1、MILITARY SPECIFICATION POWER SUPPLY, WE IV(A) .L (TORPEDO TESTING) . .1 .- -. _. . This specifica%ion has been approved by the Naval Ordnance Systems Command, Department of the Navy 1. SCOTE 1.1 Scope. This specification describes the requirements for the pro- curement of a rectifier type power supp
2、ly for use in Naval shipboard or er mppy Type IV(A) wi supply var- ical svstems normally energized by - .- shore-based torpedo workshops. Pow ious dc voltages for torpedo electr- - storage batteries. In ad$+ nn +.n mmnlvinE continuous direct current, . Contents of the manual shall be subject to the
3、approval of the procuring activity. 3.2.18 installation data. The contractor will provide the procuring activity with a reproducible copy of basic installation data vithin 90 days after receipt to the contract. This data shall give all informa- tion necessary for planning the installation of power s
4、upplies, such as . b Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-22497C( os) o-ierall size, weigh%, position and typ of input connector, power rating, t:l.pe O .;entilation, location of ventilation louvers, control Location, ani position of
5、 output connector. This data shall be shown on the con- zactor s drakrings. L 3.3 Zerformance requirements and product characteristics. The power sugply shall meet the following performance requirements and product Characteristics : 3.3.1 Input power source. The unit shall operate satisfactorily fro
6、m any one of the following power sources: 3.3.1.1 Input voltage. The power supply shall o2erate satisfactorily from +phase input voltages of either 208 plus or minus 10 percent, 220 plus or minus 10 percent, or 440 plus or minus 10 percent. 3.3.1.2 Input frequency. 50 or 60 Hz plus or minus 5 percen
7、t. 3.3.1.3 Input current. The input current to the power supply shall not exceed 25 amperes per phase when operated at the minimum specified input of 208 minus 10 percent volts while providing rated dc output.of 90 volts at 50 amperes. When operating with an inpu% of 440 minus 10 percent volts while
8、 providing rated dc output of 90 volts at 50 amperes, the input current to the power supply shall-not exceed 12 apeies per phse. 3.3.1.4 Phase sequence. The power supply shall operate as specified . without regard to the phase sequence of the input power. 3.3.2 Output voltages and current. The dc ou
9、tput of the power supply shall be available in two ranges, identified as the LOW range and HIGH range, which shall be selectable fromthe front panel by means of a two- position, rotary-type switch. The voltage and current requirements in both ranges are as follows: SFJITCH VOLTAGE RATED CONT. MAX. S
10、URGE CURRENT 33SITION RANGE CUflRrn (START TO 15 SECOND) Low 6 - 40 vdc 100 amperes 200 amperes BIGE 6 - 90 vdc 50 amperes 100 amperes 3.3.2.1 Static load regulation. With constant line voltage, the out- put voltage shall not vary more than plus or minus one percent with an- cutput current change fr
11、on no-load to continuous rated full load 7 Y-. I i- Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-_ MIL-P-22477C 13 7997706 O302463 T 3.3.2.2 Dynarn5.c repiLal;ion and response t-tme. In the LOW RANGE posi- tion with the sudden application or relea
12、se of any load current up to 50 aTperes, the voltage at the output terminals shall not fall nor rise more b,-.an 5 gercent fromthe no-load setting and shall decline to 37 percent of tke -,-oltage excursion within 75 milliskconds. plies ta any output-voltage above 25 volts. 25 clzs,. k4th the sudden
13、application or release of any load current up to 50 mperes, the voltage at the output terminals shall not fall nor rise more than 1.25 volts and shall recover to within 0.5 volt of the no- load voltage within 75 milliseconds. L. . This requirement ap- At no-load settings below 3.3.2.2.1 Overshoot or
14、 undershoot. A momentary interruption of the ac . input power shall not cause the output voltage to overshoot the preset value by more than 5 percent. When ac input power is applied to the power supply, the dc output voltage shall rise at a rate of not less than 30 volts per second to the voltage se
15、t by the output voltage con- trol. The output .voltage shall not overshoot the preset value by more than 5 percent, and shal1,retwn to the preset value in less than 0.5 second. A sudden change in the position of the output voltage control setting shall not cause an overshoot or an undershoot of volt
16、age in ex- cess of 5 percent of the new preset value. 3.3.2.3 Output stability. At any given voltage setting within the voltage range specified in 3.3.2, the output voltage shall remain with- in olus or minus one volt, without adjustment, for a minimum of four Oou_rs, monitored continuously by use o
17、f the voltmeter recorder of 4.5.5. 3.3.2.4 Static line regulation. The static line regulation shall not exceed 1 percent for a plus or minus 10 percent line voltage change or a plus or minus 5 percent variation of input frequency at constant ioad. 3.3.2.5 Output voltage control. Changes in the power
18、 supplys output voltage control shall result in simultaneous changes in the dc output voltage, with negligible lag. adjusting the output voltage in the range of 6 to 90 volts within in- crements of less than one-half volt. The output voltage shall be inear within plus or minus 20 degrees with respec
19、t to the angular displacement of the output voltage control. The voltage control shall be capable of 3.3.2.6 Ripple voltage. The ripple content of the dc output o9 the powsr sup-1)- shall not exceed 0.50 percent rms (1.50 percent peak-lo- geai:) cit. m;.- output aboire 25 volts or current within rat
20、ing in the LOW civa, va, rale. -. 3.3.2.7 Output isolation. Output of the powersupply shall be isolated from ground with either polarity capable of being grounded. 8 - - Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-22497C 13 m 9999906 030246
21、4 L II i- . . MIL-P-22497C( OS) 3.3.2.8 Loss-of-phase protection. Protection against damage to the pover supply due to the loss of any one of the 3-phse inputs shall be 2rovided. 3.3.2.9 Series operation. The power supply shall be so designed and ccnstructed that the outputs of two units may be conn
22、ected series-additive $0 obtain an output voltage equal to the sum of the output voltages of the Individual power supplies. except the series connection of output terminals shall be required. . For series operation, no interconnection NOTE Khen operating two power supplies with series-connected outp
23、ut circuits, tne output voltage controls shall be -varied simultaneously to approximately bal- ance the voltage and load between the two units 3.3.2.10 Current limiting. The power supply shall incorporake a con- tinuous current limiting circuit to limit the current to il5 amperes plus O minus i5 amp
24、eres in the HIGH voltage range, and 230 amperes plus O minus- 30 amperes in the LOWvoltage range, and shall automatically restore the output voltage to its original preset value upon removal of the overload. 3.3.2.11 The power supply shall operate as speciied herein for any coiiibincttion OC resisti
25、ve, inductive, capacitive, or rotating inverter (direct current to alternating cirrent motor-generator set) load with- in .Lhe specified load rating of the power supply. Specifically, it should be compatible with Torpedoes Mk 37, 44, 45, and 46 and their as- sociated test equipment. 3.3.2.12 Operati
26、ng life. The power supply shall have a minimum Oper- ating life of 1000 hours, when cycled as described in 4.7.4, with only minor maintenance or repair. 3.3.2.13 Operating temperature. With the unit operating in an ambient texperatiu-e of 77 degrees Fahrenheit (F), no exposed parts of the equip- xii
27、t: including the enclosure, shall under any condition of operation achieve a temperature in excess 01 i30 degrees F. operating controls shall not exceed 100 degrees F. The Iront panels and 3.4 Environmenta requirements 3.4.1. Temperature. Power Supply Type IV(A) shall meet all ihe ser- foimance requ
28、irements and product characteristics of %his speci-ication, when operating in a temperature range of 30 to 130 degrees 3 (arrfbient). 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-22q97C 13 m 9797706 0302L165 3 1 3.4.2 Ifumidity. The power
29、supply shall meet all the performance re- quirenents and product characteristics of this specification while Oper- atips at relative humidities ranging up to 95 pe-rcent at temperatures upE . to 130 degrees F. Tlne power supply, packaged and packed as speci- fied Ln 5.1.1 and 5.2.1, shall meet all p
30、erformance requirements and pro- duct characteristics of this specification after being subjected to the rough handling tests of 4.7.3. 3.1.3 kiough handling. 3.5 Cleanup. Prior to and after final assembly, all parts, components and the assembly shall be thoroughly cleaned of loose, spattered or ex-
31、 .cess solder, metal chips, and other foreign matter, Bms an sharp edges as well as rosin flash, shall be removed. 3.6 Workmanship. The power supplyj including all parts and accessor- les, shall be constructed and finished in a manner to ensure compliance with all requirements of this specification.
32、 Particular attention shall be paid to neatness and thoroughness of soldering, w5rinE;, marking of parts and assemblies, impregnation of coils, plating, painting, machine- screw a.ssemblage, welding, riveting, brazing, and freedom of parts from all burrs and sharp edges. The skandards of workmanship
33、 exhibited in any approved preproduction sqle, subject to any qualification stated in the Governments notice o? approval, shall be determinative of the requirements of the contract relative to workmanship insofar as not specifically covered by appli- cable specifications. . 4. QUALITY ASSURANCE PBOV
34、ISIONS 4.1 Responsibility for inspection. Unless otherwise specified inthe contract or purchase order, the supplier is responsible for the performance of all inspection requirements as specified herein. Except as otherwise . specified in the contract or order, the supplier may use his.own or any oth
35、er facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. serves the right to perform any of the inspections set forth in the speci- fication where such inspections are deemed necessary to assure supplies and services conform to
36、 prescribed requirements. The Government re- 4.2 Classification of inspections. Inspection of Power Supply Type IV(A) shall be classified as follows: (a) Quality conformance inspection (paragraph 4.6) 10 ._ .- . . no load, one-half load, and full load, as-described below. put mltages of 25 vdc and 4
37、0 vdc in the LOW voltage range. age shall %e determined by taking peak-to-peak voltage readings with a properly calibrated oscilloscope (4.5.3), using the largest reading as representing the peak-to-peakiralue of the ripple voltage. The rms value shall then be determined by dividing this measured pe
38、ak-to-peak value by three . Take readings at out- (e) ?le effective root mean square (rms) value of the ripple volt- (b) The value of the output voltage shall be determined by a mea- surement made with the dc voltmeter (4.5.6) connected across the output voltage terminals. (c) .The measurements abov
39、e shall be taken and recorded at no load, . . one-half load, and ful load. The percent ripple voltage shall be re- corded f or each condition from calculations as follows : Percent ripple voltage=rms of ripple voltage x 100 output voltage . The ripple voltage- shall not exceed 0.50 percent rms (1.50
40、 percent peak- -. t o-peak) . 4.6.3.9 . Output isolation. With the unit deenergized, measure the in- sulation resistance between each output terminal and the chassis (or cabinet) with the 500 volt dc megger (4.5.4). . The resistance shall mea- sure one megohm or greater. . . 4.6.3.10 Loss of phase p
41、rotection. Disconnect one of the three input phases; nected again the supply shall operate as specified herein. The power supply shall stop operating. . When the phase is con- -. 4.6.3.U Current limiiing circuit. With the voltage range selector in the RIGH range position, verify operation of the cur
42、rent limiting circuit. Increase the load current (by gradually decreasing the load resistance to zero) from 50 amperes to more than 100 amperes within a period of not more than ten seconds to determine the maximum current at which limiting action occurs. the overload is removed. Veri1”y that the out
43、put voltage returns to its preset value when 4.6.3.11.1 With the voltage range selector in the LOW range position, verify operation of the current limiting circuit, rent (by gradually decreasing the load resistance to zero) from 50 arnperes Increase the load cur- 16 _- Y- L -I Provided by IHSNot for
44、 ResaleNo reproduction or networking permitted without license from IHS-,-,- - MiL-P-22497C( os) to more than 200 amperes within a period of not more than ten seconds to . determine the maximum current at which limiting action occurs. . that the output voltage returns to its preset value when the ov
45、erload is r moved . Verim . .- k.6.3.12 Series operation. Verify that the outputs of two rPype-N(A) .- .- . power supplies can be connected series adaitive to obtain an-output Volt- age equal to the sum of the output voltages of the individual power sup- plies. minais shall be used. No interconnecti
46、on except the. series connection of output ter- .- .- NCYPE -. When operating two power supplies with series-connected outputs, the output . voltage controls shall be varied simul- . taneously to approximately balance the. voltage and load between the two limits. 4.6.3.13 Verify that the power suppl
47、y operates as specified for any combination of resistive, inductive, capaciti.ve, or rotating inverter load within load rating of the power supply. The testing of the pre- the actual weapons and test equipment specified in 3.3.2.11. testing of the preproduction samples has confimed that the design i
48、s compatible with the weapons and equipment, this test can be conducted by the contractor using substitute loads, the designs of which are ap- proved by the Government procurement agency. -production samples for this requirement shall be accomplished using. After 4.6.3.14 Verify that changes in the
49、power supply output voltage control resuit in simultaneous changes in the dc output voltage, with negligible lag. 4.6.3.14.1 VerifJi that the voltage control is capable of adjusting the output voltage in the range of 6 to 90 volts within less than one- . half volt. 4.6.3.14.2 Verify that the control of the dc output voltage is linear . within plus orminus 20 degrees of shaft rotation at a minimum of 5 poins distributed thro
