ELECTR I CAL DI AGR AMS
9/5
SR
= Pushbutton or contact for electrical resetting of S51trip contact
XV
= Delivery terminal box for auxiliary circuits of fixed version circuit- breaker
SZi(DFi)
= Input for zone selectivity for S and I protection or input in “direct” direc- tion for D protection = Output for zone selectivity for S and I protection or output in “direct” di- rection for D protection = Current transformer phase L1 = Current transformer phase L2 = Current transformer phase L3 = Current transformer on neutral = Insulation voltage transformer (out- side circuit-breaker)
YC
= Closing coil
YC2
= Second closing coil
YO
= Opening coil
SZo(DFo)
YO1 YO2
= Opening coil for overcurrent
= Second opening coil
YR
= Coil for electrical resetting of trip contact S51
TI/L1 TI/L2 TI/L3 TI/N
YU
= Undervoltage coil
TU1…TU2
Uaux UI/L1 UI/L2 UI/L3 UI/N UI/O
= Auxiliary supply voltage = Current sensor phase L1 = Current sensor phase L2 = Current sensor on phase L3 = Current sensor on neutral = Single-pole current sensor
W2
= Serial interface with internal bus (lo- cal bus) = RJ45 connector for communication modules
W9…W13
W9R.W11R = RJ45 connector for redundant communication modules X
= Delivery connector for auxiliary cir- cuits for withdrawable version of cir- cuit-breaker = Connectors for circuit-breaker applications
XB1...XB7
XF = Delivery terminal board for position contacts of withdrawable version of circuit-breaker XK1…XK3 = Connectors for auxiliary circuits of the EKIP protection trip unit XK7 = Connector for auxiliary circuits of communication module
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