Tweco 1000 CE Merlin - Manuel (Page 20)

INSTALLATION 3-2 Manual 0-2731
3.04 Lifting Options
WARNINGS
Do not touch live electrical parts.
Disconnect input power conductors from de-ener-
gized supply line before moving unit.
The recommended method for lifting the power supply is
to use the built in lifting eye located in the Top Panel.
The unit may also be lifted using a forklift as follows:
1. Approach from the front or rear of the unit.
2. Place the forks between the rear legs or the front legs.
3. Center the forks under the unit and carefully check
for proper balance before lifting.
WARNING
FALLING EQUIPMENT can cause serious per-
sonal injury and equipment damage.
• Do NOT pull power supply by torch leads.
3.05 Input Power Cable
Connections
The Power Supply is factory wired to accept input volt-
ages of 380-415 VAC, 50 or 60 Hz, three-phase power.
A. Power Source
The power source must conform to local and national elec-
tric codes. For suggested circuit protection and wiring
requirements refer to Appendix 1.
WARNING
Disconnect primary power at the source before as-
sembling or disassembling the Power Supply, torch
parts, or torch and leads assemblies.
B. Input Power Cable Connections
The shielded input power cable must be connected to a
380-415 VAC, three-phase power source. Refer to the fol-
lowing procedure:
CAUTION
The input power cable must not be modified in any
way as shielding is installed on the cable.
1. At the free end of the input power cable, cut back
the insulation on the individual wires approxi-
mately 1/8 - 3/16 inch (3-5 mm).
2. Connect the ends of the individual wires and
shield to a customer supplied plug or disconnect
box per the following (see NOTES):
• Brown wire to Line 1 (Live)
• Blue wire to Line 2 (Live)
• Black wire to Line 3 (Live)
• Yellow/Green wire to Ground (power ground)
• Cable shield to earth ground
NOTES
The shield braid on the free end of the input cable
must be connected to a solid earth ground with as
short a connection as possible at the plug or discon-
nect box. Refer to Subsection 3.07 for procedures on
installing an earth ground.
Make sure that the yellow/green wire is connected
to power line safety ground.