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INSTALLATION, OPERATING AND TROUBLESHOOTING INSTRUCTIONS FOR MODEL A75D / A75DE –

THREE PHASE

 

Page 7 of 20 

MEAN TIME BETWEEN FAILURE 

The mean time between failure (MTBF) in excess of 100,000 hours at 50 degrees C 
 

INPUT RATINGS 

AC VOLTAGE 

25 Amps through 500 Amps models at 208Vac or 240Vac or 480Vac 
 

INPUT FREQUENCY RANGE 

60Hz +/- 5% 
 

INPUT CURRENT – THREE PHASE 

 

                         THREE PHASE VOLTAGE 

MODEL 

NUMBER 

 

 

 

 

A75D/A75DE- 

208 

240 

480 

 

50 - 24V 

30 

26 

13 

 

75 – 24V 

44 

38 

19 

 

100 – 24V 

59 

51 

26 

 

125 – 24V 

74 

64 

32 

 

150 – 24V 

89 

77 

38 

 

200 – 24V 

118 

102 

51 

 

 

 

 

 

 

50 – 48V 

15 

13 

 

75 – 48V 

22 

19 

10 

 

100 – 48V 

30 

26 

13 

 

125 – 48V 

37 

32 

16 

 

150 – 48V 

44 

38 

19 

 

200 – 48V 

59 

51 

26 

 

250 – 48V 

74 

64 

32 

 

300 - 48V 

89 

77 

38 

 

400 - 48V 

118 

102 

51 

 

 

 

 

 

 

25- 130V 

18 

16 

 

30- 130V 

22 

19 

10 

 

40 -130V 

30 

26 

13 

 

50 -130V 

37 

32 

16 

 

75 – 130V 

55 

48 

24 

 

100 -130V 

74 

64 

32 

 

125- 130V 

92 

80 

40 

 

150 -130V 

111 

96 

48 

 

200 -130V 

148 

128 

64 

 

250 -130V 

185 

160 

80 

 

300 -130V 

222 

192 

96 

 

400 -130V 

296 

256 

128 

 

500 –130V 

360 

312 

156 

 

Summary of Contents for A75D

Page 1: ...Digital METERS THREE PHASE ECN DATE CPN124997 20535 8 14 20098 8 13 20084 8 13 19784 12 12 106 BRADROCK DRIVE DES PLAINES IL 60018 1967 847 299 1188 FAX 847 299 3061 ISSUE DATE ECN 19609 7 12 INSTRUCT...

Page 2: ...UTMOST IMPORTANCE THAT EACH TIME BEFORE USING THIS UNIT YOU READ THIS MANUAL AND FOLLOW THE INSTRUCTIONS EXACTLY To reduce risk of battery explosion follow these instructions and those published by t...

Page 3: ...Gases from the battery will corrode and damage equipment A sealed maintenance free or valve regulated lead acid VRLA may be placed below this equipment Never allow the battery electrolyte to drip on t...

Page 4: ...provide a copy of the claim to La Marche Mfg may void warranty service for any physical damages reported for repair HANDLING WARNING Equipment can be very heavy and top heavy Use adequate manpower or...

Page 5: ...f the battery cables charger output and relay rack terminals Connect the proper battery cable to the ground bar or battery charger output terminal Energize the power supply by turning on the units AC...

Page 6: ...75D A75DE series battery chargers provide separate voltage adjustments for floating or equalizing lead or nickel cadmium cells The float or equalize mode of operation is selected by pressing the equal...

Page 7: ...E PHASE VOLTAGE MODEL NUMBER D B C A75D A75DE 208 240 480 50 24V 30 26 13 75 24V 44 38 19 100 24V 59 51 26 125 24V 74 64 32 150 24V 89 77 38 200 24V 118 102 51 50 48V 15 13 6 75 48V 22 19 10 100 48V 3...

Page 8: ...E terminals of all chargers can be connected together to ensure all chargers automatically switch into and out of equalize mode together PROTECTION Current Walk In The output current gradually increas...

Page 9: ...terminals together If the charger is equipped with a Remote Equalize Terminal connect the RE terminals together CURRENT WALK IN Output current will gradually increase after the battery charger is tur...

Page 10: ...INFORMATION MINIMUM WIRE SIZES See Wire Size Chart lists the ac input and dc output minimum wire size requirements At distances exceeding 10 feet the dc wire size should be chosen to keep the voltage...

Page 11: ...500000 3 52620 400 400000 1750 1750000 2 66360 500 500000 2000 2000000 DENOTES ALL SIZES LARGER THAN 0000 ARE EXPRESSED IN MCM TABLE OF CONVENTIONS CMA Cross section of wire in circular MIL area A Ult...

Page 12: ...le lists the AC input and the DC output minimum wire size requirements At distances exceeding 10 feet the DC wire size should be chosen to keep the voltage difference between the units DC output termi...

Page 13: ...done in the following order single power supply 1 Connect AC input line to the terminal block provided Be sure the AC circuit breaker is off 2 Observe the polarity of the battery cables and the rectif...

Page 14: ...changing the rectifier current limit between 50 110 of rated output Turning the adjustment which is located on the unit front panel clockwise lowers the current limit turning counterclockwise raises...

Page 15: ...lashing LED Solid LED High DC voltage 2 45 Vpc Lead Acid High DC voltage shutdown HVSD 2 5 Vpc Lead Acid Low DC current 5 A Timer mode Mode 0 Equalize Time 8 Hours OPT 46R RELAY PACKAGE 2 SETS OF FORM...

Page 16: ...indicate The timer will automatically return the charger to the float mode when the equalize cycle is complete MODE 1 DISPLAY indicates P01 This mode of operation automatically starts an equalize cycl...

Page 17: ...can be caused by defective batteries and customer loads make sure batteries and loads are free from defects NOTE If the problem is found to be located in the printed circuit boards the board should be...

Page 18: ...output Meter should not indicate If the meter reads full scale deflection this indicates an ac dc short During shipping an AC wire may rub against the DC lugs terminals etc and cause a short These pro...

Page 19: ...nal components 4 Check front panel meters and alarms for accuracy 4th Year REPEAT ABOVE WITH THE ADDITION OF 1 Check relay contacts for pitting or corrosion 2 Check capacitors for leakage 7th Year REP...

Page 20: ...r installation installation adjustments and service arrangements Should minor adjustments be required the local La Marche sales representative should be contacted to provide this service only All sale...

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