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Intrinsic Safety (IS) Verification

IEC 60079-11 entity-concept check for combining an associated apparatus (barrier/isolator) with intrinsically safe field apparatus and field wiring — voltage, current, power, capacitance and inductance, including the 1% rule and field cable contribution.

AAJappsEngineering Calculation Report

Intrinsic Safety (IS) Verification

IEC 60079-11 / IEC 60079-14 entity concept

Generated

For preliminary engineering use only — always verify results against project-specific standards and a qualified engineer's review before use in a real design.

Associated apparatus (barrier / isolator)

V
mA
mW
µF
mH

Intrinsically safe field apparatus

V
mA
mW
nF
µH

Field wiring

m
pF/m
µH/m

Voltage / current / power

Uo ≤ Ui28V ≤ 30V
Io ≤ Ii93mA ≤ 130mA
Po ≤ Pi650mW ≤ 1000mW

Cable contribution

Cable capacitance98.50 nF
Cable inductance328.00 µH
Total Ci (device + cable)103.50 nF
Total Li (device + cable)328.00 µH

Capacitance / inductance check (1% rule)

1% rule applies (use full Co/Lo)Yes
Effective Co0.0830 µF (83.0 nF)
Effective Lo4.200 mH (4200.0 µH)
Total Ci ≤ effective Co103.5nF
Total Li ≤ effective Lo328.0µH

Overall

Entity concept combinationDOES NOT COMPLY