Rockwell Automation 1502 Medium Voltage Contactor, 800A (Series D and E) - Manual (Page 48)

Maintenance 4-19
1502-UM051E-EN-P – June 2013
Table 4.A – Dimension “A” Settings in Inches (millimeters in brackets)
EXISTING NEW ALTITUDE RANGE
ALTITUDE Increase or Decrease Dimension “A” by:
RANGE 0-1000 m 1000-2000 m 2000-3000 m 3000-4000 m 4000-5000 m
0-1000 m N/A +0.073 (1.85) +0.140 (3.56) +0.194 (4.93) +0.246 (6.25)
1000-2000 m -0.073 (-1.85) N/A +0.067 (1.70) +0.121 (3.07) +0.173 (4.39)
2000-3000 m -0.140 (-3.56) -0.067 (-1.70) N/A +0.054 (1.37) +0.106 (2.69)
3000-4000 m -0.194 (-4.93) -0.121 (-3.07) -0.054 (-1.37) N/A +0.052 (1.32)
4000-5000 m -0.246 (-6.25) -0.173 (-4.39) -0.106 (-2.69) -0.052 (-1.32) N/A
4. On the rating label, change the catalog number (altitude suffix), the stated
altitude range and the current rating. Refer to Table 4.B for the derated
continuous current and B.I.L. withstand ratings for each altitude range.
A contactor will only function properly in the altitude range
for which it is set up. If functional tests are required, they
must be performed at the proper altitude or in a pressure
chamber which simulates the proper altitude.
A T T E N T I O N
Table 4.B – Contactor Deratings
Altitude Range
Continuous
Current Rating
B.I.L. Withstand
Rating
0-1000 m 800 A 60 kV
1000-2000 m 780 A 54 kV
2000-3000 m 760 A 48 kV
3000-4000 m 740 A 42 kV
4000-5000 m 720 A 36 kV