Section 2: Equipment Operating Conditions; Current Transformer Circuits; External Resistors; Front Cover - Siemens 7SR12 Argus Manual

Section 2: Equipment Operating Conditions

2.1

Current Transformer Circuits

The secondary circuit of a live CT must not be open circuited. Non-observance of this precaution can
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result in injury to personnel or damage to equipment.
2.2

External Resistors

Where external resistors are connected to the relay circuitry, these may present a danger of electric shock
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or burns, if touched.
2.3

Front Cover

The front cover provides additional securing of the relay element within the case. The relay cover should
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be in place during normal operating conditions.
©2017 Siemens Protection Devices Limited
7SR11 & 7SR12 Installation Guide
Chapter 5 Page 7 of 32