USER`S MANUAL 1KSS6050/5060
Contents
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3. USER S MANUAL 1KSS6050 5060 1 Edition Frequency Converter Visicomm Industries LLC 911 A Milwaukee Ave Burlington WI 53105 1 INTRODUCTION The conversion of electrical power is an essential reguirement for export testing or operation of eguipment brought to the U S from abroad The KSS series Freguency Converter is designed to meet these needs as it supplies reliable pure and stable power at an affordable price This Converter is designed with the following unigue features e Double Conversion IGBT module Single control board design eliminates adjustment and minimizes maintenance and repair LCD display for unit status user friendly design Special overload capacity design 150 overload for 30 sec Built in isolation transformer to ensure total isolation between the input and output e Special airflow control to avoid dust accumulation Suitable for any rough operating environments e Compact size light weight LNOlHd HILHIANOO AONINDIHH 09095 0909SSM L suoloniulsqo JO 189 9 PUB UBIJI SJSANO uo e ilu A y deey eseaId SYIANOT NOLLVTILNIA OL JYUNLVHIANSL 9 AONINDIHH LNANI YHIMOd LNdLNO g AOVLIOA LNdLNO Z AONSNDAHH LAdLNO r JOVLIOA LNdNI 1 AVIdSIG 4971 6 kejdsip 097 243 uo ejdsip ol eyep YIIUM sajas LO313S AVIASIG 491 8 OBEN 1ndjno ay seun 8ul4 ISNrAV ADVLIOA LNdLNO Z 00 uey 1978216 SI JUBLINI nd no ay SAJBIIPUI situ L 037 GVYOTHJAO UOIPUOD YN u SI 18124409 SY
4. er to a device under test especially if there will be other monitoring eguipment connected to the device Other applications can take advantage of the low leakage current of the Converter about 1 or 2 ma This can be useful in systems where the individual leakage currents d the components might exceed the allowed leakage current of a ground fault interrupter Other applications require that the output have a connection to the utility NEUTRAL Normally this would be OUTPUT terminal N The exception would be a two phase output where L1 would be the connection to the system NEUTRAL The Converter is supplied with a short jumper wire If the system NEUTRAL is used to power the INPUT terminals and it is reguired that the OUTPUT be connected to NEUTRAL this jumper can be employed to make this connection If the INPUT is supplied by two phase AC or by two phases of a three phase system in other words if you have only two incoming power wires this NEUTRAL would not be present and an external wire from the desired OUTPUT terminal to the system NEUTRAL would be reguired See INPUT CONNECTION DIAGRAM on next page Basic diagram of output stage INPUT POWER CONNECTIONS The frequency of the input power can be 50 or 60 Hz and is not related to the output frequency CAUTION The Input is Electrically Isolated from the output It is necessary to connect the input using one of the following four methods A SINGLE PHASE 220V INPUT This connection is
5. guency bypass capacitor for RF suppression Therefore the function of the Earth Ground is simply to maintain the case of the Converter at ground potential Visicomm Industries LLC does not recommend any other connection to the Earth Ground wire which may introduce significant amounts of current and thereby defeat the intended purpose of this wire which is the safety of the operating personnel In particular do not connect this wire to the system neutral wire at any point Output Connection The Power OUTPUT Connections are provided by three barrier terminal posts labeled N L1 and L2 These three terminals constitute the three terminals of an internal auto transformer were L1 is the center tap This is fed by the output winding of a switching transformer Since the only other internal connections are a resonating capacitor the cooling fans and sensing circuits to maintain an output sine wave these output terminals are electrically isolated from any other circuits including the system neutral The Converter is shipped with these OUTPUT connections electrically isolated If a digital voltmeter is connected between any one of these OUTPUT terminals and the Earth Ground a significant voltage reading will be obtained This voltage is due to a small leakage current and is not considered a problem since only 1 or 2 mais involved Output Isolation Many applications reguire an isolated output primarily for safety reasons when supplying pow
6. usually used in 50Hz countries where a neutral is normally available CASE OUTPUT INPUT SYSTEM NEUTRAL 220 VAC HOT LEAD B SPLIT PHASE 220V INPUT This connection is usually used in 60Hz countries where a 220V line is not normally available and where the input amperage makes using 120V inconvenient CASE OUTPUT INPUT 120 VAC HOT LEAD Phase 2 180 phase from phase 1 120 VAC HOT LEAD Phase 1 SYSTEM NEUTRAL DO NOT CONNECT THIS LEAD GROUND C SINGLE PHASE 120V INPUT CASE OUTPUT INPUT GND SYSTEM NEUTRAL 120VAC HOT LEAD GROUND D THREE PHASE 120 208 VAC USING LINE TO LINE INPUT To be used ifthe 120V line to neutral connection is limited by the amperage available CASE OUTPUT INPUT PHASE 1 PHASE 2 PHASE 3 DO NOT CONNECT THIS LEAD SYSTEM NEUTRAL IF PRESENT DO NOT CONNECT THIS LEAD OUTPUT POWER CONNECTIONS The freguency of the output power can be 50 or 60 Hz and is not related to the input freguency CAUTION The output is floating and is electrically isolated from the input It is necessary to connect the output using one of the following three methods Note that these output voltages are widely adjustable using the voltage adjust rheostat A SINGLE PHASE 120V OUTPUT CASE OUTPUT INPUT GND SYSTEM NEUTRAL 120 VAC HOT LEAD GROUND B SINGLE PHASE 220V OUTPUT CASE OUTPUT INPUT GND SYSTEM NEUTRAL 220 VAC HOT LEAD C SPLIT PHASE 220V OUTPU
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