1、 AMSC N/A FSC 5920 W-F-1814/56D 15 November 2013 SUPERSEDING W-F-1814/56C 01 October 2009 FEDERAL SPECIFICATION SHEET FUSE, CARTRIDGE, HIGH INTERRUPTING CAPACITY, CLASSES RK1 AND RK5 (CURRENT-LIMITING) 250 VOLTS, 0-30 AMPERES The General Services Administration has authorized the use of this federal
2、 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. FIGURE 1. Classes RK1 and RK5 fuses, 250 volts, 0-30 amperes. INCH-POUND Provided by IHSNot for ResaleNo reprodu
3、ction or networking permitted without license from IHS-,-,-W-F-1814/56D 2 Ltr Inches mm Ltr Inches mm Min Max Min Max Min Max Min Max A 1.970 2.030 50.04 51.56 H - .150 - 3.81 B .500 - 12.70 - J .026 .036 .66 .91 C .151 .161 3.84 4.09 K .850 - 21.59 - D .085 .130 2.16 3.30 L - .130 - 3.30 E - .530 -
4、 13.46 M .070 - 1.78 - F .554 .570 14.07 14.48 N .151 .161 3.84 4.09 G - .115 - 2.92 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 groove. 4. Dashed line indicates locati
5、on, 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, 0-30 amperes - continued. REQUIREMENTS: Interface and physical dimen
6、sions: See figure 1. Physical: Nonrenewable. Terminals: Ferrule type. The ferrules shall be approximately circular in cross-section. Material: Brass, copper, or copper alloy. Strength: 5 inch-pound torque between body and ferrules. Alignment: The inside diameter of tubular gauge shall be not more th
7、an .571 inch (14.50 mm). Body: Insulating material: Fiber, ceramic, melamine-impregnated glass fiber, or other suitable material. Electrical: Voltage: 250 volts or less. Frequency: 48 Hz to 60 Hz. Current: See table I. Provided by IHSNot for ResaleNo reproduction or networking permitted without lice
8、nse from IHS-,-,-W-F-1814/56D 3 Current carrying capacity: 110 percent of rated current indefinitely with temperature rise on the terminals not to exceed 50C (90F) above ambient on the body and the ferrules. Overload interrupt: Instantaneous: Shall interrupt within 1 hour at 135 percent of rated cur
9、rent and within 2 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. Interrupting capacity rating: 200,000 amperes rms symmetrical at 250 volts, 48 Hz to 60 Hz and a power factor of 2
10、0 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 system peak voltage. Threshold ratio: 30 maximum for RK1; 65 maximum for RK5. Peak let-thru current: See table II. Maximum
11、 clearing I2T: See table II. Applicable fuseholder: Class R for ferrule type fuses in accordance with UL 4248-12. Part or Identifying Number (PIN): The Government PIN shall consist of the prefix “WF1814/56-“ followed by the PIN designation shown in table I. Provided by IHSNot for ResaleNo reproducti
12、on or networking permitted without license from IHS-,-,-W-F-1814/56D 4 TABLE I. Current rating and PIN designation. Current in amperes PIN designation RK5 RK1 Instantaneous Time delay Instantaneous Time delay 1/10 D5001 D1001 15/100 D50015 D10015 2/10 D5002 D1002 3/10 D5003 D1003 4/10 D5004 D1004 1/
13、2 D5005 D1005 6/10 D5006 D1006 8/10 D5008 D1008 1 F501 D501 F101 D101 1 1/8 D50112 D10112 1 1/4 D50125 D10125 1 4/10 D5014 D1014 1 6/10 D5016 D1016 1 8/10 D5018 D1018 2 D502 D102 2 1/4 D50225 D10225 2 1/2 D5025 D1025 2 8/10 D5028 D1028 3 F503 D503 F103 D103 3 2/10 D5032 D1032 3 1/2 D5035 D1035 4 D50
14、4 D104 4 1/2 D5045 D1045 5 D505 D105 5 6/10 D5056 D1056 6 F506 D506 F106 D106 6 1/4 D50625 D10625 7 D507 D107 8 D508 D108 9 D509 D109 10 F510 D510 F110 D110 12 D512 D112 15 F515 D515 F115 D115 17 1/2 D5175 D1175 20 F520 D520 F120 D120 25 F525 D525 F125 D125 30 F530 D530 F130 D130 Provided by IHSNot
15、for ResaleNo reproduction or networking permitted without license from IHS-,-,-W-F-1814/56D 5 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) 6 11 10 11 12 14 Maximum clearing I2T (amperes s
16、quared seconds) (I2T x 103) 10 50 10 50 11 50 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 conve
17、nience 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 relationship to the last previous issue.
18、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 5920-2013-014) Army - AR, AT, CR4 Navy - OS 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-,-,-
