2 - Fagor Automation

Selection criteria
5.
SELECTING CRITERIA
Ballast resistor selection guide
232
DDS
HARDWARE
Ref.1307
230
Once the values of Pmx and Pe are calculated, follow these flow charts:
NOTE. If you have external resistor ER+TH-/ or ER-TH-18/+FAN,
already discontinued, use this diagram to obtain the Ohm values required
for each power supply.
PS-65A
PS-25B4
XPS-25
XPS-65
Pmx >
36kWs / (0.6 s)
= 60 kW
NO
Pe > 600 W
YES
YES
Pmx >
35kWs / (1 s)
= 35 kW
YES
NO
Pe > 500 W
YES
ER+TH-18/1100 or
ER+TH-18/1800 or
ER+TH-18/2200 or
ER+TH-18/1000+FAN or
ER+TH-18/1500+FAN or
ER+TH-18/2000+FAN
NO
Pmx >
18kWs / (0.6 s)
= 30 kW
YES
Pmx >
50kWs / (1 s)
= 50 kW
YES
F. H5/12
Selection of the Ballast resistor for the power supplies.
NO
ER+TH-18/1100//ER+TH-18/1100 or
ER+TH-18/1800//ER+TH-18/1800 or
ER+TH-18/2200//ER+TH-18/2200 or
ER+TH-18/1000+FAN//ER+TH-18/1000+FAN or
ER+TH-18/1500+FAN//ER+TH-18/1500+FAN or
ER+TH-18/2000+FAN//ER+TH-18/2000+FAN
NO
NO
Pe > 520 W
YES
ER+TH-18/1100 or
ER+TH-18/1800 or
ER+TH-18/2200 or
ER+TH-18/1000+FAN or
ER+TH-18/1500+FAN or
ER+TH-18/2000+FAN
Pe > 1800 W
YES
NO
NO
ER+TH-18/1100//ER+TH-18/1100 or
ER+TH-18/1800//ER+TH-18/1800 or
ER+TH-18/2200//ER+TH-18/2200 or
ER+TH-18/1000+FAN//ER+TH-18/1000+FAN or
ER+TH-18/1500+FAN//ER+TH-18/1500+FAN or
ER+TH-18/2000+FAN//ER+TH-18/2000+FAN
NO
External
Ballast
NO
External
Ballast
NO
External
Ballast
NO
External
Ballast