Proface PS4800 - 19 Panel PC" - Manual (Page 73)

Main Power Connection
73
2. Associated Non-incendive Field Wiring Apparatus shall satisfy the following:
3. If the electrical parameters of the cable are unknown, the following values may
be used:
z C
cable
= 196.85 pF/m (60 pF/ft)
z L
cable
= 0.656
µH/m (0.20 µH/ft).
4. Wiring methods must be in accordance with the electrical code of the country in
use.
The PS-B unit must be installed in an enclosure. If installed in a Class I, Division 2
Location, the enclosure must be capable of accepting one or more Division 2 wiring
methods.
The PS-B unit is suitable for use in Class I, Division 2, Groups A, B, C, D and
provides non-incendive field wiring to apparatus in Class I, Division 2, Groups A, B,
C, D.
PS-B Unit - Associated Non-incendive Field
Wiring Apparatus (Mouse,
Keyboard)
V
oc
I
sc
C
a
L
a
≤
≤
≥
≥
V
max
I
max
C
i
+ C
cable
L
i
+ L
cable
DANGER
EXPLOSION HAZARD
z Substitution of components may impair suitability for Division 2
hazardous(classified) locations.
z Do not energize or disconnect the device while area is known to be hazardous.
z The associated non-incendive field wiring apparatus shall not be connected in
parallel unless permitted by the associated non-incendive apparatus approval.
Failure to follow these instructions will result in death or serious injury.