Power Supply no Chassis
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Setting up the power supply

Connecting Power supply without Power chassis

The power supply can be connected directly to the power lead without using the
power chassis or Auxiliary power socket. This is the simplest and quickest method
of setting up the power supply. This method is not the best method as it runs the
power supply without a fuse and means it has to be turned off and on at the power
point or by unplugging it.



  1. Mains AC power can Kill or seriously injure you and those around you
  2. Do Not connect your power cable to power while assembling/repairing your equipment
  3. Not ensuring the Power Supply is set to 240V before plugging it in will permanently
    damage it (see instructions below)





Parts Required

Supplied Parts

1 x Power Supply

3 x Fork terminal


Parts to be sourced

1 x Power lead



Recommended tools

Wire stripper

Wire cutter

Crimping tool

Philips head screwdriver


Parts Overview

Power Supply

  1. Terminal 1 - 24v DC + Out
  2. Terminal 2 - 24v DC + Out
  3. Terminal 3 - 24v DC + Out
  4. Terminal 4 - 24v DC - Out
  5. Terminal 5 - 24v DC - Out
  6. Terminal 6 - 24v DC - Out
  7. Terminal 7 - 240v AC Earth - In
  8. Terminal 8 - 240v AC Neutral - In
  9. Terminal 9 - 240v AC Live - In
  10. Power LED
  11. Minor voltage adjuster
  12. Underside mounting holes
  13. Flat mounting holes
  14. Upright mounting holes
  15. Voltage selector
  16. Cooling fan



Power cord


Assembly/Installation process

Make sure your power lead is not plugged into a wall socket (I know, but I
have to say it)

Please check the voltage selection switch is in the right position.


Make sure the switch is set to 240V and not 110v. If it is set to 240v, you will be
able to read it on the switch, if the switch says 110v please use a screwdriver
and push the switch to the right until the switch reads 240v. If it's set to 110v
and is switched on it will permanently damage the power supply. (the switch
may say 220v or 230v depending on the version of the power supply but will
work with 240V)


Cut the IEC female plug from your lead as close to the IEC plug as possible. This
will give you the maximum length of cable. The plug can be discarded as it is not


Remove approximately 30mm of the outer shielding to expose the wires. Wire
cutters are probably best for this task, if you have used a Stanly knife or other blade,
please check the exposed wires for nicks or splits. If a nick has occurred, please cut
off the damaged area and repeat the process again (better safe than sorry).


Strip each wire back approximately 10mm. Give each of the striped wires a
small twist to bind all of the loose strands together. check the wires to make
sure there are no strands that might touch any other wire. If any are identified,
give the wire another twist.



Spread out the wires with the "Live" (Brown) to the right, the "Neutral" (Blue)
in the centre and the "Ground" (Green or Green/Yellow) to the left. Crimp or
solder (soldering preferred) on the fork connectors to the stripped wires. This
step is optional as the wires can be directly screwed in.


With a Philip's head screwdriver loosen off the terminal screws labeled with the
ground symbol, "N" and "L" (terminals 7, 8 and 9). Insert the green wire (Earth) to
the earth terminal (terminal 7), the blue wire (Natural) to the "N" terminal (terminal
8), and, the brown wire (Live) to the live terminal (terminal 9). Tighten all screws.


The power supply is now connected and ready for it's initial test while not under
any load. Once again, make sure the voltage selector is set to 240v. Place the
power supply on a bench near a power socket. Do not hold the power supply
during testing. Make sure the power socket is turned off, plug in the power lead,
and, turn on the power socket. The power LED should now be glowing green
indicating everything is fine. Observe the for a minute or so to make sure nothing
is wrong, Turn it off at the power point and unplug it from the wall. Always unplug
your power supply when not in use. After turning off your power supply, please
wait 60 seconds before turning it back on.

You are now ready to move onto the next step:

Wiring the DC-DC Converter to the power supply.






This site was last updated 11/19/14