ARMY *TM 9-6115-464-34 AIR FORCE TO-35C2-3 ... - Igor Chudov

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ARMY TM 9-6115-464-34AIR FORCE TO 35C2-445--2NAVY NAVFAC P-8-624-34Table 4-3. ELECTRICAL PERFORMANCE CHARACTERISTIC PARAMETERSAC PRECISE (CLASS 1) (CONTINUED)TEST METHODCHARACTERISTIC PARAMETER VALUE MIL-STD-705b. Frequency characteristics1. Regulation (%) 0.25 608.12. Steady–state-stability (variation (bandwidth %)(a) Short term (30 seconds) 0.5 608.1(b) Long term (4 hours) 1 608.23. Transient performance(a) Application of rated load(1) Undershoot (%) 1.5 608.1(2) Recovery (seconds) 1 608.1(b) Rejection of rated load(1) Overshoot (%) 1.5 608.1(2) Recovery (seconds) 1 608.14. Frequency adjustment range (Hz)(a) 50 Hz ±2 511.2(b) 60 Hz ±2 511.2(c) 400 Hz +20+20–10 511.2NOTE1. The voltage shall stabilize at or above this voltage.2. The generator set connected for three phase output and supplying a single phase, unity Power factorload connected line-to-line, with no other load on the set. The load current to be 25 percent of the ratedfull load current of the set.4-11. MALFUNCTION INDICATOR TEST.a. The malfunction indicator system is electrically isolated and independent of the protection system. Testingof the indicators can be accomplished at the same time that the protective devices are tested in tests 6, 9, 10,11, 12, 14, 15, 16, 17 and 18 of table 4-1.b. In the event that one of the indicator circuits does not work, verify that the lamp is functional by operatingthe test and reset switch on the fault indicator panel.4-12. PHASE BALANCE TEST VOLTAGE.a. General. Polyphase electrical equipment may not operate properly or may be damaged if the phasevoltages of a polyphase generator differ greatly from each other. Also, large differences between the phasevoltages of a polyphase generator may be an indication that the generator set has been improperly manu–factured or damaged.b. Apparatus. A frequency meter (or tachometer as described and illustrated in MIL–HDBK–705. Method104, or 109.1 and an rms indicating ac voltmeter having an accuracy of ± 0.1% of the reading shall be requiredto perform both procedures. A means of separately exciting the generator is required since procedure II isperformed.4-7
ARMY TM 9-6115-464-34AIR FORCE TO 35C2-3-445-2NAVY NAVFAC P-8-624-34c. Generator With Separate Excitation.(1) Preparation for test.(a) Completely isolate the generator windings (armature coils and field windings).(b) Connect the frequency meter to one of the armature coils of the generator.(c) Provide separate excitation for the exciter field.(2) Test.(a) Start and operate the generatorat rated frequency and at no load.(b) Adjust the excitation so that anyone of the coil voltages is at rated value.(c) Read and record the generator frequency (speed) and the voltage of each armature coil.d. Generator With Separate Excitation:(1) Determine from the data obtained in 4-13d. (2) the maximum and minimum armature coil voltages.(2) The voltage unbalance is the difference between the maximum and minimum armature coil voltages.To express this in percent divide this difference by rated armature coil voltage and multiply by 100.Voltage Unbalance (Coil), in percent=V max–V minV RatedX 100(3) Compare the results of step (2) above with the requirements.4-13. REGULATOR RANGE TESTa. General. The voltage adjust device associated with the voltage regulator provided with the generator setmust have adjustment capable of varying the regulated voltage throughout the limits and under the various loadconditions and temperature ranges without causing the voltage droop of the set to exceed specification limits.The voltage adjust device also must be capable in some cases of providing an operating voltage other thanrated voltage for special types of equipment and to compensate for external line drop.b. Apparatus. Instrumentation for measuring load conditions, ambient temperature, and the generator field(or exciter field) voltage and current shall be as described and illustrated in MIL-HDBK-705.c. Procedure for Test.(1) Preparation for test.(a) Connect the load and field instrumentation in accordance with the applicable figure ofMIL-HDBK-705, Method 205.1, Paragraph 205.1.10 for one voltage and frequency.4-8
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ARMY *TM 9-6115-464-34 AIR FORCE TO-35C2-3 ... - Igor Chudov

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