• Generator Overcurrent Protection with definite time trip delay
• Two individually settable overcurrent relays
• The Pathfinder function eases faultfinding
• Triple relay operation give more flexibility
• For use with 1A or 5A current transformers
• Up to two individual very fast analogue output signals (<50mS), (optiona)
• DIN96 Slave Indicator with full current scale (optional)

Description

KOC112x series provides overcurrent guard for overload protection of AC generators, motors, transformers etc. for alarms or tripping of non-essential load or breaker.

True RMS measurement not affected by heavily distorted waveforms provides highest up precision (1.0%) protection.

The standard models takes the auxiliary supply voltage from the monitored voltage (terminal 1 & 2).

It can also be delivered with optional separate DC auxiliary voltage (terminal 26 & 27), but that must be specified when ordering.
 
User settable trip levels and delays. Colour of LEDs indicates alarm status. Alarm LEDs flash during count-down.

On non-latching units the adjustable hysteresis can be used for reinstating disconnected loads when current levels fall.

OUTPUTS
Up to two individual very fast analogue output signals (optional) proportional to range (see page 2 for models with outputs). The analogue output is isolated from the CT and auxiliary power.

RELAY OUTPUTS
Relay operation depends on the selected model (see page 2). Other combinations are available on request.

Pathfinder Function
The Pathfinder (only on latching models) indicates the phase causing the trip by flashing pattern of the relevant LED. When either short circuit or over current trips have operated the relevant LED will flash in the following pattern to indicate the phase producing the trip.

Description

KOC112E - KOC112FA - KOC112FAB - KOC112G - KOC112GFA - KOC112GFB