Cubicle And Ventilation - Siemens UL 489 Operating Instructions Manual

5.1.3

Cubicle and ventilation

(1) Upper ventilation opening
(2) Insulating liner use NEMA GPO-3, min. 0.094" thick or comparable material
(3) Lower ventilation opening
Frame
Frame Interrupting
rating
size
(A)
800
I
1200
800
1200
1600
II
2000
2500
3000
4000
5000
III
4000
5000
1) Cubicle height given for use with insulating liner on cubicle top or cradle equipped with standard cover
2) Cubicle height given for use with insulating liner on cubicle top or cradle equipped with optional cover
3) Provided by cradle holes
5 – 5
Minimal cubicle dimensions
Class
Width W1 Height H
(inch) (inch)
S,H,L 22
S, L, C 22 22.5
L 32 22.5
C 32
Insulating liner
dimensions
Depth D1 Width W2
(inch) (inch)
1)
15 19.5 18.5
1)
19.5 18.5
2)
19.5 28.5
30 19.5 28.5
Cubicle ventilation
Top
Depth D2
(square
(inch)
inch)
10.5
not required
10.5
55
48
10.5
(2" by 24")
48
10.5
(2" by 24")
(1)
(2)
(3)
Bottom
(square
inch)
1)
55
3)
88
3)
88