Automation Direct DURApulse GS4 User Manual page 20

Chapter 1: Getting Started
s
eleCTing The
i a
nsTallaTion
AC drives rely on air flow for cooling. As the altitude increases, the air becomes less dense, and
this drop in air density decreases the cooling properties of the air. Therefore, the AC drive must be
oversized to compensate for the decrease in cooling. Most AC drives are designed to operate at
100% capacity at altitudes up to 1000 meters.
NOTE: For use above 1000m, the AC drive must be derated as described below.
d o
eraTe uTpuT
• If the AC drive is installed at an altitude of 0~1000m, follow normal operation restrictions.
• If installed at an altitude of 1000~3000m, decrease 1% of the rated current or lower 0.5°C of
temperature for every 100m increase in altitude.
• Maximum altitude for Corner Grounded is 2000m.
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p d r (
roper rive aTing ConTinued
lTiTude
C b a
urrenT ased on lTiTude
Rating (%) at Standard Ambient Temperature*
100
90
80
70
60
50
40
0 500
*Standard Ambient Temperature = 50°C for UL Open Type / IP20
*Standard Ambient Temperature =
40°C for UL Type 1 / IP 20 & UL Open Type / IP20 Side-by-Side
DuRA
pulse
)
a 1000 m
bove eTers
GS4 Derating for Altitude
T a at Rating = 100%
1000 1500 2000 2500
Altitude (m)
GS4 AC Drive User Manual – 1st Ed, Rev A - 10/20/2017
50 40
45 35
40 30
3000