User Manual

Table 1 – Wire Gauge Rating
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.
SHOCK HAZARD:
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.
2.4 Preliminary Check
Complete the following steps to verify that the power supply is ready for use.
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 specification as explained in “2.1 Input Power and Fuse
Requirements”.
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.
2.4.1 Warm-up Time
The MR series is fully operable upon switching the power ON. However, to reach the specified
equipment accuracy, please allow the supply to warm up for at least 15 minutes.
2.4.2 Output Check
2.4.2.1 Voltage Check