SSG4112E

Titel

Direct-current systems for relay protection, control and indication. Operation and maintenance

Orientering

Supersedes earlier edition by SSG 4112E.
This standard provides advice and guidelines on the operation and maintenance of directcurrent systems used to supply power to control, indication and relay protection systems. The standard is a complement to SSG 4111E - Design guidelines.
d.c. systems based on chemical batteries are installed to provide an uninterrupted supply of power to the most important items of equipment in a plant. For this reason, the system is expected to offer high operational reliability and availability while providing the rated energy capacity.

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