Appendix G - Nano Control Drawing
NOTES:
1. Associated Apparatus Entity Parameters: Group IIA
Voc (or Uo) = 14.85Vdc
Isc (or Io)
= 305mA
Po
= 974mW
Ca (or Co) = 7.15uF
La (or Lo)
= 1.52mH
2. The voltage current of this associated apparatus is limited by a resistor such that the output voltage-
current plot is a straight line drawn between open-circuit voltage and short-circuit current.
3. Selected intrinsically safe equipment must be third party listed as intrinsically safe for the application
and have intrinsically safe entity parameters conforming with the following:
TABLE 1 Group IIA
I.S. EQUIPMENT
ASSOCIATED APPARATUS
v MAX (or Ui)
≥
Voc or Vt (or Uo)= 14.85V
I max (or Ii)
≥
Isc or It (or Io) = 305mA
P max Pi
≥
Po = 974mW
Ci + Ccable
≤
Ca (or Co) = 7.15uF
Li + Lcable
≤
La (or Lo) = 1.52mH
4. This associated apparatus may also be connected to simple apparatus as defined in Article 504.2 and
installed and temperature classified in accordance with Article 504.10(B) of the National Electrical
Code (ANSI/NFPA 70) or other local codes, as applicable.
5. Capacitance and inductance of the field wiring from the intrinsically safe equipment to the associated
apparatus shall be calculated and must be included in the system calculations as shown in Table 1.
Cable capacitance, Ccable, plus intrinsically safe equipment capacitance, Ci must be less than the
marked capacitance, Ca (or Co), shown on any associated apparatus used. The same applies for
inductance (Lcable, Li and La or Lo, respectively). Where the cable capacitance and inductance per
foot are not known, the following values shall be used: Ccable = 60pF/ft., Lcable = 0.2uH/ft.
6. The associated apparatus must be connected to a suitable ground electrode per the National Electrical
Code (ANSI/NFPA 70), the Canadian Electrical Code or other local installation codes, as applicable.
The resistance of the ground path must be less than 1 ohm.
7. Where multiple circuits extend from the same piece of associated apparatus, they must be installed in
separate cables or in one cable having suitable insulation. Refer to Article 504.30(B) of the National
Electrical Code (ANSI/NFPA 70) and Instrument Society of America Recommended Practice ISA
RP12.6 for installing Intrinsically safe equipment.
8. Intrinsically safe circuits must be wired and separated in accordance with Article 504.20 of the National
Electrical Code (ANSI/NFPA 70) or other local codes as applicable.
9. This associated apparatus has not been evaluated for use in combination with another associated
apparatus.
Doc. No.: M2010-EU Rev.: 13
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Summary of Contents for M2010-EU
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Page 21: ...Conduit Installation Doc No M2010 EU Rev 13 Page 21 of 149...
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Page 86: ...Typical Installation Drawings 30 0230 S Doc No M2010 EU Rev 13 Page 86 of 149...
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