ABB REF630 - Protection Functions; Supported Protection Functions

Table 2. Supported functions
Functionality A B C D N
Protection
Three-phase non-directional overcurrent, low stage 1 1 1 1 1
Three-phase non-directional overcurrent, high stage 2 2 2 2 2
Three-phase non-directional overcurrent, instantaneous stage 1 1 1 1 1
Three-phase directional overcurrent, low stage 2 - - - 2
Three-phase directional overcurrent, high stage 1 - - - 1
Non-directional earth fault, low stage - 1 - 1 1
Non-directional earth fault, high stage 1 1 1 1 1
Non-directional earth fault, instantaneous stage - 1 - 1 1
Directional earth fault, low stage 2 1 3 - 3
Directional earth fault, high stage 1 - 1 - 1
Transient/intermittent earth fault 1 - - - 1
Negative-sequence overcurrent 2 2 2 2 2
Three-phase thermal overload for feeder 1 1 1 - 1
Phase discontinuity 1 1 1 - 1
Three-phase current inrush detection 1 1 1 1 1
Three-phase overvoltage - - 3 - 3
Three-phase undervoltage - - 3 - 3
Positive-sequence overvoltage
1)
- - - -
2
Positive-sequence undervoltage
1)
- - - -
2
Negative-sequence overvoltage
1)
- - - -
2
Residual overvoltage - - 3 - 3
Frequency gradient - - - - 5
Overfrequency - - - - 5
Underfrequency - - - - 5
Load shedding - - - - 6
Fault locator
1)
- - - -
1
Circuit-breaker failure 1 1 1 1 2
Autoreclosing 1 1 1 - 2
Tripping logic 1 1 1 1 2
Feeder Protection and Control 1MRS756380 A
REF630
Product version: 1.0 Issued: 15.09.2009
6 ABB