Control Elements Menu - GE F650 User Manual

3.1 ENERVISTA 650 SETUP SOFTWARE

3.1.7.6 Control elements menu

This option shows all protection elements available in the relay as shown in the following two tables (exact menu depends
on firmware version).
Table 3-7: Control elements menu, firmware version below 7.50
Control Elements
Setting Group
Underfrequency
Overfrequency
Synchrocheck
Autoreclose
Breaker Failure
VT Fuse Failure
Broken Conductor
Locked Rotor
Pulse Counters
Analog Comparators
Frequency Rate of
Change
Load Encroachment
Max. Number of Starts
Digital Counters
Cold Load Pickup
PLC Timer Masks
3-22
Control elements can be used in either a single setting group (default mode-all units can
operate simultaneously) or three setting groups (elements are grouped in three
independent tables, with only one active at a given time).
Underfrequency unit (81U). Grouped element.
Overfrequency unit (81O). Grouped element.
Synchronism check unit (25). Single element.
Recloser (79). Single element.
Breaker failure (50BF). Single element
Fuse Failure (VTFF). Single element.
Broken or fallen conductor detection function (I2/I1). Grouped element.
Ratio between the negative sequence current, I2, and the positive sequence current I1. In
normal and balanced load situations, this ratio is zero, while in severe load fault conditions,
an unbalance is produced and this ratio is increased.
Locked rotor detection function (48). Grouped element.
Pulse counters function. 8 counters provided.
Analog comparator function. 20 analog comparators provided.
Frequency rate of change function (81R). Grouped element.
Load Encroachment function. Grouped element.
Maximum Number of Starts (66). Single element.
Up to 8 Digital Counters
Cold Load Pickup Function. Not grouped, a single unit provided (Available starting on
firmware version 7.00).
Configuration of masks that can be assigned to PLC timers
F650 DIGITAL BAY CONTROLLER
CHAPTER 3: INTERFACES, SETTINGS & ACTUAL VALUES
GEK-113000-AF