GE Multilin G650 Manual page 219

5.4 PROTECTION ELEMENTS
5.4.10.2 POWER FACTOR LIMITING (55).(FOR ENHANCED MODELS ONLY)
This element allows the user to protect the machine against power factor values out of limits. The element has two stages
which can be used as alarm or as trip.
Table 5–75: POWER FACTOR LIMITING ELEMENT SETTINGS
SETPOINT > PROTECTION ELEMENTS > POWER > PWR FACTOR LIMITING >
PWR FACTOR LIMITING 1> PWR FACTOR LIMITING 2 > PWR FACTOR LIMITING 3
SETTING DESCRIPTION
Function permission
Pickup level for PF Lead Stage1
Pickup level for PF Lag Stage1
Trip time for PF Stage1
Pickup level for PF Lead Stage2
Pickup level for PF Lag Stage2
Trip time for PF Stage2
Snapshot Event generation
PF lag/Lead Stg level settings are cos ϕ values
• Power Factor Function: This setting allows enabling or disabling the Power Factor Limiting element.
• PF Lead Stg # Level: This setting defines the value of lead three-phase power factor to operate.
• PF Lag Stg # Level: This setting defines the value of lag three-phase power factor to operate.
5
Table 5–76: POWER FACTOR LIMITING INTERNAL SIGNALS
5-76
NAME
Function
PF Lead Stg1 Level
PF Lag Stg1 Level
PF Stg1 Trip Delay
PF Lead Stg2 Level
PF Lag Stg2 Level
PF Stg2 Trip Delay
Snapshot Events
SIGNAL
POWER FACTOR 1 (2, 3)
BLOCK
PF 1 (2, 3) LAG STG1 OP
PF 1 (2, 3) LEAD STG1 OP
PF 1 (2, 3) LAG STG2 OP
PF 1 (2, 3) LEAD STG2 OP
PF 1 (2, 3) LAG OP
PF 1 (2, 3) LEAD OP
G650 Generator Protection & Control System
DEFAULT VALUE
DISABLED
0.99
0.80
1.0
0.99
0.75
1.0
ENABLED
COMMENT
Input used to block the (1, 2, 3) element externally
(configurable in "Setpoint>Relay
Configuration>Protection Elements")
Output used to indicate lagging power factor value
above stage 1 setting
Output used to indicate leading power factor value
above stage 1 setting
Output used to indicate lagging power factor value
above stage 2 setting
Output used to indicate leading power factor value
above stage 2 setting
Output used to indicate lagging power factor
operation (stage 1 or stage 2)
Output used to indicate leading power factor
operation (stage 1 or stage 2)
5 SETTINGS
STEP RANGE
N/A [DISABLED – ENABLED]
0.01 [0.05 : 0.99]
0.01 [0.05 : 0.99]
0.1 s [0.2 : 300.0]
0.01 [0.05 : 0.99]
0.01 [0.05 : 0.99]
0.1 s [0.2 : 300.0]
N/A [DISABLED – ENABLED]
GEK-113285A