GE Multilin W650 - Protection Elements; Change of Setting Tables in W650 Elements

GEK-113032A W650 Wind Generator Protection System 5-25
5 SETTINGS 5.4 PROTECTION ELEMENTS
5
5.4PROTECTION ELEMENTS 5.4.1 CHANGE OF SETTING TABLES IN W650 ELEMENTS
W650 relays incorporate the following protection
elements:
CURRENT ELEMENTS
Instantaneous overcurrent:
3 x PHASE IOC HIGH (50PH)
3 x PHASE IOC LOW (50PL)
3 x NEUTRAL IOC (50N)
3 x GROUND IOC (50G)
3 x SENSITIVE GROUND IOC (50SG)
Time delayed overcurrent:
3 x PHASE TOC HIGH (51PH)
3 x PHASE TOC LOW (51PL)
3 x NEUTRAL TOC (51N)
3 x GROUND TOC (51G)
3 x SENSITIVE GROUND TOC (51SG)
Negative sequence overcurrent:
3 x NEGATIVE SEQUENCE TOC (46P)
DIRECTIONAL ELEMENTS
3 x PHASE DIR (67P)
3 x NEUTRAL DIR (67N)
3 x GROUND DIR (67G)
3 x SENSITIVE GROUND DIR (67SG)
VOLTAGE ELEMENTS
Phase under/overvoltage
4 x PHASE UV (27P)
4 x PHASE OV (59P)
Zero sequence overvoltage
3 x NEUTRAL OV HIGH (59NH)
3 x NEUTRAL OV LOW (59NL)
Additional under/overvoltage (can be connected to the
open delta for measured zero sequence, or to the
busbar)
3 x AUXILIARY OV (59X)
3 x AUXILIARY UV (27X)
Voltage Unbalance
3 x Voltage Unbalance (60)
POWER
4 x DIRECTIONAL POWER (32)