GE Multilin
B90 Low Impedance Bus Differential System
2-7
2 PRODUCT DESCRIPTION
2.1 INTRODUCTION
2
Figure 2–11: APPLICATION TO 8-FEEDER BUSBARS
2.1.2 ORDERING
A B90 protection system consists of several UR-series B90 IEDs as per user needs and system configuration. At least
three IEDs are required to provide differential and other protection functions for phases A, B, and C of the busbar. The
fourth IED is required for breaker failure functionality and isolator status monitoring as well as extra input and output capa-
bility. A fifth IED is sometimes required for additional input and output capability.
Before ordering the B90 system, an analysis of the required protection and monitoring functions is required. Please refer to
the
UR overview
section in chapter 1 for details of the B90 architecture. Also, detailed analyses of required AC inputs and
input/output contacts must be performed to select appropriate hardware configurations for each of the B90's IEDs.
The B90 Low Impedance Bus Differential System is provided with an option of protecting either 8, 16, or
24-feeder busbars. When ordered as an eight-feeder protection system, the B90 is configurable for up to
eight-input bus differential, regardless of the number of physical current inputs available in the B90 IEDs.
The ordering convention for each of the B90 IEDs is described below.
The relay is available as a 19-inch rack horizontal mount unit and consists of the following modules: power supply, CPU,
CTs and VTs, digital inputs and outputs, and inter-relay communications. Each of these modules can be supplied in a num-
ber of configurations specified at the time of ordering. The information required to completely specify the relay is provided in
the following tables (see chapter 3 for full details of relay modules).
Order codes are subject to change without notice. See the GE Multilin ordering page at
http://www.gedigitalenergy.com/multilin/order.htm
for the latest B90 ordering options.
Table 2–3: B90 ORDER CODES
B90 -
*
*
*
- *
*
* - F
**
- H
**
- L
**
- N
**
- S
**
- U
**
- W/X
**
Full Size Horizontal Mount
BASE
B90
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Base Unit
CPU
T
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RS485 with 3 100Base-FX Ethernet, multimode, SFP with LC
BREAKER
FAILURE
0
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No breaker failure option
1
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With breaker failure option
SOFTWARE OPTIONS
A
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CyberSentry Lvl 1
B
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IEEE 1588
D
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IEEE 1588 and Cybersentry Lvl 1
0
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Four-zone 8-feeder bus protection
1
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Four-zone 16-feeder bus protection
2
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Four-zone 24-feeder bus protection
3
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Single-zone 24-feeder bus protection
4
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Four-zone 8-feeder bus protection with IEC 61850; not available for 9E CPUs
5
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Four-zone 16-feeder bus protection with IEC 61850; not available for 9E CPUs
6
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Four-zone 24-feeder bus protection with IEC 61850; not available for 9E CPUs
7
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Single-zone 24-feeder bus protection with IEC 61850; N/A for 9E CPUs
8
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Four-zone 8-feeder bus protection and breaker failure
9
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Four-zone 16-feeder bus protection and breaker failure
A
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Four-zone 24-feeder bus protection and breaker failure
B
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One-zone 24-feeder bus protection and breaker failure
C
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Four-zone 8-feeder bus protection, IEC 61850, and breaker failure
D
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Four-zone 16-feeder bus protection, IEC 61850, and breaker failure
E
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Four-zone 24-feeder bus protection, IEC 61850, and breaker failure
F
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One-zone 24-feeder bus protection, IEC 61850, and breaker failure
NOTE
Summary of Contents for B90 UR Series
Page 316: ...A 4 B90 Low Impedance Bus Differential System GE Multilin A 1 PARAMETER LISTS APPENDIX A A ...
Page 406: ...B 90 B90 Low Impedance Bus Differential System GE Multilin B 4 MEMORY MAPPING APPENDIX B B ...
Page 436: ...C 30 B90 Low Impedance Bus Differential System GE Multilin C 7 LOGICAL NODES APPENDIX C C ...
Page 446: ...D 10 B90 Low Impedance Bus Differential System GE Multilin D 1 IEC 60870 5 104 APPENDIX D D ...
