GE F60 Instruction Manual page 477

CHAPTER 5: SETTINGS
NEUTRAL WIRE OPEN 1 DETECTION
connected in Delta, do not enable this function because there is no neutral wire for Delta connected VT.
NEUTRAL WIRE OPEN 1 3 HRAM PKP
logic to pick up.
DETECTION
Base voltage for this element is
of DELTA VTs. The setting is found under
5.9.0.9 Thermal overload protection (ANSI 49)
SETTINGS  CONTROL ELEMENTS  MONITORING ELEMENTS  THERMAL OVERLOAD PROTECTION 
THERMAL PROTECTION 1(2)
 THERMAL
 PROTECTION 1
F60 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL
— Enables and disables the VT neutral wire open detection function. When the VT is
— Specifies the pickup level of 3rd harmonic of 3V0 signal for the
setting in the case of WYE VTs and (
PHASE VT SECONDARY
SETTINGS  SYSTEM SETUP  AC INPUTS  VOLTAGE BANK  PHASE VT SECONDARY
Figure 5-166: VT fuse fail logic
THERMAL PROTECTION 1

FUNCTION: Disabled
THERMAL PROTECTION 1

SOURCE: SRC1
THERMAL PROTECTION 1

BASE CURR: 0.80 pu
THERMAL PROTECTION 1

k FACTOR: 1.10
MONITORING ELEMENTS
NEUTRAL WIRE OPEN
PHASE VT SECONDARY
Range: Disabled, Enabled
Range: SRC 1, SRC 2, SRC 3, SRC 4
Range: 0.20 to 3.00 pu in steps of 0.01
Range: 1.00 to 1.20 in steps of 0.05
)/ in case
.
5
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