specifications product varistor type gnr25d k model citation revision b01 total pages 5 page 1/5 released date feb. 06, 2002 revision history no rev. date dcr no. description of change rev. 1 feb. 06,2002 new release b01 2 3 4 5 6 7 8 9 10 11 12 approved by checked by edited by yu-chang huang cloud chen andy chiang
type gnr25d k model page 2/5 citation date feb. 06, 2002 subject quality approval and structure rev. b01 1. quality system approval iso9001 certificate of approval no.97-hou-aq-1382 2. safety standards approval standard no. ul 1449 cul file no. e166389 e166389 3. structure no. item description 3.1 main material zinc oxide 3.2 coating material epoxy resin 3.3 marking gnr, part number, ul and cul recognized component mark 3.4 appearance without dirt and crack, marking should be clear d(max.) 27.5 h(max.) 31.0 t(max.) (1) f 12.7 1.0 d1.0 0.1 l(min.) 10.0 k(max.) 3.0 3.5 dimensions unit: mm (1) see page 3, dimensions table
type gnr25d k model page 3/5 citation date feb. 06, 2002 subject dimensions table rev. b01 part no. t max. 25d201k 5.5 25d241k 5.7 25d271k 6.0 25d361k 6.2 25d391k 6.3 25d431k 6.5 25d471k 6.8 25d511k 7.0 25d621k 7.6 25d681k 8.3 25d751k 8.5 25d781k 8.7 25d821k 9.1 25d911k 9.6 25d102k 10.5 25d112k 10.8 25d122k 11.5 unit:mm
type gnr25d k model page 4/5 citation date feb. 06, 2002 subject electrical characteristics rev. b01 4. electrical characteristics n0. item performance test methods 4.0 standard conditions unless otherwise specified, all tests are made under environmental conditions as given below: temperature: 5 ? 35 relative humidity: 45 ? 85 % rh 4.1 maximum allowable voltage ac : (2) vrms dc : (2) v maximum continuous sine wave(rms) or dc voltage which may be applied. 4.2 varistor voltage v 1ma : (2) v voltage across the varistor measured at c ma dc. 4.3 varistor voltage temperature coefficient 0 ? ? ? ? ? 0.05 %/ v cma at 85 v cma at 25 1 v cma at 25 60 4.4 max. clamping voltage (2) v at (2) a peak voltage across the varistor with a specified peak impulse current of 8 20 s waveform. 4.5 rated power (2) w maximum 50 ? 60hz power which may be loaded for 1,000 hrs at 85 2 with v cma / v cma Q 10%. the max. current within the varistor voltage change of less than 10% when one impulse current (8 20 s) applied. 4.6 withstanding surge current (2) a the max. current with a varistor voltage change of less than 10% when two times impulse current (8 20 s) are applied at intervals of 5 minutes. 4.7 energy (2) joule the max. energy absorbed with a varistor voltage change of less than 10% when one impulse(10 1000 s) is applied. 4.8 surge life (2) a the max. current with a varistor voltage change of less than 10% when 10,000 times impulse current (8 20 s) are applied at intervals of 20 seconds at room temperature. (2) see page 5 100
type gnr25d k model page 5/5 citation date feb. 06, 2002 subject electrical characteristics rev. b01 part number maximum allowable voltage varistor voltage clamping voltage (max.) rated wattage (max.) surge current (8/20 s) maximum energy (10/1000 s) surge life i tm (a) ac rms (v) dc(v) (v) (v) ip(a) (w) 1 time 2 times w tm (joule) (a) 25d201k 130 170 185 ? 25d241k 150 200 216 ? 25d271k 175 225 243 ? 25d361k 230 300 324 ? 25d391k 250 320 351 ? 25d431k 275 350 387 ? 25d471k 300 385 423 ? 25d511k 320 415 459 ? 25d621k 385 505 558 ? 25d681k 420 560 612 ? 25d751k 460 615 675 ? 25d781k 485 640 702 ? 25d821k 510 670 738 ? 25d911k 550 745 819 ? 25d102k 625 825 900 ? 25d112k 680 895 990 ? 25d122k 750 980 1080 ?
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