Allen-Bradley PowerFlex 525 Original Instructions Manual page 17

Derating Guidelines for High Altitude
The drive can be used without derating at a maximum altitude of 1000 m (3300 ft).
If the drive is used above 1000 m (3300 ft):
• Derate the maximum ambient temperature by 5 °C (41 °F) for every additional 1000 m (3300 ft), subject to limits
listed in the Altitude Limit (Based on Voltage) table below.
Or
• Derate the output current by 10% for every additional 1000 m (3300 ft), subject to limits listed in the Altitude Limit
(Based on Voltage) table below.
Altitude Limit (Based on Voltage)
Drive Rating
100...120V 1-Phase
200...240V 1-Phase
200...240V 3-Phase
380...480V 3-Phase
525...600V 3-Phase
High Altitude
120
110
100
90
0
70
60
50
40
0 1000 2000 3000
Altitude (m)
Debris Protection
Take precautions to prevent debris from falling through the vents of the drive housing during installation.
Storage
• Store within an ambient temperature range of -40...85 °C
• Store within a relative humidity range of 0...95%, noncondensing.
• Do not expose to a corrosive atmosphere.
(1) The maximum ambient temperature for storing a Frame E drive is 70 °C.
AC Supply Source Considerations
Ungrounded Distribution Systems
ATTENTION: PowerFlex 525 contains protective MOVs that are referenced to ground. These devices must be disconnected if the
drive is installed on an ungrounded or resistive grounded distribution system.
ATTENTION: Removing MOVs in drives with an embedded filter will also disconnect the filter capacitor from earth ground.
Center Ground (Wye Neutral)
6000 m
2000 m
6000 m
4000 m
2000 m
60
50
40
30
20
4000 0
Rockwell Automation Publication 520-TD001B-EN-E - June 2013
Corner Ground, Impedance
Ground, or Ungrounded
6000 m
2000 m
2000 m
2000 m
2000 m
1000 2000 3000 4000
Altitude (m)
(1)
.
PowerFlex 525 AC Drive Specifications
17