GE Industrial Solutions EntelliGuard TU Trip Units - Manual (Page 38)

EntelliGuard TU Trip Units: UL/ANSI Models DEH-4567B
Setting up the Trip Unit
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Voltage Unbalance is part of the optional protective relay
feature. If protective relaying is not installed on the trip unit,
this screen will not appear.
• Pickup – settable between 10% and 50% of system
voltage setpoint.
• Band – delay, from 1 to 15 seconds, between pickup
and trip. Setting the Band to OFF disables the relay.
ZERO VOLTAGE TRIPPING
The only Trip on Zero Volts settings
available are
• OFF – do not trip
• ON – trip when all three phases
are zero
UNDERVOLTAGE RELAY
Undervoltage is part of the optional protective relay
feature. If protective relaying is not installed on the trip unit,
this screen will not appear.
• Pickup – settable between 50% and 90% of system
voltage setpoint
• Band – delay, from 1 to 15 seconds, between pickup
and trip. Setting the Band to OFF disables the relay
OVERVOLTAGE RELAY
Overvoltage is part of the optional protective relay feature.
If protective relaying is not installed on the trip unit, this
screen will not appear.
• Pickup – settable between 110% and 150% of system
voltage setpoint
• Band – delay, from 1 to 15 seconds, between pickup
and alarm/trip. Setting the Band to OFF disables the
relay
CURRENT UNBALANCE RELAY
Current Unbalance is part of the optional protective relay
feature. If protective relaying is not installed on the trip unit,
this screen will not appear.
• Pickup – settable between 10% and 50% of the
average 3 phase current
• Band – delay, from 1 to 15 seconds, between pickup
and trip. Setting the Band to OFF disables the relay