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Alstom SHPM 101 - Basic Relay Characteristics

Alstom SHPM 101
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SERVICE MANUAL R5888B
QUADRAMHO Chapter 1
Appendix A
Page 1 of 8
TWO SHPM TYPES
Both have 18 measuring elements + PSB
Z3
Z2
Z1
Gr Gr
Ph Ph
PSB PSB
Z3
Z2
Z1
Z3
Z2
Z1
Z3
Z1
Z2
Z1
Z2
Z3
Type a:– Mho Type b:– Quadrilateral
Figure 1: Basic relay characteristics

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