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Battery Control Unit

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control unit fr batery
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  1 ContentsWARNING The Battery Converter Unit may have a hazardous DCvoltage level (around 300 VDC) on its output terminals duringoperation – all installation and service or! shall only e conducted y properly trained service personnel#$nsure DC poer sources to BCU and %C poer sources to%ir Conditioner are completely isolated prior to commencing anyinstallation or service or!# Dou le chec! that no hazardousvoltages ( oth %C and DC) are present e&ore touching anypotentially live parts# 'age   Contents ############################################################################################################  1.1 Battery Converter Unit to Air Conditioner Indoor Unit #####################################3  1.2 Battery Converter Unit to DC Supply..................................................................... 3  1.1 Battery Converter Unit to Air-Conditioning Indoor Unit The Indoor Unit is connected to the Battery Converter Unit via the 4 core (4 x 1mm2) cable provided. The cable is already connected to the AirConditionin! Indoor Unit and is terminated in a 4 ay #olex connector$ hich allo s the Indoor Unit to be connected to the Battery Converter Unit simply by pl%!!in! the connector into the correspondin! soc&et on the Battery Converter Unit. 'ee pict%re belo .'%icient cable len!th is provided to allo or lexibility in choosin! the mo%ntin! position o the Battery Converter Unit  excess cable can be t%c&ed behind the Indoor Unit to provide a neat installation. 1.2 Battery Converter Unit to DC Supply The optional Battery Converter Unit provides po er to the UT'**+ system rom theTelecom Battery sho%ld the AC s%pply to the airconditionin! %nit ail. The Battery Converter Unit steps %p the Telecom Battery volta!e (24, or 4-,) to a level s%itable or %se by the airconditionin! %nit and provides the re%iredelectrical isolation bet een the AC #ains and the Telecom Battery.The Battery Converter Unit sho%ld be connected to the o%tp%t o the Telecom rectiier (via a s%itable capacity circ%it brea&er) by a positive and ne!ative cable (not provided). The Battery Converter Unit typically dra s less than 2/A rom the 0C s%pply$ altho%!h in extreme cases (lo battery volta!e and maxim%m compressor speed) the c%rrent can reach as hi!h as 4*A. It is th%s recommended that a /A brea&er be %sed or protectin! the 0C circ%it eedin! the Battery Converter Unit. NOTE: The DC input to the Battery Converter Unit is not internally fuse!therefore it is a safety re uire#ent that the DC supply $ir$uit isprote$te e%ternally &y a suita&ly rate fuse or $ir$uit &rea'er(The $a&les $onne$tin) the output of the Tele$o# re$ti*er to the Battery Converter Unit shoul&e si+e su$h that there is less than appro%i#ately ,(-. rop a$ross the $a&les at #a%i#u#rate $urrent( Total $a&le len)th /ne)ative plus positive0 is thus li#ite to appro%i#ately (-#/1,##203 1,# /1##20 an 1# /2-##20 respe$tively( 'age 3  While AC 4ains supply to the Air5Conitionin) is present3 the Battery Converter Unit is hel in a lo65po6er stan&y state3 #eanin) no aitional re$ti*er $apa$ity nee &e $onsiere forpo6erin) the Battery Converter Units( 7o6ever3 the Tele$o# Battery an istri&ution $ir$uitnees to &e suita&ly si+e to $ater for the Battery Converter $urrent ra6 urin) AC failure$onitions(The Battery Converter Unit is typi$ally #ounte verti$ally to the ri)ht han sie of the inoorunit usin) the &ra$'ets provie( 'age *

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