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SECTION 2 

EQUIPMENT REQUIREMENTS 

NOTES 

 
Minimum use specifications are the principal parameters required for performance of the verification, and are 
included to assist in the selection of alternate equipment, which may be used at the discretion of the using facility. 
Satisfactory performance of alternate items shall be verified prior to use. The applicable multimeters, and external 
shunt must bear evidence of current calibration. Timer or Stop watch can be verified with a known accurate 
timekeeper. 
The instruments utilized in this procedure were selected from those known to be available at Naval and Marine 
Corps

 

facilities and the listing by make or model number carries no implication of preference, recommendation, or 

approval for use by other agencies. It is recognized that equivalent equipment produced by other manufacturers may 
be capable of equally satisfactory performance in this procedure.  
 

Table 2. Equipment Requirements for TI 

 

Item Minimum 

Use 

Specifications 

Calibration 

Equipment 

 

SECTION 3 

PRELIMINARY OPERATIONS 

 
3.1 Ensure that power switch is set to OFF to avoid arcing or damage to the battery or power supply terminals or the    
      TI battery clamps.  
  
3.2 Connect the Battery or power supply to the TI. Observe polarity. 

 

SECTION 4 

VERIFICATION PROCESS 

 

NOTE: Unless otherwise specified, verify the results of each test and take corrective action whenever the test 
requirement is not met before proceeding.  
 
4.1 Voltmeter tests when its power switch is set to OFF. 
  
4.1.1 TI voltmeter reads battery or power supply volts.  
 
4.1.2 Set the DMM to read DC volts.  
 
4.1.3 Connect the DMM as shown in Figure 1. 
 
4.1.4 Compare the reading of the DMM to the TI voltmeter. Per Table 3  
 

2.1  Two Digital multi-meters 
(DMM) 
 
2.2  Calibrated shunt 10 Amperes 
per Millivolt 
Eg. 500Amp 50mv or 1000Amp 
100mv Shunt 
 
2.3  Charged Optima battery or 
power supply capable of 400Amps  
12.5V - 10V for 15 Seconds 
 
2.4  Timer 

DC volts to 13V  
(2)DC millivolts to 40MV 
 
Range: 0 to 50mV 
 
 
 
 
NA 
 
 
 
NA 

FLUKE 77AN 
 
 
Local Supply 
 
 
 
 
Local Supply 
 
 
 
Local Supply 

Summary of Contents for ST-375

Page 1: ... 375 905 2 TECHNICAL MANUAL INSTRUMENT VERIFICATION PROCEDURE HIGH RATE DISCHARGE TESTER POWER PRODUCTS P N 37512 MODEL ST 375 MFD BY POWER PRODUCTS INC 27 PAMARON WAY STE E NOVATO CA 94949 CAGE CODE 3C8X4 www power products com POC PAUL CHAIT ...

Page 2: ...ions 2 4 Verification Process 2 4 ILLUSTRATIONS Figure Page 1 Voltmeter Test Setup 3 2 Ammeter Test Setup 3 3 Timing Setup Test 5 Data Sheet 375 9 05 TABLES Table Page 1 Verification Description 1 2 Equipment Requirements 2 3 Tolerance Limits 3 4 Timing Requirements 4 5 Summary Table of Tolerance Requirements 5 ...

Page 3: ... Terminals connected to a pair of test points on the front panel The voltmeter also has test points 1 2 This procedure describes the verification of accuracy of Power Products High rate Discharger Tester P N 37512 The 37512 being verified is referred to herein as the TI Test Instrument The TI operates from the battery being tested and does not require any other power 1 3 This procedure includes te...

Page 4: ...re Table 2 Equipment Requirements for TI Item Minimum Use Specifications Calibration Equipment SECTION 3 PRELIMINARY OPERATIONS 3 1 Ensure that power switch is set to OFF to avoid arcing or damage to the battery or power supply terminals or the TI battery clamps 3 2 Connect the Battery or power supply to the TI Observe polarity SECTION 4 VERIFICATION PROCESS NOTE Unless otherwise specified verify ...

Page 5: ... TI DC BATTERY CABLE TO FROM THE BATTERY 4 1 6 LOAD CURRENT TESTS Connect the equipment as shown in Figure 2 4 1 7 Ensure that the AUTO OFF MANUAL switch is set to OFF 4 1 8 Connect shunt as described in table 2 item 2 2 and power supply or optima battery as described in table 2 item 2 3 4 1 9 Set switch to Manual to obtain Readings Load will not remain on over 15 seconds Refer to table 5 par 4 1 ...

Page 6: ...to AUTO The green led illuminates 4 1 14 At the end of 15 seconds the voltmeter holds freezes its voltage Approximately 3 seconds later a contactor click out is heard and the green led turns off Table 4 Timing Requirements TI Time Tolerance Limit AUTO test led ON Load ON START Voltmeter Holds Battery End Voltage 15 Sec Within 2 Sec Retains the voltage reading on hold Load contactor drops out Green...

Page 7: ...5V 75 375 Amp XAMPLE Actual voltage reading 10 9 difference is 0 4 Amps ptable Test reading is Amperes 4 If actual volts are 10 1 differences is 0 4 le ps 10 5V S 1 2 Multiply Difference by 35 3 If higher than 10 5 add to 3 4 If lower than 10 5 subtract from 5 Acceptable Result must be the actual reading 10 Amperes E STEPS 1 2 0 4 X 35 Amps 14 Amps 3 14 Amps 375 Amps 389 4 5 Acce 389 10 Amps 379 t...

Page 8: ...sitive Black to Negative Meter reads Battery Open Circuit voltage Toggle switch to AUTOMATIC this is a 15 sec load test At end of 15 seconds meter locks in voltage reading Relay click heard after lock in If voltage is at or above 10 0 volts Battery is acceptable Below 10 0 volts is unacceptable For Manual test press and hold switch down Cuts Off at 15 sec Set switch to center OFF before removing b...

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