La Marche TPSD Installation And Operation Manual
Also see for TPSD: Instructions
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Contents
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102.4 Making the DC Output ConnectionsBefore making any of DC output connections make sure you have read and fully understand the DC ConnectionProcedure below. Select proper size for the DC wiring from the wire size table on the previous page. If thedistance between the unit’s DC output and the DC load exceeds 10 feet, use the Power Cable Guide below tominimize the voltage drop across the wire distance.Power Cabling GuideUse the following formulas and table to determine proper wire size for minimal voltage drop.Table of ConventionsCMA = Cross section of wire in circular MIL areaA = Ultimate drain in amperesLF = Conductor loop feetMaxAmp = Maximum allowable amperes for given voltage dropAVD = Allowable voltage dropK = 11.1 for commercial (TW) copper wire (KS5482-01)= 17.4 for aluminum (KS20189)Calculating Wire Size RequirementsAVDKLFACMA Calculating Current Carrying Capacity of WireKLFAVDCMAMaxAmp DC Connection ProcedureTo prevent the DC circuit breaker from tripping when connecting the battery, connections should be done in thefollowing order.1. Turn off the unit’s AC and DC circuit breakers.2. Connect AC input line to the unit’s input terminals as described in Section 2.3.3. Connect the battery cables to the unit’s DC output terminals.OBSERVE PROPER POLARITY.4. Energize the power supply by turning on the unit’s AC breaker. This will charge the capacitors inside theunit and eliminate heavy arcing when the battery is connected.5. After about 30 seconds, turn on the DC breakerSIZE(AWG)AREACIR.MILSSIZE(MCM)AREACIR.MILS18 1620 250 25000016 2580 300 30000014 4110 350 35000012 6530 400 40000010 10380 500 5000008 16510 600 6000006 26240 700 7000004 41740 750 7500003 52620 800 8000002 66360 900 9000001 83690 1000 10000000 105600 1250 125000000 133100 1500 1500000000 167800 1750 17500000000 211600 2000 2000000Table 7 - Wire Size/Area Table |
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