101 Kuhlman Blvd., Versailles, KY 40383 • Phone (800) 950-6966 • FAX (859) 873-3316 • www.kuhlman.com �

www.kuhlman.com June 2007

EngineeredDesigns

PS–981/PH–982 Current TransformerIndoor/Outdoor 600V, 10kV BIL, Single, Dual & Multi Ratios

Molded Resin, Window Type, Metering/Relaying

applicationThe PS-981 / PH-982 outdoor “Slip-Over” / ACCUSlipTM current transformer is a 600 volt, 10kV BIL rated unit and designed to fit over a variety of specified bushing sizes. This unit can be applied over higher rated system voltages provided sufficient insulation is available on the point of application. Primary current ratios are available from 200:5 to 5000:5 at 60 Hertz (Hz) with a Rating Factor of up to 4.0. This unit is ideal for old electrical substation equipment with no internal space for BCT’s. This dry-type, solid-cast CT will operate with high accuracy for metering or relay applications. mechanical descriptionThe core and coil assembly is wound and encapsulated in a molded cast resin with various window sizes from 6” up to 41”. The secondary terminals are ¼”-20 studs with associated hard-ware located inside a removable terminal box with two (2) 1” NPT conduit hubs.

accuracy performanceThe PS-981 can provide up to a 0.3 Class accuracy for metering with burdens of B0.1 to B1.8 and up to C800 for some relay applications (see specific ratings on pages 8-13). The transformer is accurate through its Rating Factor, and can be used continuously to this level. The PH-982 will operate with 0.15 Class accuracy for metering with burdens of B0.1 to B1.8 (see specific ratings on page 14). The transformer is accurate through its Rating Factor, and can be used continuously to this level.

mountingThe PS / PH is designed for mounting over the bushings of a power transformer, circuit breaker or cable terminator (pothead). The unit can be mounted in three basic methods (see page 6 of the Engineered Designs Section):

MOUNTING RESIN PADS - 3 ½” diameter by ¼“ thick resin pads can be adhered to the CT bottom to prevent water welling with the CT placed directly onto the unit surface. This is the easiest to install and is the suggested method for CT application to flat surfaces with no obstructions. If a ground shield is used, it can be fastened to the CT top with silicone RTV adhesive.

UNIVERSAL MOUNTING BRACKETS - Top and bottom clamps hold the CT while the threaded support bolts provide vertical ad-justment. The threaded bolts can be tack welded to the electri-cal equipment cover. This is the most commonly used mounting method since it provides obstruction clearance and can be used on flat or radial surfaces and vertical or angled bushings. If a ground shield is used, it can be secured by the top brackets.

CUSTOM “Z” BRACKETS - “Z” brackets can be used on bushings, cable terminators (potheads) and other applications when the other methods are not practical. A special form requires the user to supply data to Kuhlman engineering upon which to design the brackets. It is important that all the required information is supplied. “Z” Brackets can be used on vertical or angled bushings. Top brackets or an RTV adhesive is required when installing a ground shield.

A ground shield should be used on the unit as it is normally mounted in an area of high lightning incidence, the strike-over zone of the bushing or close to the bottom of the porcelain. The ground shield lead should be routed on the same side of the CT where the mounting hardware is located (see Figures 1, 2 & 3).

With the countless physical layouts of transformers, breakers, pot-heads, etc…in use today, many obstructions can be encountered making CT mounting difficult (see Figure 4).

To assure correct electrical and mechanical clearances, bushing and apparatus drawings, pictures, and/or measurements should be provided (see page 7 of the Engineered Designs Section) for sizing slipover current transformers at the time of quotation.

testingThe unit is individually tested per the IEEE C57.13 standard, including dielectric tests, accuracy and polarity.

optionsThe unit can be offered in single, dual or multiple core designs. Through careful calculation, steel selection and testing, existing current transformer characteristics can be matched. Existing characteristic curve would be required. Contact factory for other needs.

�101 Kuhlman Blvd., Versailles, KY 40383 • Phone (800) 950-6966 • FAX (859) 873-3316 • www.kuhlman.com

www.kuhlman.comJune 2007

EngineeredDesigns PS–981/PH–982 Current Transformer

HOW TO ORDER

For typical sizes, refer to tables for Slipover CTs in relaying and metering sections. For approximate ACCUSlipTM sizes, see table on page 14. When ordering Slipover CTs, include the following information:

1. Minimum inside diameter (ID) - ____________ in[mm] 2. Maximum outside diameter (OD) - ____________ in[mm] 3. Maximum allowable height (HT) - ____________ in[mm] 4. Current ratio and taps, if any - ____________ (:5A or :1A | SR, DR, MR) 5. Number of Cores - ____________ (1, 2 or 3) 6. Accuracy and burden requirements, for example, Metering - ____________ (0.3 B0.1 thru B1.8) High Accuracy - ____________ (0.15, see ACCUSlipTM table on page 14) Relaying - ____________ (C100, C200, C400, or C800 or other) If IEC ratings, list class and burden - ____________ (e.g.,class 0.2-20 VA, 5P20-40 VA) 7. Continuous Rating Factor - ____________ (standard is RF=2.0) 8. Frequency - ____________ (standard is 60 Hz) 9. Conduit Box Hub Size - ____________ (standard is 1” NPT) NOTE – Kuhlman Electric offers many mounting options for Slipover CTs (see page 6 for diagrams). Units are custom manufactured to customer specifications. Contact factory to dicuss other options.

101 Kuhlman Blvd., Versailles, KY 40383 • Phone (800) 950-6966 • FAX (859) 873-3316 • www.kuhlman.com �

www.kuhlman.com June 2007

EngineeredDesignsPS–981/PH–982 Current Transformer

NOTE: OUTLINES ARE FOR REFERENCE ONLY. CONTACT FACTORY FOR ACTUAL DESIGN DRAWINGS.

�101 Kuhlman Blvd., Versailles, KY 40383 • Phone (800) 950-6966 • FAX (859) 873-3316 • www.kuhlman.com

www.kuhlman.comJune 2007

EngineeredDesigns PS–981/PH–982 Current Transformer

NOTE: OUTLINES ARE FOR REFERENCE ONLY. CONTACT FACTORY FOR ACTUAL DESIGN DRAWINGS.

NOTES: Ground Shields are ⅛” thick.ID OD Cat No. ID OD Cat No. Brackets come in pairs, top and bottom. Bracket Kit # Brackets Bracket Kit Weight6 16 PGS-0616 22 32 PGS-2232 When steel is specidified, galvanized is standard. Plain stainless 150-0305-XXX per Kit Material Limit, lbs8 18 PGS-0818 24 34 PGS-2434 steel may be substituted. 901 3 Aluminum 200

10 20 PGS-1020 26 36 PGS-2636 Rods are 5/8-11 x 14" galvanized steel bolt-arms with standard 910 3 Stainless Steel 30012 22 PGS-1222 28 38 PGS-2838 galv. nuts. Flat and lock washers are stainless steel. Longer 902 4 Aluminum 27514 24 PGS-1424 30 40 PGS-3040 bolt lengths are available in stainless steel - Consult Factory 906 4 Stainless Steel 47516 26 PGS-1626 32 42 PGS-3242 903 6 Aluminum 35018 28 PGS-1828 34 44 PGS-3444 For a Set of (4) ¼” thick Resin Pads for use under a CT mounting 904 6 Stainless Steel 65020 30 PGS-2030 36 46 PGS-3646 directly upon a power transformer cover, specify 123-0095-904. 905 8 Stainless Steel 850

918 10 Stainless Steel 1000

Ground Shields Universal Slip-Over Mounting Bracket Kits

101 Kuhlman Blvd., Versailles, KY 40383 • Phone (800) 950-6966 • FAX (859) 873-3316 • www.kuhlman.com �

www.kuhlman.com June 2007

EngineeredDesignsPS–981/PH–982 Current Transformer

�101 Kuhlman Blvd., Versailles, KY 40383 • Phone (800) 950-6966 • FAX (859) 873-3316 • www.kuhlman.com

www.kuhlman.comJune 2007

EngineeredDesigns PS–981 Current Transformer

C25 P061645S5005020 4.50 125 P081845S5005020 4.50 145 P102045S5005020 4.50 180 P122242S5005020 4.25 190C50 P061670S5005050 7.00 230 P081870S5005050 7.00 270 P102070S5005050 7.00 320 P122270S5005050 7.00 350C50 P061645S1015050 4.50 125 P081845S1015050 4.50 145 P102045S1015050 4.50 180 P122242S1015050 4.25 190

C100 P061670S1015100 7.00 230 P081870S1015100 7.00 270 P102070S1015100 7.00 320 P122270S1015100 7.00 350C50 P061635S2015050 3.50 85 P081835S2015050 3.50 90 P102035S2015050 3.50 100 P122235S2015050 3.50 110

C100 P061645S2015100 4.50 125 P081845S2015100 4.50 140 P102045S2015100 4.50 165 P122242S2015100 4.25 175C200 P061670S2015200 7.00 200 P081870S2015200 7.00 250 P102070S2015200 7.00 275 P122270S2015200 7.00 310C100 P061630S4015100 3.00 80 P081830S4015100 3.00 85 P102030S4015100 3.00 95 P122230S4015100 3.00 125C200 P061642S4015200 4.25 110 P081842S4015200 4.25 135 P102042S4015200 4.25 155 P122242S4015200 4.25 175C400 P061670S4015400 7.00 240 P081870S4015400 7.00 250 P102067S4015400 6.75 275 P122270S4015400 7.00 300C200 P061635S6015200 3.50 90 P081835S6015200 3.50 100 P102035S6015200 3.50 120 P122235S6015200 3.50 135C400 P061650S6015400 5.00 145 P081850S6015400 5.00 160 P102040S6015400 5.00 195 P122250S6015400 5.00 220C800 P061682S6015800 8.25 185 P081882S6015800 8.25 230 P102082S6015800 8.25 325 P122280S6015800 8.00 375C200 P061630S8015200 3.00 75 P081830S8015200 3.00 85 P102030S8015200 3.00 100 P122230S8015200 3.00 110C400 P061642S8015400 4.25 110 P081842S8015400 4.25 140 P102042S8015400 4.25 160 P122242S8015400 4.25 175C800 P061670S8015800 7.00 155 P081870S8015800 7.00 230 P102070S8015800 7.00 280 P122270S8015800 7.00 300C200 P061630S1225200 3.00 70 P081830S1225200 3.00 80 P102030S1225200 3.00 90 P122230S1225200 3.00 105C400 P061635S1225400 3.50 95 P081835S1225400 3.50 110 P102035S1225400 3.50 125 P122235S1225400 3.50 140C800 P061655S1225800 5.50 155 P081855S1225800 5.50 185 P102055S1225800 5.50 210 P122255S1225800 5.50 240C200 P061625S1225200 2.50 60 P081825S1225200 2.50 70 P102025S1225200 2.50 75 P122225S1225200 2.50 85C400 P061635S1225400 3.50 90 P081835S1225400 3.50 100 P102035S1225400 3.50 125 P122235S1225400 3.50 140C800 P061647S1225800 4.75 135 P081847S1225800 4.75 160 P102047S1225800 4.75 175 P122247S1225800 4.75 200C200 P061625S2025200 2.50 55 P081825S2025200 2.50 60 P102025S2025200 2.50 65 P122225S2025200 2.50 75C400 P061627S2025400 2.75 70 P081827S2025400 2.75 85 P102027S2025400 2.75 90 P122227S2025400 2.75 100C800 P061635S2025800 3.50 110 P081835S2025800 3.50 145 P102037S2025800 3.75 120 P122235S2025800 3.50 145C200 P061625S3025200 2.50 55 P081825S3025200 2.50 65 P102025S3025200 2.50 70 P122225S3025200 2.50 70C400 P061625S3025400 2.50 60 P081825S3025400 2.50 70 P102025S3025400 2.50 80 P122225S3025400 2.50 90C800 P061635S3025800 3.50 90 P081835S3025800 3.50 100 P102035S3025800 3.50 110 P122235S3025800 3.50 125C200 P061625S4025200 2.50 55 P081825S4025200 2.50 65 P102025S4025200 2.50 65 P122225S4025200 2.50 75C400 P061627S4025400 2.75 65 P081827S4025400 2.75 75 P102027S4025400 2.75 75 P122227S4025400 2.75 90C800 P061630S4025800 3.00 80 P081830S4025800 3.00 90 P102030S4025800 3.00 100 P122230S4025800 3.00 110C200 P061625S5025200 2.50 55 P081825S5025200 2.50 70 P102025S5025200 2.50 75 P122225S5025200 2.50 80C400 P061625S5025400 2.50 55 P081825S5025400 2.50 70 P102025S5025400 2.50 75 P122225S5025400 2.50 80C800 P061627S5025800 2.75 65 P081827S5025800 2.75 80 P102027S5025800 2.75 95 P122227S5025800 2.75 100

RELAY CLASS ACCURACY SLIPOVER CT RATINGS*

800:5

1000:5

50:5

100:5

200:5

CurrentRatio

AccRating

CatalogNumber

400:5

5000:5

Inside Ø (ID)Outside Ø (OD)

12"22"

1200:5

2000:5

3000:5

4000:5

600:5

6"16"

WT(#)

8"18"

10"20"

HT(")

WT(#)

CatalogNumber

HT(")

For Ground Shields and Mounting Options, see page 6 of the Engineered Designs section

- Units also available in dual ratio designs * Rating Factors (Typical) - 2.0 for units up to 2000:5, 1.5 for 3000:5 and above - contact factory for other options

- Preferred sizes are shown. Other sizes are readily available - contact factory for details

OPTIONAL ITEMS:

- Units available in multi ratio designs. For multi-ratio, change "S" of catalog number to "M"

HT(")

WT(#)

CatalogNumber

HT(")

CatalogNumber

WT(#)

101 Kuhlman Blvd., Versailles, KY 40383 • Phone (800) 950-6966 • FAX (859) 873-3316 • www.kuhlman.com �

www.kuhlman.com June 2007

EngineeredDesignsPS–981 Current Transformer

C25 P142445S5005020 4.50 240 P162645S5005020 4.50 230 P182845S5005020 4.50 250 P203045S5005020 4.50 275C50 P142470S5005050 7.00 390 P162675S5005050 7.00 430 P182870S5005050 7.00 470 P203070S5005050 7.00 510C50 P142445S1015050 4.50 240 P162645S1015050 4.50 230 P182845S1015050 4.50 250 P203045S1015050 4.50 275

C100 P142470S1015100 7.00 390 P162675S1015100 7.00 430 P182870S1015100 7.00 470 P203070S1015100 7.00 510C50 P142435S2015050 3.50 140 P162635S2015050 3.50 155 P182835S2015050 3.50 175 P203035S2015050 3.50 185

C100 P142445S2015100 4.50 195 P162645S2015100 4.50 215 P182845S2015100 4.50 240 P203045S2015100 4.50 260C200 P142470S2015200 7.00 350 P162675S2015200 7.00 385 P182870S2015200 7.00 425 P203070S2015200 7.00 475C100 P142430S4015100 3.00 140 P162630S4015100 3.00 150 P182830S4015100 3.00 170 P203030S4015100 3.00 155C200 P142442S4015200 4.25 195 P162642S4015200 4.25 215 P182842S4015200 4.25 235 P203042S4015200 4.25 255C400 P142470S4015400 7.00 350 P162667S4015400 6.75 385 P182870S4015400 7.00 420 P203070S4015400 7.00 455C200 P142435S6015200 3.50 150 P162635S6015200 3.50 165 P182835S6015200 3.50 180 P203035S6015200 3.50 195C400 P142450S6015400 5.00 245 P162650S6015400 5.00 265 P182850S6015400 5.00 290 P203050S6015400 5.00 315C800 P142482S6015800 8.25 440 P162682S6015800 8.25 485 P182882S6015800 8.25 530 P203082S6015800 8.25 580C200 P142430S8015200 3.00 120 P162630S8015200 3.00 135 P182830S8015200 3.00 145 P203030S8015200 3.00 160C400 P142442S8015400 4.25 200 P162642S8015400 4.25 215 P182842S8015400 4.25 235 P203042S8015400 4.25 255C800 P142470S8015800 7.00 335 P162670S8015800 7.00 370 P182870S8015800 7.00 400 P203070S8015500 7.00 440C200 P142430S1225200 3.00 115 P162630S1225200 3.00 125 P182830S1225200 3.00 140 P203030S1225200 3.00 150C400 P142435S1225400 3.50 155 P162635S1225400 3.50 170 P182835S1225400 3.50 190 P203035S1225400 3.50 200C800 P142455S1225800 5.50 265 P162655S1225800 5.50 295 P182855S1225800 5.50 320 P203055S1225500 5.50 350C200 P142425S1225200 2.50 95 P162625S1225200 2.50 100 P182825S1225200 2.50 110 P203025S1225200 2.50 120C400 P142435S1225400 3.50 150 P162635S1225400 3.50 170 P182835S1225400 3.50 180 P203035S1225400 3.50 200C800 P142447S1225800 4.75 230 P162650S1225800 5.00 270 P182850S1225800 5.00 295 P203050S1225500 5.00 320C200 P142425S2025200 2.50 80 P162625S2025200 2.50 90 P182825S2025200 2.50 95 P203025S2025200 2.50 100C400 P142427S2025400 2.75 110 P162627S2025400 2.75 125 P182830S2025400 3.00 135 P203027S2025400 2.75 145C800 P142435S2025800 3.50 165 P162635S2025800 3.50 175 P182835S2025800 3.50 190 P203035S2025800 3.50 200C200 P142425S3025200 2.50 85 P162625S3025200 2.50 85 P182825S3025200 2.50 90 P203025S3025200 2.50 95C400 P142425S3025400 2.50 100 P162625S3025400 2.50 110 P182825S3025400 2.50 120 P203025S3025400 2.50 125C800 P142435S3025800 3.50 140 P162635S3025800 3.50 150 P182835S3025800 3.50 165 P203035S3025800 3.50 175C200 P142425S4025200 2.50 85 P162625S4025200 2.50 90 P182825S4025200 2.50 95 P203025S4025200 2.50 100C400 P142427S4025400 2.75 90 P162627S4025400 2.75 100 P182827S4025400 2.75 105 P203027S4025400 2.75 115C800 P142430S4025800 3.00 115 P162630S4025800 3.00 125 P182830S4025800 3.00 135 P203030S4025800 3.00 145C200 P142425S5025200 2.50 90 P162625S5025200 2.50 95 P182825S5025200 2.50 100 P203025S5025200 2.50 105C400 P142425S5025400 2.50 90 P162625S5025400 2.50 95 P182825S5025400 2.50 100 P203025S5025400 2.50 105C800 P142427S5025800 2.75 105 P162627S5025800 2.75 115 P182827S5025800 2.75 125 P203027S5025800 2.75 135

WT(#)

CatalogNumber

HT(")

WT(#)

For Ground Shields and Mounting Options, see page 6 of the Engineered Designs section

- Units also available in dual ratio designs * Rating Factors (Typical) - 2.0 for units up to 2000:5, 1.5 for 3000:5 and above - contact factory for other options

- Preferred sizes are shown. Other sizes are readily available - contact factory for details

OPTIONAL ITEMS:

- Units available in multi ratio designs. For multi-ratio, change "S" of catalog number to "M"

14"24"

CatalogNumber

HT(")

WT(#)

CatalogNumber

HT(")

HT(")

WT(#)

CatalogNumber

16"26"

18"28"

20"30"

5000:5

Inside Ø (ID)Outside Ø (OD)

1200:5

2000:5

3000:5

4000:5

600:5

RELAY CLASS ACCURACY SLIPOVER CT RATINGS*

800:5

1000:5

50:5

100:5

200:5

CurrentRatio

AccRating

400:5

�0101 Kuhlman Blvd., Versailles, KY 40383 • Phone (800) 950-6966 • FAX (859) 873-3316 • www.kuhlman.com

www.kuhlman.comJune 2007

EngineeredDesigns PS–981 Current Transformer

C25 P223245S5005020 4.50 295 P243445S5005020 4.50 315 P263645S5005020 4.50 340 P283845S5005020 4.50 360C50 P223270S5005050 7.00 550 P243470S5005050 7.00 590 P263670S5005050 7.00 625 P283870S5005050 7.00 670C50 P223245S1015050 4.50 295 P243445S1015050 4.50 315 P263645S1015050 4.50 340 P283845S1015050 4.50 360

C100 P223270S1015100 7.00 550 P243470S1015100 7.00 590 P263670S1015100 7.00 625 P283870S1015100 7.00 670C50 P223235S2015050 3.50 200 P243435S2015050 3.50 215 P263635S2015050 3.50 225 P283835S2015050 3.50 230

C100 P223245S2015100 4.50 280 P243445S2015100 4.50 300 P263645S2015100 4.50 325 P283845S2015100 4.50 335C200 P223270S2015200 7.00 500 P243470S2015200 7.00 545 P263670S2015200 7.00 575 P283870S2015200 7.00 620C100 P223230S4015100 3.00 170 P243430S4015100 3.00 180 P263630S4015100 3.00 190 P283830S4015100 3.00 210C200 P223242S4015200 4.25 275 P243442S4015200 4.25 295 P263642S4015200 4.25 315 P283842S4015200 4.25 345C400 P223270S4015400 7.00 490 P243470S4015400 7.00 520 P263670S4015400 7.00 545 P283870S4015400 7.00 570C200 P223235S6015200 3.50 210 P243435S6015200 3.50 225 P263635S6015200 3.50 240 P283835S6015200 3.50 255C400 P223250S6015400 5.00 340 P243450S6015400 5.00 365 P263650S6015400 5.00 390 P283850S6015400 5.00 415C800 P223282S6015800 8.25 620 P243482S6015800 8.25 665 P263682S6015800 8.25 710 P283882S6015800 8.25 755C200 P223230S8015200 3.00 170 P243430S8015200 3.00 180 P263630S8015200 3.00 195 P283830S8015200 3.00 200C400 P223242S8015400 4.25 280 P243442S8015400 4.25 300 P263642S8015400 4.25 310 P283842S8015400 4.25 330C800 P223270S8015800 7.00 470 P243470S8015800 7.00 500 P263670S8015800 7.00 540 P283870S8015800 7.00 575C200 P223230S1225200 3.00 165 P243430S1225200 3.00 175 P263630S1225200 3.00 185 P283830S1225200 3.00 200C400 P223235S1225400 3.50 220 P243435S1225400 3.50 235 P263635S1225400 3.50 250 P283835S1225400 3.50 270C800 P223255S1225800 5.50 375 P243455S1225800 5.50 400 P263655S1225800 5.50 430 P283855S1225800 5.50 460C200 P223225S1225200 2.50 130 P243425S1225200 2.50 140 P263625S1225200 2.50 150 P283825S1225200 2.50 155C400 P223235S1225400 3.50 210 P243435S1225400 3.50 225 P263635S1225400 3.50 235 P283835S1225400 3.50 260C800 P223250S1225800 5.00 345 P243450S1225800 5.00 370 P263650S1225800 5.00 395 P283850S1225800 5.00 420C200 P223225S2025200 2.50 110 P243425S2025200 2.50 115 P263625S2025200 2.50 125 P283825S2025200 2.50 130C400 P223227S2025400 2.75 155 P243427S2025400 2.75 165 P263627S2025400 2.75 175 P283827S2025400 2.75 185C800 P223235S2025800 3.50 220 P243435S2025800 3.50 235 P263635S2025800 3.50 250 P283835S2025800 3.50 265C200 P223225S3025200 2.50 100 P243425S3025200 2.50 105 P263625S3025200 2.50 110 P283825S3025200 2.50 120C400 P223225S3025400 2.50 135 P243425S3025400 2.50 135 P263625S3025400 2.50 135 P283825S3025400 2.50 140C800 P223235S3025800 3.50 190 P243435S3025800 3.50 200 P263635S3025800 3.50 210 P283835S3025800 3.50 225C200 P223225S4025200 2.50 105 P243425S4025200 2.50 110 P263625S4025200 2.50 115 P283825S4025200 2.50 125C400 P223227S4025400 2.75 120 P243427S4025400 2.75 130 P263627S4025400 2.75 135 P283827S4025400 2.75 145C800 P223230S4025800 3.00 155 P243430S4025800 3.00 165 P263630S4025800 3.00 175 P283830S4025800 3.00 190C200 P223225S5025200 2.50 115 P243425S5025200 2.50 120 P263625S5025200 2.50 125 P283825S5025200 2.50 130C400 P223225S5025400 2.50 115 P243425S5025400 2.50 120 P263625S5025400 2.50 125 P283825S5025400 2.50 130C800 P223227S5025800 2.75 145 P243427S5025800 2.75 155 P263627S5025800 2.75 165 P283827S5025800 2.75 175

RELAY CLASS ACCURACY SLIPOVER CT RATINGS*

800:5

1000:5

50:5

100:5

200:5

CurrentRatio

AccRating

400:5

5000:5

Inside Ø (ID)Outside Ø (OD)

1200:5

2000:5

3000:5

4000:5

600:5

22"32"

24"34"

26"36"

28"38"

For Ground Shields and Mounting Options, see page 6 of the Engineered Designs section

- Units also available in dual ratio designs * Rating Factors (Typical) - 2.0 for units up to 2000:5, 1.5 for 3000:5 and above - contact factory for other options

- Preferred sizes are shown. Other sizes are readily available - contact factory for details

OPTIONAL ITEMS:

- Units available in multi ratio designs. For multi-ratio, change "S" of catalog number to "M"

CatalogNumber

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CatalogNumber

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101 Kuhlman Blvd., Versailles, KY 40383 • Phone (800) 950-6966 • FAX (859) 873-3316 • www.kuhlman.com ��

www.kuhlman.com June 2007

EngineeredDesignsPS–981 Current Transformer

C25 P304045S5005020 4.50 380 P324245S5005020 4.50 400 P344445S5005020 4.50 415 P364645S5005020 4.50 440C50 P304070S5005050 7.00 710 P324270S5005050 7.00 750 P344470S5005050 7.00 785 P364670S5005050 7.00 825C50 P304045S1015050 4.50 380 P324245S1015050 4.50 400 P344445S1015050 4.50 415 P364645S1015050 4.50 440

C100 P304070S1015100 7.00 710 P324270S1015100 7.00 750 P344470S1015100 7.00 785 P364670S1015100 7.00 825C50 P304035S2015050 3.50 245 P324235S2015050 3.50 260 P344435S2015050 3.50 275 P364635S2015050 3.50 280

C100 P304045S2015100 4.50 370 P324245S2015100 4.50 400 P344445S2015100 4.50 420 P364645S2015100 4.50 435C200 P304070S2015200 7.00 650 P324270S2015200 7.00 685 P344470S2015200 7.00 720 P364670S2015200 7.00 750C100 P304030S4015100 3.00 225 P324230S4015100 3.00 245 P344430S4015100 3.00 240 P364630S4015100 3.00 260C200 P304042S4015200 4.25 375 P324242S4015200 4.25 395 P344442S4015200 4.25 410 P364642S4015200 4.25 430C400 P304070S4015400 7.00 635 P324270S4015400 7.00 660 P344470S4015400 7.00 710 P364670S4015400 7.00 750C200 P304035S6015200 3.50 270 P324235S6015200 3.50 280 P344435S6015200 3.50 300 P364635S6015200 3.50 310C400 P304050S6015400 5.00 440 P324250S6015400 5.00 465 P344450S6015400 5.00 480 P364650S6015400 5.00 500C800 P304082S6015800 8.25 800 P324282S6015800 8.25 850 P344482S6015800 8.25 875 P364682S6015800 8.25 925C200 P304030S8015200 3.00 220 P324230S8015200 3.00 230 P344430S8015200 3.00 275 P364630S8015200 3.00 250C400 P304042S8015400 4.25 350 P324242S8015400 4.25 375 P344442S8015400 4.25 420 P364642S8015400 4.25 410C800 P304070S8015800 7.00 610 P324270S8015800 7.00 645 P344470S8015800 7.00 665 P364670S8015800 7.00 700C200 P304030S1225200 3.00 210 P324230S1225200 3.00 225 P344430S1225200 3.00 235 P364630S1225200 3.00 250C400 P304035S1225400 3.50 285 P324235S1225400 3.50 300 P344435S1225400 3.50 315 P364635S1225400 3.50 330C800 P304055S1225800 5.50 485 P324255S1225800 5.50 515 P344455S1225800 5.50 540 P364655S1225800 5.50 570C200 P304025S1225200 2.50 165 P324225S1225200 2.50 175 P344425S1225200 2.50 185 P364625S1225200 2.50 200C400 P304035S1225400 3.50 245 P324235S1225400 3.50 280 P344435S1225400 3.50 310 P364635S1225400 3.50 340C800 P304050S1225800 5.00 445 P324250S1225800 5.00 470 P344450S1225800 5.00 485 P364650S1225800 5.00 510C200 P304025S2025200 2.50 140 P324225S2025200 2.50 145 P344425S2025200 2.50 155 P364625S2025200 2.50 180C400 P304027S2025400 2.75 195 P324227S2025400 2.75 200 P344427S2025400 2.75 210 P364627S2025400 2.75 220C800 P304035S2025800 3.50 280 P324235S2025800 3.50 295 P344435S2025800 3.50 325 P364637S2025800 3.75 350C200 P304025S3025200 2.50 125 P324225S3025200 2.50 130 P344425S3025200 2.50 135 P364625S3025200 2.50 140C400 P304025S3025400 2.50 155 P324225S3025400 2.50 160 P344425S3025400 2.50 170 P364625S3025400 2.50 180C800 P304035S3025800 3.50 240 P324235S3025800 3.50 255 P344435S3025800 3.50 265 P364635S3025800 3.50 270C200 P304025S4025200 2.50 135 P324225S4025200 2.50 145 P344425S4025200 2.50 150 P364625S4025200 2.50 155C400 P304027S4025400 2.75 155 P324227S4025400 2.75 165 P344427S4025400 2.75 175 P364627S4025400 2.75 180C800 P304030S4025800 3.00 200 P324230S4025800 3.00 215 P344430S4025800 3.00 220 P364630S4025800 3.00 230C200 P304025S5025200 2.50 135 P324225S5025200 2.50 145 P344425S5025200 2.50 160 P364625S5025200 2.50 170C400 P304025S5025400 2.50 135 P324225S5025400 2.50 145 P344425S5025400 2.50 160 P364625S5025400 2.50 170C800 P304027S5025800 2.75 180 P324227S5025800 2.75 185 P344427S5025800 2.75 190 P364627S5025800 2.75 200

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CatalogNumber

HT(")

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For Ground Shields and Mounting Options, see page 6 of the Engineered Designs section

- Units also available in dual ratio designs * Rating Factors (Typical) - 2.0 for units up to 2000:5, 1.5 for 3000:5 and above - contact factory for other options

- Preferred sizes are shown. Other sizes are readily available - contact factory for details

OPTIONAL ITEMS:

- Units available in multi ratio designs. For multi-ratio, change "S" of catalog number to "M"

30"40"

34"44"

36"46"

32"42"

5000:5

Inside Ø (ID)Outside Ø (OD)

1200:5

2000:5

3000:5

4000:5

600:5

RELAY CLASS ACCURACY SLIPOVER CT RATINGS*

800:5

1000:5

50:5

100:5

200:5

CurrentRatio

AccRating

400:5

��101 Kuhlman Blvd., Versailles, KY 40383 • Phone (800) 950-6966 • FAX (859) 873-3316 • www.kuhlman.com

www.kuhlman.comJune 2007

EngineeredDesigns PS–981 Current Transformer

B0.2 P061635S4015020 3.5 85 P081835S4015020 3.5 100 P102035S4015020 3.5 115 P122240S4015020 4.0 150B0.5 P061645S4015050 4.5 120 P081845S4015050 4.5 140 P102045S4015050 4.5 160 P122245S4015050 4.5 185B0.9 -- -- -- -- -- -- P102055S4015090 5.5 210 P122255S4015090 5.5 235B1.8 P061655S4015180 5.5 155 P081855S4015180 5.5 180 P102065S4015180 6.5 275 P122270S4015180 7.0 315B0.2 P061625S5015020 2.5 50 P081825S5015020 2.5 60 P102025S5015020 2.5 70 P122225S5015020 2.5 75B0.5 -- -- -- -- -- -- -- -- -- P122235S5015050 3.5 130B0.9 P061635S5015090 3.5 85 P081835S5015090 3.5 100 P102035S5015090 3.5 115 P122245S5015090 4.5 185B1.8 P061645S5015180 4.5 120 P081845S5015180 4.5 120 P102045S5015180 4.5 160 P122265S5015180 6.5 290B0.5 P061625S6015050 2.5 50 P081825S6015050 2.5 60 P102025S6015050 2.5 70 -- -- --B0.9 -- -- -- -- -- -- -- -- -- P122235S6015090 3.5 130B1.8 P061635S6015180 3.5 85 P081835S6015180 3.5 100 P102035S6015180 3.5 115 P122240S6015180 4.0 165B0.9 P061625S8015090 2.5 50 P081825S8015090 2.5 60 P102025S8015090 2.5 70 P122225S8015090 2.5 75B1.8 P061635S8015180 3.5 85 P081835S8015180 3.5 100 P102035S8015180 3.5 115 P122235S8015180 3.5 130

1000:5 B1.8 P061635S1025180 3.5 85 P081835S1025180 3.5 100 P102035S1025180 3.5 115 P122235S1025180 3.5 1401200:5 B1.8 P061635S1225180 3.5 85 P081825S1225180 3.5 100 P102030S1225180 3.0 100 P122230S1225180 3.0 1101500:5 B1.8 P061635S1525180 3.5 85 P081835S1525180 3.5 100 P102030S1525180 3.0 100 P122230S1525180 3.0 1101600:5 B1.8 P061635S1625180 3.5 85 P081835S1625180 3.5 100 P102030S1625180 3.0 100 P122230S1625180 3.0 1102000:5 B1.8 P061635S2025180 3.5 85 P081835S2025180 3.5 100 P102030S2025180 3.0 100 P122230S2025180 3.0 1103000:5 B1.8 P061635S3025180 3.5 85 P081835S3025180 3.5 100 P102030S3025180 3.0 100 P122230S3025180 3.0 110

B0.2 P142435S4015020 3.5 145 P162635S4015020 3.5 150 P182835S4015020 3.5 175 P203035S4015020 3.5 190B0.5 P142445S4015050 4.5 200 P162645S4015050 4.5 215 P182845S4015050 4.5 245 P203045S4015050 4.5 265B0.9 P142455S4015090 5.5 265 P162655S4015090 5.5 275 P182865S4015090 6.5 390 P203075S4015090 7.5 500B1.8 -- -- -- -- -- -- -- -- -- -- -- --B0.2 -- -- -- -- -- -- -- -- -- -- -- --B0.5 P142435S5015050 3.5 145 P162635S5015050 3.5 150 P182835S5015050 3.5 175 P203035S5015050 3.5 190B0.9 P142445S5015090 4.5 200 P162645S5015090 4.5 215 P182845S5015090 4.5 245 P203045S5015090 5.5 345B1.8 P142465S5015180 6.5 325 P162665S5015180 6.5 340 P182865S5015180 6.5 465 P203085S5015180 8.5 580B0.5 -- -- -- -- -- -- P182835S6015050 3.5 175 P203035S6015050 3.5 190B0.9 P142435S6015050 3.5 145 P162635S6015090 3.5 150 P182845S6015090 4.5 245 P203045S6015090 4.5 265B1.8 P142455S6015180 5.5 265 P162655S6015180 5.5 275 P182855S6015180 5.5 320 P203065S6015180 6.5 425B0.9 P142435S8015090 3.5 145 P162635S8015090 3.5 150 P182835S8015090 3.5 175 P203035S8015090 3.5 190B1.8 P142445S8015180 4.5 200 P162645S815180 4.5 215 P182845S8015180 4.5 245 P203045S8015180 4.5 265

1000:5 B1.8 P142440S1025180 4.0 175 P162640S1025180 4.0 195 P182840S1025180 4.0 225 P203045S1025180 4.5 2701200:5 B1.8 P142435S1225180 3.5 145 P162635S1225180 3.5 150 P182835S1225180 3.5 175 P203035S1225180 3.5 1901500:5 B1.8 P142435S1525180 3.5 145 P162635S1525180 3.5 150 P182835S1525180 3.5 175 P203035S1525180 3.5 1901600:5 B1.8 P142435S1625180 3.5 145 P162635S1625180 3.5 150 P182835S1625180 3.5 175 P203035S1625180 3.5 1902000:5 B1.8 P142435S2025180 3.5 145 P162635S2025180 3.5 150 P182835S2025180 3.5 175 P203035S2025180 3.5 1903000:5 B1.8 P142435S3025180 3.5 145 P162635S3025180 3.5 150 P182835S3025180 3.5 175 P203035S3025180 3.5 190

* Rating Factors (Typical) - 2.0 for units up to 2000:5, 1.5 for 3000:5 - contact factory for other options

- Preferred sizes are shown. Other sizes are readily available - contact factory for details

400:5

500:5

600:5

800:5

- Units also available in dual ratio designs

HT(")

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20"30"

Inside Ø (ID)Outside Ø (OD)CurrentRatio

0.3 AccBurden

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CatalogNumber

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14"24"

16"26"

18"28"

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CatalogNumber

HT(")

6"16"

8"18"

10"20"

OPTIONAL ITEMS:

600:5

For Ground Shields and Mounting Options, see page 6 of the Engineered Designs section

CatalogNumber

METERING CLASS ACCURACY SLIPOVER CT RATINGS*

800:5

400:5

CurrentRatio

0.3 AccBurden

CatalogNumber

500:5

Inside Ø (ID)Outside Ø (OD)

WT(#)

12"22"

CatalogNumber

HT(")

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HT(")

101 Kuhlman Blvd., Versailles, KY 40383 • Phone (800) 950-6966 • FAX (859) 873-3316 • www.kuhlman.com ��

www.kuhlman.com June 2007

EngineeredDesignsPS–981 Current Transformer

B0.2 P223235S4015020 3.5 200 P243445S4015020 4.5 310 P263645S4015020 4.5 330 P283845S4015020 4.5 350B0.5 P223255S4015050 5.5 375 P243455S4015050 5.5 400 P263665S4015050 6.5 525 P283865S4015050 6.5 560B0.9 P223285S4015090 8.5 625 P243485S4015090 8.5 670 -- -- -- -- -- --B1.8 -- -- -- -- -- -- -- -- -- -- -- --B0.2 P223235S5015020 3.5 200 P243435S5015020 3.5 220 P263635S5015020 3.5 230 P283835S5015020 3.5 250B0.5 P223245S5015050 4.5 290 P243445S5015050 4.5 310 P263645S5015050 4.5 330 P283855S5015050 5.5 450B0.9 P223265S5015090 6.5 460 P243465S5015090 6.5 490 P263665S5015090 6.5 525 P283875S5015090 7.5 660B1.8 -- -- -- -- -- -- -- -- -- -- -- --B0.5 P223235S6015050 3.5 200 P243435S6015050 3.5 220 P263645S6015050 4.5 330 P283845S6015050 4.5 350B0.9 P223245S6015090 4.5 290 P243455S6015090 5.5 400 P263655S6015090 5.5 430 P283865S6015090 6.5 560B1.8 P223275S6015180 7.5 545 P243485S6015180 8.5 670 P263685S6015180 8.5 720 -- -- --B0.9 P223235S8015090 3.5 200 P243435S8015090 3.5 220 P263645S8015090 4.5 330 P283845S8015090 4.5 350B1.8 P223245S8015180 4.5 375 P243445S8015180 4.5 400 P263655S8015180 5.5 430 P283865S8015180 6.5 560

1000:5 B1.8 P333245S1025180 4.5 290 P243445S1025180 4.5 310 P263645S1025180 4.5 330 P283855S1025180 5.5 4501200:5 B1.8 P223235S1225180 3.5 200 P243435S1225180 3.5 220 P263635S1225180 3.5 230 P283835S1225180 3.5 2501500:5 B1.8 P223235S1525180 3.5 200 P243435S1525180 3.5 220 P263635S1525180 3.5 230 P283835S1525180 3.5 2501600:5 B1.8 P223235S1625180 3.5 200 P243435S1625180 3.5 220 P263635S1625180 3.5 230 P283835S1625180 3.5 2502000:5 B1.8 P223235S2025180 3.5 200 P243435S2025180 3.5 220 P263635S2025180 3.5 230 P283835S2025180 3.5 2503000:5 B1.8 P223235S3025180 3.5 200 P243435S3025180 3.5 220 P263635S3025180 3.5 230 P283835S3025180 3.5 250

B0.2 P304045S4015020 4.5 375 P324245S4015020 4.5 390 P344445S4015020 4.5 415 P364655S4015020 5.5 565B0.5 P304075S4015050 7.5 700 P324285S4015050 8.5 855 P344485S4015050 8.5 900 P364685S4015050 8.5 950B0.9 -- -- -- -- -- -- -- -- -- -- -- --B1.8 -- -- -- -- -- -- -- -- -- -- -- --B0.2 P304045S5015020 4.5 325 P324245S4015020 4.5 390 P344445S5015020 4.5 415 P364655S5015020 5.5 565B0.5 P304065S5015050 6.5 590 P324265S5015050 6.5 625 P344465S5015050 6.5 660 P364675S5015050 7.5 820B0.9 P304085S5015090 8.5 810 P324285S5015090 8.5 855 P344485S5015090 8.5 900 -- -- --B1.8 -- -- -- -- -- -- -- -- -- -- -- --B0.5 P304045S6015050 4.5 325 P324245S6015050 4.5 390 P344455S6015050 5.5 540 P364655S6015050 5.5 565B0.9 P304065S6015090 6.5 590 P324265S6015090 6.5 625 P344475S6015090 7.5 780 P364675S6015090 7.5 820B1.8 -- -- -- -- -- -- -- -- -- -- -- --B0.9 P304045S8015090 4.5 325 P324245S8015090 4.5 390 P344445S8015090 4.5 415 P364645S8015090 4.5 435B1.8 P304065S8015180 6.5 590 P324275S8015180 7.5 745 P344475S8015180 7.5 780 P364675S8015180 7.5 820

1000:5 B1.8 P304055S1025180 5.5 485 P323455S1025180 5.5 510 P344460S1025180 6.0 600 P364660S1025180 6.0 6351200:5 B1.8 P304045S1225180 4.5 325 P324245S1225180 4.5 390 P344445S1225180 4.5 415 P364645S1225180 4.5 5651500:5 B1.8 P304035S1525180 3.5 265 P324235S1525180 3.5 280 P344435S1525180 3.5 295 P364635S1525180 3.5 3101600:5 B1.8 P304035S1625180 3.5 265 P324235S1625180 3.5 280 P344435S1625180 3.5 295 P364635S1625180 3.5 3102000:5 B1.8 P304035S2025180 3.5 265 P324235S2025180 3.5 280 P344435S2025180 3.5 295 P364635S2025180 3.5 3103000:5 B1.8 P304035S3025180 3.5 265 P324235S3025180 3.5 280 P344435S3025180 3.5 295 P364635S3025180 3.5 310

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HT(")

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CatalogNumber

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CatalogNumber

30"40"

32"42"

34"44"

36"46"

HT(")

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CatalogNumber

HT(")

WT(#)

CatalogNumber

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CatalogNumber

HT(")

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CatalogNumber

HT(")

METERING CLASS ACCURACY SLIPOVER CT RATINGS*

800:5

400:5

CurrentRatio

0.3 AccBurden

500:5

Inside Ø (ID)Outside Ø (OD)

OPTIONAL ITEMS:

600:5

For Ground Shields and Mounting Options, see page 6 of the Engineered Designs section

24"34"

26"36"

28"38"

22"32"

Inside Ø (ID)Outside Ø (OD)CurrentRatio

0.3 AccBurden

* Rating Factors (Typical) - 2.0 for units up to 2000:5, 1.5 for 3000:5 - contact factory for other options

- Preferred sizes are shown. Other sizes are readily available - contact factory for details

400:5

500:5

600:5

800:5

- Units also available in dual ratio designs

��101 Kuhlman Blvd., Versailles, KY 40383 • Phone (800) 950-6966 • FAX (859) 873-3316 • www.kuhlman.com

www.kuhlman.comJune 2007

EngineeredDesigns PH–982 Current Transformer

ID x OD 100:5 150:5 200:5 300:5 400:5 500:5 600:5 800:5 1000:5 1200:5 & up

RF 2.0 2.0 2.0 3.0-4.0 4.0 4.0 4.0 4.0 3.0 see noteHT 8.75" 8.75" 8" 6" - 8" 6" - 8" 6" - 8" 6" 6" 6" 3" - 6"

6 x 168 x 18

10 x 2012 x 2214 x 2416 x 2618 x 2820 x 3022 x 3224 x 3426 x 3628 x 3830 x 4032 x 4234 x 4436 x 46

Notes-Rating Factor: unless otherwise noted, 1000:5 thru 2000:5 - RF 3.0; 2500:5 thru 3000:5 - RF 2.0; 4000:5 and above - RF 1.5.This application guide is intended to assist the engineer in selecting the metering range desired by CT size and current ratio.The standard accuracy class as defined by IEEE C57.13 states that the accuracy at 10% rated current can be twice the accuracy class bywhich it is rated at nominal current, and must be in that same class from 100% rated current throught the CT rating factor. This table isbased on test results of various designs produced and is subject to change. It is to be used as a guide only - for actualperformance, contact factory. This table provides the lowest measurable range obtainable, based on actual test data, the CT will deliverto the rated burden. If a percentage is missing, it is assumed to respond as defined. For stated percentages, the accuracy will be maintained from that percentage of rated current through its rating factor. For other sizes and special burden requirements - consult KEC Engineering.Non-standard burdens or adjustment to fixed burdens are possible.No units will be available with build-ups and/or heights less than 3.00".

For information regarding dimensional data, mounting configurations and options, see the standard PS-981 pages 3-7 of this guide.

0.15 B0.9 - 5%0.15 B1.8 - 10%

MAY BE LOWER AS

RATIOINCREASES -

WILLPOSSIBLY

HOLDACCURACY

DOWN TO 1%

NOMINAL CURRENT RATIO

ACCUSlipTM Current Transformer Selection Guide

0.15 B0.5 - 5%0.15 B0.90.3 B1.8

0.15 B0.9 - 5%0.15 B1.8 - 10%

0.15 B0.9 - 5%0.3 B1.8 - 5%

0.15 B0.5 - 5% 0.15 B0.90.3 B1.8

0.15 B0.5 - 5%0.3 B0.9 - 10%

0.3 B1.8

0.15 B1.8 - 5%

0.15 B0.9 - 5%0.15B1.8-10%

0.15 B0.5 - 5%0.15 B0.90.3 B1.8

0.15B0.9 - 10%0.3 B1.8

0.15 B0.5 - 5%0.15 B0.90.3 B1.8

0.15 B0.5 - 5%0.3 B0.9 - 10%

0.15B0.2 - 5%0.15 B0.50.3 B0.9

0.15B0.2 - 5%0.3 B0.50.6 B0.9

0.15 B0.20.3 B0.9

0.3 B0.1 - 5%0.3 B0.2/B0.4

0.6 B0.5

0.15 B0.50.3 B0.9 - 10%

0.15 B0.20.3 B0.9

0.3 B0.1 class ONLY

0.3 B0.2 class ONLY

0.15 B0.2 - 5%0.3 B0.9

0.15B0.2 -10%0.3 B0.9

ACCUSlip™ is a registered trademark of Kuhlman Electric Corporation.