GE L90 Instruction Manual page 409
Ur series line current differential system
Hide thumbs
Also See for L90:
- Instruction manual (900 pages) ,
- Communications manual (532 pages) ,
- Instruction manual (822 pages)
Table of Contents
Advertisement
5 SETTINGS
i) BROKEN CONDUCTOR DETECTION
PATH: SETTINGS
CONTROL ELEMENTS
BROKEN CONDUCTOR 1
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
Two broken conductor detection elements are provided.
The broken conductor function will detect a transmission line broken conductor condition or a single-pole breaker malfunc-
tion condition through checking the phase current input signals and the I_2 / I_1 ratio. The intention of this function is to
detect a single-phase broken conductor only. As such two-phase or three-phase broken conductors cannot be detected.
GE Multilin
Figure 5–142: OPEN POLE DETECTOR LOGIC (Sheet 2 of 2)
MONITORING ELEMENTS
BROKEN CONDUCTOR 1
FUNCTION: Disabled
BROKEN CONDUCTOR 1
SOURCE: SRC 1
BROKEN CONDUCTOR 1
I2/I1 RATIO:
BROKEN CONDUCTOR 1
I1 MIN: 0.10 pu
BROKEN CONDUCTOR 1
I1 MAX: 1.50 pu
BROKEN CONDUCTOR 1
PKP DELAY: 20.000 s
BROKEN CONDCT 1 BLK:
Off
BROKEN CONDUCT 1
TARGET: Self-reset
BROKEN CONDUCT 1
EVENTS: Disabled
L90 Line Current Differential System
BROKEN CONDUCTOR 1(2)
Range: Disabled, Enabled
Range: SRC 1, SRC 2, SRC 3, SRC 4
Range: 20.0% to 100.0% in steps of 0.1%
20%
Range: 0.05 to 1.00 pu in steps of 0.01
Range: 0.05 to 5.00 pu in steps of 0.01
Range: 0.000 to 65.535 s in steps of 0.001
Range: FlexLogic™ operand
Range: Self-reset, Latched, Disabled
Range: Disabled, Enabled
5.7 CONTROL ELEMENTS
5-263
5
Advertisement
Table of Contents
