Contact Output Example for Overcurrent Warning
The 07-08 auxiliary contact can be used for overcurrent warning, dedicated ground fault or dedicated instantaneous according to
settings. Activating the instantaneous function (Sc) forces the contact to be set for instantaneous. When current flow exceeds overcurrent
warning threshold parameters, the warning terminal opens and closes repeatedly every second. When the trip occurs, the alert contact
output would be identical to the trip contact (a).
Example when using the Dedicated Ground Fault/Instantaneous Contact
When using the dedicated ground fault/instantaneous contact, the main contacts (95-96, 97-98) will not activate under ground fault/
instantaneous conditions. When the dedicated ground fault contact function is not used, the main terminals (95-96, 97-98) activate
identically to normal trip conditions when a ground fault/instantaneous occurs. When the instantaneous setting is activated, the
auxiliary terminal (07-08) is automatically set to instantaneous contact, and can no longer be used as overcurrent warning or ground
fault contact.
Overload
Under Warning Conditions
Normal Operation
Starting Time
Trip
Starting Current
Current Setting
Warning Setting
Normal Current
Trip Contact (b)
Main Contact
(95-96, 97-98)
Trip Contact (a)
Auxiliary Contact
(07-08)
Overcurrent Warning
(AL-c)
1sec
Starting Current
Current Setting
Warning Setting
Normal Current
Trip Contact (97-98)
Instantaneous Only
(Sc-c)
Main Contact
(95-96, 97-98)
Trip Contact (95-96)
Auxiliary Contact
(07-08)
Ground Fault Only
(gF-c)
Overload
Under Warning Conditions
Normal Operation
Starting Time
Trip
15
Electronic Motor Protection Relays
VCB
MCCB
ACB
MS
RELAY
Summary of Contents for Earth Leakage HGMP N60 Z
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