W-F-1814/640
Part or Identifying Number (PIN): The Government PIN shall consist of the prefix "WF1814/64-" followed by the PIN designation shown in table I.
TABLE I. Current rating and PIN designation.
Current in amperes |
PIN designation |
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RK5 |
RK1 |
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Instantaneous |
Time delay |
Instantaneous |
Time delay |
|
70 80 90 100 |
F5070 F5080 F5090 F5100 |
05070 05080 05090 05100 |
F1070 F1080 F1090 F1100 |
01070 01080 01090 01100 |
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 (Ip x 103) |
14 |
22 |
16 |
25 |
20 |
32 |
Maximum clearing I2T (amperes squared seconds) (I2T x 103) |
100 |
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 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.
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