3M Indoor Building Entrance Terminal (IBET) 4790V and 4790VL Series with 3M Quick Connect System (QCS) 2811 Dry Flame-Retardant Block and RJ-11 Test Ports Instructions Underwriters Laboratories (UL 348X) Listed May 2012 3 78-0013-6389-0-A
1.0 General The 3M Indoor Building Entrance Terminals (IBET) 4790V-QCS and 4790VL-QCS Series provides electrical protection and a termination point for outside plant cable (feeder) and indoor house wiring (distribution). The 4790V and 4790VL IBETs provide a demarcation point between the switched telephone network and the thirdparty customer-premises equipment via an RJ-11 jack. These IBETs are Underwriters Laboratories (UL 348X) Listed. 1.1 Available 4790V-QCS /4790VL-QCS IBETs: 4790V/50-25/SD-A IBET 4790V/50-50/SD-A IBET 4790VL/100-100/SD-A IBET 4790V/50-25/DPM-FR-A IBET 4790V/50-50/DPM-FR-A IBET 4790VL/100-100/DPM-FR-A IBET 25-pair HiCat Indoor Building Entrance Terminal with 3M 710 Splicing System SD 50-pair HiCat Indoor Building Entrance Terminal with 3M 710 splicing system SD 25-pair HiCat Indoor Building Entrance Terminal with 3M 710 Splicing System SD 25-pair HiCat Indoor Building Entrance Terminal with 3M MS 2 Super Mini Splicing Module 4005-DPM/FR 50-pair HiCat Indoor Building Entrance Terminal with 3M MS 2 Super Mini Splicing Module 4005-DPM/FR 100-pair HiCat Indoor Building Entrance Terminal with 3M MS 2 Super Mini Splicing Module 4005-DPM/FR 1.2 IBET Terminal Parts and Components a) Connectorized tails with 3M flame-retardant modules. 3M MS² Super Mini Splicing Module 4000-D/CO, 3M MS² Fire Retardant Pluggable Module 4005-DPM/FR or 3M 710 Splicing System SD modules. b) Splice chamber (for the feeder cable) with cable strain relief. c) Insulated #6 ground strap for the feeder cable. d) External bottom-mounted, three-point ground bar and top-mounted, single-point ground bar. e) Numbered standard 5-pin protector receptacle field. f) Binding post log and instruction label. g) The 3M Single Pair Test Probe and Dish. h) Fully lockable protective cover. i) Three (3) screws (2 small and 1 large) to wall mount the IBET (Note diagram in section 2.0). 1.3 IBET Dimensions and Wiring Schematic Model Height Width Depth 4790V-QCS/50-25 4790V-QCS/50-50 4790VL- QCS/100-100 12.25" (311 mm) 12.25" (311 mm) 19.62" (498 mm) 21.04" (534 mm) 4.83" (123 mm) 6.80" (172 mm) 26 AWG Fuse Wire Module Protector RJ-11 2810 Block From C.O. 3M Indoor Building Entrance Terminal (IBET) 4790V-QCS and 4790VL-QCS Wiring Schematic 1.4 Protector Specifications Use ONLY UL Recognized or Listed five-pin protectors in the 4790V-QCS terminal. 1.5 Special Tools Needed to Splice 3M MS 2 modules or 3M 710 connectors (Not required if 3M Scotchlok Connectors are used) 2 78-0013-6389-0-A
2.0 3M Indoor Building Entrance Terminal Location and Mounting 2.1 Choose a location for the terminal according to your company s standard operating procedures. Consider the following points: a) Locate the terminal inside the building as close as possible to cable entrance. CAUTION Avoid locations near flammable materials, ignitable gases, dust, moisture, temperature extremes, moving machinery, electric light and power circuits, and electrical equipment. b) Locate the terminal on a firm mounting surface where it will be accessible to the technicians at all times; where it can be reached without a ladder; and where it will not project in a hazardous manner. c) Observe caution when exposing the terminal to chemicals in liquid or vapor form as they may damage the plastic components. 2.2 Open the splicing chamber by loosening the bolt securing the splicing chamber door. Open the splicing chamber door. 2.3 Pull the preterminated short stub, insulated ground wire, and accessories out of the splicing chamber. 2.4 Mount the terminal in designated position with the three mounting screws provided. Model 4790V-QCS/50-25 4790V-QCS/50-50 4790VL-QCS/100-100 Dimension A 9.0" (229 mm) 9.0" (229 mm) A Back of terminal: wall mounting keyholes 2.5 Remove the jumper wire retaining ring from poly bag and install in faceplate. 78-0013-6389-0-A 3
3.0 Feeder Cable Preparation and Strain Relief 3.1 Feeder cable diameters for the 3M Indoor Building Entrance Terminal (IBET) 4790V-QCS and 4790VL-QCS Series Minimum Diameter Maximum Diameter Entrance Cable 0.42" (10.7 mm) 1.45" (36.8 mm) If the cable diameter is smaller than the minimum, use Scotch Linerless Rubber Splicing Tape 130C to build up to the minimum. 3.2 Run the feeder cable 24" (610 mm) past the 3M Indoor Building Entrance Terminal (IBET) cable entry port. 3.3 Slide the 3M Pull N Shrink Tube (PST) on the end of the cable with the pull-tab away from the IBET and temporarily keep it out of the way. 3.4 With the groove toward the IBET and long end toward the cable, snap the cable gland halves around the cable. Slide the gland into the entry port of the IBET. 3.5 Measure 2" (51 mm) of sheath past the gland inside the IBET. Pull the gland and cable out of the IBET. 2" 3.6 Remove the sheath, leaving at least 21" (533 mm) of free conductor length. Identify and secure the cable groups ends. Bond the cable shield according to your company s practice. 3.7 Insert the gland s groove into the cable port. Slide the PST over the gland and slowly unwind the core. The PST core fits over the small diameter of the 25- to 50-pair gland. 3.8 Complete the PST core removal over the gland. 3.9 The blank plate MUST be used in the empty cable port for UL Listing. 3.10 Attach the cable to the wall according to your company s practice. 4 78-0013-6389-0-A
4.0 Terminal Grounding 4.1 Fasten a #6 AWG wire to the ground bar, which is located on the front of the unit. Connect the other end of the ground wire to local ground per company standards. Note: Failure to properly bond and ground the terminal per N.E.C. or local equivalent codes may render protection arrestors useless. 5.0 Splicing 5.1 Splice the feeder cable group(s) to the appropriate 3M Terminal Block Tail(s) per your company s practice. 5.2 Bundle completed 3M Splice Module(s) and secure them with 3M Cable Ties within the splice chamber. 5.3 Close the splice chamber cover and secure the lock plate bolt. 6.0 Terminating Premise Wire 3M Quick Connect System (QCS) 2811 Block 6.1 Open the feeder pair jumper cap by pushing up on the latch and rotating up. Insert wire ends A (tip) left and B (ring) right into wire openings in the cap, making sure they are inserted all the way to the back of the cap. 6.2 While holding the wires in place, close the cap and press to snap the latch firmly into place. 6.3 Route the wires through wire loops on the block ends and through vertical and horizontal wireways. 6.4 Terminate additional wires by repeating the above procedure. 6.5 To remove the wires, open the cap and pull the wires straight out from block. 6.6 Route the wire below the connected cap. 78-0013-6389-0-A 5
7.0 RJ-11 Test Jack/Demarcation Jack Ports 7.1 The user accessible RJ-11 test jack or demarcation jack port on both the 3M Indoor Building Entrance Terminal 4790V and 4790VL provide a loop disconnection point for isolating the wiring fault without the need to remove a jumper wire, customer premise wire or visit the customer premise. 7.2 To isolate the cable circuit, insert an RJ-11 jack into the corresponding RJ-11 test access port. Test Ports on the 3M Indoor Building Entrance Terminal 7.3 Inserting an RJ-11 jack into the test access port connects to the CO side of the loop while at the same disconnecting the 3M Quick Connect System (QCS) 2810 and customer premise cable. 7.4 This test access port does not provide for connection of the premise cable for testing purposes. 7.5 Testing of the customer premise cable can be accomplished by the inserting the 3M Single Pair Test Probe 2827 in the corresponding cable pair cap on the 3M Quick Connect System Block 2811 and attaching test equipment to the test pair lugs. 7.6 The cable pair circuit will remain disconnected until the test jack is removed from the test access port. To restore the circuit, remove the test jack. 3M Indoor Building Entrance Terminal 4790V-QCS 50-pair 6 78-0013-6389-0-A
8.0 Installing the Electrical Protectors Note: Use ONLY UL Recognized or Listed protectors in the IBET terminal. 8.1 The 3M Indoor Building Entrance Terminal (IBET) 4790V-QCS and 4790VL-QCS uses a standard five pin protector receptacle field. The long pins of the protector connect Tip and Ring from the feeder cable though the protector to the short pins to the distribution/house wire. 8.2 Insert protectors into the protector receptacle field according to your company s practice. 8.3 To disconnect the distribution wire, pull the protector out to the detents on the long pins to hold it in place. This continues to protect from the feeder cable side. 9.0 Protective Cover 9.1 With the cover closed, the exposed hasp allows for locking when security is required. 10.0 3M Single Pair Test Probe 2827 10.1 Plug the test probe into the cap of the pair being tested, with the black lead to the left and the red lead to the right. 78-0013-6389-0-A 7
11.0 3M Priority Caps 11.1 Priority caps are used to designate special purpose circuits and prevent entry of the 3M Single Pair Test Probe. 11.2 To install priority caps, place over the jumper cap of the pair to be marked and push it into place. Latching is indicated by an audible snap. 12.0 Multiple 3M Indoor Building Entrance Terminal (IBET) 4790V-QCS and 4790VL-QCS Installation Note: Use this application when the required cable pair capacity exceeds the capacity of a single IBET. 12.1 The design of the splice chamber and the grooved cable glands make it possible to stack the IBET vertically, up to three of the same cable pair count and within the diameter limits in the chart in 3.1. 21" (533 mm) 12.2 Mounting the IBET a) Mount the IBET bodies using the cable glands to position them. b) Assemble the feeder cable strain relief according to Section 3.0 and prepare the feeder cable so that 21" (533 mm) of free conductor length will be in the last IBET. 1" (25 mm) minimum 2.75" (70 mm) minimum 8 78-0013-6389-0-A
12.3 Place cable glands around the free conductors and position into the 3M Indoor Building Entrance Terminal (IBET). 12.4 Separate the feeder cable pair assigned to each IBET; splice and bond the IBET according to section 4.0. 843017 78-0013-6389-0-A 9
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