GE L30 Instruction Manual page 256

5.4 SYSTEM SETUP
The number of PMUs and aggregators vary by product, as outlined in the table.
Table 5–13: IMPLEMENTATION BY MODEL NUMBER
MODEL
N60
C60
D60, F60, G60, L30,
L90, T60
The figure shows an example of an N60 using four Logical Device PMUs (Logical Device 2 through 5) and four aggrega-
tors. The control blocks for the aggregators are located in LD1. A 64 char LDName setting is provided.
5
Precise time input to the relay from the international time standard, via either IRIG-B or PTP, is vital for correct syn-
chrophasor measurement and reporting. For IRIG-B, a DC level shift IRIG-B receiver must be used for the phasor
measurement unit to output proper synchrophasor values.
NOTE
Depending on the applied filter, the Synchrophasors that are produced by PMUs are classified as either P (protection) or M
(Measurement) class Synchrophasors. Synchrophasors available within the UR that have no filtering applied are classified
as NONE, which within the standard is classified as PRES OR UNKNOWN under the Calculation Method - ClcMth. Each
Logical Device PMU supports one MxxMMXU, MxxMSQI, PxxxMMXU , PxxxMSQI, NxxMMXU, and one NxxMSQI logical
node.
5-116
NUMBER OF NUMBER OF
PMUS AGGREGATORS
6 4
2 2
1 1
Figure 5–38: N60 EXAMPLE FOR FOUR LOGICAL DEVICE PMUS
Figure 5–39: LOGICAL NODES SUPPORTED IN EACH LOGICAL DEVICE
L30 Line Current Differential System
NUMBER OF ANALOG COMMENT
INPUTS
16 1, 2, 4, or 6 PMUs can be used
16
16
5 SETTINGS
GE Multilin