Test Procedure	3-29
3.14 Isolated Ground Fault Detection Test (Optional)	3-30
3.15 High-Resistance Ground Fault Protection Tests (Optional)	3-30
3.15.1 Testing the Directional, Definite Time Ground Fault Protection	3-30
3.15.2 Testing the Nondirectional Inverse Time Ground Fault Protection	3-32
3.16 Testing the Automatic Reclose (AR) Function (Optional)	3-32
3.17 End of Acceptance Testing	3-33
List of Figures
Figure 3-1. Voltage-Controlled Overcurrent Fault Detector Characteristic	3-18
Figure 3-2.Polygonal Impedance Fault Detection Characteristic	3-20
Figure 3-3.Distance Zone Characteristics	3-22

July 27, 1995 3-1