ABB SACE Emax E1.2 Operating Instructions For The Design Engineer page 180

174 | © 2017 ABB | 1SDH001330R0002 - ECN000058721 Rev. A
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The following is a key to the symbols used in the wiring diagrams:
Symbol Description
UI / L2 Current sensor phase L2
UI / L3 Current sensor phase L3
UI / N Current sensor on neutral
UI / O Toroid S.G.R.
W2 Serial interface with internal bus (Local Bus)
W9...W13 RJ45 connector for communication modules
W9R...W11R RJ45 connector for redundant communication modules
X Delivery connector for auxiliary circuits for withdrawable version of circuit-breaker
XB1...XB7 Connectors for circuit-breaker applications
Delivery terminal board for position contacts of withdrawable version of
XF
circuit-breaker
XK1...XK3 Connectors for auxiliary circuits of the Ekip protection trip unit
XK7 Connector for auxiliary circuits of communication modules
XV Delivery terminal board for auxiliary circuits of fixed version circuit-breaker
YC Closing coil
YC2 Second closing coil
(1)
YO Opening coil
YO1 Opening coil for overcurrent
YO2 Second opening coil
YR Coil for electrical resetting of trip contact S51
YU Undervoltage coil
(1)
Only for E2.2-E4.2-E6.2.
ABB | SACE Emax 2
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Accessories | 2 - Wiring diagrams