Typical Connection: 7Sr22 Directional Oc/Ef And Nvd - Siemens Argus 7SR21 Technical Manual

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7SR21 & 7SR22 - Installation Guide
7.2

Typical Connection: 7SR22 Directional OC/EF and NVD

Figure 7.2-1 7SR22
Applied to Transformer Incomer Including HV NVD Protection
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