GE C30 Instruction Manual page 247

Ur series
Hide thumbs Also See for C30:
Table of Contents

Advertisement

5 SETTINGS
EXAMPLE 1: EXTENDING INPUT/OUTPUT CAPABILITIES OF A C30 RELAY
Consider an application that requires additional quantities of digital inputs or output contacts or lines of programmable logic
that exceed the capabilities of a single UR-series chassis. The problem is solved by adding an extra UR-series IED, such
as the C30, to satisfy the additional inputs/outputs and programmable logic requirements. The two IEDs are connected via
single-channel digital communication cards as shown below.
Figure 5–46: INPUT AND OUTPUT EXTENSION VIA DIRECT INPUTS AND OUTPUTS
Assume contact input 1 from UR IED 2 is to be used by UR IED 1. The following settings should be applied (Direct Input 5
and bit number 12 are used, as an example):
UR IED 1:
DIRECT INPUT 5 DEVICE ID
DIRECT INPUT 5 BIT NUMBER
The
operand of UR IED 2 is now available in UR IED 1 as
Cont Ip 1 On
EXAMPLE 2: INTERLOCKING BUSBAR PROTECTION
A simple interlocking busbar protection scheme can be accomplished by sending a blocking signal from downstream
devices, say 2, 3 and 4, to the upstream device that monitors a single incomer of the busbar, as shown in the figure below.
Figure 5–47: SAMPLE INTERLOCKING BUSBAR PROTECTION SCHEME
Assume that Phase Instantaneous Overcurrent 1 is used by Devices 2, 3, and 4 to block Device 1. If not blocked, Device 1
would trip the bus upon detecting a fault and applying a short coordination time delay.
The following settings should be applied (assume Bit 3 is used by all 3 devices to send the blocking signal and Direct Inputs
7, 8, and 9 are used by the receiving device to monitor the three blocking signals):
UR IED 2:
DIRECT OUT 3 OPERAND
UR IED 3:
DIRECT OUT 3 OPERAND
UR IED 4:
DIRECT OUT 3 OPERAND
UR IED 1:
DIRECT INPUT 7 DEVICE ID
DIRECT INPUT 7 BIT NUMBER
DIRECT INPUT 7 DEFAULT STATE
DIRECT INPUT 8 DEVICE ID
DIRECT INPUT 8 BIT NUMBER
DIRECT INPUT 8 DEFAULT STATE
GE Multilin
= "2"
= "12"
UR IED 2
UR IED 3
: "
"
PHASE IOC1 OP
: "
"
PHASE IOC1 OP
: "
"
PHASE IOC1 OP
: "2"
: "3"
: select "On" for security, select "Off" for dependability
: "3"
: "3"
: select "On" for security, select "Off" for dependability
C30 Controller System
5.7 INPUTS AND OUTPUTS
UR IED 2:
DIRECT OUT 12 OPERAND
.
DIRECT INPUT 5 ON
UR IED 1
BLOCK
UR IED 4
842712A1.CDR
= "Cont Ip 1 On"
5
5-121

Advertisement

Table of Contents
loading

Table of Contents