1、 AMSC N/A FSC 5920 W-F-1814/61D 15 November 2013 SUPERSEDING W-F-1814/61C 20 November 2009 FEDERAL SPECIFICATION SHEET FUSE, CARTRIDGE, HIGH INTERRUPTING CAPACITY, CLASSES RK1 AND RK5 (CURRENT-LIMITING) 250 VOLTS, 401-600 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 10.281 10.469 261.14 265.91 G .719 .781 18.26
3、19.84 B 2.250 - 57.15 - H .245 .255 6.22 6.48 C 5.188 5.813 131.78 147.65 J - 2.000 - 50.80 D 1.120 1.130 28.45 28.70 K - 2.910 - 73.91 E .525 .535 13.34 13.59 L 1.448 1.458 36.78 37.03 F 1.530 - 38.86 - FIGURE 1. Classes RK1 and RK5 fuses, 250 volts, 401-600 amperes. INCH-POUND Provided by IHSNot f
4、or ResaleNo reproduction or networking permitted without license from IHS-,-,-W-F-1814/61D 2 NOTES: 1. Dimensions are in inches. 2. Metric equivalents are given for general information only. 3. Use of screw, pin, or rivet is optional. 4. The dashed line represents the limit of the maximum projection
5、 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 RK1 and RK5 fuses, 250 volts, 401-600 amperes - continued. REQUIREMENTS: Interface and physical dimensions: See figu
6、re 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 material. Electrical: Voltage: 250 volts or less. Freq
7、uency: 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 75C (135F) on the blades. Overload interrupt: Instantaneous: Shall interrupt within 2 hours at 135 percent of
8、rated current and within 12 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 permitted without license from IHS-,-,-W-F-18
9、14/61D 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 within 30 electrical degrees prior to sy
10、stem 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 (PIN): The Government PIN shall consist o
11、f the prefix “WF1814/61-“ 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 450 F5450 D5450 F1450 D1450 500 F5500 D5500 F1500 D1500 600 F5600 D5600 F1600 D1600 TA
12、BLE 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) 43 65 50 80 70 100 Maximum clearing I2T (amperes squared seconds) (I2T x 103) 3000 10000 3000 10000 4000 12000 Referenced documents. In addition
13、 to W-F-1814, this document references the following: UL 4248-12 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-W-F-1814/61D 4 The margins of this specification sheet are marked with vertical lines to indicate where changes from the previous issue w
14、ere made. This was done as a convenience only and the Government 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 relatio
15、nship to the last previous issue. 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 5920-2013-019) Army - AR, AT, CR4 Navy - OS Air Force - 99 NSA - NS NOTE: The activiti
16、es 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-,-,-
