ABB REG316 4 Series - Accessories and Spares; Appendices

ABB Switzerland Ltd REG 316*4 1MRB520049-Uen / Rev. B
4-22
4.2.3.8. Accessories and spares
When ordering accessories or spares, state the type and serial
number of the unit for which they are intended. If a number of
identical units is installed in a plant, keeping a spare unit on
stock is recommended.
Spare material must be stored in a clean dry room at moderate
temperatures. Testing spare units in conjunction with the routine
testing of units in operation is recommended.
4.2.3.9. Appendices
Fig. 4.8 Wiring diagram of the REG 316 and the ancillary
unit Type YWX111-11/-21
Fig. 4.9 Wiring diagram for a two-stage protection scheme
Fig. 4.10 Internal operation and terminals of the YWX111-
11/-21
Fig. 4.11 Component side of the PCB in the YWX111-11/-21