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AC2, AC3 & AC4 contactors

Created by: Chetan2490 at: 5/23/2014 7:43 AM (10 Replies)

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5/23/2014 7:43 AM
Chetan2490 Advanced Member Joined: 5/12/2014 Last visit: 9/9/2020 Posts: 149 Rating: (16)	Hello Experts, Can you explain in brief about AC2, AC3 & AC4 contactors??

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5/23/2014 8:15 AM	Rate (0)
Ste39 Platinum Member Joined: 1/21/2013 Last visit: 10/23/2024 Posts: 4620 Rating: (708)	Hello, Go to page 2,3,4...: http://support.automationdirect.com/docs/iec_contactors.pdf
	Last edited by: Ste39 at: 5/23/2014 8:17 AM
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5/23/2014 8:58 AM	Rate (1)
Madhava Silver Member Joined: 11/26/2011 Last visit: 6/29/2023 Posts: 508 Rating: (23)	1)AC1– Non-inductive or slightly inductive rows 2) AC2– Starting of slip-ring motors 3) AC3– Starting of squirrel-cage motors and switching off only after the motor is up to speed. (Make Locked Rotor Amps (LRA), Break Full Load Amps (FLA)) 4) AC4– Starting of squirrel-cage motors with inching and plugging duty. Rapid Start/Stop. (Make and Break LRA) 5) AC11– Auxiliary (control) circuits

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5/23/2014 1:38 PM
Chetan2490 Advanced Member Joined: 5/12/2014 Last visit: 9/9/2020 Posts: 149 Rating: (16)	Madhava 1)AC1– Non-inductive or slightly inductive rows 2) AC2– Starting of slip-ring motors 3) AC3– Starting of squirrel-cage motors and switching off only after the motor is up to speed. (Make Locked Rotor Amps (LRA), Break Full Load Amps (FLA)) 4) AC4– Starting of squirrel-cage motors with inching and plugging duty. Rapid Start/Stop. (Make and Break LRA) 5) AC11– Auxiliary (control) circuits Dear, I wants to use contactors in crane application than which type of contactor is better to preffer??
	Last edited by: Chetan2490 at: 5/23/2014 1:39 PM
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5/23/2014 1:52 PM	Rate (0)
Madhava Silver Member Joined: 11/26/2011 Last visit: 6/29/2023 Posts: 508 Rating: (23)	Chetan2490 Madhava 1)AC1– Non-inductive or slightly inductive rows 2) AC2– Starting of slip-ring motors 3) AC3– Starting of squirrel-cage motors and switching off only after the motor is up to speed. (Make Locked Rotor Amps (LRA), Break Full Load Amps (FLA)) 4) AC4– Starting of squirrel-cage motors with inching and plugging duty. Rapid Start/Stop. (Make and Break LRA) 5) AC11– Auxiliary (control) circuits Dear, I wants to use contactors in crane application than which type of contactor is better to preffer?? Dear, In crane normally We use AC2 . Most of hoisting application uses slipring motor. In the attached brouchure you can find information about contactors used in crane application. (SIEMENS). Attachment sicop_datasheet.pdf (978 Downloads)

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5/23/2014 2:16 PM	Rate (0)
Madhava Silver Member Joined: 11/26/2011 Last visit: 6/29/2023 Posts: 508 Rating: (23)	Another attachment . Attachment sicop.pdf (821 Downloads)

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5/24/2014 7:14 AM	Rate (0)
Chetan2490 Advanced Member Joined: 5/12/2014 Last visit: 9/9/2020 Posts: 149 Rating: (16)	Madhava Chetan2490 Madhava 1)AC1– Non-inductive or slightly inductive rows 2) AC2– Starting of slip-ring motors 3) AC3– Starting of squirrel-cage motors and switching off only after the motor is up to speed. (Make Locked Rotor Amps (LRA), Break Full Load Amps (FLA)) 4) AC4– Starting of squirrel-cage motors with inching and plugging duty. Rapid Start/Stop. (Make and Break LRA) 5) AC11– Auxiliary (control) circuits Dear, I wants to use contactors in crane application than which type of contactor is better to preffer?? Dear, In crane normally We use AC2 . Most of hoisting application uses slipring motor. In the attached brouchure you can find information about contactors used in crane application. (SIEMENS). Dear, Mechanism of these contactors are same????

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5/24/2014 7:31 AM
jeet2907 Posts: 235 Rating: (52)	Chetan2490 Hello Experts, Can you explain in brief about AC2, AC3 & AC4 contactors?? Dear Chetan2490 Please find the link for brief explanation of AC2, AC3 & AC4 contactors as per IEC standard hope thi will help you in fututre also
jeet2907 Posts: 235 Rating: (52)
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5/24/2014 8:04 AM
Chetan2490 Advanced Member Joined: 5/12/2014 Last visit: 9/9/2020 Posts: 149 Rating: (16)	Madhava Chetan2490 Madhava 1)AC1– Non-inductive or slightly inductive rows 2) AC2– Starting of slip-ring motors 3) AC3– Starting of squirrel-cage motors and switching off only after the motor is up to speed. (Make Locked Rotor Amps (LRA), Break Full Load Amps (FLA)) 4) AC4– Starting of squirrel-cage motors with inching and plugging duty. Rapid Start/Stop. (Make and Break LRA) 5) AC11– Auxiliary (control) circuits Dear, I wants to use contactors in crane application than which type of contactor is better to preffer?? Dear, In crane normally We use AC2 . Most of hoisting application uses slipring motor. In the attached brouchure you can find information about contactors used in crane application. (SIEMENS). Dear, Mechanism of these contactors are same????

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5/24/2014 8:43 AM
Ste39 Platinum Member Joined: 1/21/2013 Last visit: 10/23/2024 Posts: 4620 Rating: (708)	jeet2907 Chetan2490 Hello Experts, Can you explain in brief about AC2, AC3 & AC4 contactors?? link Same my link above thank you

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