november 2003 supersedes 11/02 p age 1 of 6 file ref: 235 application 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. po l ymer 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. po r celain 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: a v5 = disk size n = normal-duty, 5 ka g/e = glass or epoxy collar p a/pb = rating designation figure 1 dimensions av5ng varistar disk and av5ne varistar disk in mm subject: t echnical specifications for 5 ka, normal-duty distribution 4.5 kv and 5 kv varistar mov disks t echnical data td-231 32.6 0.254 32.7 0.28 34.63 0.3 0.051 0.013 32.6 0.254 34.63 0.3 0.051 0.013 0.356 +0.140 -0.064 33.31 +0.534 -0.382 surface area = 8.64 cm 2 v olume = 28.78 cm 3 glass insulating collar epoxy insulating collar (solid grey) glass insulating collar (translucent) mov disk mov disk a v5ne a v5ng metalized electrode (to edge of disk) metalized electrode (to edge of disk)
p age 2 of 6 note: values other than v 5 ka are typical values. 0.5 ?ec 1.0 ?ec 8/20 ? wave forms mcov (ansi) (iec) catalog rating (kv kv @ kv @ kv pk @ kv pk @ kv pk @ kv pk @ kv pk @ kv pk @ number (kv) rms) 5 ka 5 ka 1.5 ka 3 ka 5 ka 10 ka 20 ka 40 ka a v5nepa 4.50 3.94 16.0 15.9 13.1 14.1 15.1 16.5 18.9 21.9 a v5ngpa a v5nepb 5.00 4.26 17.3 17.1 14.1 15.2 16.3 17.8 20.4 23.6 a v5ngpb discharge voltage vs. impulse current for 5ka disks 12.00 14.00 16.00 18.00 20.00 22.00 24.00 26.00 1000 10000 100000 av5ngp02c av5ngp04c figure 2 maximum residual voltage vs. impulse current 1.6 1.5 1.4 1.3 1.2 1.1 1 0.1 0.01 1 10 100 1000 10000 1.7 1.8 time duration in seconds per unit of uc after iec high current duty no prior duty figure 3 t emporary overvoltage capability, 60? 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. tab le 2 maximum residual voltages residual voltage (kv crest) impulse current (a) residual voltage vs. impulse current a v5ngpa a v5ngpb catalog suggested suggested iec ld ansi lcld iec high current number u r (rating) u c (mcov) current withstand class ansi hcsd i ref a v5nepa 4.5 kv 3.94 kv 150 a 2000 s 75 a 2000 s 65 ka 3 ma a v5ngpa a v5nepb 5.0 kv 4.26 kv 150 a 2000 s 75 a 2000 s 65 ka 3 ma a v5ngpb tab le 1 suggested usage & class ratings 26.0 24.0 22.0 20.0 18.0 16.0 14.0 12.0 1000 10,000 100,000
p age 3 of 6 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 115?, which is equivalent to 110 years with the operating temperature at 40? and operating voltages less than or equal to cov. see figure 4. fa ctory routine tests performed on each disk physical inspection residual voltage measurement (referenced to 5 ka, 8/20 s) v 1ma/cm 2 (dc voltage at 8.6 ma) po w er loss @ 0.551 of v 1ma/cm 2 v oltage min. v 1ma/cm 2 max. v 5ka catalog number (kv dc) (kv) a v5nepa 7.50 15.1 a v5ngpa a v5nepb 8.12 16.3 a v5ngpb tab le 3 guaranteed characteristics based on 100% testing 0.000 0.050 0.100 0.150 0.200 0.250 0.300 0.350 0.400 0.450 0.500 0 200 400 600 800 1000 1200 t t i i m m e e ( ( h h o o u u r r s s ) ) figure 4 aging curve for av5ng and av5ne varistar disks power loss (watts) time (hours) 0.500 0.450 0.400 0.350 0.300 0.250 0.200 0.150 0.100 0.050 0.000 0 200 400 600 800 1000 1200
t op 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 p age 4 of 6 264535s a298 t op line digit 1 figure 5 disk identification system pow er loss test min. max. min. v ref @ rating catalog v 1ma/cm 2 v 5ka t est voltage watts i ref of 3 ma code number (kv dc) (kv) kv rms @ 20 c (kv) a a v5nepa 7.50 15.1 4.14 0.245 5.21 a v5ngpa b a v5nepb 8.12 16.3 4.47 0.260 5.64 a v5ngpb tab le 4 disk category
p age 5 of 6 storage and handling 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 av oid 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. second line minimum maximum digits v 5ka v 5ka 3 (& 4) (kv) (kv) 20 11.91 12.00 21 12.01 12.10 22 12.11 12.20 23 12.21 12.30 24 12.31 12.40 25 12.41 12.50 26 12.51 12.60 27 12.61 12.70 28 12.71 12.80 29 12.81 12.90 30 12.91 13.00 31 13.01 13.10 32 13.11 13.20 33 13.21 13.30 34 13.31 13.40 35 13.41 13.50 36 13.51 13.60 37 13.61 13.70 38 13.71 13.80 39 13.81 13.90 40 13.91 14.00 41 14.01 14.10 42 14.11 14.20 43 14.21 14.30 44 14.31 14.40 45 14.41 14.50 46 14.51 14.60 47 14.61 14.70 48 14.71 14.80 49 14.81 14.90 50 14.91 15.00 51 15.01 15.10 52 15.11 15.20 53 15.21 15.30 54 15.31 15.40 55 15.41 15.50 56 15.51 15.60 57 15.61 15.70 58 15.71 15.80 59 15.81 15.90 60 15.91 16.00 61 16.01 16.10 62 16.11 16.20 63 16.21 16.30 64 16.31 16.40 tab le 5 disk sub-category note: for individual disk reference only. not for ordering.
1045 hickory street pewaukee, wi 53072 www.cooperpower.com cooper power systems, inc. reserves the right to make changes to its product specifications, performance data or characteristic s, at any time, without prior notice, and without creating any obligations on its part. accordingly, the use of the information co ntained herein creates no liability on the part of cooper power systems, inc. mi 11/03 cooper power systems iso 9001: 2000 cert. #003945 olean, n.y. i s o 9 0 0 1 : 2 0 0 0 v aristar is a registered trademark of cooper industries, inc.
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