GE L60 Instructions Manual page 347

Line phase comparison system
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CHAPTER 5: SETTINGS
In this application, apply the following settings. For UR-series IED 1:
DIRECT OUTPUT DEVICE ID: "1"
DIRECT I/O CH1 RING CONFIGURATION: "Yes"
DIRECT I/O CH2 RING CONFIGURATION: "Yes"
For UR-series IED 2:
DIRECT OUTPUT DEVICE ID: "2"
DIRECT I/O CH1 RING CONFIGURATION: "Yes"
DIRECT I/O CH2 RING CONFIGURATION: "Yes"
For UR-series IED 3:
DIRECT OUTPUT DEVICE ID: "3"
DIRECT I/O CH1 RING CONFIGURATION: "Yes"
DIRECT I/O CH2 RING CONFIGURATION: "Yes"
In this configuration the following delivery times are expected (at 128 kbps):
IED 1 to IED 2: 0.2 of power system cycle
IED 1 to IED 3: 0.5 of power system cycle
IED 2 to IED 3: 0.2 of power system cycle
In this scheme, IEDs 1 and 3 do not communicate directly. IED 2 must be configured to forward the messages as explained
in the Inputs and Outputs section. Implement a blocking pilot-aided scheme with more security and, ideally, faster
message delivery time. This is accomplished using a dual-ring configuration as shown here.
Figure 5-65: Dual-channel closed loop (dual-ring) configuration
In this application, apply the following settings. For UR-series IED 1:
DIRECT OUTPUT DEVICE ID: "1"
DIRECT I/O CH1 RING CONFIGURATION: "Yes"
DIRECT I/O CH2 RING CONFIGURATION: "Yes"
For UR-series IED 2:
L60 LINE PHASE COMPARISON SYSTEM – INSTRUCTION MANUAL
Figure 5-64: Single-channel open loop configuration
PRODUCT SETUP
5
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