CD Automation REVO C, User Manual, Page: 19 / 78

REVO C
1PH from 300A to 800A
User’s manual
19
6.4 Fan Specification
Supply Size Number of fans Number of fans
230Vac
Standard
S12
300A, 400A, 500A, 600A One Fan - 16W Two Fans - (16W x 2) 32W
S12 700A Two Fans - (16W x 2) 32W Two Fans - (16W x 2) 32W
S15 800A Two Fans - (16W x 2) 32W Two Fans - (16W x 2) 32W
115Vac
Option
S12 300A, 400A, 500A, 600A One Fan - 14W Two Fans - (14W x 2) 28W
S12 700A Two Fans - (14W x 2) 28W Two Fans - (14W x 2) 28W
S15 800A Two Fans - (14W x 2) 28W Two Fans - (14W x 2) 28W
24Vdc
Option
S12 300A, 400A, 500A, 600A One Fan - 7W Two Fans - (7W x 2) 14W
S12 700A Two Fans - (7W x 2) 14W Two Fans - (7W x 2) 14W
S15 800A Two Fans - (7W x 2) 14W Two Fans - (7W x 2) 14W
6.5 Environmental installation conditions
Ambient temperature 0-40°C (32-104°F) at nominal current. Over 40°C (104°F) use the derating curve.
Storage temperature -25°C to 70°C -13°F to 158°F
Installation place Don’t install at direct sun light, where there are conductive dust, corrosive gas, vibration
or water and also in salty environmental.
Altitude Up to 1000 meter over sea level. For higher altitude reduce the nominal current of 2%
for each 100m over 1000m
Humidity From 5 to 95% without condense and ice
Pollution Level Up to 2nd Level ref. IEC 60947-1 6.1.3.2
6.6 Derating Curve and Thermal conditions
The nominal current of the units in specification are referred
to continuous service at 40°C ambient temperature. For
higher temperature multiply the nominal current times
derating coefficient K as represented in the graph.
6.7 Calculating flow capacity of the fan
All the thyristor units when are in conduction produces power
loss that is dissipated inside cubicle in terms of heating. Due
to this fact the internal temperature of cubicle is higher than
ambient temperature. To be cooled the thyristor need of
fresh air cooling and to do it is normally used a fan mounted
on the front door or on the roof of the cabinet.
Procedure to size
Fan air mass flow (V) : see power loss for
each thyristor and fuse mounted indicated in the manual
related to the current (Output feature and Internal fuse
Chapter).
Qv = total power losses (w) Altitude
(thy fuse power loss) 0:100 meters f = 3.1 m3k/Wh
ta = ambient temperature (°C) 100:250 meters f = 3.2 m3k/Wh
tc = cabinet temperature (°C) 250:500 meters f = 3.3 m3k/Wh
V = fan air mass flow (m3/h) 500:750 meters f = 3.4 m3k/Wh
f = altitude coefficient (see table on right)
The formulas used are for information only and is not a substitute for a proper thermal
rating done by a qualified person.
Derating
l max = l nominal x K
1
15 20 25 30 35 40 45 50 55
1,2
1
0,8
0,6
0,4
0,2
0
1 1 1 1
0,9
0,8
CABINET TEMPERATURE °C
K
Operation at ambient operating temperature above 40°C
not covered by UL
®
For higher cabinet temperature
contact the producer of the unit
V=f * Qv
tc-ta
IND. CONT. EQ.
E231578 2RD5