OutputOutput Selectable FunctionSelectable Function
TS1
START1
• Linked to low-set overcurrent and/or earth-fault trip signal.
• Linked to low-set overcurrent and/or earth-fault start signal.
• Linked to high-set overcurrent and/or earth-fault trip signal.
• Linked to high-set overcurrent and/or earth-fault start signal.
• Backup for circuit breaker failure protection.
TS2
TRIP
• Linked to low-set overcurrent and/or earth-fault trip signal.
• Linked to high-set overcurrent and/or earth–fault trip signal.
This is the default trip signal output for both overcurrent and earth-
fault.
SS1
START2
• Linked to low-set overcurrent and/or earth-fault start signal.
• Linked to high-set overcurrent and/or earth-fault start signal.
SS2
SIGNAL1
• Linked to low-set overcurrent and/or earth-fault trip signal.
• Linked to high-set overcurrent and/or earth-fault trip signal.
SS3
SIGNAL2
• Linked to low-set overcurrent and/or earth-fault trip signal.
• Linked to high-set overcurrent and/or earth-fault trip signal.
2.5 Output Contacts
The MK2000 has six relay outputs, namely, TRIP(TS2), START1(TS1), START2
(SS1), SIGNAL1(SS2), SIGNAL2(SS3) and IRF. The functions of the relay
outputs are user programmable as follow:
IRF relay is not user programmable. The function of this relay is for signaling
an internal relay failure. When the auxiliary power of the relay is switched on
and the MK2000 is functioning normally, the IRF relay output will be
energized hence the NC contact will open and the NO contact will close.
MK2000
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