ESAB POWERCUT-1250, Installation, Operation And Service Manual

Page: 17 / 44

201
Before connecting to input power, make sure there is a line (wall) disconnect
switch with fuses or circuit breakers at the main power panel. You may either use
the factory-installed input power cable (4/c, type SO (90 °C), 10 ft (3.1 m) length)
or provide your own input power leads. If you choose to provide your own, make
sure they are insulated copper conductors. You must have two (single-phase) or
three (three-phase) power leads and one ground wire. The wires may be heavy
rubber covered cable or may be run in a solid or flexible conduit. Refer to Table
2-1 and 2-2 for recommended input conductors and line fuse sizes.
Table 2-1. ( PC-1250 ) recommended Sizes
for Input Conductors and Line fuses
Input requirements Input & Gnd fuse
Volts Phase Amps Conductor Size
CU/AWG Amps
208 1 67A 6 100
208 3 33A/Ph. 6 50
230 1 61A 6 100
230 3 29A/Ph. 6 50
460 3 20 6 50
400 3 18 6mm 2 50
575 3 15 10 25
Table 2-2. ( PC-1500 ) recommended Sizes
for Input Conductors and Line fuses
I
nput requirements Input & Gnd fuse
Volts Phase Amps Conductor Size
CU/AWG Amps
208 1 82A 6 100
208 3 44A/Ph. 6 80
230 1 74A 6 100
230 3 40A/Ph. 6 80
460 3 27 6 50
400 3 24 6mm 2 50
575 3 18 10 50
Before making any connections to the
power source output terminals, make
sure that all primary input power to the
power source is deenergized (off) at the
main disconnect switch and that the input
power cable is unplugged.
ELECTrIC SHOCK CAN KILL! Before making
electrical input connections to the power
source, "Machinery Lockout Procedures"
should be employed. If the connections
are to be made from a line disconnect
switch, place the switch in the off position
and padlock it to prevent inadvertent
tripping . If the connection is made from
a fusebox, remove the corresponding
fuses and padlock the box cover. If it is
not possible to use padlocks, attach a
red tag to the line disconnect switch (or
fuse box) warning others that the circuit
is being worked on.
The chassis must be connected to an ap-
proved electrical ground. failure to do
so may result in electrical shock, severe
burns or death.
SECTION 2 INSTALLATION
NOTE !!!
400V CE Mains Supply requirements:
High power equipment may, due to the primary current drawn from the mains supply, influence the pow-
er quality of the grid. Therefore connection restrictions or requirements regarding the maximum permis-
sible mains impedance or the required minimum supply capacity at the interface point to the public grid
may apply for some types of equipment (see technical data). In this case it is the responsibility of the
installer or user of the equipment to ensure, by consultation with the distribution network operator if
necessary, that the equipment may be connected.