Rockwell-automation 1503 IntelliVAC Contactor Control Module - Series Uživatelský manuál stáhnout pdf (Strana 48)

Appendix A

1503-UM052D-EN-P – June 2013

Typical Contactor Drop-out Time Settings

The contactor drop-out time settings shown in the following table are

typical minimum values used when the power fuses are provided as part of

a complete MV controller from Rockwell Automation. The

recommendations are based on Ferraz-Shawmut power fuses. Other fuse

types may require alternate drop-out time settings.

The IntelliVAC module DIP switches are set up to provide the minimum

drop-out times shown (refer to Chapter 4).

Table A.1 – Typical Contactor Drop-Out Time Settings

Fuse Rating Contactor Drop-out Time Setting (msec)

Voltage Designation 400A 800A

< 5000

12R

18R

19R

24R

100

32R

240

38R ⊇

48X

⊇

57X ⊇ 200

2 x 24R

⊇

100

2 x 32R

⊇

240 *

2 x 38R

⊇

2 x 48X

⊇

2 x 57X

⊇

⊇ Fuse not suitable for use with contactor.

Note: The drop-out time is chosen to be equal to or greater than

the intersection of the rated contactor interrupting current and

the fuse melt time curve (except where noted * ).

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Rockwell-automation 1503 IntelliVAC Contactor Control Module - Series Uživatelský manuál Strana 48