4. Intrinsic Safety Explosion Protection Instrumentation
4-14
TI 33Q01J30-01E
Example of Connection at the Barrier in Use (Connection Using
Marshalling Panel)
<Hazardous area>
Grounding for explosion protection
AEA4D
AEA4D
AED5D
AED5D
Marshaling panel
KS cable
<Non-hazardous area>
F040105.ai
Barrier
Figure Example of Connection at the Barrier in Use (Connection Using Marshaling Panel)
• The barrier should be connected with field equipment in accordance with the electric
parameter of each equipment.
• Creepage distance between intrinsic safety circuit and non-intrinsic safety circuit should be
kept 50 mm or more.
• Wiring should be prepared in accordance with IEC 60079-14, NEC (National Electrical Code
: ANSI/NFPA-70), CEC (Canadian Electrical Code), or the wiring for explosion protection
that each country regulates.
Apr. 25, 2022-00
