ESAB EPP-400 Manuel D'instructions page 102

sectIon 3
Primary power source has the electrode (-) conductor jumpered. The secondary power source has the
1. Connect the negative (-) output cables to the arc starter box (high frequency generator).
2. Connect the positive (+) output cables to the workpiece.
3. Connect the positive (+) and negative (-) conductors between the power sources.
4. Connect the pilot arc cable to the pilot arc terminal in the primary power source. The pilot arc connection in the second-
ary power source is not used. The pilot arc circuit is not run in parallel.
5. Set the Pilot Arc HIGH / LOW switch on the secondary power source to "LOW".
6. Set the Pilot Arc HIGH / LOW switch on the primary power source to "HIGH".
7. If a remote 0.00 to +10.00 VDC current reference signal is used to set the output current, feed the same signal into both
power sources. Connect J1-A (common) of both power sources together and connect J1-B (0.00 - 10.00 VDC) of both
power sources together. With both power sources operating, the output current can be predicted using the following
formula: [output current (amps)] = [reference voltage] x [100]
Connections for parallel installation of two EPP-400 power sources
EPP-400
Secondary Power
Source
work
(+)
2 - 4/0 600V
positive leads
to workpiece
note:
work (+) jumpered.
electrode
(-)
EPP-400
Primary Power
Source
work
(+)
pilot arc
1 - 14 AWG 600V
lead to pilot arc con-
nection in arc starter
box (h.f. generator)
102
InstallatIon
electrode
(-)
2 - 4/0 600V
negative leads
in arc starter box
(h.f. generator)