1、This amendmen .MILITARY SPECIFICATION REGULATORS, LINE VOLTAGE, SINGLE PHASE, -400 HERTZ A.C. NAVAL SHIPBOARD fi- +8, line 3: Delete “3.3.8.2 and substitute “3.3.8.3“. 3.3.8.1, items (a) and (b): Delete and substitute: “(a) Single-phase or three-phase wye (4Lwire); 3.5 percent for 150 ampere and 225
2、 ampere regulators; 6 percent for 75 ampere regulators: 6 percent for 20 “(b) Three-phase delta: 6 percent for 150 ampere and 225 ampere regulators: 10 percent for 75 ampere regulators; 10.5 percent for 20 ampere and 40 ampere regulators.“ - ampere and 90 ampere regulators. 3.3.8.2: Delete. 3.3.8.3,
3、 make the following changes: (a) Line 1, heading, after “slope“, add: “(steady-state).“ (b) Line 6, delete8 “both“; delete “and dynamic“. .- (c) Line.7, delete: “and 3.3.8.2“. Page 8 3.3.9, lines 2 and 8: 3.3.11.1, delete and substitute: Delete “35 milliseconds“ and substitute “100 milliseconds“. .“
4、3.3.11.1 KvA efficiency. “3.3.11.1.1 KVA efficiency of each equipment connected in a three-phase four-wire wye system shall be at least 70 percent at any load between 60 percent load and rated full load, at 0.75 lagging and unity power factor. “3.3.11.1.2 KVA efficiency of each equipment connected i
5、n a three-phase delta system shall be at least 60 percent at any load between 60 percent load and rated full load, at 0.75 lagging and unity power factor.“ Page 9 3i5.3, line 1: Delete “A“ and substitute “P. Page 2 of 6 I Provided by IHSNot for ResaleNo reproduction or networking permitted without l
6、icense from IHS-,-,-MIL-R-23098A (b) bL m 999990b 0088804 L MIL-R-2309 8A (SH) AMENDMENT-6 3.5.3.1, lines 1 and 2: Delete and substitute: “3.5.3.1 Cate or F, evaluation and procurement. Category F drawings shall contain the following m under column “3 phase delta“, opposite “Dielectric strength“ del
7、ete “X“ and substitute “-“; make the following changes under-column “3 phase wyel“: Table V, under column “1 phase“; opposite “Dielectric strength“ delete “-“ and substitute I P E !. . Opposite “Input voltage transient“ delete “-“ and siibstitute-“X“. Opposite “Output voltage transient“ delete “-* a
8、nd substitute wXm, Opposite “Output voltage build-up“ delete I-. and substitute “X“. Opposite “Output voltage modulation“ delete O-“ and substitute “Xu. Opposite “Output voltage modulation gain“ delete and substitute “X“. Opposite “No load input excitation current“ delete “-“ and substitute “X“. . O
9、pposite “Slope of no load input excitation current versus input voltage“ - delete “-“ and substitute “X“. Page 3 of 6 I- , Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-h) (i) Opposite “Efficiency“ delete and substitute “X“. -j) Opposite Waveform d
10、istortion“ delete *-“ ana substitute X“. Delete “Inclined operation“, and all references thereto. i;: Page 17 f: _. 4.5.2, line 2: 4.5.5.1, first sentence: Delete “MIL-E-2306“ and substitute “tIIL-E-2036“. Delete and substitute: “Heating tests shall be performed in I - accordance with the operationa
11、l configuration of 3.3.2(a), with line voltage regulators interconnected in a balanced three-phase delta system at 105 percent rated input voltage under conditions of rated full load output line current (balanced) at unity power factor.“ Page 18 P- 14 . Add as paragraph 4.5.6.1: 4.5.6.1 Grou A. When
12、 steady-state voltage regulation tests are performed at test condition Nos. *3 of table VII, in accordance with the group A procedure of 4.5.7.1, a broadband measurement of sound pressure level shall be conducted by means of a microphone positioned at a single point 3 feet in front of the regulator
13、equipment. Instrumentation. used in the performance of broadband measurement of sound pressure level shall Conform to MIL-STD-740. The single point observation of broadband noise shall demonstrate that the equipment does not produce any acoustic noise emission in excess of 65 decibels (db) referred
14、to 0.0002 microbar sound pressure level. noise test in accordance with 4.5.6 shall be conducted .to determine conformance with the requirements of 3.2.3.“ . . In the event that this noise level is exceeded, a Page 19 Table YII: Add the following: I Provided by IHSNot for ResaleNo reproduction or net
15、working permitted without license from IHS-,-,-c r I MIL-R-23098AfSH) AMENDMENT-6 4.5.7.2, item (a) (2): Delete “The equipments shall be adjusted for maximum output Item (a) (3): Delete and substitute: voltage compensation.“ (3) Using the operational configuration specified in 3.3.2(a), output line-
16、to- neutral voltages shall be measured at the regulator terminals under condi- tion Nos. 25, 26 and 27 of table VII.“ Item (a) (4): Delete. Page 20 4.5.8.2, item (a) (2): Delete and substitute: “(2) Equipments shall be operated on a steady-state basis in accordance with test condition Nos. 25, 26 an
17、d 27 of table VII. The equipments shall be subjected to a single phase step increase in load extending from 10 percent load to rated full load on the lightly loaded phase.“ - Item (b), line 1: Delete “4.5.8.2(a)“ and substitute 4.5.8.2ca) (11“; lines 3 and Delete “and step change in load on lightly
18、loaded phase shall extend from 20 percent load 4: to rated full load.“ Page 21 4.5.10.1, second sentence: Delete and substitute: “The harmonic content of the output voltage waveform of the 400 Hz source used to provide powerto the regulator equipment8 - under test shall not exceed the limits specifi
19、ed.below, when the source supplies a resistive load equal to the rating of the line voltage regulators: (a) 3 percent of rated ms voltage, total harmonic distortion. (b) 2 percent of rated rms voltage, for any single armonic component.“ 4.5.11, delete and substitute: * 4.5.11 Phase balance. Equipmen
20、ts shall be connected in three-phase delta, and shall The three-phase delta configuration shall be -be operated in amdamth steady-state condition Nos. 28, 29 and 30 of table VII. Equipment operation shall conform to 3.3.2ta). tested for voltage balance at equipment output terminals. Output line-to-l
21、ine voltages shall be measured to determine conformance with 3.3.3.“ . 4.5.12, lines 5 and 8: Delete *1 to 100 Hz“ and substitute 10 to 100 Hz“. Page 22 4.5.13.1t last line: Delete “3.3.8.2“ and substitute “3.3.8.3“. 4.5.13.3: Delete. 4.5.14: Delete. Page 23 4.5.16, second sentence: Delete and subst
22、itute: “After each 100 hours of operation, the initially impressed load shall be changed in a single step from the 20 percent - EO percent - 80 percent configuration to a balanced rated line current condition.*; line 8, delete “at each step application of single phase load“ and substitute *at each s
23、tep change of load“; line 9, delete “3.3.6 and“; line 12, delete “and 3.3.6“. -I Page .5 of 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R-23078A (6) 61 777770b 0088807 7 W . MIL-R-23098A (SH) AMENDMENT-6 amperes shall be energized and opera
24、ted at 45 percent of rated load during shock test. Equipments of all other ratings shall be energized and operated at rated full load during shock test. “ 4.5.18, item (a), second sentence: Delete and substitute: “Equipntents rated at 225 . Item (a), lines 6 and-7: Delete “Condition Nos. 22 through
25、24“ Page, 24 - 4.5.21, line 4: Delete *MTTRG* and substitute WR*. Page 25 6.1, add as item (g) : (9) Quality assurance requirements (see 4.1.1) .“ Page 27 Add as paragraphs 6.4.29 and 6.4.30: “6.4.29 Primar corrective maintenance. Primary corrective maintenance is that main- tenance performdan as-re
26、quired basis to return an equipment to service in the shortest possible time after a failure or malfunction has occurred. 6.4.30 Secondar corrective maintenance. Secondary corrective maintenance is a .maintenance ac + on, performed independently of primary cor-rective maintenance, which restores a m
27、alfunctioning subassembly, removed from the equipment, to the status of an operating spare NOTE: The margins of this amendment are marked “#“ to indicate where changes (additions, modifications, corrections, deletions) from the previous amendment were made. don as a convenience only and the Governme
28、nt assumes no liability whatsoever or any fn- accuracies in these notations. reauirements of this document based on the entire content irrespective of the marginal Thfa was Bidders and contractors are cautioned to evaluate the - a- notations and relationship to the last previous amendment. Preparing activity: Navy - SH (Project 6110-NZ05) *US. GOVERNMENT PRINTING OFFICE: 1976-603-766/6387 .- Page 6 of 6 . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
