N1500i FACS Manual
15
Part No. 729-110-053 V.1.03
© 2018 Nelson Stud Welding, Inc. All rights reserved.
1.7 Generator Sizing
Generator Sizing
The N1500i may be supplied with a generator with the following
characteristics:
•
Full Power 1500A -
For 1500A weld current using more than 25
ft 4/0 weld cable: Use a 100kW (125 kVA) with at least +/- 1.5%
regulation from no-load to full-load, and less than 5% THD wave
form distortion to get the full output current.
•
Economy 1500A -
For 1500A weld current using less than 25ft
4/0 weld cable: Use a bare minimum 68kW(85kVA) generator,
with at least +/- 1.5% regulation from no-load to full-load, and less
than 5% THD waveform distortion.
•Smaller Studs -
For 800A or less weld current with maximum cab-
le load: Use a 55kW (66kVA), with at least+/-1.5% regulation from no-
load to full load, and less than 5% THD waveform distortion.
Generators without published datasheets should be oversized (on the
order of 125% of what is suggested here) to insure against the
possibility of poor voltage regulation by the generator during the heavy
pulse loads required when performing stud welds.
