5.6 Fuses
This product is a switching mode power supply. The fuse installed is there to protect the power supply in case of excessive input
voltage or internal hardware failure. The fuse should not open during normal operation. In the fuse does open, it indicates a
malfunction. In this case, it is suggested that the product be sent back for service.
WARNING: If the fuses are replaced they must be replaced with the exact make, model and rating fuse. Failure to do this
may cause a safety hazard and may invalidate the warranty.
CAUTION: DOUBLE POLE/NEUTRAL FUSING.
Disconnect power before servicing.
In order to avoid damaging the instrument due to improper operation, be sure to read this user manual. To maintain the specified
accuracy, calibration should be performed annually.
5.7 Power-off procedure
When the supply is not in use, be sure to turn the power switch on the panel to the OFF position to turn off the AC power. After
the power switch is turned to the OFF position, the inner fans will still run for up to 15 seconds. Once the discharge process is
complete, the power supply will shut down.
5.8 Low Voltage Input
When the AC input voltage is lower than the minimum rated voltage which is 90 VAC, the supply will deactivate internal circuitry
and will not operate. To ensure proper operation, confirm that the input AC voltage is within the specified range.
5.9 Output Lead Wires and Connections
The PLS1500 power supply is capable of supplying very high currents and care should be taken to size the output leads and
connectors appropriately. Refer to the following table for suggested wire sizes:
Maximum Current
AWG
70
6
40
8
20
12
10
18
5
22