Hypertherm H401 Power Supplies - Manual (Page 32)

INSTALLATION
3-8 H401 & H601 Instruction Manual
5
WARNING
Parallel Systems
E LECTRICAL SHOCK CAN KILL
If the power supply is used in parallel with another power supply, or used as a slave unit with
another power supply, both line disconnect switches must be in the OFF position and remain in the
OFF position during installation and maintenance work.
Parallel Power Supply Connections
For increased capacity, power supplies may be connected in parallel. See figures below. This arrangement will also
cause the panel ammeter on power supply #1 to indicate the total arc current produced by both power supplies.
The panel ammeter on power supply #2 will indicate only the part of the arc current produced by power supply #2.
Power Supply 1
Connect the contactor control relays in parallel.
Power Supply 2
57 58
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
H401-Power Supply 2 H601-Power Supply 1
Single 600 Volt 4/0 Cable
Single 600 Volt 4/0 Cable
600 Volt 4/0 Cable Pairs
To
Plasma Console
Negative (-)
To
Water Table
Star Ground
Positive (+)
SHUNT
SHUNT
SHUNT
To
Remote
Current Display
H601-Power Supply 2 H601-Power Supply 1
Single 600 Volt 4/0 Cable
Single 600 Volt 4/0 Cable
600 Volt 4/0 Cable Pairs
To
Plasma Console
Negative (-)
To
Water Table
Star Ground
Positive (+)
SHUNT
To
Remote
Current Displ
SHUNT
SHUNT
SHUNT
E F (ref)