Polymer Suspension Insulators 69kVto765kV - …

1 CATALOG PolymerSuspension Insulators69kV to 765kVNGK Locke Polymer Insulators , Beach, Virginia, of CONTENTST able of Contents .. 1 Design Features .. 2 Material .. 2 Definition of Rating .. 2 Standard Material Test .. 3 Grading Rings .. 4 Adjustments with Grading Rings .. 4 Catalog Number 5 Configuration of End Fittings .. 5 How to select Catalog Number .. 6 Shed Profile .. 625kip SC, SS, SL Shed 730kip SC, SS, SL Shed 950kip SC, SS, SL Shed Long Leakage / 25kip SE Shed Series ..13 Extra Long Leakage / 30kip SE Shed Series ..14 Extra Long Leakage / 50kip SE Shed Series ..15 Standard Leakage / 80kip SN Shed Series ..16 Longer Leakage / 80kip SL Shed Series .. Polymer Insulators , Inc. is ISO 9001 certified by the British Standards Institutes, BSI.

2 BSI is accreditedby NACCA, RAB, and RvC. 1 DESIGN FEATURESP olymer Suspension Insulators of NGK-Locke Polymer Insulators , Inc. (NLPI) are prod-ucts on the housing (sheath) or at the weathershed is directly vulcanized to the core during compression molding process, providing superiorbonding performance. Also, pressure controlled uniform crimping providing superior long-termmechanical performance. HOUSING TO CORE-- Housing and core are and the interface strengthbetween housing and core is higher than the tearing strength of housing PROFILE -- On the basis of contamination level, we can propose best-fit shed profile. (Seepage 6). Shed profile complies with IEC Pub. 60815 Guide for the selection of Insulators in respectof polluted conditions.

3 END FITTING TO CORE -- Crimping process is for each step, minimizing stress concentration. ACOUSTIC EMISSION (AE) DETECTION-- During crimping of end fittings on the core, all theproducts are checked for possible damage of core by AE AND END FITTING INTERFACE (SEALING) -- ! " # $integral to the hous-ing provides positive contact with the end fittings and RTV (Room Temperature Vulcanized) prevents the ingress of moisture %& $ $ ' MATERIALWEATHERSHEDS (SHED) & HOUSING (SHEATH) -- Weathersheds and housing are the samematerial (100% silicone rubber)before adding fillers. The best mixture of base Polymer , fillers, andadditive agents achieves excellent contamination, weatherability, anti-tracking, and anti-erosion -- High quality pultruded FRP (Fiberglass Reinforced Plastic) rod is used.

4 The rod is madewith good alignment and distribution of fibers within Epoxy FITTINGS -- High grade forged steel or ductile iron is used. And all ferrous parts, other thanstainless steel, are galvanized in accordance with ASTM A153. Cotter key is made from RINGS -- High grade aluminum alloy is OF RATINGSPECIFIED MECHANICAL LOAD (SML) -- The SML is a load specified by the manufacturer thathas to be verified during a mechanical load test. It forms the basis for selection of an TEST LOAD (RTL)-- The RTL is a rating equal to 50% of the MATERIAL TEST Polymer Suspension Insulators of NGK-Locke Polymer Insulators , Inc., pass all the requirements ofprototype test and design test specified in ANSI ANSI also comply withthe following TEST-- Samples are subjected to ASTM G53 Standard Practicefor Operation Light- and Water- Exposure Apparatus (Fluorescent UV-Condensation Type) forExposure of Nonmetallic Materials.

5 After checking appearance, including SEM observation, weightloss, receding contact angle, we confirm that the sample passed this test (12,000 hrs) withoutcracks and AND EROSION (AGING) -- Our Polymer Insulators pass tracking and erosion test(5,000 hours) specified in IEC Pub. 61109 Annex C. Annex C is cyclic test to simulate natural cli-mate such as rain, fog, ultra-violet, and our Polymer Insulators pass tracking and wheel test (30,000 cycles) specified in CEALWIWG-01 and CSA FLAMMABILITY-- Samples 5 are subjected to IEC Pub. 60707 flammabilitytest. The samples meet the criteria FV0. Also this test is specified in IEC Pub. ARC -- Polymer Insulators withstand 150kA cycles power arc under applied tension loadof 3000 lbs without failure.

6 (Complies with clause of IEEE 1024)HIGH PRESSURE WASHING -- Polymer Insulators are designed to withstand high pressurewater washing at 550psi nozzle pressure, nozzle diameter 1/4 , and the distance of 10 from thenozzle to Polymer Wheel TestAging test under UV conditions4 GRADING RINGSG rading discs and/or rings are applied to NLPI Polymer Insulators for higher operating voltagesto reduce electrical stress concentration on and within the insulator and to reduce radio and/ortelevision interference. General recommendations of grading ring application are as Voltage138 kV161 kV230 kV345 kV500 kVand belowNLPITopNoneNone None 4 disc 8 Ring* Grading(tower side)Rings (Discs)Bottom None 4 disc 8 Ring* 11 Ring 15 RingApplication(line side)NLPI Insulator Cat# Suffix ---04-08-41-85 Grading discs are factory-installed.

7 Field installation is required for grading rings. The clamppart of the NLPI grading ring is designed to ensure correct position mounting only.* : In case of SL and SE sheds, need larger diameter of grading ring such as or 11 . Forother combinations of corona ring application please check with WITH GRADING RINGThe electrical and physical values shown in the following pages are for the Insulators withoutgrading rings or discs. The following table is required if grading rings or discs are used forsystem voltages of 161 kV and Voltage161 kV230 kV345 kV500 kV Arcing Distance, inch (mm) of(-20)(-50)(-70) (-140) tabular valuesLow Frequency F/O Dry, kV-5 -15 -25 -50 for 25k, 30k,Low Frequency F/O Wet, kV-5 -15 -20 -45 50k and 80kCritical Impulse F/O pos.

8 , kV-10 -30 -45 -85 SMLC ritical Impulse F/O neg., kV-15 -30 -45 -90 insulatorsNet Weight, lb (kg)+1 + + + (+ ) (+ ) (+ ) (+ ) The above adjusted electrical values are just for guidance because of non-linearity of NUMBER SYSTEM !"# #$ ! # ! % ! && '#$ !$ ( ) ! * ! +* +,, ' * ,, ! -* - ,, ! * ,, ! * ,, ! #& * &#'$ * $#! # * ! #.# * $ # ! #.# # $ * / ,, * 0/ ,, / ,, + * /+,, 12& ! $$ ! 3$ ( ) ! * 45# 2 6* 6 5 * 5 1* 1 ! * '. $ * # 7 8* # 7 8 CONFIGURATION OF END FITTINGS ! ! 9! $* !' (equivalent to ANSI 52-5, 7 bells)1To select mechanical rating, SMLIf rating is 25kip, 251251-S_-__0-__-__(refer to page 5)2To select Shed Profileon the basisIf medium contamination area,251-SS__0-__-__ of leakage distance.

9 See theshed profile is SSfollowing Shed profile for details. (refer to shed profile in this page)3To select Number of Shedson theIf section length is 401/4 (=53/4 251-SS250-__-__ basis of section lengthx7), number of sheds is 25(refer to page 7~16)4To select configuration of EndIf socket & ball, -SJ251-SS250-SJ-__ Fitting(refer to page 5)5To select Grading RingapplicationIf system voltage is 230kV, ring251-SS250-SJ-08on the basis of system voltage application is 08(refer to page 4) SHED PROFILEHOW TO SELECT CATALOG NUMBEROur catalog number is self-explanatory. Please follow the following general guidance todetermine a catalog , Office1880 West Oak Parkway, Suite 104 Marietta, Georgia 30062, U. S. A .Tel: +1(404) 659-3153 Fax: +1(404) 524-6185 Baltimore Office2525 Insulator DriveBaltimore, Maryland 21230, U.

10 S. A .Tel: +1(4 10) 347-1700 Fax: +1(4 10) 347-1724 Los Angeles Office21250 Hawthorne Blvd., Suite 500 Torrance, California 90503, U. S. A .Tel: +1(3 10) 316-3323 Fax: +1(3 10) 316-3944 CanadaNGK Insulators Canada, Office2700 Matheson Blvd. East, Suite 700 East Tower, Mississauga L4W 4V9, Ontario, CanadaTel: +1(905) 602-1266 Fax: +1(905) 238-8247 Montreal Office1501, Avenue McGill College Bureau 515 Montreal (Quebec) H3A 3M8, CanadaTel: +1(514) 281-8488 Fax: +1(514) 281- 8596 All Other Countries NGK Insulators , LTDAdd: 2-56, Suda-cho, Mizuho, Nagoya, 467-8530, JapanTel: +81-52-875-7511 Fax: +81-52-872-7530 Web: Insulators , Polymer Insulators , Diamond Springs Road, Virginia Beach, Virginia 23455, U. S. : +1(757) 460-3649 Fax: +1(757) 460-3550 Website.