1、 AMSC N/A FSC 5920 W-F-1814/50C 01 October 2009 SUPERSEDING W-F-1814/50B 15 December 2003 FEDERAL SPECIFICATION SHEET FUSE, CARTRIDGE, HIGH INTERRUPTING CAPACITY, CLASS L (CURRENT-LIMITING) 600 VOLTS, 1601-2000 AMPERES The General Services Administration has authorized the use of this federal specif
2、ication sheet by all federal agencies. The complete requirements for procuring the fuses described herein shall consist of this document and the latest issue of Specification W-F-1814. NOTES: 1. Dimensions are in inches. 2. Metric equivalents are given for general information only. 3. Unless otherwi
3、se specified, tolerances are .02 (0.51 mm) for two-place decimals and .005 (0.13 mm) for three-place decimals. 4. Slots and holes shall be .62 (15.75 mm). FIGURE 1. Configuration and dimensions. INCH-POUND Inches mm Inches mm .03 .76 2.38 60.45 .06 1.52 3.03 76.96 .09 2.29 5.75 146.05 .44 11.18 6.75
4、 171.45 1.38 35.05 10.75 273.05 1.75 44.45 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-W-F-1814/50C 2 REQUIREMENTS: Interface and physical dimensions: See figure 1. Physical: Nonrenewable. Terminals: Knife blade type. Material: Brass, copper, or
5、copper alloy. Strength: 20 pound-inches torque between body and knife blades. Body: Insulating material: Ceramic, melamine-impregnated glass fiber, or the equivalent. Electrical: Voltage: 600 volts or less. Frequency: 48 Hz to 60 Hz. Current: See table I. Current carrying capacity: 110 percent of ra
6、ted current indefinitely with temperature rise on the terminals not to exceed 65C above the calibration temperature rise of the test equipment. Overload interrupt: Instantaneous: Shall interrupt within 240 minutes at 150 percent of rated current. Time delay: In addition to the above requirement, the
7、 fuse shall not interrupt 500 percent of rated current within 4 seconds. Interrupting capacity rating: 200,000 amperes rms symmetrical at 600 volts, 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 produc
8、e start of arcing within 30 electrical degrees prior to system peak voltage. Threshold ratio: 35 maximum. Peak let-thru current: 165x103amperes maximum. Maximum clearing I2T: 40x106 ampere2seconds. Applicable fuseholding device: Fuseholding devices shall provide mounting holes to correspond with tho
9、se in the fuse as specified. All fuses shall be bolted into fuseholding device during operation. Part or Identifying Number (PIN): See table I. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-W-F-1814/50C 3 TABLE I. Electrical characteristics. Govern
10、ment PIN Current rating (amps) Overload interrupt WF1814/50-001 2000 Instantaneous WF1814/50-002 2000 Time delay 1/ 1/ Should not be considered for use in new design. The margins of this specification sheet are marked with vertical lines to indicate where changes from the previous issue were made. T
11、his 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 relationship to th
12、e last previous issue. MILITARY INTEREST: CIVIL AGENCY COORDINATING ACTIVITIES: Custodians: GSA - FSS Army - CR Navy - YD Preparing activity: Air Force - 85 DLA - CC DLA - CC Review activities: (Project 5920-2009-018) Army - AT Navy - OS NSA - NS NOTE: The activities listed above were interested in
13、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 http:/assist.daps.dla.mil. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
