GE L30 Instruction Manual page 355

CHAPTER 5: SETTINGS
Any changes to the L30 power system settings change the protection system configuration. As such, the 87L
protection at all L30 protection system terminals must be temporarily disabled to allow the relays to acknowledge
the new settings.
— This setting is the number of terminals of the protected line.
NUMBER OF TERMINALS
— This setting corresponds to the communications module installed. If the relay is applied on two
NUMBER OF CHANNELS
terminal lines with a single communications channel, select "1." For a two-terminal line with a second redundant channel
for increased dependability, or for three terminal line applications, select "2."
CHARGING CURRENT COMPENSATION
of current phasors. The voltage signals used for charging current compensation are taken from the source assigned with
the
CURRENT DIFF SIGNAL SOURCE 1
source. The figure shows possible configurations.
L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL
ZERO SEQ CAPACITIVE

REACTANCE: 0.100 kΩ
ZERO SEQ CURRENT

REMOVAL: Disabled
LOCAL RELAY ID

NUMBER: 0
TERMINAL 1 RELAY ID

NUMBER: 0
TERMINAL 2 RELAY ID

NUMBER: 0
CHNL ASYM COMP:

Off
BLOCK GPS TIME REF:

Off
MAX CHNL ASYMMETRY:

1.5 ms
ROUND TRIP TIME

CHANGE: 1.5 ms
LOCAL GPS TROUBLE:

Off
 IN-ZONE

 TRANSFORMER
— This setting enables and disables the charging current calculations and corrections
setting. As such, it is critical to ensure that three-phase line voltage is assigned to this
Range: 0.100 to 65.535 kΩ in steps of 0.001
Range: Disabled, Enabled
Range: 0 to 255 in steps of 1
Range: 0 to 255 in steps of 1
Range: 0 to 255 in steps of 1
Range: FlexLogic operand
Range: FlexLogic operand
Range: 0.0 to 10.0 ms in steps of 0.1
Range: 0.0 to 10.0 ms in steps of 0.1
Range: FlexLogic operand
See page 5-146
SYSTEM SETUP
5
5-141