Miller Spectrum 875 User Manual

. A complete Parts List is available at www.MillerWelds.com
OM-264259 Page 12
4-3. Environmental Specifications
A. IP Rating
IP Rating
IP23CS
This equipment is designed for outdoor use. It may be stored, but is not intended to be used for cutting outside during precipitation unless
sheltered.
IP23CS 2014−09
B. Temperature Specifications
Operating Temperature Range* Storage/Transportation Temperature Range
5° to 104° F (−15° to 40° C)
*Output is derated at temperatures above 104°F (40°C).
−4 to 131°F (−20 to 55°C)
Temp_2016-07
4-4. Duty Cycle And Overheating
Duty Cycle is percentage of 10
minutes that unit can cut at rated
load without overheating. Duty
cycle is based on an ambient tem-
perature of 104° F (40° C).
If unit overheats, output stops,
temperature status light
illuminates, and cooling fan runs.
Wait fifteen minutes for unit to cool
or temperature light to go off.
Reduce amperage or duty cycle
before cutting or gouging.
NOTICE − Exceeding duty cycle
can damage unit and void warranty.
Overheating
Duty1 4/95 − Ref. 805 159-A
4 Minutes Cutting 6 Minutes Resting
5 Minutes Cutting 5 Minutes Resting
0
15
Minutes
A
OR
Reduce Duty Cycle
40% Duty Cycle (208 V)
50% Duty Cycle (230 V)

Miller Spectrum 875 Specifications

General

Amperage Output	20-60 A
CNC Interface	Optional
Gas Supply	Clean, dry, oil-free air or nitrogen
Input Frequency	50/60 Hz
Output Current Range	20-60 A
Welding Process	Plasma cutting
TIG Start	Not applicable
Rated Output	60 A
Cutting Capability	3/4 in (19 mm)
Cutting Capacity	1 in (25 mm)
Severance Capacity	1-1/4 in (32 mm)
Input Phase	1- or 3-Phase
Duty Cycle	60%