1、 AMSC N/A FSC 5920 W-F-1814/58D 15 November 2013 SUPERSEDING W-F-1814/58C 20 November 2009 FEDERAL SPECIFICATION SHEET FUSE, CARTRIDGE, HIGH INTERRUPTING CAPACITY, CLASSES RK1 AND RK5 (CURRENT-LIMITING) 250 VOLTS, 61-100 AMPERES The General Services Administration has authorized the use of this fede
2、ral 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 5.820 5.940 149.35 150.88 H .219 .281 5.56 7.14
3、 B 1.000 - 25.40 - J .589 .599 14.96 15.21 C 3.375 3.781 85.73 96.04 K - 1.190 - 30.23 D .492 .508 12.50 12.90 L .122 .128 3.10 3.25 E .276 .306 7.01 7.77 M .715 .785 18.16 19.94 F 1.030 - 26.16 - N - 1.310 - 33.27 G - 1.000 - 25.40 FIGURE 1. Classes RK1 and RK5 fuses, 250 volts, 61-100 amperes. INC
4、H-POUND Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-W-F-1814/58D 2 NOTES: 1. Dimensions are in inches. 2. Metric equivalents are given for general information only. 3. Solid line indicates location, shape, and dimensions for minimum rejection gro
5、ove. 4. Dashed line indicates location, shape, and dimensions for maximum rejection groove. 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 RK1 and RK5 fuses, 250 volts, 61-100 amperes - continued. REQU
6、IREMENTS: Interface and physical dimensions: See figure 1. Physical: Nonrenewable. Terminals: Knife blade type. Material: Copper, or copper alloy. Strength: 5 inch-pound torque between body and blades. Body: Insulating material: Fiber, ceramic, melamine-impregnated glass fiber, or other suitable mat
7、erial. Electrical: Voltage: 250 volts or less. Frequency: 48 Hz to 60 Hz. Current: See table I. Current carrying capacity: 110 percent of rated current indefinitely with temperature rise not to exceed 50C (90F) above ambient on the body and the ferrules. Overload interrupt: Instantaneous: Shall inte
8、rrupt within 2 hours at 135 percent of rated current and within 6 minutes at 200 percent of rated current. Time delay: In addition to the above requirement, the fuse shall not interrupt 500 percent of rated current within 10 seconds. Provided by IHSNot for ResaleNo reproduction or networking permitt
9、ed without license from IHS-,-,-W-F-1814/58D 3 Interrupting capacity rating: 200,000 amperes rms symmetrical at 250 volts, 48 to 60 Hz and a power factor of 20 percent or less. Closing angle shall be essentially at the zero of the voltage wave (maximum offset) or later, to produce start of arcing wi
10、thin 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 blade type fuses in accordance with UL 4248-12. Part or Identifying Number (PI
11、N): The Government PIN shall consist of the prefix “WF1814/58-“ followed by the PIN designation shown in table I. TABLE I. Current rating and PIN designation. Current in amperes PIN designation RK5 RK1 Instantaneous Time delay Instantaneous Time delay 70 F5070 D5070 F1070 D1070 80 F5080 D5080 F1080
12、D1080 90 F5090 D5090 F1090 D1090 100 F5100 D5100 F1100 D1100 TABLE II. Peak let-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) 14 22 16 25 20 32 Maximum clearing I2T (amperes squared seconds) (I2T x 103) 100
13、500 100 500 100 500 Referenced documents. In addition to W-F-1814, this 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 Govern
14、ment assumes no liability whatsoever for any inaccuracies in these notations. 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 Res
15、aleNo reproduction or networking permitted without license from IHS-,-,-W-F-1814/58D 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 5920-2013-016) Army - AR, AT, CR4
16、 Navy - OS Air Force - 99 NSA - NS NOTE: The activities listed above were 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-,-,-
