W-F-1814/620
Interrupting capacity rating: 200,000 amperes rms symmetrical at 600 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 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 ferrule type fuses in accordance with UL 4248-12.
1/ A fuse marked "For use only on motor circuits" may clear within 8 minutes at 200 percent.
Part or Identifying Number (PIN): The Government PIN shall consist of the prefix "WF1814/62-" followed by the PIN designation shown in table I.
TABLE I. Current rating and PIN designation.
Current in amperes |
PIN designation |
|||
RK5 |
RK1 |
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Instantaneous |
Time delay |
Instantaneous |
Time delay |
|
1/10 15/100 2/10 3/10 4/10 1/2 6/10 8/10 1 1 1/8 1 1/4 1 4/10 1 6/10 1 8/10 2 2 1/4 2 1/2 2 8/10 3 3 2/10 3 1/2 4 4 1/2 5 5 6/10 6 6 1/4 7 8 9 10 12 15 17 1/2 20 25 30 |
F501 F503 F506 F510 F515 F520 F525 F530 |
05001 050015 05002 05003 05004 05005 05006 05008 0501 050112 050125 05014 05016 05018 0502 050225 05025 05028 0503 05032 05035 0504 05045 0505 05056 0506 050625 0507 0508 0509 0510 0512 0515 05175 0520 0525 0530 |
F101 F103 F106 F110 F115 F120 F125 F130 |
01001 010015 01002 01003 01004 01005 01006 01008 0101 010112 010125 01014 01016 01018 0102 010225 01025 01028 0103 01032 01035 0104 01045 0105 01056 0106 010625 0107 0108 0109 0110 0112 0115 01175 0120 0125 0130 |
3
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