Read the applicable ABB installation instructions before work. Verify SPA-ZC 402 and the installed-system configuration.
1Record the complete SPA-ZC 402 ordering code so the protocol, Ethernet connector, SPA fibre and power option remain matched.
2Isolate both auxiliary power and the connected protection equipment before terminal or fibre work.
3Connect the protective-earth conductor to the dedicated casing screw before applying auxiliary power.
4Do not connect multiple separate SPA devices in one SPA loop; configure a larger rack as the single device defined by ABB.
5Keep optical fibres clean, correctly paired and within the planned installation route and bend radius.
6Back up the active CET project, device model, datasets, report controls and exported CID file before modification.
7Verify the selected IED connectivity package and adapter firmware combination before downloading a configuration.
8After installation, review the documented LED sequence and prove SPA, LAN and IEC 61850 communication under controlled conditions.