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CHANCE CENTRALIA, MISSOURIJANUARY 2012

10DDD

HUBBELL

Power Systems Printed in USA

NOTE: Hubbell has a policy o continuous product improvement. We reserve the right to change design and specifcations without notice.

Sect

10D

Copyright 2011 & 2012 Hubbell Incorporated 210 North Allen Street Centralia, MO 65240-1395 USA

Type PRS

Programmable Resettable SectionalizerSingle-Phase

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Power Systems

Type PRS Programmable Resettable SectionalizerThe Programmable Resettable Sectionalizer (Type PRS)is a device which has built-in intelligence to discriminatebetween temporary (transient) and permanent aults ondistribution systems. It operates in conjunction with aback-up automatic circuit recloser or a reclosing circuitbreaker. It is specifcally designed or the protection

o single-phase lateral lines. When installed at thebeginning o a lateral, it virtually eliminates nuisanceoutages. Its unctional concept and design greatlyimprove system coordination.

Traditionally, the individual laterals are protected byexpulsion-type used cutouts. These cutouts are intendedto operate only during a permanent ault on the lateralby careully coordinating the use links with the time-current characteristics o the upstream automatic circuitrecloser or reclosing circuit breaker. Unortunately,coordination between use links and upstream automaticcircuit reclosers is unachievable above a ew thousandamperes. Coordination, i achieved on paper, can easilychange as the ault current increases due to largercapacity acilities, addition o larger substations orreconductoring. Errors in re-using is another way thatsystem coordination can be lost.

A sectionalizer is a protective device which has no time-current characteristics. With no use curve to intersectrecloser time-current characteristics, the coordinationrange is extended to the maximum interrupting rating othe upstream protective device (Figure 1).

This practical unction makes the sectionalizer an idealdevice or application on single-phase laterals whereavailable ault currents make coordination unachievablewith uses. Electronic resettable sectionalizers providethe utility with an economical and easily retrofttablemethod o enchancing protection o the distribution

system. An electronic resettable sectionalizer installedat the start o a lateral, in place o a use, can greatlyenhance system coordination service continuity andreliability at reduced costs.

Figure 1. Addition o the CRS eliminates the use curve and extends the coordination range.

FUSE CURVE (25T)

RECLOSERMINIMUMTRIP

RECLOSERFASTCURVE

COORDINATION

RANGE

100 800

MAXIMUMCOORDINATIOPOINT

RECLOSERSLOW CURVE

CURRENT

Traditional Coordination

T

IME

T

IME

RECLOSER

MINIMUM

TRIP

RECLOSER

FAST

CURVE

100

RECLOSER

SLOW CURVE

COORDINATION

RANGE

Coordination with Type PRS

CURRENT

The Type PRS electronic sectionalizer comprises twomajor components: A standard cutout mounting andan electronic module. The design and construction othe Type PRS are such as to enhance reliability andcoordination o the distribution system. The electronicsectionalizer module fts into the standard mounting

o a Chance Type C and S&C Type XS cutout. Thisinterchangeability reduces the cost o retroft installation.

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Power Systems

Operation

The power required or the logic circuit o the Type PRSelectronic sectionalizer is obtained rom the built-incurrent transormer. When a ault occurs, which exceedsthe minimum actuating current o the sectionalizer, thelogic circuit will power-up. The upstream recloseropens the circuit causing the line current to all below thedead line threshold. The logic circuit recognizes thisas a count and stores this occurrence in its memory ortwo minutes. In doing so, the Type PRS merely counts

the backup reclose operations.

Ater a predetermined number o such operations, theType PRS isolates the circuit while the back-up recloseris in the open position. The recloser is then allowed toclose, restoring service to the unaulted sections o thesystem. I the ault is temporary and is cleared beorethe sectionalizer count reaches the predeterminednumber, the sectionalizer remains closed and resets to itsoriginal state ater its reset time expires.

Drop-open operation is the same or both types o the PRSelectronic sectionalizer: Standard (let) and Loadbreak

(right, with Arc Chute interrupter). See ollowing pages orspecifcations and ordering inormation.

Application

The Type PRS electronic

sectionalizer is best suited for

use in the following applications:

Locations where fusecoordination is difcult to

achieve

Areas with insufcient load to

justify investments in apparatussuch as reclosers

Remote locations prone to

transient faults caused by faunaand/or ora

SAIDI improvements

Benets

Improves system reliability

Distinguishes between

permanent and transient faults

to reduce outages

Programmable parameters:Counts, actuating current, reset

time

One programmable unit to meet

all needs per specic voltage

class

Historical data storage for

system overview and analysis

Resettable

For Specications,

see following pages.

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Power Systems

System Voltage:The sectionalizer must have a voltage rating equal to or

greater than the system voltage.Continuous Current:

The sectionalizer must have a continuous current ratingequal to or greater than the anticipated system loadcurrent plus overload.

Where hydraulic reclosers are used, the continuouscurrent rating o the sectionalizer is typically equal tothe continuous current rating o the upstream automaticcircuit recloser.

Minimum Actuating Current:

The minimum actuating current o sectionalizers shouldbe 80% o the phase minimum trip o the source sidesingle-phase automatic circuit recloser (ACR). Where

three-phase reclosers or circuit breakers are used, a usermay want to coordinate sectionalize actuating currentwith the ground trip rating.

Where hydraulic reclosers are used, this is easilyaccomplished by matching the sectionalizer and the

Table A. Recloser/sectionalizer coordination.

Minimum Actuating

Current,Amps 10%

2440

5680

112160224

320

Continuous

Current,Amps

1525

3550

70100140

200

Recloser

Minimum Trip,

Amps

30

5070

100

140200280

400

Typical Sectionalizer Ratings

Type PRS Programmable ResettableElectronic Sectionalizer

Where sectionalizers are used in series, the downstreamsectionalizer should have one less count than theupstream sectionalizer (Figure 3).

Figure 3. Coordination o sectionalizersin series.

PRS

PRS

Number of Counts:

The sectionalizer should be set to operate in at leastone less count than the backup recloser. Example: a4-shot recloser would require a maximum o a 3-count

sectionalizer downstream (Figure 2, line A).In case o a 2-ast/2-slow reclose setting, a 2-countsectionalizer may be used to reduce the number orecloser operations (Figure 2, line B).

Figure 2. Typical distribution system with Type PRStwo- and three-count electronic resettable sectionalizers.

PRS

PRS

PRS

PRS

PRS

reclosers continuous current ratings. The sectionalizersminimum actuating current is 160% o its continuous

current rating and the hydraulic reclosers phase pick-upis 200% o its continuous current rating (160/200=.80).(Table A).

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For Catalog Number System,

see following pages.

Technical Specications

Rated Power Frequency 60 Hz/50 HzRated Voltage (BIL) 15kV (110kV BIL)

27kV (125kV BIL)

38kV (150/170kV BIL)

Rated Continuous Current 300 Amps

Minimum

Actuating Current

Programmable between

10 A and 480 A

Number of Counts: Programmable for 1, 2, 3

or 4 counts

Reset time: Programmable, 30 seconds

to 300 seconds

with resolution of 1 second

Inrush detection time Less than 1 cycle

Types of inrush currents

detected:

Symmetrical and

Asymmetrical

Method of inrush currents

detection:

Fourier Analysis (FFT)

Deadline detection: Below 300 mA

Total execution time: 100 msec ( 20 msec)

Short time current withstand,

15 cycle: 8600 Amps Sym.

1 second: 4000 Amps Sym.

3 seconds: 3200 Amps Sym.

10 seconds: 2500 Amps Sym.

Momentary current rating: 12,000 Amps. Asym.

*Current measurement accuracy: 5%

Temperature range: -40C to +60C

Maximum Thermal Rating: 300 A continuous current

Surge current withstand 65KA, per ANSI C37.63

Electromagnetic interference per ANSI C37.63

Radio frequency interference per ANSI C37.90.2

USB port Rated IP68

* With 5% accuracy, i the unit is programmed or 50 A actuatingcurrent, then the unit will pick-up the count at 52.5 A and abovebut ignore a count at 47.5 A and below.

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Programming

Programming o the unit has been simplifed with the

use o Hubbells programming sotware package. Simplyconnect the USB cable provided into the USB port on

the bottom o the unit and then into a computer with the

provided sotware. Provide the inputs or the upstreamdevice and the sotware will provide suggested settings

which the user can accept or override.

Event Log

The programmable sectionalizer contains onboard memory

storage that will record the last 8 events the unit has

seen. Users will be able to download the event log via theUSB port and have access to the measured ault current,

number o counts, and deadline current.

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Silver-platedtop contact

Nickel plated

copper tube

Electronics

Hookstickring

Lowertube casting

LatchingDevice

Uppertube casting

Hookstickring

Trunnion

Lower contact

USB port


USB CableCat. No. PSC7400177

(must order separately)

POLYMER Cutout

Catalog Number System

CP7

4 = Non-Loadbreak

5 = Loadbreak

Position 3:Cutout Type

4 00 1 BPP

Position 9:Cutout Terminal ConnectorsP = Parallel-grooveE = Small eyeboltL = Large eyeboltT = Electronic Module Only

L

Examples:

To order 27kV Polymer cutout programmable sectionalizer with extended

bracket and large eyebolt connectors = CP74002PPLX. To order 27kV programmable sectionalizer module only = C74002PPT.

To order programmable sectionalizer module only, replace "CP7" with "C7"followed by selections for Positions 3 through 9.

Universal Cutout ToolIdeal or use with Standard ElectronicSectionalizer to easily lit out, place, *openand close. Inverted, secure method alsofts 100 amp use holders o ABB, Chance,S&C cutouts.

Cat. No. PSC4033484 (Wt. 4 oz.)See Tools Catalog Section 2100.*When opening a cutout, follow all

work rules and OSHA regulations.

Not for use with Loadbreak cutouts.

Position 10:Cutout Bracket

Z = No bracketB = NEMA B bracketD = D bracketX = Extended bracketBlank = Electronic Module Only

1 = 15kV, 110kV BIL

2 = 27kV, 125kV BIL(Non-loadbreak only)

15/27kV, 125kV BIL(Loadbreak only)

Position 6:Cutout Insulation Level

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Power Systems

Silver-platedtop contact

Nickel plated

copper tube

Electronics

Hookstickring

Lowertube casting

LatchingDevice

Uppertube casting

Hookstickring

Trunnion

Lower contact

USB port


USB CableCat. No. PSC7400177

(must order separately)

PORCELAIN Cutout

Catalog Number System

C7

4 = Non-Loadbreak

5 = Loadbreak

Position 3:Cutout Type

4 00 1 BPP

Position 9:Cutout Terminal ConnectorsP = Parallel-grooveE = Small eyeboltL = Large eyeboltT = Electronic Module Only

L

Position 10:

Cutout BracketZ = No bracketB = NEMA B bracketD = D bracketX = Extended bracket

Blank = Electronic ModuleOnly

1 = 15kV, 110kV BIL

2 = 27kV, 125kV BIL (Non-loadbreak only)

15/27kV, 125kV BIL (Loadbreak only)



Position 6:Cutout Insulation Level

Universal Cutout ToolIdeal or use with Standard Electronic

Sectionalizer to easily lit out, place, *openand close. Inverted, secure method alsofts 100 amp use holders o ABB, Chance,S&C cutouts.

Cat. No. PSC4033484 (Wt. 4 oz.)

See Tools Catalog Section 2100.*When opening a cutout, follow all

work rules and OSHA regulations.

Not for use with Loadbreak cutouts.

Examples:

To order 38kV, 170kV BIL Porcelain cutout programmable sectionalizer with

extended bracket and large eyebolt connectors = C74006PPLX.

To order 38kV, 170kV BIL programmable sectionalizer module only = C74006PPT.

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Accessories

Catalog No.T7001325T7001326T7001327

Terminal Connectors

Min. Order Qty.

101010

Description

Parallel-Groove Clamp, tin-plated bronze or No. 6 solid thru 4/0 ACSR or 250 kcmil strandedSmall Eyebolt or No. 8 solid thru 2/0 strandedLarge Eyebolt or No. 6 solid thru 4/0 ACSR or 250 kcmil stranded

C2060283

C2060280C2060299C2060632

Mounting Brackets

NEMA Heavy Duty B Bracket with 11/2" captive bolt or crossarm mounting

Extended Crossarm Bracket (Horizontal section is 25

/8" longer than NEMA B bracket)D Pole Mounting BracketCutout/Arrester Bracket complete with carriage bolts and backstrap

Mounting Bracket Dimensions

Wt. (lb./kg.)0.33 / 0.150.16 / 0.070.40 / 0.14

2.84 / 1.29

3.75 / 1.707.67 / 3.484.00 / 1.81

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