Surge s Catalog Data CA235029EN Effective February 2016 Supersedes I235-35 August 2014 COOPER POWER SERIES UltraSIL polymer-housed VariSTAR surge arresters 5 ka and 10 ka Class 1 IEC 60099-4 for MV systems to 36 kv General Eaton recognizes the advantages of polymerhoused arresters with reduced size and weight and enhanced safety in this generation of Cooper Power series UltraSIL polymerhoused VariSTAR surge arresters. The UltraSIL polymer-housed VariSTAR surge arrester incorporates the industry recognized superior polymeric material silicone rubber. Using Metal Oxide Varistors (MOVs) having excellent electrical properties, these arresters provide superior overvoltage protection for MV distribution systems. Manufacturing our own MOV disks allows strict quality control over the manufacturing process from start to finish. After production, every MOV disk must pass a series of electrical tests designed to ensure the highest individual disk quality. These MOV disks have proven their reliability and protective abilities through years of in-service use. UltraSIL polymer-housed VariSTAR surge arresters are available in 5 ka and 10 ka Class 1 IEC 60099-4 designs. Construction The MOV disks are combined with aluminum end electrodes and are encapsulated in a highstrength composite wrap insulating material on our fully automated assembly line using strict quality control processes that eliminate manufacturing variances. The composite collar is cured to the MOV disk stack to form a solid insulation MOV disk module system that is inserted and bonded to the industry leading track resistant UltraSIL silicone rubber housing. This exclusive patented manufacturing process forms a secondary moisture seal under the primary silicone rubber housing seal, which makes the arrester impervious to moisture and capable of withstanding extreme electrical, environmental and cantilever load conditions. The composite wrapped UltraSIL polymer-housed VariSTAR surge arrester design represents a quantum leap in polymer arrester technology.
Catalog Data CA235029EN Effective February 2016 UltraSIL polymer-housed VariSTAR surge arresters Features and detailed description STAINLESS STEEL 12 mm LINE TERMINAL 3/8" (Optional) NAMEPLATE INFORMATION STAINLESS STEEL TOP CAP ALUMINUM LINE ELECTRODE UltraSIL SILICONE RUBBER HOUSING METAL OXIDE VARISTAR (MOV) DISKS BONDED SOLID INTERFACE ALUMINUM GROUND ELECTRODE OPTIONAL GROUND LEAD DISCONNECTOR FIBERGLASS REINFORCED EPOXY COMPOSITE OPTIONAL INSULATING GLASS-FILLED THERMOSET POLYESTER HANGER kv RATING LABEL (VISIBLE FROM GROUND) STAINLESS STEEL 12 mm GROUND TERMINAL 3/8" (Optional) Figure 1. Cutaway illustration of an UltraSIL polymer-housed VariSTAR surge arrester. Type UNS UHS System Application Voltages 3-36 kv 3-36 kv Rated Voltages, Ur 3-36 kv 3-36 kv Power System Frequency 50-60 Hz 50-60 Hz Applicable Design and Test Standard IEC 60099-4 IEC 60099-4 Nominal Discharge Current 5 ka 10 ka Line Discharge Class 1 High Current Withstand 65 ka 100 ka Pressure Relief Class Maximum Energy, 2000 μs Square Wave (Repeatable 1 min) 20 ka (rms Sym.) (B) 20 ka (rms Sym.) (B) 1.83 kj/kv Uc 2.85 kj/kv Uc High Current, Short Duration Energy Handling (65 ka) 3.17 kj/kv Uc (100 ka) 3.9 kj/kv Uc 2
UltraSIL polymer-housed VariSTAR surge arresters Catalog Data CA235029EN Effective February 2016 Features The UltraSIL silicone rubber housing has undergone a wide range of design tests to determine the optimum shed configuration. In addition, long term environmental testing has verified the lifetime superiority of UltraSIL silicone rubber when compared to other polymeric insulating materials. Independent laboratory tests have verified the superiority of silicone rubber in terms of hydrophobicity, resistance to UV and surface tracking performance in contaminated environments, chemical inertness, temperature stability and other key insulating properties. UltraSIL silicone rubber will not support biological growth (algae and mildew) and is non-flammable. A ground lead disconnector is optionally available for use on systems having 20 A or more of available fault current. The disconnector will sense and disconnect the ground terminal in the unlikely event of arrester failure, preventing a permanent system short circuit. A disconnector that has operated gives a visual indication of internal arrester damage and the need for arrester replacement. See Figure 2 for the disconnector operating characteristics. Customers looking to improve system reliability by minimizing wildlife related outages now have multiple options. In addition to the standard wildlife protector, featuring two self-adjusting "valve" style openings (see Figure 11 for a dimensional diagram) Eaton also offers the more robust line terminal wildlife guard. The line terminal wildlife guard is easily retrofitted to existing arrester installations and provides increased electrical insulation for the high voltage terminal of the arrester. The flexible design of the line terminal wildlife guard allows insertion of the lead wire through the bottom of the integral molded flanges. The access holes molded above the flanges will allow conductor sizes ranging from 0 to 0.50" in diameter (OD). The line terminal wildlife guard geometry allows water to shed away from the surface area of the wildlife guard while minimizing ice buildup and maintaining flexibility through extreme operating temperatures. Refer to Figure 12 for a dimensional diagram. For complete wildlife resistance, the ground terminal wildlife guard can easily be installed alongside the line terminal wildlife guard or standard wildlife protector. The ground terminal wildlife guard is a compact and economical guard that ensures wildlife is unable to come in contact with energized objects while on a grounded surface. See Figure 13 for a dimensional diagram. Operation The operation of the UltraSIL polymer-housed VariSTAR surge arrester is typical of gapless metal oxide arresters. During steady state conditions, line-to-ground voltage is continuously across the arrester terminals. When overvoltages occur, the surge arrester immediately limits the overvoltage to the required protective level by conducting only the necessary level of surge current to earth. Upon passage of the overvoltage condition, the surge arrester returns to its initial condition once again, conducting only minimal leakage current. Design testing The housing material, internal components and hardware work as a system and stand up to years of exposure to environmental extremes. To assure a superior level of performance, the components and the assembled arrester units have been subjected to a testing program that accurately simulates years of exposure to field conditions. Tests include: IEC 60099-4 Testing Full certification to performance requirements by an independent laboratory has been completed. See CP0606, IEC UHS 10 ka Certified Test Report, and CP0504 IEC UNS 5 ka Certified Test Reports for details. Additional reference documents are listed on page 17. Routine tests A complete automated production test program ensures a quality product. Each metal oxide varistor receives a series of electrical tests. Quality is further demonstrated by tests performed to destruction on samples from every lot of varistors. Listed are the varistor tests performed in accordance with IEC 60099-4: Physical Inspection Discharge Voltage V1mA/cm 2 Leakage Current at 80% of V1mA/cm 2 Voltage High Current, Short Duration Withstand Thermal Stability Aging Each fully assembled UltraSIL polymer-housed VariSTAR surge arrester must pass the following routine tests: Physical Inspection Reference Voltage Test UNS I ref = 3 ma UHS I ref = 4 ma Partial Discharge Test @ 1.05 x U c 10 pc General application recommendations The rating of an arrester is the maximum power frequency line-toground voltage at which the arrester is designed to pass the IEC operating duty test. Table 1 provides a general application guide for the selection of the proper arrester rating for a given system voltage and system grounding configuration. Gapless surge arresters must be selected with sufficient steadystate self impedance to withstand the application of line-toearth power frequency voltages under all system conditions of operation. 3
Catalog Data CA235029EN Effective February 2016 UltraSIL polymer-housed VariSTAR surge arresters Continuous voltage A preliminary selection that is based on selecting an arrester having a Continuous Operating Voltage, or U c, that equals or exceeds the normal system maximum line-to-earth operating voltage is made. Reference IEC 60099-5. Power-frequency overvoltages The second application criterion to be met is a condition established by the effectiveness of system grounding. During a single line-to-earth fault, under maximum system voltage conditions, the arrester selected should have a Rating (U r ) that will not be exceeded by the voltages on the unfaulted phases at the point of arrester application. One must pay particular attention to systems having low coefficients of grounding, ungrounded systems and systems that are resonant grounded or that may become ungrounded under abnormal conditions of operation. This second voltage consideration may be modified for various system conditions as long as the application does not violate the selected arrester s Temporary Overvoltage Capability (TOV) (see Figure 3). Temporary system conditions resulting in sinusoidal powerfrequency voltages that exceed arrester Continuous Operating Voltage, (U c ) or even Rating, (U r ) can be allowed. Consider the permissible magnitude and duration of these overvoltages (including the full time of system back-up protection), with appropriate allowances for any recent arrester discharge energies. The voltage withstand capability application on ungrounded systems is 1.035 per unit of COV (U c ) for 24 hours. Systems which permit earth faults to remain undetected or operate with one phase earthed for periods in excess of 24 hours will require the use of an arrester having a U c (continuous capability) equal to the system maximum phase-to-phase voltage. Under some special system conditions, such as transformer energization using certain types of connections and ferroresonance, higher voltages can be experienced by the arrester. Consult with your Eaton representative to have your individual system application needs reviewed. Performance test characteristics UltraSIL polymer-housed VariSTAR surge arresters meet the following design tests as described by IEC 60099-4: Operating Duty Test: UNS twenty (20) current surges of 5 ka, 8/20 µs waveshape followed by two (2) high current surges of 65 ka crest (4/10 µs). UHS twenty (20) current surges of 10 ka, 8/20 µs waveshape followed by two (2) high current surges of 100 ka crest (4/10 µs). Long Duration Current Impulse Withstand Test: UNS eighteen (18) current surges of 75 A, 1000 µs duration. UHS eighteen (18) current surges of the energy associated with the line parameters for IEC Class 1 performance (approximately 250 A, 2000 µs). Following each of these tests, the arresters remain thermally stable as verified by: Continually decreasing leakage current values during a thirty minute power monitoring period when energized at U c. No evidence of physical or electrical deterioration. The I n (5 ka or 10 ka) discharge voltage measured after each test changed less than 5% from the initial values. Full IEC 60099-4 certification has been completed and independently verified. Table 1. Commonly Applied Voltage Ratings (Ur) System Voltage Nominal Maximum Rating U r Four-Wire Star Multi- Grounded Neutral Three-Wire Star Solidly Grounded Neutral at Source 3.3 3.7 3 6 6 6.6 7.3 6 9 9 10.0 11.5 9 12 12-15 11.0 12.0 9-10 12 12-15 16.4 18.0 15 18-21 22.0 24.0 18-21 24 24-27 33.0 36.3 27-30 36 36-36 Delta, Ungrounded,& Resonant Impedance Grounded Star Pressure relief (fault current withstand tests) These tests demonstrate the ability to withstand fault currents for specific durations. All UltraSIL polymer-housed VariSTAR surge arresters have been tested in accordance with the requirements listed in IEC 60099-4 and are non-fragmenting to the levels shown in Table 2. Table 2. Pressure Relief Tests Type UNS/UHS IGNITION TIME (SECONDS) IEC Pressure Relief Class B 10.0 1.0 0.1 Fault Current Amplitude (ka rms) Sym. 0.8 20 Minimum Fault Current Duration (Seconds) 0.5 0.2 0.01 10 100 1000 10000 ARRESTER FAULT CURRENT (A rms) Figure 2. UNS and UHS disconnector operating characteristic. 4
UltraSIL polymer-housed VariSTAR surge arresters Catalog Data CA235029EN Effective February 2016 Temporary overvoltage (TOV) capability (power frequency withstand voltage versus time characteristic) The ability to withstand system power frequency overvoltage conditions is shown in Figure 3. The graph shows for a given voltage magnitude (on a per unit of U c basis), the time an arrester can survive a temporary power frequency overvoltage condition and recover without thermal runaway. Protective characteristics UltraSIL polymer-housed VariSTAR surge arresters provide excellent overvoltage protection for electrical equipment throughout the MV distribution system. The protective characteristics of the surge arrester family are shown in Tables 3 and 4. Voltage (per unit COV) 1.800 1.700 1.600 1.500 1.400 1.300 1.200 1.100 1.748 1.518 1.650 1.436 1.558 1.359 1.471 1.286 1.389 1.217 1.311 1.151 1.000 0.01 0.1 1 10 100 1000 10000 Time (sec) Prior Duty No Prior Duty 1.238 1.089 Figure 3. Temporary Overvoltage Capability (followed by Uc), 60 C ambient, UNS and UHS. The 24 hour TOV without prior duty is 1.173 per unit of Uc. The 24 hour TOV with prior duty is 1.035 per unit of Uc. Table 3. Protective Characteristics UNS, I n = 5 ka IEC 60099-4 Ur Rating Uc COV Steep Current Residual Voltage (kv Crest) Lightning Impulse Residual Voltage (kv Crest) 8/20 µs Current Wave 1.5 ka 3 ka 5 ka 10 ka 20 ka 40 ka 3 2.55 10.9 9.0 9.7 10.4 11.4 13.0 15.1 6 5.1 21.8 17.9 19.4 20.8 22.7 26.0 30.2 9 7.65 31.4 25.8 28.0 30.0 32.8 37.4 43.5 10 8.4 32.7 26.9 29.1 31.2 34.1 38.9 45.3 12 10.2 41.1 33.8 36.5 39.2 42.9 48.9 56.9 15 12.7 51.3 42.2 45.7 49.0 53.6 61.1 71.1 18 15.3 61.6 50.6 54.8 58.8 64.3 73.4 85.3 21 17.0 65.4 53.7 58.2 62.4 68.2 77.9 90.6 24 19.5 76.3 62.7 67.8 72.8 79.6 90.8 106.0 27 22.0 86.3 71.0 76.8 82.4 90.1 103.0 120.0 30 24.4 96.2 79.1 85.6 91.8 100.0 115.0 133.0 33 27.0 107.0 87.8 95.6 102.0 112.0 127.0 148.0 36 29.0 115.0 94.7 103.0 110.0 120.0 137.0 160.0 5
Catalog Data CA235029EN Effective February 2016 UltraSIL polymer-housed VariSTAR surge arresters Table 4. Protective Characteristics UHS, I n = 10 ka, Class 1 IEC 60099-4 U r Rating Uc MCOV Steep Current Residual Voltage (kv, peak) Insulation withstand characteristics Lightning Impulse Residual Voltage (kv crest) 8/20 μs Current Wave 30/60 Switching Surge 1.5 ka 3 ka 5 ka 10 ka 20 ka 40 ka 125 A 500 A 3 2.55 10.8 8.2 8.7 9.1 9.9 10.9 12.3 7.1 7.6 6 5.1 21.5 16.3 17.4 18.2 19.8 21.9 24.7 14.1 15.1 9 7.65 32.4 24.6 26.1 27.3 29.8 33.0 37.1 21.3 22.7 10 8.4 34.4 26.0 27.7 29.0 31.6 34.9 39.4 22.6 24.1 12 10.2 43.2 32.7 34.8 36.4 39.7 43.9 49.5 28.3 30.3 15 12.7 52.2 39.6 42.1 44.0 48.0 53.1 59.8 34.3 36.6 18 15.3 64.8 49.1 52.3 54.7 59.6 65.9 74.2 42.6 45.5 21 17 68.8 52.1 55.4 58.0 63.2 69.9 78.7 45.1 48.2 24 19.5 79.5 60.2 64.1 67.0 73.1 80.8 91.1 52.2 55.8 27 22 92.4 70.0 74.5 77.9 84.9 93.9 106 60.6 64.8 30 24.4 100.5 76.1 81.0 84.7 92.4 102 115 66.0 70.5 33 27 114.2 86.5 92.1 96.3 105 116 131 75.0 80.1 36 29 120.8 91.5 97.3 102 111 123 138 79.3 84.7 Table 5. Housing Insulation Withstand Voltages, U r 3-36 kv, UNS and UHS, I n = 5 & 10 ka Class 1 Mounting Configuration 105 mm 127 mm 105 mm 127 mm Housing Designation (Digits 6 & 7) Leakage Distance Strike (mm) (mm) 1.2/50µs Impulse (kv Crest) 1 min. Dry (kv rms) 1 min. Wet (kv rms) 1.2/50µs Impulse (kv Crest) 1 min. Dry (kv rms) 1 min. Wet (kv rms) 1.2/50µs Impulse (kv Crest) 1 min. Dry 1 min. Wet (kv rms) 1.2/50µs Impulse (kv Crest ) 1 min. Dry (kv rms) 1 min. Wet (kv rms) 1.2/50µs Impulse (kv Crest) 03 183 79 Dry 47 23 92 50 36 70 44 22 85 53 29 70 42 23 04 256 106 (kv rms) 56 34 105 55 38 79 52 33 99 56 37 82 51 33 05 330 133 104 64 43 117 63 51 89 55 42 109 60 49 90 62 45 06 404 159 117 78 55 126 86 57 93 61 48 119 80 58 97 72 55 07 477 186 129 87 66 137 96 68 98 62 51 122 81 60 107 81 66 08 551 213 140 96 77 148 106 79 104 65 55 126 82 65 118 89 78 09 625 239 159 116 90 130 83 70 129 98 89 10 698 266 171 126 100 136 86 75 140 106 99 11 772 293 183 135 111 142 90 80 152 114 109 12 846 320 195 144 121 149 94 86 164 122 119 13 919 346 207 153 131 158 99 92 177 130 128 14 993 373 220 161 140 167 105 98 190 138 137 15 1067 400 233 170 150 177 112 105 204 146 146 16 1140 426 246 178 159 187 120 112 218 154 154 17 1214 453 259 185 168 199 128 120 233 161 162 18 1288 480 248 169 169 19 1361 506 264 178 176 20 1435 533 280 184 183 21 1509 560 296 191 189 1 min. Dry (kv rms) 1 min. Wet 6
UltraSIL polymer-housed VariSTAR surge arresters Catalog Data CA235029EN Effective February 2016 Table 5a. Insulation Withstand Characteristics of Optional Insulated Mounting Bracket Insulated Mounting Bracket Standard For U r = 3 10 kv Standard For U r = 12 36 kv Bracket Mounting Length Center-to-Center (mm) Leakage Distance (mm) Strike (mm) Power Frequency Voltage Withstand (60 sec, Wet, kv) 105 150 71 36 70 127 226 99 48 80 1.2/50µs Impulse (kv Crest) Dimensions and clearances Outline drawings for common options are shown. Dimensions (shown in mm) for these arrangements are listed in Table 6. 30 30 DIAMETER (All Figures): I N = 5 ka, O = 83 mm I N = 10 ka, O = 89 mm 0-102 A MOUNTING HOLE FOR 1/2" or 12 mm O HARDWARE A 65 102-127 14 43 23 30 23 30 14 B Figure 4. UltraSIL polymer-housed VariSTAR surge arrester with optional insulated mounting bracket, and disconnector. B Figure 6. UltraSIL polymer-housed VariSTAR surge arrester as in Figure 4 with NEMA crossarm hanger, see Figure 8. 30 30 C RATED CANTILEVER STRENGTH IS 5 ka = 450 Nm 10 ka = 450 Nm H SPACING BETWEEN SHEDS IS 27 mm (All Ratings) MOUNTING HOLE FOR 1/2" or 12 mm O HARDWARE MAXIMUM PULL STRENGTH (Tension) IS 5,000 N. 28 28 14 B Figure 5. UltraSIL polymer-housed VariSTAR surge arrester without disconnector, for base or cable riser mounting (arrester may be horizontal or vertical with either end at line potential). Figure 7. UltraSIL polymer-housed VariSTAR surge arrester with optional disconnector mounting bracket (no disconnector). 7
Catalog Data CA235029EN Effective February 2016 UltraSIL polymer-housed VariSTAR surge arresters Table 6. Dimensional Data - UNS and UHS Table 7. Minimum Recommended Clearances U r 3-10 12-36 Housing Designation (Digits 6 & 7 Table 9) Dimensions - Figures 4-7 page 7 (mm) A B C H 03 162 105 146 140 04 190 105 174 168 05 218 105 202 196 06 246 105 230 224 07 272 105 255 249 08 300 105 283 277 06 246 127 230 224 07 272 127 255 249 08 300 127 283 277 09 325 127 308 302 10 353 127 336 330 11 381 127 364 358 12 406 127 390 384 13 434 127 418 412 14 462 127 446 440 15 488 127 471 465 16 499 17 527 18 555 19 583 20 611 21 639 U r Rating Clearances* Minimum Recommended (mm) UNS I n = 5 ka Phase-to- Ground Phase-to- Phase UHS I n = 10 ka Phase-to- Ground 3 70 95 76 108 6 95 127 102 140 9 127 165 133 178 10 127 165 133 178 12 146 184 152 197 15 165 210 171 222 18 229 273 235 286 21 229 273 235 286 24 267 324 273 337 27 267 324 273 337 30 267 324 273 337 33 318 400 324 413 36 318 400 324 413 Phase-to- Phase * All clearances are measured between centerlines of arresters or from centerline to earth. Table 8. Catalog Numbers VariSTAR Distribution-Class Surge s Rating With Isolator and Insulated Hanger (Figure 3) With Isolator, Insulated Hanger and NEMA Cross-Arm Bracket (Figure 4) With Insulated Hanger Without Isolator (Figure 6) 3 U*S0303AFDV1AA1 U*S0303AFDV1BA1 U*S0303AFAV1AA1 6 U*S0604AFDV1AA1 U*S0604AFDV1BA1 U*S0604AFAV1AA1 9 U*S0905AFDV1AA1 U*S0905AFDV1BA1 U*S0905AFAV1AA1 10 U*S1005AFDV1AA1 U*S1005AFDV1BA1 U*S1005AFAV1AA1 12 U*S1206AFDV1AA1 U*S1206AFDV1BA1 U*S1206AFAV1AA1 15 U*S1507AFDV1AA1 U*S1507AFDV1BA1 U*S1507AFAV1AA1 18 U*S1808AFDV1AA1 U*S1808AFDV1BA1 U*S1808AFAV1AA1 21 U*S2109AFDV1AA1 U*S2109AFDV1BA1 U*S2109AFAV1AA1 24 U*S2410AFDV1AA1 U*S2410AFDV1BA1 U*S2410AFAV1AA1 27 U*S2711AFDV1AA1 U*S2711AFDV1BA1 U*S2711AFAV1AA1 30 U*S3012AFDV1AA1 U*S3012AFDV1BA1 U*S3012AFAV1AA1 33 U*S3313AFDV1AA1 U*S3313AFDV1BA1 U*S3313AFAV1AA1 36 U*S3614AFDV1AA1 U*S3614AFDV1BA1 U*S3614AFAV1AA1 * Digit 2 Option: N = Normal-Duty, H = Heavy-Duty Note: All catalog numbers listed above include a universal wildlife protector. 8
UltraSIL polymer-housed VariSTAR surge arresters Catalog Data CA235029EN Effective February 2016 Table 9. UltraQUIK Catalog Numbering System for UltraSIL Polymer-Housed VariSTAR Surge s 1 2 3 4 5 6 7 U S 8 9 10 11 12 13 14 15 Catalog Number Digits: 1 = UltraSIL Polymer-Housed VariSTAR Surge U 2 = Class: N = In = 5 ka H = In = 10 ka, Class 1 3 = Type: S = VariSTAR 4 & 5 = Rating Ur (Uc): 03 = 3 kv (2.55 kv) 15 = 15 kv (12.7 kv) 27 = 27 kv (22.0 kv) 06 = 6 kv (5.1 kv) 18 = 18 kv (15.3 kv) 30 = 30 kv (24.4 kv) 09 = 9 kv (7.65 kv) 21 = 21 kv (17.0 kv) 33 = 33 kv (27.0 kv) 10 = 10 kv (8.4 kv) 24 = 24 kv (19.5 kv) 36 = 36 kv (29.0 kv) 12 = 12 kv (10.2 kv) 6 & 7 = Housing Options Per Rating Select from Table below. Ù = Standard Housing O = Housing Options Digits 6 & 7 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 Total Leakage Distance (mm) 183 256 330 404 477 551 625 698 772 846 919 993 1067 1140 1214 1288 1361 1435 1509 Rating 3 Ù O 6 Ù O O 9 Ù O O O 10 Ù O O O 12 Ù O O O O 15 Ù O O O O O 18 Ù O O O O O O 21 Ù O O O O O 24 Ù O O O O O O 27 Ù O O O O O O O 30 Ù O O O O O O O O 33 Ù O O O O O O O O 36 Ù O O O O O O O Notes: 1. Protected leakage distance is approximately 45% of total leakage distance (mm). 2. Total leakage distance shown includes 40 mm of the insulated base/mounting bracket. 9
Catalog Data CA235029EN Effective February 2016 UltraSIL polymer-housed VariSTAR surge arresters Table 9. UltraQUIK Catalog Numbering System for UltraSIL Polymer-Housed VariSTAR Surge s (continued) 1 2 3 4 5 6 7 U S 8 9 10 11 12 13 14 15 8 = Line Stud and Lead Options: 12 mm Line Terminal Options all threaded studs are 12 mm x 30 mm long (except options L and M), stainless steel. A = without line lead B = with 300 mm long, 5 mm diameter E = with 450 mm long, 5 mm diameter H = with 750 mm long, 5 mm diameter insulated lead wire insulated lead wire insulated lead wire C = with 300 mm long, 5 mm diameter F = with 450 mm long, 5 mm diameter J = with 750 mm long, 5 mm diameter insulated lead wire having insulated lead wire having insulated lead wire having (1) ring terminal (1) ring terminal (1) ring terminal D = with 300 mm long, 5 mm diameter G = with 450 mm long, 5 mm diameter K = with 750 mm long, 5 mm diameter insulated lead wire having insulated lead wire having insulated lead wire having (2) ring terminals (2) ring terminals (2) ring terminals L = with 45 mm long stud, without insulated lead wire (will not allow use of universal wildlife protector) M = with 65 mm long stud, without insulated lead wire (will not allow use of universal wildlife protector) 3/8" Line Terminal Options all threaded studs are 3/8" x 1-3/16" long, stainless steel. 0 = without line lead 9 = Line Terminal Accessories 1 = with 12" #6 AWG insulated lead wire 4 = with 18" #6 AWG insulated lead wire 7 = with 30" #6 AWG insulated lead wire 2 = with 12" #6 AWG insulated lead 5 = with 18" #6 AWG insulated lead 8 = with 30" #6 AWG insulated lead wire having (1) ring terminal wire having (1) ring terminal wire having (1) ring terminal 3 = with 12" #6 AWG insulated lead 6 = with 18" #6 AWG insulated lead 9 = with 30" #6 AWG insulated lead wire having (2) ring terminals wire having (2) ring terminals wire having (2) ring terminals All line terminal accessory hardware is stainless steel (12 mm or 3/8" Ø, as required for digit 8) 45/65 mm C = No Hardware F= Nut, Wire Clamp & Universal L = 2 each: Nuts, Flat Washers & R = Nut & Wire Clamp Wildlife Protector Lock Washers (Requires L or M in Digit 8) S = Nut, Lock Washer & T = Nut, Lock Washer (Also for U = Nut & 2 Wire Clamps V = Wire clamp, Nut, & Flat Washer Universal Wildlife Protector leads with ring terminals, see (Also for leads with ring Digit 8) terminals, see Digit 8) Notes: 1. Wire clamps F, R, and U will accommodate #10 solid to 2/0 AWG or to 4 mm solid diameter wire. Wire clamp V will accommodate 6 mm solid or up to 14 mm diameter stranded conductor. 2. Maximum allowable torque on line terminal is 27 Nm. 3. The universal wildlife protector may only be used with 30 mm or 1-3/16 length stud. 10
UltraSIL polymer-housed VariSTAR surge arresters Catalog Data CA235029EN Effective February 2016 Table 9. UltraQUIK Catalog Numbering System for UltraSIL Polymer-Housed VariSTAR Surge s (continued) 1 2 3 4 5 6 7 U S 8 9 10 11 12 13 14 15 10 = Ground Terminal Options 12 mm ground terminal options With ground lead disconnector and stainless steel stud length of D = 12 mm Ø x 25 mm (Requires 1 in digit 12) Without ground lead disconnector, stainless steel stud length of A = 12 mm Ø x 30 mm B = 12 mm Ø x 45 mm C = 12 mm Ø x 65 mm 3/8" ground terminal options With ground lead disconnector and stainless steel stud length of 1 = 3/8" Ø x 1" (Requires "1" in digit 12) Without ground lead disconnector, stainless steel stud length of 0 = 3/8" Ø x 1-3/16" 11 = Ground Terminal Hardware All ground terminal accessory hardware is stainless steel (12 mm or 3/8" Ø, as required for digit 10) B = No Hardware V = Wire Clamp and Nut W = Washer, (Shown with optional discon- (Shown with optional Lock Washer, and Nut nector and Insulated mounting disconnector and bracket) Insulated mounting bracket) Note: Maximum allowable torque on ground terminal is 27 Nm. 12 = Bracket Configurations 0 = Base Mounted 1 = Insulated Mounting Bracket 2 = Conductive Mounting Bracket 3 = Conductive Mounting Bracket (Required with optional For 3/8" Hardware For 12 mm Hardware disconnector) (Requires 0 in Digit 10 and (Requires A, B or C in (Available only if Digits 6 & 7 are W in Digit 11 ) Digit 10 and W in Digit 11) Housing Options 15 or less*) See Figure 10 for dimensional See Figure 11 for dimensional * For more information contact information. information. your Eaton representative. 13 = Mounting Options A = Without a Mounting Bracket B = NEMA Crossarm Hanger (Mounting Hardware Included) (Requires "1", "2" or "3" in Digit 12) See Figure 8 for dimensional information. 11
Catalog Data CA235029EN Effective February 2016 UltraSIL polymer-housed VariSTAR surge arresters Table 9. UltraQUIK Catalog Numbering System for UltraSIL Polymer-Housed VariSTAR Surge s (continued) 1 2 3 4 5 6 7 U S 8 9 10 11 12 13 14 15 12 & 13 = Double Digit Mounting Options with Ground Terminal Wildlife Guard E8 = Ground Terminal Wildlife Guard, Insulated Hanger (Shown with optional isolator), NEMA cross-arm bracket ( Mounting Hardware Included) Refer to Figures 8 and 13 for dimensional information 14 = Nameplate Information, See Figures 13 and 14 Nameplate information is per IEC 60099-4. Auxiliary nameplates are available in the following languages: A = English B = Español Mexico C = Español Americas D = Português Americas E = Espa ñol Europa F = Português Europa G = Polski H = Français I = Norsk J = Suomeksi K = Greek L = Italiano M = Russian 15 = Packaging. 1 = Individual carton. Each arrester with accessories is shipped in an individual cardboard carton. Individual cartons are packed within a heavy duty quadwall carton having a skid bottom and suitable for double stacking within an ocean shipping container. 2 = Individual carton. Each arrester is shipped in an individual cardboard carton. Individual cartons are stacked on a pallet and shrink wrapped, suitable for shipment within NAFTA. Quantities per pallet may be adjusted to meet shipping requirements. 12
UltraSIL polymer-housed VariSTAR surge arresters Catalog Data CA235029EN Effective February 2016 Accessories for the UltraSIL polymer-housed VariSTAR surge arrester 1.25 ZERO To 4.00.344 6.75 4.50.438 SQUARE 4.12 To 5.15 1 /2" HARDWARE.438 SQUARE HOLE 2.56.500 3 /8" HARDWARE 1.50 Figure 8. NEMA crossarm hanger can be specified with a "B" in digit 13 (all dimensions are as required to be in inches, per NEMA ). 13 114 170 9 13 114 170 32 32 11 SQUARE HOLE (2) 13 mm O 11 SQUARE 8 13 GALVANIZED STEEL (All dimensions in mm) 8 13 GALVANIZED STEEL (All dimensions in mm) Figure 9. Conductive base mounting for use with 3/8 hardware. Can be specified with a "2" in digit 12. (Requires 0, "A", "B", or "C" in digit 10, W in digit 11.) Figure 10. Conductive base mounting for use with 12 mm hardware. Can be specified with a "3" in digit 12. (Requires "0", A, B or C in digit 10, W in digit 11.) 13
Catalog Data CA235029EN Effective February 2016 UltraSIL polymer-housed VariSTAR surge arresters 20 UNIVERSAL VALVE OPENING UNIVERSAL VALVE OPENING 56 64 SLOTS MAY BE CUT HERE 26 UNIVERSAL VALVE OPENING 152 SIDE VIEW (All dimensions in mm) TOP VIEW Figure 11. Universal wildlife protector for line terminal (catalog number AV346X1C) adds 5 mm to arrester height above line terminal stud. To be used only with 3/8" or 12 mm Ø line hardware of standard length, 1-3/16" and 30 mm respectively. 199 12 ø 75 50 53 42 96 Figure 12. Optional line terminal wildlife guard (catalog number AV698X1C). (All dimensions in mm.) 87 80 Figure 13. Optional ground terminal wildlife guard (catalog number AV731X1C). (All dimensions in mm.) Left shows attachment of ground terminal wildlife guard, right images shows ground terminal wildlife guard completely installed. 14
UltraSIL polymer-housed VariSTAR surge arresters Catalog Data CA235029EN Effective February 2016 UNS RATING (U r ) kv MMYY 5 ka MCOV (U c ) kv Assembled in Mexico UltraSIL VariSTAR DIST. ARRESTER Figure 14. In = 5 ka, UNS Nameplate stamped in stainless steel top cap. VARISTAR SURGE ARRESTER ULTRASIL TYPE UNS-ZNO IN = 5 ka IEC 60099-4 P.R. = 20 ka sym (ENGLISH) PARARRAYOS VARISTAR TIPO ULTRASIL UNS-ZNO IN = 5 ka CEI 60099-4 (ESPANOL - EUROPA) Ur = kv Uc = kv AdP = 20 ka sim APARTARRAYOS VARISTAR TIPO ULTRASIL UNS-ZNO IN = 5 ka IEC 60099-4 (ESPANOL - MEXICO) Ur = kv Uc = kv AdP = 20 ka sim DESC. DE SOBRET. VARISTAR TIPO ULTRASIL UNS-ZNO IN = 5 ka IEC 60099-4 (PORTUGUEˆS - EUROPA) LdeS = 20 ka sim PARARRAYOS VARISTAR TIPO ULTRASIL UNS-ZNO IN = 5 ka IEC 60099-4 (ESPANOL - AMERICAS) Ur = kv Uc = kv AdP = 20 ka sim OGRANICZNIK PRZEPIEC VARISTAR ULTRASIL TYP UNS-ZNO IN = 5 ka IEC 60099-4 Pr = 20 ka sym (POLSKI) PARA-RAIOS VARISTAR TIPO ULTRASIL UNS-ZNO IN = 5 ka IEC 60099-4 (PORTUGUEˆS - AMERICAS) Ur = kv Uc = kv Sp = 20 ka sim PARAFOUDRE VARISTAR MODELE ULTRASIL UNS-ZNO IN = 5 ka CEI 60099-4 (FRANÇAIS) Ur = kv Uc = kv LdP = 20 ka sym VARISTAR OVERSPENNINGSAVLEDER ULTRASIL TYPE UNS-ZNO IN = 5 ka IEC 60099-4 KORTSLUTTKAP = 20 ka sym (NORSK) ALEXIKEPAYNO M.T. VARISTAR TYPOS ULTRASIL UNS - ZNO IN =5 ka KLASH 1 IEC 60099-4 EKT PIES = 20 ka Sym (GREEK) VARISTAR YLIJÄNNITESUOJA ULTRASIL TYYPPI UNS-ZNO IN = 5 ka IEC 60099-4 RTV = 20 ka sym (SUOMEKSI) SCARICATORE M.T. VARISTAR TIPO ULTRASIL UNS-ZNO IN = 5 ka CEI 60099-4 P.R. = 20 ka sym (ITALIANO) (RUSSIAN) Figure 15. In = 5 ka, UNS Auxiliary Nameplates. 15
Catalog Data CA235029EN Effective February 2016 UltraSIL polymer-housed VariSTAR surge arresters UHS RATING (Ur) kv 10 ka MCOV (Uc) kv MMYY Assembled in Mexico UltraSIL VariSTAR DIST. ARRESTER Figure 16. In = 10 ka, Class 1, UHS Nameplate stamped in stainless steel top cap. VARISTAR SURGE ARRESTER ULTRASIL TYPE UHS-ZNO IN = 10 ka CLASS 1 IEC 60099-4 P.R. = 20 ka sym (ENGLISH) PARARRAYOS VARISTAR TIPO ULTRASIL UHS-ZNO IN = 10 ka CLASE 1 CEI 60099-4 (ESPANOL - EUROPA) Ur = kv Uc = kv AdP = 20 ka sim APARTARRAYOS VARISTAR TIPO ULTRASIL UHS-ZNO IN = 10 ka CLASE 1 IEC 60099-4 (ESPANOL - MEXICO) Ur = kv Uc = kv AdP = 20 ka sim DESC. DE SOBRET. VARISTAR TIPO ULTRASIL UHS-ZNO IN = 10 ka CLASSE 1 IEC 60099-4 LdeS = 20 ka sim (PORTUGUEˆS - EUROPA) PARARRAYOS VARISTAR TIPO ULTRASIL UHS-ZNO Ur = kv Uc = kv IN = 10 ka CLASE 1 IEC 60099-4 AdP = 20 ka sim (ESPANOL - AMERICAS) OGRANICZNIK PRZEPIEC VARISTAR ULTRASIL TYP UHS-ZNO IN = 10 ka KLASA 1 IEC 60099-4 Pr = 20 ka sym (POLSKI ) PARA-RAIOS VARISTAR TIPO ULTRASIL UHS-ZNO IN = 10 ka CLASSE 1 IEC 60099-4 (PORTUGUEˆS - AMERICAS) Ur = kv Uc = kv Sp = 20 ka sim PARAFOUDRE VARISTAR MODELE ULTRASIL UHS-ZNO IN = 10 ka CLASSE 1 IEC 60099-4 (FRANÇAIS) Ur = kv Uc = kv LdP = 20 ka sym VARISTAR OVERSPENNINGSAVLEDER ULTRASIL TYPE UHS-ZNO IN =10 ka KLASSE 1 IEC 60099-4 KORTSLUTTKAP = 20 ka sym (NORSK) VARISTAR YLIJÄNNITESUOJA ULTRASIL TYYPPI UHS-ZNO IN = 10 ka LUOKKA 1 IEC 60099-4 RTV = 20 ka sym (SUOMEKSI) ALEXIKEPAYNO M.T. VARISTAR TYPOS ULTRASIL UHS - ZNO IN = 10 ka IEC 60099-4 EKT PIES = 20 ka Sy m (GREEK) SCARICATORE M.T. VARISTAR TIPO ULTRASIL UHS-ZNO IN = 10 ka CLASSE 1 IEC 60099-4 P.R. = 20 ka sym (ITALIANO) (RUSSIAN) Figure 17. In = 10 ka, Class 1, UHS Auxiliary Nameplates. 16
Surge s Catalog Data CA235005EN Effective May 2015 Supersedes March 2015 COOPER POWER SERIES UltraSIL polymer-housed VariSTAR IEEE surge arresters; normal-duty (5 ka), heavyduty, and riser pole (10 ka) for MV systems to 36 kv General Eaton has set the standard for design, manufacturing and delivery of polymeric distribution-class arresters with its Cooper Power series UltraSIL polymer-housed arrester family. UltraSIL polymer-housed surge arresters incorporate the industry recognized superior polymer housing material silicone rubber. Eaton's Cooper Power series VariSTAR distribution-class surge arresters are part of the UltraSIL polymer-housed surge arrester product line. VariSTAR surge arresters are available in Normal-Duty, Heavy-Duty and Riser Pole classifications and provide superior overvoltage protection for any electric distribution system. Construction The patented construction of UltraSIL polymerhoused arresters begins with Metal Oxide Varistors (MOVs) manufactured at our Olean, NY facility. Manufacturing our own MOVs allows for strict quality control over all aspects of disk production. Every MOV must pass a series of physical and electrical tests designed to ensure that only disks meeting strict quality standards are used in UltraSIL arresters. Eaton's MOV disk design has proven its reliability and protective ability through many years of field service. The MOV disks are combined with aluminum end electrodes and are encapsulated in a high-strength composite wrap insulating material on our fully automated assembly line using strict quality control processes that eliminate manufacturing variances. The composite collar is cured to the MOV disk stack to form a solid insulation MOV disk module system that is inserted and bonded to the industry leading track resistant UltraSIL silicone rubber housing. Eaton's exclusive patented manufacturing process forms a secondary moisture seal under the primary silicone rubber housing seal, which makes the arrester impervious to moisture and capable of withstanding extreme electrical, environmental and cantilever load conditions. The composite wrapped UltraSIL polymer-housed arrester design represents a quantum leap in polymer arrester technology. Following assembly, each arrester is subjected to a battery of electrical tests to assure the highest quality and in-service field performance.
Catalog Data CA235005EN Effective May 2015 UltraSIL polymer-housed VariSTAR surge arresters LINE TERMINAL 3/8 INCH STAINLESS STUD ALUMINUM GROUND ELECTRODE OPTIONAL ISOLATOR GROUND LEAD DISCONNECTOR Features NAMEPLATE INFORMATION STAINLESS STEEL TOP CAP ALUMINUM LINE ELECTRODE UltraSIL SILICONE RUBBER HOUSING METAL OXIDE VARISTAR (MOV) DISKS GROUND TERMINAL 3/8 INCH STAINLESS STUD BONDED SOLID INTERFACE FIBERGLASS REINFORCED EPOXY COMPOSITE kv RATING LABEL (Visible from ground) OPTIONAL INSULATED HANGER Figure 1. Cutaway illustration of VariSTAR distribution-class arrester. UltraSIL silicone rubber polymer-housing has undergone a wide range of design tests to determine the optimum shed configuration. In addition, long term environmental testing has verified the lifetime superiority of silicone rubber when compared to other polymeric insulating materials. Independent laboratory tests have verified the superiority of silicone rubber in terms of non-wetting surfaces, resistance to UV degradation and surface tracking, performance in contaminated environments, chemical inertness, temperature stability and other important insulating properties. UltraSIL silicone rubber polymerhousing will not support biological growth (algae and mildew), is non-flammable and will not support combustion. An optional insulated mounting base is available to allow connecting to a wide variety of brackets. The insulated base, made of glass filled polyester, has been designed to provide needed mechanical strength for installation and severe loading conditions. A ground lead isolator is also available. The isolator removes the ground terminal from the arrester in the unlikely event of arrester failure, thus preventing a permanent system fault. An isolator that has operated gives visual indication of internal damage to the arrester and the need for arrester replacement. See Figure 2 for the isolator operating characteristics. The optional universal wildlife protector has two self-adjusting "valve" style openings which vary from 0 to 0.75" in diameter, thus allowing for a large variety of conductor/insulation sizes while providing optimum wildlife protection. (See page 11, Figure 8 for a dimensional diagram.) Customers looking to improve system reliability by minimizing wildlife related outages now have multiple options. In addition to the universal wildlife protector featuring two self-adjusting "valve" style openings, Eaton also offers the more robust line terminal wildlife guard. The line terminal wildlife guard is easily retrofitted to existing arresters installations and provides increased electrical insulation for the high-voltage terminal of the arrester. The flexible design of the line terminal wildlife guard allows insertion of the lead wire through the bottom of the integral molded flanges. The access holes molded above the flanges will allow conductor sizes ranging from 0 to 0.50 in diameter (OD). The line terminal wildlife guard geometry allows water to shed away from the surface area of the animal guard while minimizing ice build up and maintaining flexibility through extreme operating temperatures. (Refer to page 11, Figure 9 for a dimensional diagram.) For complete wildlife resistance, the ground terminal wildlife guard can easily be installed alongside the line terminal wildlife guard or universal wildlife protector. The ground terminal wildlife guard is a compact and economical guard that ensures wildlife is unable to come in contact with energized objects while on a grounded surface.(refer to page 11, Figure 10 for a dimensional diagram.) Operation The operation of VariSTAR arresters is typical of gapless metal oxide arresters. During steady state conditions, line-to-ground voltage is applied continuously across the arrester terminals. When surges occur, VariSTAR arresters immediately limits the overvoltage to the required protective level by conducting the surge current to ground. Upon passage of the surge, the arrester returns to its initial state, conducting minimal leakage current. The protective characteristics of VariSTAR arresters provide excellent overvoltage protection for distribution system equipment. (See page 6 for protective characteristics.) Design testing The housing material, internals and hardware work together as a system and must stand up to years of exposure to environmental extremes. To assure a superior level of performance, both the components and the assembled arrester units have been subjected to a program of testing that accurately simulates years of exposure to actual field conditions. Testing includes: IEEE Std C62.11-2005 standard Testing Full certification to the performance requirements by an independent laboratory. A certified test report is available under Bulletin Number 95062. Additional reference documents are listed on page 14. Production tests A complete production test program ensures a quality product. Each metal oxide varistor receives a series of electrical tests. Quality is demonstrated by a series of destructive tests performed on every batch of varistors. Listed are the tests performed on the varistors: 100% Physical Inspection 100% Discharge Voltage test 100% V1mA/cm 2 100% Leakage Current at 80% of V1mA/cm 2 Voltage (Watts Loss) Batch High-current, Short-duration test Batch Thermal Stability test Batch Aging test Each fully assembled VariSTAR arrester must pass the following production tests: 100% Physical Inspection 100% Leakage Current test 100% Partial Discharge Inception Voltage test 2
UltraSIL polymer-housed VariSTAR surge arresters Catalog Data CA235005EN Effective May 2015 General application recommendations The rating of an arrester is the maximum power frequency lineto-ground voltage at which the arrester is designed to pass an operating duty-cycle test. Table 1 provides a general application guide for the selection of the proper arrester rating for a given system voltage and system grounding configuration as outlined in the IEEE Std C62.22 standard application guide. Under fault conditions and other system anomalies, higher voltages can be experienced by the arrester. To ensure that the arrester ratings will not be exceeded, Eaton application engineers are available to make recommendations. The following information is normally required: 1. System maximum operating voltage. 2. System grounding conditions. A. For four-wire circuits, grounding conditions depend upon whether the system is multi-grounded, whether it has a neutral impedance and whether common primary and secondary neutrals are used. B. For three-wire circuits, grounding conditions depend upon whether the system is solidly grounded at the source, grounded through neutral impedance at the source transformers or ungrounded. Consult your Eaton representative to have your individual system application needs reviewed. Performance test characteristics VariSTAR distribution-class arresters withstand the following design tests as described by IEEE Std C62.11-2005 standard: Duty Cycle: Normal-Duty: 22 current surges of 5 ka crest, 8/20 µs waveshape. Heavy-Duty and Riser Pole: 20 current surges of 10 ka crest, 8/20 µs waveshape followed by 2 current surges of 40 ka crest, 8/20 µs waveshape. High-current, Short-duration Discharge: Normal-Duty: 2 current surges of 65 ka crest, 4/10 µs waveshape. Heavy-Duty and Riser Pole: 2 current surges of 100 ka crest, 4/10 µs waveshape. Low-Current, Long-Duration Discharge: Normal-Duty: 20 current surges of 75 A crest 2000 µs duration rectangular wave. Heavy-Duty and Riser Pole: 20 current surges of 250 A crest 2000 µs duration rectangular wave. Following each of these tests, the arresters remain thermally stable as verified by: Continually decreasing power values during a thirty minute power monitoring period. No evidence of physical or electrical deterioration. The 5 ka (normal-duty) or 10 ka (heavy-duty and riser pole) discharge voltages measured after each test changed less then 10% from the initial values. Table 1. Commonly Applied Voltage Ratings of VariSTAR s System Voltage Nominal Maximum In addition, full IEEE Std C62.11-2005 standard certification has been completed and verified. Fault current withstand tests Recommended Rating per IEEE Std C62.22 standard Four-Wire Wye Multi- Grounded Neutral Three-Wire Wye Solidly Grounded Neutral 2.4 2.54 3 4.16Y/2.4 4.4Y/2.54 3 6 6 4.16 4.4 6 4.8 5.08 6 6.9 7.26 9 8.32Y/4.8 8.8Y/5.08 6 9 12.0Y/6.93 12.7Y/7.33 9 12 12.47Y/7.2 13.2Y/7.62 9 15 13.2Y/7.62 13.97Y/8.07 10 15 13.8Y/7.97 14.52Y/8.38 10 15 13.8 14.52 18 20.78Y/12.0 22Y/12.7 15 21 22.86Y/13.2 24.2Y/13.87 18 24 23 24.34 30 24.94Y/14.4 26.4Y/15.24 18 27 27.6Y/15.93 29.3Y/16.89 21 30 34.5Y/19.92 36.5Y/21.08 27 36 46Y/26.6 48.3Y/28 36 Delta and Ungrounded Wye Fault current withstand tests demonstrate the ability to withstand fault currents for specific durations without expelling any internal components. All VariSTAR arrester designs have been tested in accordance with the requirements listed in IEEE Std C62.11-2005 standard, and are non-fragmenting to the levels shown in Table 2. Table 2. Fault Current Withstand Tests Fault Current Amplitude (ka rms) IGNITION TIME (SECONDS) 0.6 60 20 12 10.0 1.0 0.1 Fault Current Duration (cycles) 0.01 10 100 1000 10000 ARRESTER FAULT CURRENT (A rms) Figure 2. Isolator operating characteristic. 3
Catalog Data CA235005EN Effective May 2015 UltraSIL polymer-housed VariSTAR surge arresters Table 3. Insulation Withstand Characteristics of Optional Insulated Mounting Bracket Insulated Mounting Bracket Bracket Mounting Length Center-to-Center (in) Leakage Distance (in) Strike (in) Power Frequency Voltage Withstand (60 sec, Wet, kv) Standard For Rating 3-10 kv 4.1 5.9 2.8 36 70 Standard For Rating 12-36 kv 5 8.9 3.9 48 80 1.2/50 μs Impulse (kv Crest) Dimensions and clearances Outline drawings for several common design options are shown in Figures 3-6. Dimensions for these designs are listed in Table 3. LINE TERMINAL A A DIAMETER: HEAVY DUTY = 3.5" NORMAL DUTY = 3.4 RISER POLE = 3.6 1.75" MOUNTING HOLE FOR 1 / 2" HARDWARE B D 1.75" 0.56" GROUND STRAP B Figure 3. VariSTAR arrester with isolator and insulated hanger. 0"-4" Figure 5. VariSTAR arrester with isolator, insulated hanger and transformer mounting bracket. 4.12"-5.15" C A 2.56" 1.7" MOUNTING HOLE FOR 1/ 2 " HARDWARE B 1.75" 0.56" B Figure 4. VariSTAR arrester with isolator, insulated hanger and NEMA cross-arm bracket. Figure 6. VariSTAR arrester with insulated hanger without isolator. 4
UltraSIL polymer-housed VariSTAR surge arresters Catalog Data CA235005EN Effective May 2015 Table 4. Dimensional Data VariSTAR s Rating Standard Housing Code (Digits 6 & 7 Table 10) Dimensions Figures 3-6, page 4 (Inches) Insulation characteristics A+ B C+ D The insulation characteristics of VariSTAR arrester family are shown in Table 5. Table 5. Housing Insulation Withstand Voltages of VariSTAR s Minimum Recommended Clearances* (in.) Heavy-Duty Normal-Duty Phase-to- Ground Phase-to- Phase Phase-to- Ground 3 3 6.9 4.1 5.5 8.7 3 4.25 2.75 3.75 6 4 7.9 4.1 6.5 8.7 4 5.5 3.75 5 9 5 9.0 4.1 7.6 8.7 5.25 7 5 6.5 10 5 9.0 4.1 7.6 8.7 5.25 7 5 6.5 12 6 10.0 5 8.6 8.7 6 7.75 5.75 7.25 15 7 11.1 5 9.7 8.7 6.75 8.75 6.5 8.25 18 8 12.2 5 10.8 8.7 9.25 11.25 9 10.75 21 9 13.2 5 11.8 8.7 9.25 11.25 9 10.75 24 10 14.3 5 12.9 8.7 10.75 13.25 10.5 12.75 27 11 15.3 5 13.9 14.3 10.75 13.25 10.5 12.75 30 12 16.4 5 15 14.3 10.75 13.25 10.5 12.75 33 13 17.5 5 16.1 14.3 12.75 16.25 12.5 15.75 36 14 18.5 5 17.1 14.3 12.75 16.25 12.5 15.75 * All clearances are measured from center line of arrester per IEEE Std C62.22 standard. + With optional Wildlife Protector add 0.2 inches. Mounting Configuration Phase-to- Phase 4.1" 5.0" 4.1" 5.0" Housing Code Digits (6 & 7) Creep Distance (in.) Strike (in.) 1.2/50 µs Impulse (kv crest) 1 Min. Dry 10 sec. Wet 1.2/50 µs Impulse (kv crest) 1 Min. Dry 10 sec. Wet 3 7.2 3.1 78 47 24 92 50 37 70 44 24 85 53 30 70 42 24 4 10.1 4.2 91 56 36 105 55 39 79 52 34 99 56 39 82 51 33 5 13 5.2 104 64 45 117 63 52 89 55 44 109 60 52 90 62 46 6 15.9 6.3 117 78 57 126 86 59 93 61 58 119 80 59 97 72 56 7 18.8 7.3 129 87 68 137 96 71 98 62 59 122 81 63 107 81 69 8 21.7 8.4 140 96 79 148 106 83 104 65 61 126 82 67 118 89 81 9 24.6 9.4 152 105 89 159 116 94 110 68 63 130 83 72 129 98 93 10 27.5 10.5 164 114 100 171 126 105 117 72 67 136 86 78 140 106 105 11 30.4 11.5 176 123 110 183 135 116 125 77 71 142 90 83 152 114 116 12 33.3 12.6 189 131 120 195 144 127 133 82 75 149 94 89 164 122 126 13 36.2 13.6 201 139 130 207 153 137 142 88 81 158 99 96 177 130 136 14 39.1 14.7 215 148 140 220 161 147 152 94 87 167 105 102 190 138 145 15 42 15.8 228 155 150 233 170 157 162 101 93 177 112 109 204 146 153 16 44.9 16.8 242 183 158 246 178 167 173 109 101 187 120 117 218 154 162 17 47.8 17.8 255 171 169 259 185 176 185 117 109 199 128 125 233 161 169 1.2/50 µs Impulse (kv crest) 1 Min. Dry 10 sec. Wet 1.2/50 µs Impulse (kv crest) 1 Min. Dry 10 sec. Wet 1.2/50 µs Impulse (kv crest) 1 Min. Dry 10 sec. Wet 5
Catalog Data CA235005EN Effective May 2015 UltraSIL polymer-housed VariSTAR surge arresters Protective characteristics VariSTAR distribution-class arresters provide excellent overvoltage protection for electrical equipment throughout distribution systems. The protective characteristics of the VariSTAR arrester family are shown in Tables 6, 7, and 8. Table 6. Protective Characteristics VariSTAR Normal-Duty (UNS) Rating MCOV Equivalent Front-of-wave Protective Level* (kv crest) Maximum Discharge Voltage (kv crest) 8/20 µs Current Wave 1.5 ka 3 ka 5 ka 10 ka 20 ka 40 ka 3 2.55 11 9 9.7 10.4 11.4 13 15.1 6 5.1 22 18.0 19.4 20.8 22.7 26 30.2 9 7.65 31.7 26.0 28 30 32.8 37.4 43.5 10 8.4 33 27.0 29.1 31.2 34.1 38.9 45.3 12 10.2 41.5 33.9 36.6 39.2 42.9 48.9 56.9 15 12.7 51.8 42.4 45.7 49 53.6 61.1 71.1 18 15.3 62.2 50.9 54.9 58.8 64.3 73.4 85.3 21 17 66 54.0 58.2 62.4 68.2 77.9 90.6 24 19.5 77 63.0 67.9 72.8 79.6 90.8 106 27 22 87.2 71.4 76.9 82.4 90.1 103 120 30 24.4 97.1 79.5 85.7 91.8 100 115 133 33 27 108 87.8 95.1 102 112 127 148 36 29 116 95.3 103 110 120 137 160 * Based on 5 ka current impulse that results in a discharge voltage cresting in 0.5 µs. Table 7. Protective Characteristics VariSTAR Heavy-Duty (UHS) Rating MCOV Equivalent Front-of-wave Protective Level* (kv crest) Maximum Discharge Voltage (kv crest) 8/20 µs Current Wave 1.5 ka 3 ka 5 ka 10 ka 20 ka 40 ka 3 2.55 11 8.2 8.7 9.1 9.9 10.9 12.3 6 5.1 21.9 16.3 17.4 18.2 19.8 21.9 24.7 9 7.65 33 24.6 26.1 27.3 29.8 33 37.1 10 8.4 35 26 27.7 29 31.6 34.9 39.4 12 10.2 43.9 32.7 34.8 36.4 39.7 43.9 49.5 15 12.7 53.1 39.6 42.1 44 48 53.1 59.8 18 15.3 66 49.1 52.3 54.7 59.6 65.9 74.2 21 17 70 52.1 55.4 58 63.2 69.9 78.7 24 19.5 80.9 60.2 64.1 67 73.1 80.8 91.1 27 22 94 70 74.5 77.9 84.9 93.9 106 30 24.4 102 76.1 81 84.7 92.4 102 115 33 27 116 86.5 92.1 96.3 105 116 131 36 29 123 91.5 97.3 102 111 123 138 * Based on 10 ka current impulse that results in a discharge voltage cresting in 0.5 µs. Table 8. Protective Characteristics VariSTAR Riser Pole (URS) Rating MCOV Equivalent Front-of-wave Protective Level* (kv crest) Maximum Discharge Voltage (kv crest) 8/20 µs Current Wave 1.5 ka 3 ka 5 ka 10 ka 20 ka 40 ka 3 2.55 10.3 7.7 8.2 8.6 9.4 10.3 11.7 6 5.1 20.7 15.5 16.4 17.2 18.7 20.7 23.3 9 7.65 29.8 22.3 23.7 24.7 27 29.8 33.6 10 8.4 31 23.2 24.6 25.7 28.1 31 35 12 10.2 39.1 29.2 31.1 32.4 35.4 39.1 44.1 15 12.7 48.7 36.4 38.7 40.4 44.1 48.8 54.9 18 15.3 58.4 43.7 46.4 48.5 52.9 58.5 65.9 21 17 62 46.4 49.3 51.5 56.2 62.1 70 24 19.5 72.3 54.1 57.5 60 65.5 72.4 81.6 27 22 81.4 60.9 64.7 67.6 73.8 81.6 91.9 30 24.4 91 68.1 72.4 75.6 82.5 91.2 103 33 27 100 75 79.7 83.3 90.9 100 113 36 29 108 80.6 85.6 89.4 97.6 108 122 * Based on 10 ka current impulse that results in a discharge voltage cresting in 0.5 µs. 6