WIRING DIAGRAMS
3/11
Notes XT7-XT7M A) Auxiliary power supply must be present for zone selectivity and local bus functions (consult Fig. 31-32). B) When there are mixed auxiliary contacts, 01 and 02 are 400V, while 03-04 are 24V. C) Always supplied with Ekip Com module. D) Always supplied with motor for loading closing springs in Fig. 13. E) A voltage transformer is mandatory in the case of external sockets. External sockets are man- datory for systems for over 690V rated voltage. Admissible maximum rated secondary voltage is 230V. F) Connections between RC residual current pro- tection sensor and poles of connector X (or XV) of the circuit-breaker must be made of 4-pole shielded cable with paired braided conductors (BELDEN 9696 paired type or equivalent) no more than 10 m in length. G) Earth fault protection (Gext) by means of a cur- rent sensor on the neutral point of the MV/LV transformer is available with all electronic pro- tection releases equipped with display inter- face with LSIG protections. The connection be- tween terminals 1 and 2 of the UI/O current transformer and Ge+ and Ge- poles of connec- tor X (or XV) must be made of shielded and stranded 2-pole cable (BELDEN 8841 or equiva- lent) no more than 15 m in length. H) Use the supplied cable to make the connection. There must be no break in the cable. Use of other cables or extensions using intermediate terminal boxes is not allowed. With a circuit- breaker, poles Ne+ and Ne- of connector X (or XV) are short-circuited unless the external neu- tral is present: enable short-circuit if connec- tion is absent. I) Mandatory if any Ekip module is present. L) Up to two applications between Fig. 41...59 taken only once can be supplied. The Ekip Com module selected can be duplicated by choosing between Fig. 61...67.
SZo(DFo) = Zone selectivity output for S protection or output in "forward" direction for D protection Tl/L1-L2-L3 = Current transformer phase L1-L2-L3 Tl/N = Current transformer on neutral TU1-2 = Insulation voltage transformer (outside circuit-breaker) Uaux = Auxiliary supply voltage Ul/L1-L2-L3 = Current sensor phase L1-L2-L3 Ul/N = Current sensor on neutral Ul/O = SingIe-pole current sensor W2 = Serial interface with internal bus (local bus) W9...14 = RJ45 connector for communication modules W9R...12R= RJ45 connector for redundant communication modules X = Delivery connector for auxiliary circuits of withdrawable circuit-breaker XB1...7 = Connectors for circuit-breaker applications XF = Delivery terminal box for position contacts of withdrawable circuit- breaker XK1...3 = Connectors for auxiliary circuits of EKIP protection release XK7 = Connector for auxiliary circuits of communication modules XV = Delivery terminal board for auxiliary circuits of fixed circuit-breaker YC = Closing coil YO = Opening coil YO1 = Opening coil for overcurrent YO2 = Second opening coil YR = Coil for electrical resetting of trip contact S51 YU = Undervoltage coil
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