BEFORESWITCHINGTHEDEVICEON
Measuringcentres–M
320,MC330,MC350&MC350H ‐ User’sManual 3
BEFORESWITCHINGTHEDEVICEON
Checkthefollowingbeforeswitchingonthedevice:
Nominalvoltage,
Supplyvoltage,
Nominalfrequency,
Voltageratioandphasesequence,
Currenttransformerratioandterminalsintegrity,
Protectionfuse(recommendedmaximalexternalfusesizeis6A–atypewithareddotorequivalent),
Integrityofearthterminals(wherenecessary)
CAUTION
Acurrenttransformersecondaryshouldbeshortcircuitedbeforeconnectingthemeter.