GE L90 Instruction Manual page 361

5 SETTINGS
SETTINGS
Function
Enabled = 1
Disabled = 0
AND
Block
Off = 0
SETTING
Dead Source Select
None
LV1 and DV2
DV1 and LV2
DV1 or DV2
DV1 xor DV2
DV1 and DV2
CALCULATE
Magnitude V1
SETTING
Angle Φ1
V1 Source
Frequency F1
= SRC 1
CALCULATE
Magnitude V2
SETTING
Angle Φ2
V2 Source
Frequency F2
= SRC 2
GE Multilin
SETTING
Dead V1 Max Volt
V1 ≤ Maximum
XOR
SETTING
Dead V2 Max Volt
OR
V2 ≤ Maximum
SETTING
Live V1 Min Volt
AND
V1 ≥ Minimum
SETTING
Live V2 Min Volt
AND
V2 ≥ Minimum
SETTING
Max Volt Diff
Calculate
I V1 – V2 I = V Δ
SETTING
Max Angle Diff
Calculate
I 1 – 2 I = Φ Φ Δ Φ
SETTINGS
Max Freq Diff
Freq Hysteresis
Calculate
I F1 – F2 I = F Δ
Figure 5–124: SYNCHROCHECK SCHEME LOGIC
L90 Line Current Differential System
5.7 CONTROL ELEMENTS
AND
AND
AND
AND
AND
AND
AND
AND
OR
AND
AND
ΔV ≤ Maximum
AND
ΔΦ ≤ Maximum
ΔF ≤ Maximum
FLEXLOGIC OPERAND
SYNC1 V2 ABOVE MIN
FLEXLOGIC OPERAND
SYNC1 V1 ABOVE MIN
FLEXLOGIC OPERAND
SYNC1 V1 BELOW MAX
FLEXLOGIC OPERAND
SYNC1 V2 BELOW MAX
FLEXLOGIC OPERANDS
SYNC1 DEAD S OP
SYNC1 DEAD S DPO
FLEXLOGIC OPERANDS
SYNC1 CLS OP
OR
SYNC1 CLS DPO
5
FLEXLOGIC OPERANDS
SYNC1 SYNC OP
SYNC1 SYNC DPO
SYNCHROCHECK 1
ACTUAL VALUE
Synchrocheck 1 V Δ
Synchrocheck 1 ΔΦ
Synchrocheck 1 F Δ
827076AB.CDR
5-225