GE BC5005 User Manual download pdf (Page 22)

GFK-2023C Chapter 3 Installation 3-7

Nonincendive Field Wiring Control Drawing CD-E219479

for USB Port Connections

Hazardous (Classified) Location

Class I, Division 2 Groups A, B, C, and D

Front USB Port on Computer No._________________

Nonincendive Field

Wiring Apparatus

Associated Nonincendive

Field Wiring Apparatus

(

Com

uter

)

Vmax

Imax

Voc

Isc

Notes:

1. Nonincendive Circuit Parameters:

Voc = 4.969 VDC

Isc = 2.06 A

Ca = 75 µF

La = 40 µH

2. Selected Nonincendive Field Wiring Apparatus shall satisfy the following:

Voc

≤

Vmax

Isc

≤

Imax

≥

Ci + C cable

≥

Li + L cable

3. If the electrical parameters of the cable are unknown, the following values may be

used:

Capacitance – 60 pF/ft

Inductive – 0.20 µH/ft

4. Nonincendive Field Wiring must be installed in accordance with Article 501.4(B)(3) of

the National Electrical Code ANSI/NFPA 70.

5. Selected Nonincendive Field Wiring Apparatus must not be connected to external

power source.

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