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| SUBJECT: Technical Specifications for 5 kA, Normal-Duty Distribution 4.5 kV and 5 kV VariSTAR(R) MOV Disks APPLICATION Technical Data TD-231 The VariSTAR MOV (Metal Oxide Varistor) disks described in this Technical Data sheet are for use as active elements in IEC 5 kA and ANSI Normal-Duty Distribution Class Surge Arresters, when applied in an appropriately designed arrester. Polymer Housed Arrester Designs: Use the glass collared AV5NG series VariSTAR disks, when applying disks to a polymer housed arrester, where the dielectric strength of the material in direct contact with the disks exceeds the dielectric strength of air. Porcelain Housed Arrester Designs: Option 1. Use the glass collared AV5NG series VariSTAR disk together with an Epoxy Film Tape, as described in technical data sheet TD-241, when applying disks in a porcelain housed arrester, where the material in direct contact with the VariSTAR disks is equal to the dielectric strength of air. Option 2. Use the epoxy collared AV5NE series VariSTAR disks, when applying disks in a porcelain housed arrester, where the dielectric strength of the material in direct contact with the disks is equal to the dielectric strength of air. Electrical properties for AV5NG and AV5NE series VariSTAR disks are otherwise identical. Catalog Number reference: AV5 = Disk Size N = Normal-Duty, 5 kA G/E = Glass or Epoxy Collar PA/PB = Rating Designation O32.7 0.28 O32.6 0.254 0.051 0.013 GLASS INSULATING COLLAR O33.31 +0.534 -0.382 O32.6 0.254 0.051 0.013 0.356 +0.140 -0.064 34.63 0.3 34.63 0.3 GLASS INSULATING COLLAR (TRANSLUCENT) MOV DISK AV5NG METALIZED ELECTRODE (TO EDGE OF DISK) EPOXY INSULATING COLLAR (SOLID GREY) MOV DISK AV5NE METALIZED ELECTRODE (TO EDGE OF DISK) Surface Area = 8.64 cm2 Volume = 28.78 cm3 Figure 1 Dimensions AV5NG VariSTAR Disk and AV5NE VariSTAR Disk in mm November 2003 File Ref: 235 Supersedes 11/02 Page 1 of 6 Table 1 Suggested Usage & Class Ratings Catalog Number AV5NEPA AV5NGPA AV5NEPB AV5NGPB Suggested Ur (Rating) 4.5 kV 5.0 kV Suggested Uc (MCOV) 3.94 kV 4.26 kV IEC LD Current Withstand 150 A 2000 s 150 A 2000 s ANSI LCLD Class 75 A 2000 s 75 A 2000 s IEC High Current ANSI HCSD 65 kA 65 kA Iref 3 mA 3 mA Table 2 Maximum Residual Voltages MCOV (kV rms) 3.94 4.26 0.5 sec (ANSI) kV @ 5 kA 16.0 17.3 1.0 sec (IEC) kV @ 5 kA 15.9 17.1 8/20 s Wave Forms kV pk @ 1.5 kA 13.1 14.1 kV pk @ 3 kA 14.1 15.2 kV pk @ 5 kA 15.1 16.3 kV pk @ 10 kA 16.5 17.8 kV pk @ 20 kA 18.9 20.4 kV pk @ 40 kA 21.9 23.6 Catalog Number AV5NEPA AV5NGPA AV5NEPB AV5NGPB Rating (kV) 4.50 5.00 NOTE: Values other than V5 kA are typical values. Discharge Voltage vs. Impulse Current Residual Voltage vs. Impulse Current for 5kA Disks 26.00 26.0 RESIDUAL VOLTAGE (kV Crest) 24.00 24.0 22.0 22.00 20.0 20.00 18.0 18.00 16.0 16.00 14.0 14.00 12.0 12.00 1000 1000 AV5NGP02C AV5NGPA AV5NGP04C AV5NGPB 10,000 10000 IMPULSE CURRENT (A) 100,000 100000 Figure 2 Maximum Residual Voltage vs. Impulse Current 1.8 1.7 1.6 1.5 NO PRIOR DUTY PER UNIT OF Uc 1.4 1.3 1.2 AFTER IEC HIGH CURRENT DUTY 1.1 1 0.01 0.1 1 10 100 1000 10000 TIME DURATION IN SECONDS Figure 3 Temporary Overvoltage Capability, 60C NOTE: The TOV capability will depend on the design and thermal capability of the arrester. The above TOV curve represents a typical Cooper Power Systems design. Page 2 of 6 0.500 0.500 0.450 0.450 POWER LOSS (WATTS) 0.400 0.400 0.350 0.350 0.300 0.300 0.250 0.250 0.200 0.200 0.150 0.150 0.100 0.100 0.050 0.050 0.000 0.000 0 200 200 400 600 TIME (HOURS) Time (hours) 800 800 1000 1000 1200 Figure 4 Aging curve for AV5NG and AV5NE VariSTAR disks Aging factors based on the IEC and ANSI 1000 hour power loss tests are guaranteed to be less than or equal to 1. The 1000 hour test is performed at 115C, which is equivalent to 110 years with the operating temperature at 40C and operating voltages less than or equal to COV. See Figure 4. FACTORY ROUTINE TESTS PERFORMED ON EACH DISK Physical Inspection Residual Voltage Measurement (referenced to 5 kA, 8/20 s) V1mA/cm2 (DC voltage at 8.6 mA) Power Loss @ 0.551 of V1mA/cm2 Voltage Table 3 Guaranteed Characteristics based on 100% Testing Catalog Number AV5NEPA AV5NGPA AV5NEPB AV5NGPB Min. V1mA/cm2 (kV DC) 7.50 8.12 Max. V5kA (kV) 15.1 16.3 Page 3 of 6 Top Line Digit 1 264535S A298 Top Line: Digit 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . Factory No. (May be numeral or letter designation) Digit 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . Last Digit of Year of Manufacture Digits 3, 4, 5, 6 . . . . . . . . . . . . . . . . . . . . Factory Lot Number Digit 7 . . . . . . . . . . . . . . . . . . . . . . . . . . . Factory Use Only Second Line: Digit 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . Rating Code (See Table 4 below) Digit 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . Factory Use Only Digits 3 (& 4) . . . . . . . . . . . . . . . . . . . . . Disk Sub-category per Table 5 Figure 5 Disk Identification System Table 4 Disk Category Power Loss Test Min. Rating Code A B Catalog Number AV5NEPA AV5NGPA AV5NEPB AV5NGPB V1mA/cm2 (kV DC) 7.50 8.12 Max. V5kA (kV) 15.1 16.3 Test Voltage kV rms 4.14 4.47 Watts @ 20 C 0.245 0.260 Min. Vref @ Iref of 3 mA (kV) 5.21 5.64 Page 4 of 6 Table 5 Disk Sub-category Second Line Digits 3 (& 4) 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 STORAGE AND HANDLING Maximum V5kA (kV) 12.00 12.10 12.20 12.30 12.40 12.50 12.60 12.70 12.80 12.90 13.00 13.10 13.20 13.30 13.40 13.50 13.60 13.70 13.80 13.90 14.00 14.10 14.20 14.30 14.40 14.50 14.60 14.70 14.80 14.90 15.00 15.10 15.20 15.30 15.40 15.50 15.60 15.70 15.80 15.90 16.00 16.10 16.20 16.30 16.40 Minimum V5kA (kV) 11.91 12.01 12.11 12.21 12.31 12.41 12.51 12.61 12.71 12.81 12.91 13.01 13.11 13.21 13.31 13.41 13.51 13.61 13.71 13.81 13.91 14.01 14.11 14.21 14.31 14.41 14.51 14.61 14.71 14.81 14.91 15.01 15.11 15.21 15.31 15.41 15.51 15.61 15.71 15.81 15.91 16.01 16.11 16.21 16.31 The VariSTAR MOV disks are packaged on wooden pallets and secured for ocean container shipment. The pallet/boxes shall be stored indoors until the purchaser's acceptance test. Once opened, the disks shall be stored in a dry and clean environment to avoid moisture or other contaminants to collect on the disk surface. The MOV disk should not be handled with bare hands. A latex or other non-fibrous glove should be used to prevent contaminants from compromising the collar of the disk. Note: For individual disk reference only. Not for ordering. Page 5 of 6 Cooper Power Systems, Inc. reserves the right to make changes to its product specifications, performance data or characteristics, at any time, without prior notice, and without creating any obligations on its part. Accordingly, the use of the information contained herein creates no liability on the part of Cooper Power Systems, Inc. Cooper Power Systems 01:2 90 00 0 ISO 9001: 2000 ISO Cert. #003945 Olean, N.Y. VariSTAR(R) is a registered trademark of Cooper Industries, Inc. 1045 Hickory Street Pewaukee, WI 53072 www.cooperpower.com MI 11/03 |
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