Positron Teleline Isolator 751109/13 Description And Installation
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Positron Teleline Isolator 751109/13 Description And Installation

Positron Teleline Isolator 751109/13 Description And Installation

Eight-card shelf
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Eight-card Shelf, 751109/13
Description and Installation

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Summary of Contents for Positron Teleline Isolator 751109/13

  • Page 1 Eight-card Shelf, 751109/13 Description and Installation...
  • Page 2 The information contained in this document is the property of Positron Inc. Except as specifically authorized in writing by Positron Inc., the holder of this document: 1) shall keep all information contained herein confidential and shall protect same in whole or in part from the disclosure and dissemination to all third parties, and 2) shall use same for operating and maintenance purposes only.

  • Page 3: Table Of Contents

    Contents The Eight-card Shelf ............. . 1 Physical Specifications .

  • Page 5: The Eight-Card Shelf

    751109/13 (40 pages) Eight-card Shelf The Eight-card Shelf The Eight-card Shelf, model 751109/13, is used indoors to accommodate eight service cards. The shelf is molded from specially treated polyurethane, making it a lightweight, flame retardant product of high dielectric strength. Its polyurethane body limits the possibility of many kinds of infiltration while providing reliable isolation from external ground potentials.
  • Page 6 751109/13 Eight-card Shelf Figure 1 Model 751109/13 FRONT VIEW SIDE VIEW STATION SIDE 9.71" 30.2" DANGER 13.5" POSITRON INC. FiberLine Isolator INTERIOR VIEW STATION SIDE ISOLATION GAP MOUNTING SLOTS CO SIDE...

  • Page 7: Physical Specifications

    751109/13 Eight-card Shelf Physical Specifications For a listing of the module’s physical specifications, refer to Table 1. Table 1 Physical Specifications Parameter Specifications Height 13.5” (34.29 cm) Width 30.2” (76.71 cm) Depth 9.71” (24.66 cm) Weight 22.0 lbs (9.95 kg)

  • Page 8: Cable Options

    751109/13 Eight-card Shelf Cable Options The Eight-card Shelf is equipped with CO and station color coded cable stubs. • 10’ CO and station color coded cable stubs are provided with the Eight-card Shelf. For a listing of pin-outs for the CO and the Station side cables color coding, refer to Table 2.
  • Page 9 751109/13 Eight-card Shelf Table 2 Pin-Out for CO Cable and Station Cable with Color Coding, 751109/13 CO Cable Station Cable with with Color Coding Color Coding Shelf Connector 25-Pair Connector 25-Pair Label Description Slot Position Cable Position Cable TIP 1 TB1-17 White TB1-18...
  • Page 10 751109/13 Eight-card Shelf CO Cable Station Cable with with Color Coding Color Coding Shelf Connector 25-Pair Connector 25-Pair Label Description Slot Position Cable Position Cable TIP 7 (2nd pair) TB1-8 Black TB1-9 Black/Slate RING 7 (2nd pair) TB2-8 Slate TB2-9 Slate/Black TIP 8 (2nd pair) TB1-9...

  • Page 11: Shelf Mounting

    751109/13 Eight-card Shelf Shelf Mounting The Eight-card Shelf should be installed as closely as possible to the point of entry of the CO cable. Power will need to be routed to the shelf (24 V, -48 V, 130 V dc or 120 V ac). A Non-Fragmenting Lightning Arrestor Unit (model 751123 or 751126) is also highly recommended.
  • Page 12 751109/13 Eight-card Shelf Check the contents of your Eight-card Shelf kit. For a listing of the items included in the kit, refer to Table 3. Table 3 Model 751109/13 Kit Contents Part No. Found Model Items Included on Item 751109/13 Eight-card Shelf 244-040007-401 Description and Installation document...
  • Page 13 751109/13 Eight-card Shelf To mount the shelf, install the plywood backboard on the wall to provide the installation with additional isolation from station ground. Then attach the drilling template to the plywood surface where the shelf will be located. As indicated on the template, drill three holes for the #14 screws supplied. Remove the template and install the screws.

  • Page 14: Cable Connections

    For an illustration, refer to Figure 2. Figure 2 CO and Station Cable Separation STATION SIDE DANGER POSITRON INC. FiberLine Isolator GROUND CO SIDE WIRE POWER CABLE...

  • Page 15: Station Side Cable Connection

    751109/13 Eight-card Shelf Station Side Cable Connection Feed the free end of the cable through the upper hole on the upper right-hand side of the shelf, from the inside to the outside. Slide the free end of the station cable through the nut of one of the 1/2” strain reliefs provided.
  • Page 16 751109/13 Eight-card Shelf Figure 3 Station Side Terminal Blocks STATION SIDE (INSTALLED VIEW) MALE CONNECTORS ON STATION CABLE RING -48V RU GEN -24V MARKINGS FEMALE RECEPTACLES ON STATION SIDE MOTHERBOARD...
  • Page 17 751109/13 Eight-card Shelf Figure 4 Station Side Motherboard Interconnection Diagram -24V RING -48V 2 B 3 C 4 D 5 F 7 H 8 18 3 17 4 16 5 15 6 14 7 13 8 12 9 10 1 BATT.

  • Page 18: Co Side Pic Connection

    751109/13 Eight-card Shelf CO Side PIC Connection If you wish to connect the incoming CO cable directly to the shelf without using the PIC stub, refer to Section 5.3 on page 1-18. To connect the CO side cable using the PIC stub Slide the nut of the 3/4”...
  • Page 19 751109/13 Eight-card Shelf Connections between the PIC stub and the incoming CO cable can now be made according to the color coding of the station cable. For a listing of the standard color codes, refer to Table 2. For a view of CO side motherboard interconnections, refer to Figure 6. The PIC stub must be spliced to the incoming CO cable using a high-dielectric splice case.
  • Page 20 751109/13 Eight-card Shelf Figure 5 CO Side Terminal Blocks FEMALE RECEPTACLES CO SIDE MALE CONNECTORS (INSTALLED VIEW) GND RA RC RD RF RG RING PCB MARKINGS GND TA...
  • Page 21 751109/13 Eight-card Shelf Figure 6 CO Side Motherboard Interconnection Diagram RING 14 13 16 15...

  • Page 22: Co Side Cable Connection Without The Pic Stub

    751109/13 Eight-card Shelf CO Side Cable Connection Without the PIC Stub Caution A potential difference may develop between the station and CO cables during a ground fault, and it is therefore essential that the cable employed have adequate insulating properties. The following instructions assume that the cable being employed fits the 3/4”...
  • Page 23 751109/13 Eight-card Shelf Plug the male connectors into female receptacles TB1 and TB2, located in the bottom left-hand corner of the shelf. For a diagram of the CO side terminal blocks, refer to Figure 5. Secure the cable by holding the nut inside the shelf and tightening the grip by turning the gland nut.

  • Page 24: Power Connections

    751109/13 Eight-card Shelf Power Connections The power for the shelf may be connected using either an external power supply or an internal power supply. These two different options are described below. External Power Supply When connecting power to the shelf using an external power supply, there are two methods, as listed below.
  • Page 25 751109/13 Eight-card Shelf Table 4 Shelf Powering Via Station Side Cable: Model 751109/13 Station Cable with Color Coding 751109/13 Connector Label Description 25-Pair Cable Position Ground TB1-2 Yellow/Green Ground TB1-2 Green/Yellow RU GEN Ring-up Gen TB1-1 Violet/Brown RU GEN Ring-up Gen TB1-1 Brown/Violet -24V...
  • Page 26 751109/13 Eight-card Shelf To power the shelf via the power cable The shelf may be powered via a cable which is fed through the lower hole on the Station side. This will provide a DC supply. For an illustration of this type of external powering, refer to Figure 7.
  • Page 27 751109/13 Eight-card Shelf Figure 7 External Power Supply EXTERNAL POWER SUPPLY VIA STATION CABLE EXTERNAL POWER SUPPLY VIA RING POWER CABLE -48V -24V RU GEN 1...

  • Page 28: Internal Power Supply

    751109/13 Eight-card Shelf Internal Power Supply When an internal Power Supply Card, model 751313 is used, then either 120 V ac or 130 V dc must be supplied to the shelf via the power cable provided. The Power Supply Card itself operates from either AC or DC. For the correct positioning of the ground strap, refer to Section 6, “Ground Connections”.
  • Page 29 751109/13 Eight-card Shelf Table 6 Power Cable Connections for 120 V ac Description Connector Position Wire Color Live TB3-1 Black Ground TB3-2 Green Neutral TB3-3 White Table 7 Power Cable Connections for 130 V dc or 48 V dc Description Connector Position Wire Color 130 V dc or -48 V dc...
  • Page 30 751109/13 Eight-card Shelf Figure 8 Power Cable Connection STATION SIDE RING POWER CABLE FUSE LED DANGER: DO NOT ALLOW CABLE TO SAG INTO THE ISOLATION GAP Secure the power cable by holding the nut inside the shelf and tightening the grip by turning the gland nut. Attention Female receptacle TB3 is intended exclusively for the internal power supply option.

  • Page 31: Ground Connections

    POWER CABLE ENTRY POSITRON The LED indicates the presence of -24 V dc in the shelf, regardless if it is from an external or an internal power supply. The 2-amp, replaceable fast-blow fuse protects the internal power supply (if installed) from excessive currents or...
  • Page 32 751109/13 Eight-card Shelf If a Power Supply Card, model 751313 is used and is powered from an AC source, the ground strap J14 on the Station side motherboard must be in its “connected” position if the station ground lug is not used. Otherwise, the ground strap must be in the “disconnected”...

  • Page 33: Temperature Considerations

    751109/13 Eight-card Shelf Temperature Considerations The Eight-card Shelf enclosure is made of an insulating material, which under normal operating conditions (i.e., shelf closed) results in a higher temperature internally than externally (room temperature). Therefore, special care must be taken to ensure that the internal temperature never exceeds the operating temperature of each card.
  • Page 34 751109/13 Eight-card Shelf Operating Power Power Model No. Temperature Consumption Dissipation Range 751316 25% of output power -20° to 65° C 751317 70 mA avg at -24 V 1 W at (-24 V) -20° to 65° C 70 mA avg at -24 V 1.8 W at (-48 V) -20°...
  • Page 35 751109/13 Eight-card Shelf To calculate the temperature inside the shelf Complete the following worksheet. Table 9 Temperature Calculation Worksheet Max. Slot Power Power Model Operating Consumption Dissipation Temperature Internal 25% of Total power Power consumption= Supply Total power Total power Highest allowable consumption = dissipation =...
  • Page 36 751109/13 Eight-card Shelf The temperature inside the shelf is calculated using the following equation. Temperature inside the shelf = (Total Pwr Dissipation ¥ Shelf Thermal Resistance) + Room Temperature Shelf Thermal Resistance = 0.31° C/W Compare the “Calculated temperature inside the shelf” with the “Highest Allowable Temperature”.
  • Page 37 751109/13 Eight-card Shelf Table 10 Temperature Calculation Example Max. Slot Power Power Model Operating Consumption Dissipation Temperature. 751339 65° C 751339 65° C 7501-06A 65° C 7501-06A 65° C 7501-15B 5.5W 50° C 7501-16B 8.4W 8.5W 50° C 751321 4.8W 1W (-24v) 65°...

  • Page 38: Card Insertion

    751109/13 Eight-card Shelf Card Insertion After all thermal considerations have been taken into account, insert the cards into the shelf and close and secure the cover with the nuts supplied. To close the cover properly, you must first secure the bottom of the cover before joining the holes with their respective screws.

  • Page 39: Service And Support

    Arrangements and pricing information regarding field assistance may be obtained by contacting the Technical Customer Support department. Please contact Positron for scheduling at least four weeks prior to the actual requested visit date. Customer Training Positron offers full customer training courses, as requested.
  • Page 40 Positron Inc. offers repair services by which customers can count on timely and quality repairs, regardless of customer location. All warranty repairs are performed at no cost. Positron reserves the right to repair or replace any equipment which has been found to be defective.
  • Page 41 Eight-card Shelf Ordering Information Positron’s Teleline equipment can be ordered by telephone, facsimile, or by mail. All orders should be directed to the Positron Inside Sales department. Ordering by telephone, or facsimile will eliminate any delays arising from postal services.

  • Page 42: Appendix

    751109/13 Eight-card Shelf Appendix This sheet should be detached and photocopied since it must be filled-in when first installing the shelf, and for every reconfiguration thereafter. Attach the completed sheet to the shelf for future reference. Table 12 Eight-card Shelf Temperature Calculation Worksheet Max.

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