CMC 356 Reference Manual
42
6.2 Insulation Coordination
Table 6-2:
Insulation coordination
Insulation Coordination
Overvoltage category II
Pollution degree 2 (except for Binary Inputs)
Insulation of function
groups on front panel to
ground (GND)
1
1
Functional groups on CMC 356 front panel:
VOLTAGE OUTPUT, CURRENT OUTPUT (A, B), AUX DC, BINARY OUTPUT,
BINARY / ANALOG INPUT, ANALOG DC INPUT
- Basic insulation with maximum voltage of
600 V
rms
to ground
- Clearance: > 3 mm (0.12 ")
- Creepage: > 6 mm (0.24 ")
- Test voltage: 2200 V
rms
Insulation of functional
groups on front panel from
each other
- Working insulation
- Clearance: > 1 mm (0.04 ")
- Creepage: > 1 mm (0.04 ")
- Test voltage: 1500 VDC
Measurement category
(BINARY / ANALOG
INPUTS)
- CAT III / 300 V
rms
- CAT IV / 150 V
rms
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