Power Supply Input Connections - Primary Power - Lincoln Electric FineLine 300HD Operator's Manual

BK8053-000107 Rev D

3.5 Power Supply Input Connections - Primary Power

Refer to chart below for recommended fuse, wire sizes, and type of copper wires. Fuse
the input circuit with the recommended current rated fuses or breakers. Choose input
and grounding wire size according to local or national electric codes. Using input wire
sizes, fuses, or circuit breakers smaller than recommended may result in "nuisance"
shut-offs even if the machine is not being used at high currents.
Power
Supply Voltage
Model
K4900-1 380-415V / 3 / 50/60
K4900-1 460V / 3 / 50/60
K4900-1 575V / 3 / 50/60
K4900-2 380-415V / 3 / 50/60
1 Wire and Fuse Sizes based upon the U.S. National Electric Code and maximum output.
Connection to the supply circuit can be by means of flexible supply cables or supply
cables through conduit to a permanent installation. The supply cables should have a
600 volt minimum rating and should be sized according to local and national codes.
Remove the access panel as shown in Figure 3 or Figure 4; replace when installation is
complete.
Select Voltage
For Power Supply model K4900-1, set the voltage selection jumper to match the
actual supply voltage; refer to Figure 3. Model K4900-2 only has one available
voltage selection and the jumper is set at the factory; refer to Figure 4.
Make Connections
Supply cables and terminations are provided by the OEM or end user. Route flexible
supply cables through the strain relief on the back of the Power Supply and connect
as shown in Figure 3 or Figure 4. For supply cables through conduit, install the
conduit in place of the strain relief and connect supply cables as described above.
Under no circumstances are the supply cables to be routed through the opening in
the Power Supply cabinet without conduit or an appropriate strain relief as per local
and national codes.
This information is subject to the controls of the Export Administration Regulations [EAR]. This information shall not be provided to
non-U.S. persons or transferred by any means to any location outside the United States contrary to the requirements of the EAR.
** Before connecting primary power, check the data plate
on the Power Supply to verify the voltage required **
Input
Amperes
Breaker Size
123
108
95
123
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FineLine 300HD Plasma System
Fuse Type 75C Copper Wire in
or Conduit AWG (IEC) Sizes
40°C (104°F) Ambient
150 1/0 (70)
125 1 (50)
100 2 (35)
150 1/0 (70)
Type 75C Copper
Ground Wire in Conduit
AWG (IEC) Sizes
6 (16)
6 (16)
8 (10)
6 (16)