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Siemens 7SG12 DAD-N - Page 68

Siemens 7SG12 DAD-N
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7SG12 DAD N Applications Guide
Stabilising
Resistors
Relay
Elements
NLR
All CTs should be the same Ratio
and ideally have the same
kneepoint voltage
Figure 15 – High Impedance Protection of Auto-transformer
©2010 Siemens Protection Devices Limited Chapter 5 Page 14 of 16

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