1、 AMSC N/A FSC 5920 W-F-1814/66D 15 November 2013 SUPERSEDING W-F-1814/66C 20 November 2009 FEDERAL SPECIFICATION SHEET FUSE, CARTRIDGE, HIGH INTERRUPTING CAPACITY, CLASSES RK1 AND RK5 (CURRENT-LIMITING) 600 VOLTS, 201-400 AMPERES The General Services Administration has authorized the use of this fed
2、eral specification sheet by all federal agencies. The complete requirements for procuring the fuses described herein shall consist of this document and the latest issue in effect of W-F-1814. Ltr Inches mm Ltr Inches mm Min Max Min Max Min Max Min Max A 11.620 11.630 295.15 295.40 G .620 .630 15.75
3、16.00 B 1.875 - 47.63 - H .245 .255 6.22 6.47 C 7.125 7.813 180.98 198.45 J 1.625 (TYP) 41.28 (TYP) D .933 .943 23.70 23.95 K - 2.910 - 73.91 E .401 .411 10.19 10.44 L 1.448 1.458 36.78 37.03 F 2.500 - 63.50 - NOTES: 1. Dimensions are in inches. 2. Metric equivalents are given for general informatio
4、n only. 3. Use of screw, pin, or rivet is optional. 4. The dashed line represents the limit of the maximum projection of a screw, rivet head, or the like. 5. Unless otherwise specified, tolerances are .02 (0.51 mm) for two-place decimals and .005 (0.13 mm) for three-place decimals. FIGURE 1. Classes
5、 RK1 and RK5 fuses, 600 volts, 201-400 amperes. INCH-POUND Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-W-F-1814/66D 2 REQUIREMENTS: Interface and physical dimensions: See figure 1. Physical: Nonrenewable. Terminals: Knife blade type. Material: Co
6、pper, or copper alloy. Strength: 5 inch-pound torque between body and blades. Body: Insulating material: Fiber, ceramic, melamine-impregnated glass fiber, or other suitable material. Electrical: Voltage: 600 volts or less. Frequency: 48 Hz to 60 Hz. Current: See table I. Current carrying capacity: 1
7、10 percent of rated current indefinitely with temperature rise not to exceed 50C (90F) above ambient on the body and 65C (117C) on the blades. Overload interrupt: Instantaneous: Shall interrupt within 2 hours at 135 percent of rated current and within 6 minutes at 200 percent of rated current. Time
8、delay - In addition to the above requirement, the fuse shall not interrupt 500 percent of rated current within 10 seconds. Interrupting capacity rating: 200,000 amperes rms symmetrical at 600 volts, 48 Hz to 60 Hz and a power factor of 20 percent or less. Closing angle shall be essentially at the ze
9、ro of the voltage wave (maximum offset) or later, to produce start of arcing within 30 electrical degrees prior to system peak voltage. Threshold ratio: 30 maximum for RK1; 65 maximum for RK5. Peak let-thru current: See table II. Maximum clearing I2T: See table II. Applicable fuseholder: Class R for
10、 blade type fuses in accordance with UL 4248-12. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-W-F-1814/66D 3 Part or Identifying Number (PIN): The Government PIN shall consist of the prefix “WF1814/66-“ followed by the PIN designation shown in tab
11、le I. TABLE I. Current rating and PIN designation. Current in amperes PIN designation RK5 RK1 Instantaneous Time delay Instantaneous Time delay 225 F5225 D5225 F1225 D1225 250 F5250 D5250 F1250 D1250 300 F5300 D5300 F1300 D1300 350 F5350 D5350 F1350 D1350 400 F5400 D5400 F1400 D1400 TABLE II. Peak l
12、et-thru and I2T current. Between threshold and 50 kA 100 kA 200 kA RK1 RK5 RK1 RK5 RK1 RK5 Maximum acceptable peak let-thru current (Ipx 103) 33 50 35 60 50 75 Maximum clearing I2T (amperes squared seconds) (I2T x 103) 1200 5000 1200 5000 1600 5000 Referenced documents. In addition to W-F-1814, this
13、 document references the following: UL 4248-12 The margins of this specification sheet are marked with vertical lines to indicate where changes from the previous issue were made. This was done as a convenience only and the Government assumes no liability whatsoever for any inaccuracies in these nota
14、tions. Bidders and contractors are cautioned to evaluate the requirements of this document based on the entire content irrespective of the marginal notations and relationship to the last previous issue. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,
15、-W-F-1814/66D 4 MILITARY INTEREST: CIVIL AGENCY COORDINATING ACTIVITIES: Custodians: GSA - FAS Army - CR Navy - EC Preparing activity: Air Force - 85 DLA - CC DLA - CC Review activities: (Project 5920-2013-024) Army - AR, AT, CR4 Navy - OS Air Force - 99 NSA - NS NOTE: The activities listed above we
16、re interested in this document as of the date of this document. Since organizations and responsibilities can change, you should verify the currency of the information above using the ASSIST Online database at https:/assist.dla.mil. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
