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

ARMY TM 9-6115-464-34AIR FORCE TO 35C2-445-2NAVY NAVFAC P-8-624-34c. Procedure.(1) Preparation for test.(a)Connect the load and field instrumentation in accordance with the applicable figure ofMIL-HDBK-705, Method 205.1, paragraphs 205.1.10, for one voltage and frequency. Connect thesignal input of the recording meter(s) to the convenience receptacle of the set or to the generatorcoil which is used as the voltage sensing input to the voltage regulator. (Power the recordingmeter(s) from the commercial utility.)(b)Set the recording meter chart speed(s) to a minimum of 5 inches per hour. The following items shallbe recorded on both the data sheets and recording chart(s):1. The date2. The serial number(s) of the recording meter(s)3. Generator set identification4. The recording chart speed(s)5. The data reading number(c) Place all instrumentation referred to in paragraph 4-15b. in operation.(2) Test.(a) Start and operate the generator set and allow the set to stabilize at rated load, rated voltage andrated frequency. During this period operate the recording meter(s) at a chart speed of not less than6 inches per hour, and record all instrument readings including thermal instrumentation at minimumintervals of 10 minutes. If necessary, adjustments to the load, voltage and frequency may be madeto maintain rated load at rated voltage and frequency. Adjustments to the voltage and frequencyshall be limited to those adjustments available to the operator, specifically adjustments to thevoltage or frequency adjust devices. On sets utilizing a droop-type speed control droop portions ofthe control may be adjusted. No other adjustments to the voltage and frequency control systemsshall be made. Adjustments to load, voltage or frequency controls shall be recorded on both thedata sheet and the recording chart(s) at the time of an adjustment. Stabilization shall be consideredto have occurred when four consecutive voltage and current recorded readings of the generator (orexciter) field either remain unchanged or have only minor variations about an equilibrium conditionwith no evident continued increase or decrease in value after the last adjustment to the load,voltage or frequency has been made.(b) After stabilization has occurred, drop the load to no load and reapply rated load a number of times(three should be sufficient) to assure that the no load and rated load voltage and frequency valuesare repeatable and that the frequency and voltage regulation is within the limits specified in theprocurement document. If any adjustments are necessary, paragraph (a) above must be repeated.Reapply rated load.4-11