Connecting DC Power to the 61000 and 41000 Chassis

Connect the DC PEMs in the Chassis to an external battery power source.

You must have a mains DC power supply system that includes batteries and a branch circuit breaker of 125A for each DC PEM.

The DC PEM is described in DC Power Entry Modules (PEMs) for the 61000 and 41000 Chassis.

Required Tools and Parts:

  • 4 DC wire leads for each DC PEM that connect to the DC power supply.

    Use 6AWG wires. There is no standard for DC wire color coding. Use the color codes on the DC power source (battery) for the DC wire leads.

  • 4 barrel lugs (Panduit LCD6-10A-L) for each DC PEM to connect the wire leads to the DC PEM terminal blocks.

  • Crimping tool to connect the wire leads to the lugs.

  • Wire cutter.

  • Wire stripper.

  • Hexagonal-head socket wrench, or nut driver for tightening nuts to terminal studs on each DC PEM.

  • Screwdriver.

Wires and Lugs are not supplied by Check Point

To connect DC power:

Note - These instructions assume that you already installed the DC PEMs in the Chassis.

Step

Instructions

1

Set the branch circuit breakers at the mains to the "OFF" position.

2

On the both DC PEMs, set all the circuit breakers to the "OFF" position.

3

On the first DC PEM, remove the protective plastic cover.

Use an appropriate screwdriver.

4

Where the PEM is marked -48/-60 VDC and Return, remove the nuts from the terminal studs.

Use a socket wrench or nut driver.

5

Connect the -48/-60 VDC cables to the battery:

  1. Use the crimping tool to connect two wire leads to two lugs.

  2. Attach the two wire lugs to the -48/-60 VDC terminal studs on the DC PEM.

    Use the socket wrench or nut driver.

  3. Connect the other ends of the two wires to the -48/-60VDC terminal on the DC battery.

6

Connect the Return cables to the battery:

  1. Use the crimping tool to connect two 6 AWG wire leads to two lugs.

  2. Attach the two wired lugs to the Return terminal studs on the PEM.

    Use the socket wrench or nut driver.

  3. Connect the other ends of the two wires to the Return terminal on the DC battery.

7

Use a multimeter to make sure the polarity and the range of the DC voltage are correct.

Use a multimeter to measure the resistance between the disconnected DC PEM wire leads and the Battery's Return terminal.

For all the DC PEM wire leads, one at a time:

  1. At the battery, disconnect a DC PEM wire lead from the battery.

  2. Connect one multimeter probe to the battery's Return and the other probe to the DC PEM wire lead.

    • A very large resistance (indicating an open circuit) shows that the wire lead connects to the-48/-60VDC terminal on the DC PEM.

    • A very low resistance (indicating a closed circuit) shows that the wire lead connects to the Return terminal on the DC PEM.

  3. Reconnect the DC PEM wire lead to the battery.

8

At the DC PEM:

  1. Attach the protective plastic cover.

  2. Set all the circuit breakers to the "ON" position.

9

Repeat Steps 3 - 8 for the second DC PEM.

10

Set the branch circuit breakers at the mains to the "ON" position.