GE L30 Instruction Manual page 246

5.4 SYSTEM SETUP
Firmware version 7.0 allows the N60 to support a maximum of four Logical Device PMUs (Logical Device 2 through 5) and
four aggregators (located in Logical Device 1 (LD1)), while other UR family members support one PMU and only one
aggregator. The control blocks for the aggregators are located in LD1. A 64 char LDName setting is provided, see figure
below..
5
The specifics of implementation by model number is summarized in the table below.
Table 5–10: IMPLEMENTATION BY MODEL NUMBER
MODEL
N60
D60, F60, G60, L30,
L90, T60
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
5-110
Figure 5–38: N60 SUPPORT FOR FOUR LOGICAL DEVICE PMUS
NUMBER OF NUMBER OF
PMUS AGGREGATORS
4 4
1 1
L30 Line Current Differential System
NUMBER OF ANALOG COMMENT
INPUTS
16 1, 2, or 4 PMUs can be used
16
5 SETTINGS
GE Multilin