GE Industrial Solutions Entellisys 5.0 User Manual - Manual (Page 151)

Administration 147
8
8.2.1 Single-point Overcurrent Settings
Breakers must have ST, IOC or Switchable ST/IOC for single-point RELT to function. RELT
(Topology 0) settings should be reviewed to provide an acceptable level of increased protection
while the system is in Reduced Energy Let - thru mode. See
Section 5: Single-point functions
on page 57 for more information.:
The minimum settings for overcurrent relays for Topology 0 are:
Setting Value
IOC Enabled Enabled
IOC Pickup Setting Multiplier 1.5
ST Protection Switch Enabled
ST Pickup Setting 1.5
ST I2T Curve Enabled
ST Delay Band Setting 0
LT Delay Band Setting 0
GF Protection Switch Enabled
GF Trip Priority 0
GF Alarm Enable Enabled
GF Trip/Alarm Pickup Setting 0.2
GF Trip/Alarm I2T Curve Enabled
GF Trip/Alarm Delay Band Setting 0