Siemens 7SG23 MSCDN – MP2A Manual page 66

Contents
1 Introduction ........................................................................................................................................................ 3
2 Safety ................................................................................................................................................................. 3
3 Sequence Of Tests............................................................................................................................................. 3
4 Test Equipment Required................................................................................................................................... 3
5 Insulation Resistance Test ................................................................................................................................. 4
6 Power Supply ..................................................................................................................................................... 4
7 Programming The Relay .................................................................................................................................... 5
7.1 Setting by laptop ...................................................................................................................................... 5
7.2 Setting via relay fascia ............................................................................................................................. 5
8 Secondary Injection Tests .................................................................................................................................. 5
8.1 Accuracy of Measurement ....................................................................................................................... 6
8.2 Checking the thermal characteristic ......................................................................................................... 6
8.3 Checking the open circuit protection ........................................................................................................ 7
9 Primary Injection Tests....................................................................................................................................... 8
10 Tripping And Intertripping Tests ......................................................................................................................... 8
11 Putting Into Service ............................................................................................................................................ 8
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MSCDN - MP2A Commissioning
Chapter 7 Page 2 of 9