ECOLOGICAL SUCCESSION Primary Succession Secondary Succession Primary vs. Secondary Succession.
Primary and Secondary Service and System Configurations
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5 Primary and Secondary Service and System Configurations 5.1.0 Introduction 5.1.1 Radial Circuit Arrangements in Commercial Buildings 5.1.2 Radial Circuit Arrangement: Common Primary Feeder to Secondary Unit Substations 5.1.3 Radial Circuit Arrangement: Individual Primary Feeder to Secondary Unit Substations 5.1.4 Primary Radial-Selective Circuit Arrangements 5.1.5 Secondary-Selective Circuit Arrangement (Double-Ended Substation with Single Tie) 5.1.6 Secondary-Selective Circuit Arrangement (Individual Substations with Interconnecting Ties) 5.1.7 Primary- and Secondary-Selective Circuit Arrangement (Double-Ended Substation with Selective Primary) 5.1.8 Looped Primary Circuit Arrangement 5.1.9 Distributed Secondary Network 5.1.10 Basic Spot Network 5.1.0 Introduction In order to provide electrical service to a building or buildings, you must first determine what type of system is available from the utility company or from a pri- vately owned and operated system such as might be found on a college or university campus or industrial or commercial complex, as the case may be. Once this is known, it is important to understand the characteristics of the system—not only voltage, capacity, and available fault current but also the operational, reliability, and relative cost characteristics inherent to the system by virtue of its configuration or arrangement. Knowing the characteristics associated with the system arrange- ment, the most appropriate service and distribution system for the application at hand can be determined. Section 5.1
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Transcript of Primary and Secondary Service and System Configurations
5Primary and Secondary Service and
System Configurations
5.1.0 Introduction5.1.1 Radial Circuit Arrangements in Commercial Buildings5.1.2 Radial Circuit Arrangement: Common Primary Feeder to Secondary Unit
Substations5.1.3 Radial Circuit Arrangement: Individual Primary Feeder to Secondary
Unit Substations5.1.4 Primary Radial-Selective Circuit Arrangements5.1.5 Secondary-Selective Circuit Arrangement (Double-Ended Substation with
Single Tie)5.1.6 Secondary-Selective Circuit Arrangement (Individual Substations with
Interconnecting Ties)5.1.7 Primary- and Secondary-Selective Circuit Arrangement (Double-Ended
Substation with Selective Primary)5.1.8 Looped Primary Circuit Arrangement5.1.9 Distributed Secondary Network5.1.10 Basic Spot Network
5.1.0 Introduction
In order to provide electrical service to a building or buildings, you must firstdetermine what type of system is available from the utility company or from a pri-vately owned and operated system such as might be found on a college or universitycampus or industrial or commercial complex, as the case may be. Once this isknown, it is important to understand the characteristics of the system—not onlyvoltage, capacity, and available fault current but also the operational, reliability,and relative cost characteristics inherent to the system by virtue of its configurationor arrangement. Knowing the characteristics associated with the system arrange-ment, the most appropriate service and distribution system for the application athand can be determined.
Section
5.1
CH05_Hickey 11/14/01 3:35 PM Page 5.1
5.1.1 Radial Circuit Arrangementsin Commercial Buildings
5.2 Section Five
5.1.1
(From IEEE Std. 241-1990. Copyright 1990 IEEE. All rights reserved.)
CH05_Hickey 11/14/01 3:35 PM Page 5.2
Primary and Secondary Service and System Configurations 5.3
5.1.2
5.1.2 Radial Circuit Arrangement: CommonPrimary Feeder to Secondary Unit Substations
(From IEEE Std. 241-1990. Copyright 1990 IEEE. All rights reserved.)
CH05_Hickey 11/14/01 3:35 PM Page 5.3
5.1.3 Radial Circuit Arrangement: IndividualPrimary Feeder to Secondary Unit Substations
5.4 Section Five
5.1.3
(From IEEE Std. 241-1990. Copyright 1990 IEEE. All rights reserved.)
CH05_Hickey 11/14/01 3:35 PM Page 5.4
5.1.4 Primary Radial-Selective CircuitArrangements
Primary and Secondary Service and System Configurations 5.5
5.1.4
(From IEEE Std. 241-1990. Copyright 1990 IEEE. All rights reserved.)
CH05_Hickey 11/14/01 3:35 PM Page 5.5
5.1.5 Secondary-Selective Circuit Arrangement(Double-Ended Substation with Single Tie)
5.6 Section Five
5.1.5
(From IEEE Std. 241-1990. Copyright 1990 IEEE. All rights reserved.)
CH05_Hickey 11/14/01 3:35 PM Page 5.6
5.1.6 Secondary-Selective Circuit Arrangement(Individual Substations with Interconnecting Ties)
Primary and Secondary Service and System Configurations 5.7
5.1.6
(From IEEE Std. 241-1990. Copyright 1990 IEEE. All rights reserved.)
CH05_Hickey 11/14/01 3:35 PM Page 5.7
5.1.7 Primary- and Secondary-Selective CircuitArrangement (Double-Ended Substation withSelective Primary)
5.8 Section Five
5.1.7
(From IEEE Std. 241-1990. Copyright 1990 IEEE. All rights reserved.)
CH05_Hickey 11/14/01 3:35 PM Page 5.8
5.1.8 Looped Primary Circuit Arrangement
Primary and Secondary Service and System Configurations 5.9
5.1.8
(From IEEE Std. 241-1990. Copyright 1990 IEEE. All rights reserved.)
CH05_Hickey 11/14/01 3:35 PM Page 5.9
5.1.9 Distributed Secondary Network
5.10 Section Five
5.1.9
(From IEEE Std. 241-1990. Copyright 1990 IEEE. All rights reserved.)
CH05_Hickey 11/14/01 3:35 PM Page 5.10
5.1.10 Basic Spot Network
Primary and Secondary Service and System Configurations 5.11
5.1.10
(From IEEE Std. 241-1990. Copyright 1990 IEEE. All rights reserved.)
CH05_Hickey 11/14/01 3:35 PM Page 5.11
