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SPS2 circuit breaker family

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SPS2 circuit breaker family

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Table of contents

Siemens quality inside and out 4

SPS2 15 kV – 72.5 kV 6

SPS2 123 kV – 170 kV 8

SPS2 245 kV 10

SPS2 362 kV 12

SPS2 550 kV 14

Common components 16

Independent pole operation (IPO) 20

Specifications 22

Live-tank option 24

Shipment and installation 25

4

The durable dead-tank construction of the SPS2 circuit breaker is designed for reliable, long lasting performance in all types of operating conditions. Siemens is committed to investing in research and development as well as interpreting field experiences in order to bring you a line of circuit breakers that you can rely on under the most demanding situations, with the added ability to meet your needs of system growth and expansion.

Siemens combines the latest in circuit breaker technology with the economies of scale and a streamlined process at our manufacturing plant in Jackson, Mississippi.

Our facility is quality certified to:

ISO 14001:2004

OHSAS 18001:2007

ISO 9001:2008.

The manufacturing process is designed to provide measurable quality and cost containment. To ensure product performance and customer satisfaction, every circuit breaker is tested to ANSI and IEC standards in one of the world’s largest high-voltage laboratories.

Siemens’ high-voltage circuit breakers offer an optimum technical and economical solution for virtually any requirement. Our high-voltage products have low life cycle costs, short commissioning times, and are earthquake resistant and weatherproof.

All of our live- and dead-tank circuit breakers, as well as our gas-insulated switchgear, are equipped with common components. Longevity, reliability, and a broad range of solutions for diverse climate zones around the world distinguish Siemens high-voltage circuit breakers from all others.

Siemens quality inside and out

5

With forty years of experience combined with more than 100,000 breakers installed worldwide, Siemens utilizes the best breaker technology available, providing reliable performance for a wide range of voltage requirements from 15 kV through 800 kV.

Our SPS2 breaker family is not just another breaker. Seismically qualified, each SPS2 rating has been tested to 10,000 mechanical operations.

Global components for all SPS2 circuit breakers include:

The FA spring-spring mechanism

3AP arc-assist interrupter

Rupture disks for each interrupter

Porcelain or composite bushings

Standard provision for up to four CTs per bushing

Tanks meet ASME pressure requirements

Low installation costs

Compact construction

Dead-tank design allows accessibility of all components at safe elevation

Virtually no maintenance.

All components are factory assembled and tested with no required field adjustments.

Why Siemens outperforms

the rest

6

SPS2 15 kV – 72.5 kV circuit breaker

The SPS2 product line begins with the 72.5 kV circuit breaker. The robust design and 40 kA rating make this unit a popular choice for installation at all voltage levels from 15 kV up to 72.5 kV. Siemens sells more 72.5 kV circuit breakers than any other manufacturer year-over-year because of the incredible value we offer to our customers.

The standard 72.5 kV has a compact design and the same user-friendly controls layout that our customers appreciate with every unit they install.

Standard features available:

Spring-spring operator

Up to 4 CTs per bushing

Operation to -40 °C without tank heaters

Gang operated and independent pole operated versions available on common frame.

7

Ratings and specificationsSPS2 15 kV - 72.5 kV

Supplementary specifications voltage

Supplementary specifications current

Supplementary specifications

Identification Ratings Related capabilities

Type

Voltage Insulation Current

Interrupting

time (cycles)

Current values - amperes

Nominal kV class

Rated max kV

Rated voltage range

factor (k)

Rated withstand test voltage

Rated continuous

current (amps, rms)

Rated short circuit

current at rated (kA)

Maximum symmeterical interrupting

capability (kA)

3-sec short time current

carrying capability

(kA)

Closing and latching

capability (kA)

Low freq. (kV, rms)

Impulse (kV, crest)

SPS2- 15.5-31.5 14.4 15.5 1.0 50 110 1200-3500 31.5 3 31.5 31.5 85

SPS2- 15.5-40 14.4 15.5 1.0 50 110 1200-3500 40 3 40 40 108

SPS2- 25.8-20 23.0 25.8 1.0 60 150 1200-3500 20 3 20 20 54

SPS2- 25.8-31.5 23.0 25.8 1.0 60 150 1200-3500 31.5 3 31.5 31.5 85

SPS2- 25.8-40 23.0 25.8 1.0 60 150 1200-3500 40 3 40 40 108

SPS2- 38-20 34.5 38 1.0 80 200 1200-3500 20 3 20 20 54

SPS2- 38-31.5 34.5 38 1.0 80 200 1200-3500 31.5 3 31.5 31.5 85

SPS2- 38-40 34.5 38 1.0 80 200 1200-3500 40 3 40 40 108

SPS2- 48.3-20 46.0 48.3 1.0 105 250 1200-3500 20 3 20 20 54

SPS2- 48.3-31.5 46.0 48.3 1.0 105 250 1200-3500 31.5 3 31.5 31.5 85

SPS2- 48.3-40 46.0 48.3 1.0 105 250 1200-3500 40 3 40 40 108

SPS2- 72.5-20 69.0 72.5 1.0 160 350 1200-3500 20 3 20 20 54

SPS2- 72.5-31.5 69.0 72.5 1.0 160 350 1200-3500 31.5 3 31.5 31.5 85

SPS2- 72.5-40 69.0 72.5 1.0 160 350 1200-3500 40 3 40 40 108

Description Unit SPS2 15.5

SPS2 25.8

SPS2 38

SPS2 48.3

SPS2 72.5

Lightning impluse withstand voltage (BIL)

kV 110 150 200 250 350

Chopped wave (2 µsec)

kV 142 194 258 322 452

Normal frequency

Hz 60 60 60 60 60

Optional frequency

Hz 50 50 50 50 50

Motor voltage (universal)

Vdc 48/125/250 48/125/250 48/125/250 48/125/250 48/125/250

Vac 120/240 120/240 120/240 120/240 120/240

Auxiliary voltage

Vac 120/240 120/240 120/240 120/240 120/240

Trip and close coil rating

Vdc 48/125/250 48/125/250 48/125/250 48/125/250 48/125/250

Description Unit

Rated short circuit current

kA 20 31.5 40

Rated making current kA 20 31.5 40

Closing and latching capability

RMS kA 32 50 64

Peak kA 54 85 108

Capacitance switching

Class C2

Rated overhead line current

A, rms 100

Rated isolated capacitor bank

A, rms 630

Normal operating temperature range

Standard °C -40 to 55

Special °C -50 to 55

Closing time ms 100

Rated reclosing time cycles 12

Rated duty cycle OCO-15S-CO (No derating)

External creep

Standard in 73

Special in 114

External strike to ground

Standard in 23

Special in 35.5

Phase spacing 37.4

SF6 lbs 33

SF6 pressure psig 65 @ 68 °F/20 °C

Trip coils 2

Breaks per phase 1

Seismic withstand IEEE 693

Rated voltage range factor k 1

8

SPS2 123 kV - 170 kV circuit

breaker

The next member of the SPS2 product family includes the 145 kV circuit breaker. With 40, 50, and 63 kA designs available, none of the 145 kV units require capacitors to achieve their kA requirement. This offers a true long-term value by eliminating both the initial additional cost and the potential maintenance expense for replacement of failed capacitors.

Features:

No capacitors needed for 40, 50, or 63 kA

Spring-spring operator.

Customers who added the Siemens 145 kV units to their network benefited from:

Reduced costs through our worry-free spring-spring operator

Dependable arc-assist interrupters

Independence from troublesome capacitors.

9

Ratings and specificationsSPS2 123 kV - 170 kV




Type


Interrupting

time (cycles)


Nominal kV class

Rated max kV

Rated voltage range

factor (k)


Rated continuous

current (amps, rms)

Rated short circuit



capability (kA)

3-sec short time current carrying capability (kA)


capability (kA)

Low freq. (kV, rms)

Impulse (kV, crest)

SPS2-123-20 115 123 1.0 260 550 1200-4000 20 3 20 20 54

SPS2-123-31.5 115 123 1.0 260 550 1200-4000 31.5 3 31.5 31.5 85

SPS2-123-40 115 123 1.0 260 550 1200-4000 40 3 40 40 108

SPS2-123-50 115 123 1.0 260 550 1200-4000 50 3 50 50 135

SPS2-123-63 115 123 1.0 260 550 1200-4000 63 3 63 63 170

SPS2-145-20 138 145 1.0 310 650 1200-4000 20 3 20 20 54

SPS2-145-31.5 138 145 1.0 310 650 1200-4000 31.5 3 31.5 31.5 85

SPS2-145-40 138 145 1.0 310 650 1200-4000 40 3 40 40 108

SPS2-145-50 138 145 1.0 310 650 1200-4000 50 3 50 50 135

SPS2-145-63 138 145 1.0 310 650 1200-4000 63 3 63 63 170

SPS2-170-20 161 170 1.0 365 750 1200-4000 20 3 20 20 54

SPS2-170-31.5 161 170 1.0 365 750 1200-4000 31.5 3 31.5 31.5 85

SPS2-170-40 161 170 1.0 365 750 1200-4000 40 3 40 40 108

SPS2-170-50 161 170 1.0 365 750 1200-4000 50 3 50 50 135

SPS2-170-63 161 170 1.0 365 750 1200-4000 63 3 63 63 170

Description Unit SPS2 123 SPS2 145 SPS2 170


kV 550 650 750

Chopped wave (2 µsec) kV 710 838 968

Normal frequency Hz 60 60 60

Optional frequency Hz 50 50 50

Motor voltage (universal)Vdc 48/125/250 48/125/250 48/125/250

Vac 120/240 120/240 120/240

Auxiliary voltage Vac 120/240 120/240 120/240

Trip and close coil rating Vdc 48/125/250 48/125/250 48/125/250

Description Unit


kA 20 31.5 40 50 63

Rated making current kA 20 31.5 40 50 63


RMS kA 32 50 64 80 101

Peak kA 54 85 108 135 170


Class C2


A, rms 160


A, rms 400


Normal operating temperature range 145 kV/40 kA 145 kV/63 kA


Special °C -40/-50 to 55

Closing time ms 100



External creep

Standard in 131

Special in 144


Standard in 46 46

Special in 53 53

Phase spacing 70.1 71.3

SF6 lbs 58 82


Trip coils 2

Breaks per phase 1



10

SPS2 245 kV circuit breaker

The SPS2 245 kV circuit breaker unit is a perfect product solution for high altitude applications. This breaker has BIL bushings specifically designed for higher altitude considerations.

The 245 kV offers all the same features of the other ratings including the reliable spring-spring operating mechanism. Additionally, it also has 900 or 1050 BIL configurations and SF6 monitoring available in the common or isolated gas systems and is available in two- and three-cycle options. With the 245 kV, customers have the option of using our synchronous design for capacitor or reactor applications.

11

Ratings and specificationsSPS2 245 kV


Type


Interrupting

time (cycles)


Nominal kV class

Rated max kV

Rated voltage range

factor (k)


Rated continuous

current (amps, rms)

Rated short circuit



capability (kA)


carrying capability

(kA)


capability (kA)

Low freq. (kV, rms)

Impulse (kV, crest)

SPS2-245-20 230 245 1.0 425/460 900/1050 1200-4000 20 2/3 20 20 54

SPS2-245-31.5 230 245 1.0 425/460 900/1050 1200-4000 31.5 2/3 31.5 31.5 85

SPS2-245-40 230 245 1.0 425/460 900/1050 1200-4000 40 2/3 40 40 108

SPS2-245-50 230 245 1.0 425/460 900/1050 1200-4000 50 2/3 50 50 135

SPS2-245-63 230 245 1.0 425/460 900/1050 1200-4000 63 2/3 63 63 170



Description Unit SPS2 245


kV 900/1050

Chopped wave (2 µsec) kV 1160

Normal frequency Hz 60

Optional frequency Hz 50

Motor voltage (universal)Vdc 48/125/250

Vac 120/240

Auxiliary voltage Vac 120/240

Trip and close coil rating Vdc 48/125/250

Description Unit


kA 20 31.5 40 50 63



RMS kA 32 50 64 80 101

Peak kA 54 85 108 135 170


Class C2


A, rms 125


A, rms 400





Closing time ms 100



External creep

Standard in 215

Special in 241


Standard in 62

Special in 84

Phase spacing 85.3

SF6 lbs 162


Trip coils 2

Breaks per phase 1



12

As with all Siemens dead-tank, live-tank and gas-insulated switchgear breakers, the SPS2 362 kV uses the same proven 3AP arc-assist interrupter and FA spring-spring drive mechanism. The FA spring-spring operator is designed to be maintenance-free, is rated at two- cycle interruptions, and provides the most reliable closing and re-closing available in the market. Additionally, the SPS2 362 kV is a SF6 gas-insulated dead-tank breaker offering fast and reliable operations at extra high-voltage transmission levels, and can be configured in an independent pole or zero-crossing application.

The SPS2 362 kV offers the following advantages:

63 kA without line-to-ground capacitors

4000 A full load current

5000 A option available.


13

Ratings and specificationsSPS2 362 kV


Type


Interrupting

time (cycles)


Nominal kV class

Rated max kV

Rated voltage range

factor (k)


Rated continuous

current (amps, rms)

Rated short circuit



capability (kA)


carrying capability

(kA)


capability (kA)

Low freq. (kV, rms)

Impulse (kV, crest)

SPS2-362-20 345 362 1.0 555 1300 1200-5000 20 2 20 20 54

SPS2-362-31.5 345 362 1.0 555 1300 1200-5000 31.5 2 31.5 31.5 85

SPS2-362-40 345 362 1.0 555 1300 1200-5000 40 2 40 40 108

SPS2-362-50 345 362 1.0 555 1300 1200-5000 50 2 50 50 135

SPS2-362-63 345 362 1.0 555 1300 1200-5000 63 2 63 63 170





kV 1300





Vac 120/240



1) Design is customizable to meet certain customer requirements

Description Unit


kA 20 31.5 40 50 63



RMS kA 32 50 64 80 101

Peak kA 54 85 108 135 170


Class C2


A, rms 315


A, rms 1200





Closing time ms 65



External creep

Standard in 356

Special in 442


Standard in 103

Special in 120

Phase spacing See 1)

SF6 lbs 385


Trip coils 2 per phase

Breaks per phase 1



14

The SPS2 550 kV circuit breaker provides reliable operation for utility applications at extra high-voltage transmission levels featuring arc-assist interrupters for fast, efficient interruption with two breaks per phase. Both contacts are driven by common mechanical linkage FA5 spring operating mechanism with high speed closing and reclosing.

This breaker is designed for zero-crossing switching and protective duties at 550 kV maximum-rated voltages, 2000, 3000, 4000 and 5500 amperes continuous current and 40, 50 or 63 kA maximum symmetrical interrupting capability.

Shipped with CTs and CT cover installed

High seismic withstand

Breaker poles can be isolated and opened individually

Light-weight design and low-reaction forces reduce foundation requirements and reduce construction space and costs

High-performance interrupter rated 63 kA without external line-to-ground capacitors reduces application engineering concerns

Available plug-and-play control wiring can reduce installation cost and time.


15

SPS2 550 kV Ratings and specifications


Type


Interrupting

time (cycles)


Nominal kV class

Rated max kV

Rated voltage range

factor (k)


Rated continuous

current (amps, rms)

Rated short circuit



capability (kA)


carrying capability

(kA)


capability (kA)

Low freq. (kV, rms)

Impulse (kV, crest)

SPS2-550-20 500 550 1.0 860 1800 1200-5000 20 2 20 20 54

SPS2-550-31.5 500 550 1.0 860 1800 1200-5000 31.5 2 31.5 31.5 85

SPS2-550-40 500 550 1.0 860 1800 1200-5000 40 2 40 40 108

SPS2-550-50 500 550 1.0 860 1800 1200-5000 50 2 50 50 135

SPS2-550-63 500 550 1.0 860 1800 1200-5000 63 2 63 63 170





kV 1800





Vac 120/240



Description Unit


kA 20 31.5 40 50 63



RMS kA 32 50 64 80 101

Peak kA 54 85 108 135 170


Class C2


A, rms 500


A, rms 500

1) Design is customizable to meet certain customer requirements




Special °C NA

Closing time ms 65



External creep

Standard in 595


Standard in 176

Phase spacing See 1)

SF6 lbs 1610


Trip coils 2 per phase

Breaks per phase 2



16

The strength of the SPS2 family is the com-monality of components across the portfolio. Only the physical profile changes in size of the interrupter and operating mechanism for 15 kV to 550 kV applications. The control cabinet design is similar across the complete SPS2 range. This ensures that regardless of the kV class of the breaker, you can expect similar components and layout. This reduces training, spare holdings and eliminates the possibility of errors. Furthermore, adapter plates are offered to match other existing foundations in order to save considerable time and money in the development of new foundations.

Common components

17

Dead-tank special features

The distinguishing feature of dead-tank technology is that the interrupter chamber is in a grounded metal housing. With this arrangement, the SF6 gas insulates the high-voltage live parts of the contact assembly from the housing.

The high-voltage connection is through a NEMA terminal plate and conductor rod assembly that is housed in a hollow SF6-filled porcelain or composite bushing. Current transformers are mounted directly on the bushing.

Dead-tank circuit breakers offer particular advantages if the protection design requires the use of several current transformers per pole assembly. The ability to arrange current transformers on each side of the pole assembly enables protection schemes to be met in a particularly cost-saving manner. Furthermore, it is relatively simple to retrofit current transformers in the field.

As an additional advantage, dead-tank circuit breakers are particularly resistant to earthquakes due to their compact design and low center of gravity.

Arc-assist interrupter

The SPS2 circuit breaker includes the field-proven 3AP arc-assist interrupter. Each interrupter consists of a main contact assem-bly and an arcing contact assembly mounted inside a pole unit housing. During the opening operation, the puffer action in the compression cylinder of the 3AP interrupter is sufficient for low current faults and switch-ing operations. During high current interrup-tions, heat from the arc causes the pressure to rise in the heating volume chamber. The resulting high pressure gas from the heating volume extinguishes the arc. This arc-assist technology, coupled with our true spring-spring operating mechanism, assures that the components are subjected to less stress which results in optimal operating reliability.

Key:

1. Aluminum housing

2. Stationary contact support

3. Nozzle

4. Main contact

5. Arcing contact

6. Heating volume

7. Moving contact support base

8. Compression cylinder.

Dead-tank circuit breakers Arc-assist interrupter

Type SPS2

Electrical data 3-cycle 2-3 -cycle 2-cycle

Rated voltage kV 38 48.3 72.5 123 145 170 245 362 550

Rated power-frequency

withstand voltagekV 80 105 160 260 310 365 425/460 555 860

Rated lightning

impulse withstand

voltage

kV 200 250 350 550 650 750 900/1050 1300 1800

Rated nominal current

up to

A 4000 4000 4000 4000 4000 4000 4000 4000/5000 5000

Rated braking current

up to

kA 40 40 40 63 63 63 63 63 63

1

3

2

4

18

Spring-spring operating mechanism

Siemens has more than 100,000 installations worldwide, which is testament to the reliability of the spring-spring FA mechanism. This mechanism is fully equipped with a closing and opening spring fit within a common housing. The operating mechanism incorporates sealed roller bearings that allow wear-free transitions of forces to ensure a long service life. The charging gear, with its long-wearing spur wheels and its principle of no-load decoupling, is another component that is designed for no maintenance. Low operating mechanism force assures that the transition elements are subjected to less stress, thus resulting in optimal operating reliability.

Rated voltage 48 VDC 125 VDC 250 VDC 115 VAC 230 VAC

Trip coil current (amps) 16 10 5.2 12.0 6.7

Close coil current (amps) 4.6 2.5 1.2 2.5 6.7

Motor run current (amps) 29 23 8 41 11

Control power requirements FA5 mechanism

Spring-charged operating mechanism

Common components

19

3D wiring

In our efforts to provide our customers quality products, Siemens continuously invests in equipment to make the manu-facturing process precise, efficient and consistent. Siemens’ specialized engineering department utilizes 3D technology for the design layout of the control wiring compo-nents for all circuit breakers. This lets design-ers create precise breaker cabinets and com-ponents with the assurance that there will be no interference issues.

Siemens 3D wiring ensures wires are cut to the exact length needed and design engi-neers dictate the routing of wires creating an efficient and clean end product. This also allows Siemens to facilitate an error-free environment by providing a valuable “from-to” wiring list and destinations printed directly on the wires. Utilization of this 3D technology improves reliability and consis-tency, which is evident in the uniform crimp-ing of all lugs, providing a more secure and reliable connection.

When you buy a Siemens circuit breaker you are not just buying a canned product, you are buying a circuit breaker that was custom designed for your needs by a dedicated engineering team, using the latest and most advanced technology available.

This 3D wiring technology provides:

A clean cabinet area free of excess or interfering wiring

Useful “from-to” wire list and markings

A consistent uniform crimping of all lugs.

20

Independent pole operation controllers (IPO)

To ensure product performance and customer satisfaction, the individual pole operation controllers are tested to ANSI and IEC standards in one of the world’s largest high-voltage laboratories.

In conjunction with the Phase synchroniz-ing device (PSD) control unit, IPO controlled switching allows for an individual optimum switching instant to be set for each pole. The transients are thereby reduced to a minimum. For circuit breakers with three independent drives, each pole receives an individual switching command from the PSD control unit.

Advantages of the IPO approach

Increased system reliability as a result of reduced voltage fluctuations and lower harmonic stress

Longer service life of the equipment by reducing the switching over-voltages and inrush currents

Elimination of costly, complex mechanical auxiliary equipment, such as pre-insertion resistors.

This approach is also gaining acceptance for re-engineering of extra high-voltage transmission lines and replacing traditional pre-insertion resistors. For many years these controllers have been delivered all over the world. Siemens dead-tank circuit breakers are particularly well suited for controlled switching due to their superior stability in regard to mechanical operating time and dynamic dielectric behavior, which is a result of its true spring-spring operator design. This design is the standard for all Siemens circuit breakers.

IPO Rating

Independent pole operation (IPO)

Type IPO

Rated voltage kV 72.5 123 145/170 245 362 550

Interrupting time cycle 3 3 3 2 or 3 2 2

Power frequency kV 160 230 275 460 550 860

Lightning impulse withstand

voltagekV 350 550 750 900/1050 1300 1800

Switching impulse withstand

voltage > 300 kVkV 900 1350

Rated current A 1200/3500 1200/4000 1200/4000 1200/4000 4000/5000 5000

Rated short circuit kA 40/50/63 40/50/63 40/50/63 40/50/63/80 63 63

21

Phase synchronizing device (PSD) controlled switching

When switching capacitive and inductive loads, transients occur, resulting in electro-dynamic and dielectric stresses on systems. These stresses can be minimized by the introduction of controlled switching, which can be provided by the Siemens PSD control unit. This unit can significantly reduce wear and tear on the equipment.

Our PSD control unit optimizes the phase relative to the current or voltage of the switching operation of the circuit breaker. Controlled switching takes the opening and closing times of the circuit breaker into account. Commands from the protection sys-tem are passed directly to the circuit breaker. Closing occurs at an optimal phase position. The phase position is selected based on the actual switching duty so that transients can be avoided. When opening small inductive currents, the voltage cycle of the contact separation is such that the contact clearance during interruption is sufficient to prevent re-strike or re-ignition.

This unit offers the following advantages:

Software for parameterization and evaluation

Password protected function access

Switching history

Event history

400 events saved documentation

Graphical overview

Limit value monitoring

Adaptive control (optional)

Compensation of operating times (linear or vectorial) including: temperature, voltage, and pressure

Two modes of operation with two sets of parameters (ON/OFF)

Last four operations saved as oscillogram

Selection of trigger source (leading phase)

Increased system reliability as a result of reduced voltage fluctuations and lower harmonic stress

Longer service life of equipment

Elimination of costly, complex mechanical auxiliary equipment, such as closing resistors.

22

Longer operating life for lower maintenance costs

When considering any circuit breaker, today’s utilities must be concerned not only with initial price and installation, but also with the ongoing costs of ownership. The Siemens SPS2 family of breakers competes in every category. Its low price tag, simple installation and easy maintenance will continue to pay dividends decades into the future.

In addition to reliable performance, our breakers offer a number of special requirements, such as:

Switching capacitors, cables and reactors

Reclosing duty without de-rating interrupting capability

High contamination zones.

Getting the best breaker for your needs

When ordering a SPS2 breaker, specify the following:

1. Breaker type and rating

2. Trip voltage (see ratings section)

3. Close voltage (see ratings section)

4. Motor voltage: 120 VAC, 125 VDC, 240 VAC / 250 VDC and 48 VDC

5. Heater voltage: 115 and 230 VAC

6. BCTs: type, ratio, number, and location

7. Terminals: specify in detail if desired

8. Specifications covering special equipment, accessories, test, etc.

9. SF6 included or not included

10. Phase spacing and electrical control (IPO and live-tank only)

11. Control cables included in cabinet location (IPO and live-tank only).

SPS2 specifications

23

Basic breaker

The standard basic breaker includes:

1. Three-pole SF6 filled outdoor power circuit breaker

2. Galvanized frame

3. Light gray standard color – ANSI 70

4. Six light gray SF6 filled bushings that meet or exceed all application ANSI and NEMA design specifications

5. Relaying accuracy bushing current transformers

6. Trip-free spring operating mechanism

7. Three-stage temperature-compensated SF6 density monitor with integral pressure gauge

8. Twelve-stage auxiliary switch; eight stages for customer use

9. Trip coil and close coil

10. Cabinet heater to prevent condensation

11. Terminal blocks and wiring

12. Operations counter

13. Fused-knife switches

14. Grounding pads

15. Mechanical position indicator

16. Provision for travel recorder attachment

17. Installation tools.

1 ratioMR = Multiple ratioSR = Single ratioDR = Dual ratio

2 accuracyC = Relay accuracyB = Meter accuracy

3 typical ratiosSpecial ratios available upon request

Optional modifications include:

1. Extra BCTs

2. Metering accuracy BCTs

3. Extra creepage bushings

4. Capacitor trip

5. Relays for reclosing or non-reclosing breaker application

6. External pull-to-trip handle

7. Cabinet light and convenience outlet

8. Additional auxiliary switches

9. Dual trip coils

10. Control switch

11. Local and remote switch

12. Thermostat for cabinet heater

13. Composite bushings

14. Phase synchronizing device (PSD)

15. Plug-and-play connectors

16. High seismic design

17. High-creep and high-altitude bushing

18. Suitable down to -40 °C ambient (tank heaters required for operation below -30 °C)

19. Circuit breaker condition monitor

20. Exceed ANSI standards

21. ASME pressure vessel certification for unfired pressure vessels

22. ASME code/test helium leak test system

23. Three-tank construction.

SPS2 specification

24

For live-tank circuit breakers, the interrupter chamber is arranged in the insulator, which can be either porcelain or composite mate-rial. This insulator is at high potential with the voltage level determining the length of the insulators for the interrupter chamber and the insulator column. For higher voltage levels, several interrupter chambers are series-connected on live-tank circuit breakers and installed on the insulator column.

The current transformers are arranged separately, either in front of, or behind the live-tank circuit breakers. With live-tank circuit breakers, no fault currents can occur between the interrupter unit and the hous-ing, and only one current transformer per pole assembly is necessary. Features of our live-tank circuit breakers are the comparatively small gas compartments. The advantage of low gas volume is the reduction in the amount of gas maintenance work. For safe operation of live-tank circuit breakers in seismic regions, the breakers can be mounted on anti-friction structures, a solution that has been tested up to 800 kV.

Live-tank option

Type 3AP1 3AP2 3AT2/3

Electrical data 3-cycle 2-cycle 2-cycle

Rated voltage kV 72.5 123 145 170 245/300 550 145 245 362 550

Rated power-frequency withstand voltage

kV 160 280 310 365 480 860 310 460 555 860

Rated lighting impulse withstand voltage

kV 325 550 650 750 1050 1800 650 1050 1300 1800

Rated nominal current up to A 4000 4000 4000 4000 4000 5000 4000 4000 4000 4000

Rated breaking current up to kA 40 40 40 40 40 63 63 63 63 63

25

All breakers are shipped from our facility in Jackson, Mississippi. Our customer satisfac-tion team will respond within 24 hours of all maintenance or spare parts requests, and our 24 hour emergency number (877-742-3309) is available for around the clock support. We hold in stock all major components, in excess of production needs, to provide the fastest turnaround. Additionally, our dedicated, globally-supported research and develop-ment team is available to answer any special needs.

Providing installation and commissioning on request, we are available 24 hours a day, worldwide, for:

Installation

Commissioning checks

Diagnostics

Spare parts

Failure detection and repair.

Turnkey solutions

Siemens offers turnkey power transmission solutions tailored to individual requirements. We supply all components, including power plant AC or DC transmission systems, and high-voltage interconnected power systems with high-, medium- and low–voltage. We provide a single point of contact, responsible for coordinating the entire project. Turnkey projects reduce the operator’s share in project risks, since Siemens is responsible for delivering a system that is ready for operation.

Shipment and installation

Disclaimer

All statements, technical information and recommendations contained herein are based on information and tests we believe to be reliable. The accuracy or completeness hereof is not guaranteed. Since conditions of use are outside our control, the user should determine the suitability of the product for its intended use and assumes all risk and liability whatsoever in connection herewith.

usa.siemens.com/energy

Published by and copyright © 2012:Siemens AGEnergy SectorFreyeslebenstrasse 191058 Erlangen, Germany

Siemens Energy, Inc.444 Highway 49 SouthRichland, MS 39218+1 (800) 347-6659

For more information, please contact:Telephone: +1 (919) 365-2200Toll-free: +1 (800) 347-6659

Order No. E50001-W630-A218-X-76USPrinted in USATF 3001 BR 1112.25

All rights reserved. Trademarks mentioned in this document are the property of Siemens AG, its affiliates, or their respective owners.

Subject to change without prior notice. The information in this document contains general descriptions of the technical options available, which may not apply in all cases. The required technical options should therefore be specified in the contract.

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