instagrid LINK MAX Benutzerhandbuch Seite 23

42 Protective Devices and Display Elements
Element
1 Circuit breaker (4-pole MCB)
2 3x 2-pole contactor (input)
3 Insulation Monitoring
Device (IMD)
4 Phase Monitoring
Device (PMD)
5 1x 4-pole contactor (output)
Purpose
Protects the system from
overcurrent
Protects the user from currents
from touchable contacts
Monitors the resistance be-
tween neutral (N) and earth
(PE) to detect damaged ca-
bles/loads
Monitors the three individual
phases and checks whether all
three phases are available and
synchronised with each other
Interrupts the connection to the
output socket in case of an IMD
and/or PMD error
Status
Switch must point upwards
(in direction of arrow)
Red light = active
Green light = inactive
Orange flashes = started
Green = activated + active
Red = inactive/failure
Red light (flashing) = error/
inactive
Red light (constant) = active
Red light = active
Green light = inactive
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