IDEX Health & Science VS-606V7 Series - Manual (Page 167)

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Appendix - CE Conformance
CE Conformance - Low Voltage Directive (LVD) Compliance
c
These circuits are hazardous and are separated from accessibility by protective
separation.
d
These circuits are not separated from hazardous circuits by protective
separation, but only with basic insulation. These circuits cannot be accessed and
must not be interconnected with any circuits which are accessible, unless they
are isolated from accessible circuits by supplemental insulation. These circuits
can be connected only to the following circuits:
30VDC or less (overvoltage category 2)
250 VAC or less (overvoltage category 2)
e
These circuits are not separated from hazardous circuits by protective
separation, but only with basic insulation. These circuits cannot be accessed and
must not be interconnected with any circuits which are accessible, unless they
are isolated from accessible circuits by supplemental insulation.