Getting Started 15
2.4 Output Connections
The main DC output terminal is a screw type terminal block located in the rear panel. Due to the high current rating of
the power supply, proper wire sizes are necessary for safe connectivity and to prevent wires from overheating. Refer to
the below table as a reference for proper wire sizes according to the amount of current used for operation:
Before connecting wires to the output terminals, turnOFF the power supply to avoid damage to the instrument and
the device under test (DUT). For safety, load wires must have a wire gauge size large enough to prevent overheating
when the power supply operates at maximum short circuit output current. It will also prevent large voltage drops from
resistances in the wires.
Hazardous voltages may exist at the outputs and the load connections when using a power supply with a rated output
greater than 40V. To protect personnel against accidental contact with hazardous voltages, ensure that the load and
its connections have no accessible live parts. Ensure that the load wiring insulation rating is greater than to the
maximum output voltage of the power supply.
2.5 Preliminary Check
Complete the following steps to verify that the power supply is ready for use.
2.5.1 Verify AC Input Voltage
Verify and check to make sure proper AC voltages are available to power the instrument. The AC voltage range must
meet the acceptable specication as explained in “2.1 Input Power and Fuse Requirements”.
2.5.2 Connect Power
Connect AC power cord to the AC receptacle in the rear panel and press the power switch to the (ON) position to turn
ON the instrument. On power up, the unit will display its model, shown in the screen below, and then check for the
optional modules.
Figure 2.4 Power On Display
2.5.3 Warm-Up Time
The MR series is fully operable upon switching the power ON. However, to reach the specied equipment accuracy, please
allow the supply to warm up for at least 15 minutes.
2.5.4 Output Check
Follow the steps below to check voltage output with no load connected.
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