SACE ® TMAX XT ® UL/CSA LOW VOLTAGE MOLDED CASE CIRCUIT-BREAKERS UL489 AND CSA C22.2 STANDARDS
3/4
— Reading information Information on how to read the diagrams
State of operation shown The diagrams are shown in the following conditions: • fixed version circuit-breaker, open; • withdrawable or plug-in version circuit-breaker, open and connected; • contactor for starting the motor open;
K51/CI
= Motor starting contactor operator module
K51/COM = Communication module K51/MEAS= Measurement module K51/SIGN= Signaling module K51/SUPPLY = Auxiliary supply module
• circuits de-energised; • trip units not tripped; • motor operator with springs charged.
(110-24OVAC/DC and 24-48VDC)
K51/SYNC= Synchronizing module K51/TEMP= Temperature monitoring module K87 = Residual current relay M = Motor with energizing in series for circuit-breaker opening and closing (Fig. 21)
Key XT1...XT4 *
= See note indicated by the letter = Ekip Com type interface unit = Ekip Signaling 10K type signaling unit = MOE-E type stored energy motor operator actuating unit = Ekip Multimeter type measurement unit = Ekip Micro Module l/O type interface unit = MOE type stored energy motor operator actuating unit = Serial interface with external bus = Redundant serial interface with external bus
A12 A13 A14
M
= Motor for opening circuit-breaker and loading the closing springs (Fig. 22-54- 55-56-57)
A15 A16
M1 = Three-phase asynchronous motor 0 11...32 = Programmable signaling contacts OCI = Contact for motor starting contactor operating mechanism 0 SC = Synchronism monitoring contact Q = Main circuit-breaker Q/O...7 = Auxiliary contacts of the circuit-breaker open/closed R-R1 = Resistor R2 = Pt100 temperature sensor of motor 81 = Contact controlled by the motor operator cam 82 = Contact controlled by the key lock of the direct action motor operator 83/1-2 = Contacts operated by Auto/Manual selector switch and by key lock of the stored energy motor operator
A17
BUS1 BUS2
LINK BUS = Interface with external Link bus D 2 Electronic time-delay device for
undervoltage release coil YU, outside cir- cuit-breaker (only for voltage up to 250 V) = Signaling lamp for stored energy motor operator blocked
H2
I 11...32 = Programmable digital inputs | 41...43 51...53 = Analog inputs from temperature sensor | 44-54 = Analog inputs from 4-20mA sensor | Pt1OO = Analog input from PtiOO temperature sensor of motor I reset = Digital input for resetting tripped mo tor starting contactor operating unit
S4
= Contact operated by direct action motor operator cam = Early auxiliary contacts operated by circuit-breaker mounted crank handle = Contact for signaling circuit-breaker open due to tripped thermomagnetic overcurrent protection release or electronic relay = Contacts controlled by Auto/Manual selector switch of direct action motor operator
S4/1-2
851
J...
= Connectors for auxiliary circuits of withdrawable circuit-breaker. Withdrawal of connectors occurs at the same time as that of circuit-breaker
86/1-2
K
= Motor starting contactor = Ekip type electronic relay for overcurrent protection
K51
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