TM 5-6115-593-34 NAVFAC P-8-631-34 TO-35C2-3-463-2 voltage connections if applicable. d. Results. (1) From     the     oscillograms     taken     in     16- 18c(2)(d), determine the time between the indicated   closure   of   the   short-circuiting switch    and    the    opening    of    the    circuit interrupter.  See figure 512.1-II. (2) Calculate   the   short-circuit   current   using the peak-to-peak amplitudes of the current trace and the steadystate ammeter   reading   prior   to   application   of the short circuit.  See figure 512.1-II. (3) Tabulate     the     above     results     and     the malfunction  indicator  indication  for  each line connection at each voltage connection  and  compare  the  results  with the requirements in table 16-1. 16-19.  CIRCUITS INTERRUPTER TEST (OVERLOAD CURRENT). a. General.        A   circuit   interrupter   is   connected between    the    generator    voltage    reconnection system  and  the  generator  output  terminals  to disconnect  the  generator  output  from  the  load and   to   protect   the   generator   from   sustained overload    current.        The    circuit    interrupter    is operated  from  a  current  sensor  external  to  the interrupter. b. Apparatus.    Instrumentation  for  measuring  load conditions and field voltage and current shall be as  described  and  illustrated  in  MIL-HDBK-705. In  addition,  a  stopwatch  or  an  oscillograph  with galvanometer matching network and a noninductive  shunt  as  described  and  illustrated in   MIL-HDBK-705.      Method   106.1,   paragraph 106.1.3     and     galvanometers     having     a     flat frequency    respond    (within    plus    or    minus    5 percent) from DC to 3,000 Hz. c. Procedure. (1) Preparation  for  Test.    Connect  the  load and   field   instrumentation   in   accordance with  the  applicable  figure  of  MIL-HDBK- 705,   Method   205.1,   paragraph   205.1.10 for one voltage and frequency. CAUTION If   the   circuit   interrupter   fails   to operate  within  the  time  specified in  table  16-1  at  any  time  during the  performance  of  this  method, manually open the circuit interrupter   and   reduce   the   load impedance  to  rated  value  before reclosing   the   circuit   interrupter. Record    on    the    data    sheet    the failure of the interrupter to operate and the total elapsed time the overload was on the set. (2) Test. (a) Start  and  operate  the  generator  set at   rated   voltage,   rated   frequency, and rated load. (b) Allow  the  generator  set  to  stabilize at rated load, voltage, and frequency.          During     this     period, readings    of    the    load    and    field instrumentation shall be recorded at minimum intervals of 10 minutes.  If necessary, adjustments to the load, voltage,    and    frequency    may    be made    to    maintain    rated    load    at rated voltage and frequency. Adjustments to the load, voltage, or frequency   shall   be   noted   on   the data   sheet.      Stabilization   will   be considered  to  have  occurred  when four consecutive voltage and current  readings  of  the  exciter  field either   remain   unchanged   or   have only     minor     variations     about     an equilibrium condition with no evident continued increase or decrease    in    value    after    the    last load, voltage, or frequency adjustment has been made. 16-15