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3M 4990, Инструкция по эксплуатации, Страница: 2 / 12

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Contents:

1.0

General ............................................................................................................................................... 1

2.0

Accessories ......................................................................................................................................... 4

3.0

Protector Specifications ...................................................................................................................... 5

4.0

Tool Requirements ............................................................................................................................. 5

5.0

Terminal Locations ............................................................................................................................. 5

6.0

Terminal Grounding ........................................................................................................................... 6

7.0

Entrance Cable Preparation and Termination .................................................................................... 6

8.0

Distribution Cable Termination .......................................................................................................... 9

9.0

Protector Installation .......................................................................................................................... 10

10.0

Multiple Terminal Installation ............................................................................................................ 11

Содержание 4990

Страница 1: ...1 July 2000 78 8124 8790 4 A 4990 Outdoor Protected Entrance Terminals Underwriters Laboratories UL Listed Instructions ...

Страница 2: ...tector Specifications 5 4 0 Tool Requirements 5 5 0 Terminal Locations 5 6 0 Terminal Grounding 6 7 0 Entrance Cable Preparation and Termination 6 8 0 Distribution Cable Termination 9 9 0 Protector Installation 10 10 0 Multiple Terminal Installation 11 ...

Страница 3: ... Entrance Terminals PETs provide for the protection and termination of entrance and distribution cables The terminals are available in 25 50 100 and 300 pair sizes and are Underwriter Laboratories UL Listed 4990 50 4990 25 4990 100 4990 300 ...

Страница 4: ...9 4990 50 15 4 17 5 7 9 4990 100 24 9 17 5 7 9 4990 300 35 7 27 6 7 9 2 0 Accessories 2 1 4990 SK Skirt The 4990 SK skirt is used with the 25 50 and 100 pair terminals when physical protection of incoming cable is preferred or when a separate splice location below the terminal is desired 2 2 4788 SKW Skirt The 4788 SKW skirt is used with the 300 pair terminal when physical protection of incoming c...

Страница 5: ...ponents Note If a 4990 SK 4788 SKW 4990 WB or 4788 WBW is to be installed these items should be installed first and then proceed to section 6 0 5 2 Open the terminal door using a 7 16 terminal wrench Remove the door by lifting upward Stow the door in a safe place until installation is completed 5 3 Remove the parts bag Locate the hanger bracket Open the bag and remove two of the 12 screws for atta...

Страница 6: ...ion arrestors useless 7 0 Entrance Cable Preparation and Termination 7 1 Cable Entrance Preparation Extend the entrance cable at least 30 762 mm past the cable entry port and mark the cable jacket Remove excess cable 7 2 Slide the 3M Pull n Shrink Tubing PST over the cable sheath with the pull tab facing away from the terminal If installing a 25 or 50 pair cable slide both PST tubes on sliding the...

Страница 7: ...requiring two PST s place a double half lapped layer of 88T vinyl tape starting at the gland fingers to a point approximately six inches down the sheath Slide the smaller PST up towards the gland as far as it will go and holding it firmly against the gland remove the core completely 7 13 Slide the PST over the gland assembly and butt it up against the terminal Slowly unwind the loose core tail by ...

Страница 8: ...mponent s of the connector is included with the terminal c Using tie wraps secure the cable groups to the slotted bracket on the left hand side of the splice chamber while maximizing slack and maintaining good housekeeping d Splice the cable groups to the corresponding pre connectorized stubs in the terminal per company practice 7 17 Cable Termination When splicing with discrete connectors such as...

Страница 9: ...t the stop As the cap rotates the wire is simultaneously connected and trimmed off Note Make sure the screwdriver blade is fully inserted into the cap before rotating 1 2 3 4 13 19mm unconnected position connected position 90 2 51mm slack loop e Always route the distribution wire below the connected cap and across the pairs through the wire guides f Record the location of the distribution pairs on...

Страница 10: ... with a cover over the protector field loosen the captive screw s and open the cover b Fully insert the appropriate UL Recognized or Listed protection device into the protector receptacle field Refer to section 3 0 Important All protectors must be fully inserted during testing Standard protector jack field pin configurations are used with the central grounding pin serving to polarize the module A ...

Страница 11: ...remove the selected knockouts for the feeder and distribution pairs including the ground wire knockout in the top of existing housing Note If wire work is to pass between the terminals make sure all appropriate knockouts are removed and install the plastic edging provided to eliminate chafing of the wire insulation b Place a 4990 CLR stacking collar on the top of the first terminal Make sure that ...

Страница 12: ...is product will be free from defects in material and manufacture as of the date of purchase 3M MAKES NO OTHER WARRANTIES INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE If this product is defective within the warranty period stated above your exclusive remedy shall be at 3M s option to replace or repair the 3M product or refund the purchase ...

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