Connect the Power Supply to the DC Source Voltage (–48 V)

To connect the DC power input cables on the Model 10933 or 10934A power supplies to a –4 source, follow these steps:

Verify that the DC circuit is de-energized.
Attach an ESD-preventive wrist strap to your bare wrist and connect the metal end to an appropriate ground point on the rack.
Slide the cover off the terminal block.
Connect the DC power input cables.
1. On each terminal, loosen the screw enough to allow the spade terminal to slide underneath the captive square washer.
2. Slide the spade terminal of the negative wire (–48 V) under the captive square washer on the negative terminal (labeled –48V).
3. Slide the spade terminal of the positive wire (–48 V RTN) under the captive square washer on the positive terminal (labeled RTN).
  
  The following figure shows the correct positioning for both wires.
  
  Connecting the DC Power Cables (Part 1)
4. Tighten both screws on the terminal block to 11 pound-inches (1.25 Newton-meters).
Slide the cover into place over the terminal block, as shown in the following figure.

Connecting the DC Power Cables (Part 2)
Connect the cables to the DC source voltage, using hardware appropriate to the installation site and following local and national electrical codes.
Energize the DC circuit.

Leave the ESD strap permanently connected to the rack, so that the strap is always available when you need to handle ESD-sensitive components.

Published April 28, 2016prev | next