Contactors and Contactor Assemblies

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Regina Conley
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1 SIRIUS Contactors and Contactor Assemblies Application WYE-delta starting can only be used either if the motor normally operates in a d (delta) connection or starts softly or if the load torque during * starting is low and does not increase sharply. On the *step the motors can carry approximately 50% (class KL ) or 30 % (class KL 10) of their rated torque; the starting torque is approximately 1 / 3 of that during direct on-line starting. The starting current is approximately 2 to 2.7 times the rated motor current. The changeover from * to d must not be effected until the motor has run up to rated speed. Drives which require this changeover to be performed earlier are unsuitable for WYEdelta starting. The ratings given in the above table are only applicable to motors with a starting current ratio of I A 8. I N and using either a 3RT19-2G or 3RT G solid-state time-delay auxiliary switch block with a WYE-delta function or a 3RP157 WYEdelta time-delay relay with a dead interval of approximately 50 ms on reversing. For the circuit diagrams for the main and control circuits, see page 2/1. The size selected for the installation kits for WYEdelta starting is determined by the line contactor. Design Components for customer assembly Installation kits with wiring connectors and, if necessary, mechanical connectors are available for contactor assemblies. Contactors, overload relays, star-delta time-delay relays and auxiliary switches for the electrical interlock if required also feeder terminals, mechanical interlocks 1 ) and baseplates must be ordered separately. The wiring installation kits for sizes S00 and S0 contain the top and bottom main conducting path connections between the line and delta contactors (top) and between the delta and WYE contactors (bottom). In the case of sizes S2 to S12 only the bottom main conducting path connection between the delta and WYE contactors is included in the wiring connector, owing to the larger conductor cross-section at the infeed. Motor protection Overload relays or thermistor motor protection tripping units can be used for overload protection. The overload relay can be either mounted onto the line contactor or separately fitted. It must be set to 0.58 times the rated motor current. Surge suppression Sizes S00 to S3 All contactor assemblies can be fitted with RC elements, varistors or diode assemblies for damping opening surges in the coil. As with the individual contactors, the surge suppressors can either be plugged onto the top of the contactors (S00) or fitted onto the coil terminals on the top or bottom (S0 to S3). Sizes S6 to S12 The contactors are fitted with varistors as standard. 1) Exception: The mechanical interlock between the delta and WYE contactors is included in the installation kit for size S00 contactor assemblies. 2/73

2 Contactors and Contactor Assemblies SIRIUS Overview The contactor assemblies for star-delta starting can be ordered as follows: Sizes S00 to S12 As components for customer assembly. Calculated horsepower ratings at 60 V AC Operat. current I e HP A Motor current A Size Line/delta contactor Accessories for customer assembly WYE contactor Time-delay relay Installation kit A double infeed S00-S00-S00 3RT RT RT19-2G RT RP15 7-1N S0-S0-S0 3RT10 2 3RT10 2 3RP15 7-1N RT S2-S2-S0 3RT10 3 3RT RP15 7-1N.30 3RA C 3 ) RT S2-S2-S2 3RT10 3 3RA B 3 ) RT S3-S3-S2 3RT10 3RT RP15 7-1N.30 3RA19 3-2C 3 ) RT10 5 3RT S6-S6-S3 3RT10 5 3RT10 3RP15 7-1N RT RT RT RT S10-S10-S6 3RT10 6 3RT10 5 3RP15 7-1N RT RT S12-S12-S10 3RT RT10 6 3RP15 7-1N RT RT RT /7 1) The installation kit contains mechanical interlock; 3 connecting clips; wiring connectors on the top (connection between line contactor and delta contactor) and the bottom (connection between delta contactor and star contactor); WYE jumper. 2) The installation kit contains 5 connecting clips; wiring connectors on the top (connection between line contactor and delta contactor) and the bottom (connection between delta contactor and WYE contactor); star jumper.

3 SIRIUS Contactors and Contactor Assemblies Overload relay, thermal Overload relay, solid-state Installation kit B for single infeed WYE jumper Baseplates Range of overload relay, thermal [A] Order No. overload relay, thermal Range of overload relay, solid-state [A] Order No. overload relay, solid-state 3RA B 1 ) 3RT19 -BA RU11-1AB RB10-1NB RU11-1BB RB10-1PB RU11-1CB RU11-1DB RU11-1EB RB10-1SB RU11-1FB RU11-1GB RU11-1HB RU11-1JB0 3RA B 2 ) 3RT19 26-BA RU CB RB PB RU DB RU EB RU FB RU GB RB SB RU HB RU JB RU KB RB QB RU11 26-AB RU11 26-BB RU11 26-CB RU11 26-DB0 3RA D ) 3RT19 26-BA31 3RA E RU HB RU JB RB QB RU KB RU11 36-AB RU11 36-BB RU11 36-DB RU11 36-EB RB UB RU11 36-FB0 3RT19 36-BA31 3RA F RU11 36-GB RU11 36-HB0 3RA19 3-3D ) 3RT19 36-BA31 3RA19 2-2E RU11 6-DB RB10 6-1UB RU11 6-EB RU11 6-FB RU11 6-HB RU11 6-JB RB10 6-1EB RU11 6-KB RU11 6-LB0 3RA D 5 ) 3RT19 6-BA31 3RA E RB FG0 3RA A 6 ) 3RT19 56-BA31 3RA E RB GG0 3RA A 6 ) 3RT19 66-BA31 3RA E RB KG0 3) Installation kit contains wiring connector on the bottom (connection between delta contactor and WYE contactor) and WYE jumper. ) Wiring connector on top from reversing contactor assembly (note conductor cross-sections). 5) A mechanical interlock adapter, 3RA195-2C, is required to use the standard 3RA195-2A mechanical interlock for the AC version of the S6-S6-S3 WYE-Delta starter. The S6-S6-S3 WYE-Delta DC version would require a special custom build spacer, which is not manufactured, to allow the mechanical interlock to operate. 6) Only use wiring connector on the top from reversing contactor assembly (note conductor cross-sections); order WYE jumper in addition. 2/75

Contactors and Contactor Assemblies SIRIUS Size S00-S00-S00 up to 17 A, 10 HP 1 17 Auxiliary switch block, mountable on the front 3RH19 11-1... 2/35 Surge suppressor 3RT19-1.

4 Contactors and Contactor Assemblies SIRIUS Size S00-S00-S00 up to 17 A, 10 HP 1 17 Auxiliary switch block, mountable on the front 3RH /35 Surge suppressor 3RT /1, 2/2 3-phase feeder terminal 3RA K 2/50 K1 1 ) K3 2 ) K2 2 ) 12 A, 7.5 HP 3RT RT RT /8 17 A, 10 HP 3RT RT RT /8 7 Solid-state time-delay auxiliary switch block, mountable on the front 3RT19-2G.51 2/39 9 Auxiliary switch block with one unassigned NO contact 3RH BA10 2/ Installation kit 3RA B 2/50 The installation kit contains: 5 6 Mechanical interlock 3 connecting clips Wiring connectors on the top and bottom For overview, see page 2/ ) Use design with 1 NO. 2) Use design with 1 NC. 2/76

SIRIUS Contactors and Contactor Assemblies Size S0-S0-S0 up to 0 A, 25 HP 7 12 15 17 18 19 Mechanical interlock, laterally mountable 3RA19 2-2B 2/7 Solid-state time-delay auxiliary switch block,

5 SIRIUS Contactors and Contactor Assemblies Size S0-S0-S0 up to 0 A, 25 HP Mechanical interlock, laterally mountable 3RA19 2-2B 2/7 Solid-state time-delay auxiliary switch block, mountable on the front 3RT1926-2G... 2/39 Mechanical interlock, mountable on the front 3RA19 2-1A 2/37 Auxiliary switch block, laterally mountable 3RH EA.. 2/37 Surge suppressor 3RT /1 3-phase feeder terminal 3RV A 1/10 3-phase busbar 3RT19 26-CC20 2/50 Push-in lug 2 ) for time-delay relay for screw mounting 3RP19 03 Section 9 K1 K3 K2 25 A, 15 HP 3RT10 2 3RT10 2 3RT10 2 2/8 30/0 A, 20/25 HP 3RT RT RT10 2 2/8 8 Time-delay relay, laterally mountable 3RP15 7-1N.30 Sec. 9 9 Auxiliary switch block with one unassigned NO contact 3RH CA10 2/36 10 Auxiliary switch block for local control 2 units 3RH CA01 3 units 3RH CA10 2/ Installation kit 3RA B 2/50 The installation kit contains: 5 6 Connecting clips Wiring connectors on the top and bottom for connecting the main conducting paths For overview, see page 2/ ) Not included in scope of supply of complete contactor assemblies; available as accessory. 2) Possible in principle. If a solid-state time-delay auxiliary switch block is mounted onto the front of K3, an ordinary auxiliary switch block can only be mounted onto the side. 2/77

Contactors and Contactor Assemblies SIRIUS Size S2-S2-S0 up to 65 A, 30 HP 7 15 17 18 19 Mechanical interlock, laterally mountable, depth must be adapted K3: 1.

6 Contactors and Contactor Assemblies SIRIUS Size S2-S2-S0 up to 65 A, 30 HP Mechanical interlock, laterally mountable, depth must be adapted K3: 1.5 mm; K2: 0 mm 3RA19 2-2B 2/7 Solid-state time-delay auxiliary switch block, mountable on the front 3RT G... 2/39 Auxiliary switch block, laterally mountable 3RH EA.. 2/37 Surge suppressor 3RT /1 3RT /2 3-phase feeder terminal 3RV A 1/10 3-phase busbar 3RV A 1/10 Push-in lug 2 ) for time-delay relay for screw mounting 3RP19 03 Section 9 K1 K3 K2 50/60 A, 30 HP 3RT10 3 3RT10 3 3RT /8 8 Time-delay relay, laterally mountable 3RP15 7-1N.30 Sec. 9 9 Auxiliary switch block with one unassigned NO contact 3RH CA10 2/36 10 Auxiliary switch block for local control 2 units 3RH CA01 3 units 3RH CA10 2/36 11 Baseplate 3RA E 2/50 6 Installation kit 3RA C 2/50 The installation kit contains the WYE jumper on the top and the wiring jumper on the bottom for connecting the main conducting paths. For overview, see page 2/ ) Not included in scope of supply of complete contactor assemblies; available as accessory. 2) Possible in principle. If a solid-state time-delay auxiliary switch block is mounted onto the front of K3, an ordinary auxiliary switch block can only be mounted onto the side. 2/78

SIRIUS Contactors and Contactor Assemblies Size S2-S2-S2 up to 86 A, 60 HP 7 12 15 17 18 19 Mechanical interlock, lateral3ra19 2-2B 2/7 Solid-state time-delay auxiliary switch block, mountable on the

7 SIRIUS Contactors and Contactor Assemblies Size S2-S2-S2 up to 86 A, 60 HP Mechanical interlock, lateral3ra19 2-2B 2/7 Solid-state time-delay auxiliary switch block, mountable on the front 3RT G... 2/39 Mechanical interlock, mountable on the front 3RA19 2-1A 2/39 Auxiliary switch block, lateral 3RH EA.. 2/37 Surge suppressor 3RT /1 3RT /2 3-phase feeder terminal 3RV A 1/10 3-phase busbar 3RV A 1/10 Push-in lug 2 ) for time-delay relay for screw mounting 3RP19 03 Section 9 K1 K3 K2 80 A, 50 HP 3RT RT RT10 3 2/8 86 A, 60 HP 3RT RT RT10 3 2/8 8 Time-delay relay, lateral 3RP15 7-1N.30 Sec. 9 9 Auxiliary switch block with one unassigned NO contact 3RH CA10 2/36 10 Auxiliary switch block for local control 2 units 3RH CA01 3 units 3RH CA10 2/36 11 Baseplate 3RA F 2/50 6 Installation kit 3RA B 2/50 The installation kit contains the WYE jumper on top and the wiring jumper on bottom for connecting the main conducting paths. For overview, see page 2/ ) Not included in scope of supply of complete contactor assemblies; available as accessory. 2) Possible in principle. If a solid-state time-delay auxiliary switch block is mounted onto the front of K3, a standard auxiliary switch block can only be mounted onto the side. 2/79

Contactors and Contactor Assemblies SIRIUS Size S3-S3-S2 up to 150 A, 100 HP 7 15 19 Mechanical interlock, lateral, depth must be adapted K3: 0 mm; K2: 27.

8 Contactors and Contactor Assemblies SIRIUS Size S3-S3-S2 up to 150 A, 100 HP Mechanical interlock, lateral, depth must be adapted K3: 0 mm; K2: 27.5 mm 3RA19 2-2B 2/7 Solid-state time-delay auxilary switch block, mountable on the front 3RT G... 2/39 Auxiliary switch block, lateral3rh EA.. 2/37 Surge suppressor 3RT /2 Push-in lug 2 ) for time-delay relay for screw mounting 3RP19 03 Section 9 For overview, see page 2/73-7. K1 K3 K2 115 A, 75 HP 3RT10 3RT10 3RT / A, 100 HP 3RT10 5 3RT10 5 3RT /8 Time-delay relay, lateral 3RP15 7-1N.30 Sec. 9 Auxiliary switch block with one unassigned NO contact 3RH CA10 2/36 Auxiliary switch block for local control 2 units 3RH CA01 3 units 3RH CA10 2/36 Baseplate 3RA19 2-2E 2/50 Installation kit 3RA19 3-2C 2/50 The installation kit contains the WYE jumper on the top and the wiring jumper on the bottom for connecting the main conducting 1) Not included in scope of supply of the complete contactor assemblies; available as an accessory. 2) Possible in principle.if a solid-state time-delay auxiliary switch block is mounted onto the front of K3, a standard auxiliary switch block can only be mounted onto the side. 2/80

3RA13, 3RA14 Contactor Assemblies

3RA13, 3RA14 Contactor Assemblies RA1, RA Contactor Assemblies RA1 complete units,... kw Overview The RA1 reversing contactor assemblies can be ordered as follows: Sizes S00 to S Fully wired and tested, with mechanical and electrical interlock