GE Industrial Solutions Entellisys 5.0 User Manual - Manual (Page 99)

Advanced Protection Relays 99
5
5.3.3.2 Trip settings
Relay Enabled: Select Enabled to enable the relay.
Curve Type: Select either Constant time curve or Inverse time curve from the Curve Type
drop-down menu.
Pickup: Adjust the undervoltage pickup from 10% to 95% in increments of 1% from the Pickup
Setting drop-down menu.
Delay: Adjust the undervoltage delay from 0.5 to 600 seconds in increments of 0.5 seconds from
the Time Delay drop-down menu.
Phase Requirement: Select from among the following options using the Phase Requirement
drop-down menu:
•
Operate if any one phase is below the pickup threshold
•
Operate if any two phases are below the pickup threshold
•
Operate if all three phases are below the pickup threshold
Blocking Voltage Enabled: Select Enabled in the Blocking Voltage section to enable the
blocking voltage.
Blocking Voltage Setting: Adjust the blocking voltage from 5% to 75% in increments of 1%
using the Setting drop-down menu in the Blocking Voltage section.
Open Trip: Select the command issued when the relay operates from the Open Trip drop-down
menu. Options are Open and don't activate lockout and Trip and activate lockout.
5.3.3.3 Alarm settings
Relay Enabled: Select Enabled to enable the alarm relay.
Curve Type: Select either Constant time curve or Inverse time curve from the Curve Type
drop-down menu.
Pickup: Adjust the undervoltage pickup from 10% to 95% in increments of 1% from the Pickup
Setting drop-down menu.
Delay: Adjust the undervoltage delay from 0.5 to 600 seconds in increments of 0.5 seconds from
the Time Delay drop-down menu.
Phase Requirement: Select from among the following options using the Phase Requirement
drop-down menu:
•
Operate if any one phase is below the pickup threshold
•
Operate if any two phases are below the pickup threshold
•
Operate if all three phases are below the pickup threshold
Blocking Voltage Enabled: Select Enabled in the Blocking Voltage section to enable the
blocking voltage.
Blocking Voltage Setting: Adjust the blocking voltage from 5% to 75% in increments of 1%
using the Setting drop-down menu in the Blocking Voltage section.