GE T60 Instruction Manual page 281

5 SETTINGS
The number of PMUs and aggregators vary by product, as outlined in the table.
Table 5–16: IMPLEMENTATION BY MODEL NUMBER
MODEL NUMBER OF
PMUS
N60 6
C60 2
D60, F60, G60, L30, 1
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.
Figure 5–45: N60 EXAMPLE FOR FOUR LOGICAL DEVICE PMUS
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.
Figure 5–46: LOGICAL NODES SUPPORTED IN EACH LOGICAL DEVICE
GE Multilin
NUMBER OF NUMBER OF ANALOG
AGGREGATORS INPUTS
4 16
2 16
1 16
T60 Transformer Protection System
5.4 SYSTEM SETUP
COMMENT
1, 2, 4, or 6 PMUs can be used
5
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