GE L30 Instruction Manual page 324
Line current differential
system
ur series
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- Instruction manual (702 pages) ,
- Communications manual (532 pages) ,
- Instruction manual (667 pages)
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5.6 GROUPED ELEMENTS
•
NEUTRAL DIR OC1 FWD LIMIT ANGLE: This setting defines a symmetrical (in both directions from the ECA) limit
angle for the forward direction.
•
NEUTRAL DIR OC1 FWD PICKUP: This setting defines the pickup level for the overcurrent unit of the element in the
forward direction. When selecting this setting it must be kept in mind that the design uses a 'positive-sequence
restraint' technique for the "Calculated 3I0" mode of operation.
•
NEUTRAL DIR OC1 REV LIMIT ANGLE: This setting defines a symmetrical (in both directions from the ECA) limit
angle for the reverse direction.
•
NEUTRAL DIR OC1 REV PICKUP: This setting defines the pickup level for the overcurrent unit of the element in the
reverse direction. When selecting this setting it must be kept in mind that the design uses a positive-sequence restraint
technique for the "Calculated 3I0" mode of operation.
5
5-184
Figure 5–72: NEUTRAL DIRECTIONAL OVERCURRENT LOGIC
L30 Line Current Differential System
5 SETTINGS
GE Multilin
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