ABB 500 Series Builder's Manual page 112

106
Requirements
P is the total power loss of the relay in the case
H
K is the thermal resistance of the cubicle (for the cubicles according to
S
P is the total power loss in the cubicle
S
7DEOH  3HUPLVVLEOH SRZHU ORVVHV IRU ƒ& WHPSHUDWXUH LQFUHDVH LQ
5+*6 DQG 5*+; FDVHV
&DVH W\S
RHGS 6
RHGS
RHGS
RHGX
RHGX
RHGX
RHGX
RHGX
ƒ&: .
+
2.50
1.50
0.90
2.50
1.80
1.40
0.90
0.65
&KDSWHU 
0RXQWLQJ LQ FXELFOHV
table
:
6
10
17
6
8
11
17
23
60)