SK Series Pure Sine Wave Inverter User's Manual
Contents
1. ff PVC WIRE RING cn AWG 2 6 Do not place anything between battery cable lug and terminal surface Assemble exactly as shown 18 COTEK SK2000 SK3000 SK700 SK1000 SK1500 El INLINE FUSE BATTERY Battery to inverter cable connection TERMINAL I WIRE PLASTIC COVER BLACK ERING Some G B Pone pco an mig between The above illustrate the output cable battery cable lug and terminal surface Assemble exactly as shown connection for your reference COT EIC 3 6 AC Safety Grounding The AC output ground wire should go to the grounding point for your loads for example a distribution panel ground bus 3 6 1 Neutral Grounding GFCI S 3 6 1 1 120V models The neutral conductor of the AC output circuit of the Inverter is automatically connected to the safety ground during inverter operation This conforms to National Electrical Code requirements that separately derived from AC sources such as inverters and generators which have their neutral conductors tied to ground in the same way as the neutral conductors from the utility tied to ground at the AC breaker panel For models configured with a transfer relay while AC utility power is present and the Inverter is in bypass mode this connection the neutral of the Inverter2. 10 COTEK 11 3 1 3 Input Level Display Input Voltages LED Status DC 12V DC 24V DC 48V RED Slow Blink 10 3 10 6 20 5 21 2 40 8 42 4 RED 10 6 11 0 21 2 21 8 42 4 43 5 ORANGE 11 0 12 1 21 8 24 1 43 5 48 1 GREEN 12 1 14 2 24 1 28 6 48 1 56 3 ORANGE Blink 14 2 15 0 28 6 30 0 56 3 59 6 OVER RED Blink 15 0t 30 01 59 61 3 1 4 Load Level Display AC Loads Watts LED status DARK GREEN ORANGE RED RED BLINK SK700 0 150W 151 362W 363 622W 623 754W Over 754W SK1000 0 216W 217 520W 521 885W 886 1075W Over 1075W SK1500 0 285W 286 730W 731 1290W 1291 1563W Over 1563W SK2000 0 460W 461 1013W 1014 1765W 1766 2129W Over 2129W SK3000 0 581W 582 1510W 11511 2572W 2573 3112W Over 3112W 3 1 5 AC Frequency Selected by S4 Dip Switch Frequency 50 HZ OFF 60 HZ ON COT EIX 3 1 6 Status Display Power amp Fault Status Green LED LED Signal Status Solid Power OK Slow Blink Power Saving Red LED LED Signal Status Fast Bink OVP Slow Blink UVP Intermittent Blink za SR sis OTP Solid OLP 3 1 7 Power Saving Mode Power Saving Mode is adjustable and set by the Dip Switches S1 S2 and S3 on the front panel Example With the watt setting at 15W a 15W T load will make the inverter operate normally a 15W load will
3. Dust Do not install the Inverter in a dusty environments The dust can be inhaled into the unit when the cooling fan is working Close to batteries Avoid excessive cable lengths Do not install the Inverter in the same compartment as batteries Use the recommended wire lengths and sizes see section 3 5 Do not mount the Inverter where it will be exposed to the gases produced by the battery These gases are very corrosive and prolonged exposure will damage the Inverter WARNING Shock Hazard Before proceeding further carefully check that the Inverter is NOT connected to any batteries and that all wiring is disconnected from any electrical sources Do not connect the output terminals of the Inverter to an incoming AC source COTEK 17 3 5 DC Wiring Connections Follow this procedure to connect the battery cables to the DC input terminals of the Inverter The cables should be as short as possible less than 10 feet 3 meters ideally and large enough to handle the required current in accordance with the electrical codes or regulations applicable to the installation Cables that are not an adequate gauge too narrow or too long will deteriorate inverter performance such as poor surge capability and frequent low input voltage warnings and shutdowns These low input voltage warnings are due to DC voltage drop across the cables from the inverter to the batteries The longer and narrower the cables the greater the
4. LED indicators will turn to Green color then the inverter starts to work successfully Set the power switch to the OFF position then the inverter stops and all the lights go Off Set the power inverter switch to ON position and turn the test load On The inverter should supply power to the load If you plan to accurately measure the true output r m s voltage of the inverter a meter such as FLUKE 45 BECKMAN 4410 or TRIPLETT 4200 must be used COT EIC 4 Troubleshooting WARNING Do not open or disassemble the Inverter Attempting to service the unit yourself may cause the risk of electrical shock or fire Problems and Symptoms Possible Cause Solutions No AC Power Output STATUS illuminates the red LED a Blinking fast Over input voltage Check input voltage OVP Reduce input voltage b Blinking slowly Low input voltage Recharge battery UVP Check connections and the cable c Blinking Intermittently Thermal shutdown Improve ventilation OTP Make sure ventilation shafts in the inverter are not obstructed Lower ambient temperature d Solid ON Short circuit or Wiring Check AC wiring for error short circuit Overload OLP Reduce the load 22 COT EIX 5 Maintenance To keep your inverter operating properly there is very little maintenance required You should clean the exterior periodically with a damp cloth to prevent accumulation of dust and dirt At the same time ti
5. DIP switch Output Waveform Pure Sine Wave THD 3 Efficiency Typ 88 090 91 096 92 096 90 090 93 090 94 090 No Load Current Draw Max 1 45A 0 75A 0 40A 1 40A 0 70A 0 40A Stand By Current Draw Max 0 28A 0 15A 0 09A 0 28A 0 15A 0 09A 10 5 15 21 0 30 42 60 10 5 15 21 0 30 42 60 Input Voltage Range VDC VDC VDC VDC VDC VDC Input Level Indicator Red Orange Green LED Load Level Indicator Failure Indicator Red LED Overload Short Circuit Reverse Polarity Fuse Protection Over Under Input Voltage Over Temperature Remote Control Unit CR 6 CR 8 Optional Certified UL CUL 458 p Safety Standards Certified EN 60950 1 SK1500 148 only meet UL 458 Certified EN 55022 EN 55024 EN 61000 3 2 EN 61000 3 3 EMG DEE EN 61000 4 2 3 4 5 6 8 11 E13 mark Operating Temperature Range 0 40 C Storage Temperature Range 30 C 70 C Cooling Loading controlled cooling fan Dimension WxHxD 191x88 5x370 mm 7 519x3 484x1 4 567 inch Weight 5 3 kg 11 68 Lbs Note The specifications are subject to change without notice COT EIX Item SK2000 112 SK2000 124 SK2000 148 SK2000 212 SK2000 224 SK2000 248 Rated Power 2000W Load 101 115 3min Surge Power 4000W 3 sec resistive Input voltage 12V 24V 48V 12V 24V 48V Output Voltage 100 110 120V 5 22
6. S Fb gr wel O D NGC A NC e DD 0 CoTeK SK700 151 0 5 944 SK1000 154 0 6 062 SK1500 163 0 6 417 nm o num SK700 179 0 7 047 SK1000 182 0 7 165 SK1500 191 0 7 519 SK700 72 0 2 835 SK1000 88 5 3 484 SK1500 88 5 3 484 COTEI e N 620 Te o Lm Eue RF oo Q 292 o 50 8 Tol oo oo S Oo o0 N Sg lt OD o0 mi DIN e n ec C R Lee r SSS e 1999 ED g BERR ris ID 8 166 0 6 535 209 00 8 228 COTEK 3 Introduction This power inverter series is one of the most advanced line of mobile AC power systems To get the most effective power inverter it must be installed and used properly Please read the instructions of this manual before you install and operate this model 3 1 Front Panel 3 1 1 Front view 8 COTEGK PURE SINEwAVE INVERTER AN H S L J remote II 080 FREQ AC OUTPUT UUDUUUUDLUDUUUL AC OUTPUT 3 1 2 ON OFF REMOTE Main switch a Before installing the inverter you need to ensure the main switch must be OFF SK700 SK1000 SK1500 SK2000 SR3000 b Before using the remote unit you need to ensure the main switch must be REMOTE
7. voltage drop Increasing DC cable size helps improve the situation We recommends the following cables for optimum inverter performance Apply both 120V and 230V versions SK700 112 212 6 100 A SR 00 124 224 6 50 A SK700 148 248 8 30 A SK1000 112 212 2 150 A SK1000 124 224 4 80 A SK1000 148 248 6 40 A SK1500 112 212 2 200 A SK1500 124 224 4 100 A SK1500 148 248 6 50 A SK2000 112 212 2 0 250 A SK2000 124 224 1 0 125 A SK2000 148 248 4 70 A SK3000 112 212 4 0 400 A SK3000 124 224 2 0 200 A SK3000 148 248 4 100 A COTEK 3 5 1 Connect the cables to the power input terminals on the rear panel of the inverter The red terminal is represents positive and black terminal represents negative Insert the cables into the terminals and tighten the screw to clamp the wires securely WARNING Ensure all the DC connections are tight torque to 9 10 ft lbs 11 7 13 Nm Loose connections may cause overheat and fire WARNING The installation of a fuse must be on a positive cable Failure to place a fuse on cables running between the inverter and battery may cause damage to the inverter and will void warranty Also use only high quality copper wire and keep cable length short a maximum of 3 6 feet U I U 1 en 1 M8 SCREW I
8. 0 230 240V 3 Frequency 50 60Hz 0 05 Selectable by DIP switch Output Waveform Pure Sine Wave THD lt 3 Efficiency Typ 89 0 92 0 93 0 91 0 94 0 95 0 No Load Current Draw Max 2 8A 1 5A 0 7A 2 64A 1 32A 0 65A Stand By Current Draw Max 0 60A 0 30A 0 15A 0 60A 0 25A 0 15A 10 5 15 21 0 30 42 60 10 5 15 21 0 30 42 60 l t Volt R nput Voltage Range VDC VDC VDC VDC VDC VDC Input Level Indicator Red Orange Green LED Load Level Indicator Failure Indicator Red LED Overload Short Circuit Reverse Polarity Fuse Protection Over Under Input Voltage Over Temperature Remote Control Unit CR 6 CR 8 Optional Safety Standards meet UL 458 Certified EN 60950 1 Certified EN 55022 EN 55024 EN 61000 3 2 EN 61000 3 3 EMG POC GATER EN 61000 4 2 3 4 5 6 8 11 E13 mark Operating Temperature Range 0 40 Storage Temperature Range 30C 70 C Cooling Loading controlled cooling fan Dimension WxHxD 209x166x368 mm 8 228x6 535x14 488 inch Weight 9 7 kg 21 38 Lbs Note The specifications are subject to change without notice COT EIX Item SK3000 112 SR3000 124 SK3000 148 SK3000 212 SK3000 224 SK3000 248 Rated Power 3000W Load 101 115 3min Surge Power 6000W 3 sec resistive Input voltage 12V 24V 48V 12V 24V 4
9. 8V Output Voltage 100 110 120V 5 220 230 240V 4 396 Frequency 50 60Hz 0 05 Selectable by DIP switch Output Waveform Pure Sine Wave THD 3 Efficiency Typ 88 096 91 096 92 096 90 096 93 096 94 096 No Load Current Draw Max 3 0A 1 6A 0 8A 2 8A 1 5A 0 7A Stand By Current Draw Max 0 55A 0 35A 0 19A 0 55A 0 35A 0 19A 10 5 15 21 0 30 42 60 10 5 15 21 0 30 42 60 Input Voltage Range VDC VDC VDC VDC VDC VDC Input Level Indicator Red Orange Green LED Load Level Indicator Failure Indicator Red LED Overload Short Circuit Reverse Polarity Fuse Protection Over Under Input Voltage Over Temperature Remote Control Unit CR 6 CR 8 Optional Safety Standards meet UL 458 Certified EN 60950 1 Certified EN 55022 EN 55024 EN 61000 3 2 EN 61000 3 3 EMG FCC Class A EN 61000 4 2 3 4 5 6 8 11 E13 mark Operating Temperature Range 0 40 C Storage Temperature Range 30 C 70 C Cooling Loading controlled cooling fan Dimension WxHxD 209x166x386 mm 8 228x6 535x15 197 inch Weight 11 kg 24 25 Lbs Note The specifications are subject to change without notice 1 This test condition is normal DC input 13 5V and Temperature 25 C COTEK 2 3 Mechanical Drawings SK700 33 5 1 318 SK1000 43 5 1 712 SK1500 43 5 1 712 S S SE N ToN o t 0 d Foi Oost 9 LL bd cool S Gool N m RR N i nao A ES Sols 2 EE L oo01 oe
10. COT EIC SR Series Pure Sine Wave Inverter S Manual User COT EIX Table of Contents 1 Important Safety Information eeeeeeeeeeeeees 1 1 General Safety Precautions ccccee eee ee cece eeeeeeeeeeeeeenees 1 2 Battery e tn CD CI 2 14 Applicaton eis emetre tales censi mds 2 2 Electrical Performance isset pe se pen Rep En imme AE EES 2 3 Mechanical DrAWINGS ces sonatenic ets Errat eee nuns puto paths RR AE eter 3 Tut ET e a a del el PAE EE CAMERE SII RT TO STER 3 3 Protections ME 3 4 EO oasi meten cats em ce ae 3 5 DC Wiring Connections cccc cece cece eee eee eect eeee eee eeeneeee 3 6 AC Safety Ground inG sicssaicesncocedvcnidaevonssecbesen ces eadeekeesssoesseraes 3 7 Inverter OCT ANON scien gEeR deeg Eege 4 IroubleshoOlUlg ues aci ais NEE ee 5 Meter EE 6 NEE GO N N COT EIX 1 Important Safety Information WARNING Before using the Inverter read and save the safety instructions 1 1 General Safety Precautions T Do not expose the Inverter to rain snow spray bilge or dust To reduce risk of hazard do not cover or obstruct the ventilation openings Do not install the Inverter in a zero clearance compartment Overheating may result 1 1 2 To avoid a risk of fire and electronic shock make sure that existing 1 1 3 wiring is in good electr
11. blow the internal fuse and may damage the inverter permanently DC Input Voltage GEN Minimum Maximum 12 V 10 5 15 0 24 V 21 0 30 0 48 V 42 0 60 0 3 2 4 Use wire 8 AWG to connect Chassis ground with vehicle chassis WARNING Operating the inverter without a proper ground Connection may cause an electrical hazard 3 3 Protection Features DC Input VDC Over Temperature Protection Model Over Voltage Under Under Voltage INTERIOR HEAT SINK Shut Voltage Shut Shut Shut Restart Alarm Restart Restart Restart down down down down 12V 15 3V 14 3V 11 0V 10 2V 12 7V 24 V 30 6V 28 8V 22 0V 20 3V 25 2V 70 C 45 C 90 C 60 C 48V 61 0V 58 1V 44 0V 40 8V 49 7V 15 COTEK 3 4 Installation The power inverter should be installed in an environment that meets the following requirements 3 4 1 3 4 2 3 4 3 3 4 4 3 4 5 3 4 6 Dry Do not allow water to drip on or enter into the inverter Cool Ambient air temperature should be between OC and 40 C the cooler the better Safe Do not install the inverter in a battery compartment or other areas where flammable fumes may exist such as fuel storage areas or engine compartments Ventilated Keep the inverter a distance as least 1 inch away from surrounding things Ensure the ventilation shafts on the rear and the bottom of the unit are not obstructed
12. enter into the Power saving mode EHE DISABLE DISABLE DISABLE OFF OFF OFF 15W 20W 40W ON OFF OFF 25W 40W 80W OFF ON OFF 40W 55W 125W ON ON OFF 50W 75W 170W OFF OFF ON 65W 95W 210W ON OFF ON 75W 115W 245W OFF ON ON 85W 135W 280W ON ON ON COTEK 3 1 8 AC outlets available North America GFCl NEMA 5 20R C LI Q NEMA 5 15R Continental European A Australia Nevv Zealand United Ringdom Universal HARD VVIRE PEA SAR Austraia New Zealand 2S8 Universal SE ERES ONE e AE e O O 9 9 COT EIX 3 2 Rear Panel DC INPUT POS NEG SR700 SR1000 SK1500 SK2000 SK3000 POS D P m C INPUT OJ o NEGC Cul o o PORT VVARNING poar Le 6 Se UNIT o ai IO 3 2 1 Remote Port The SK Series Inverter is compatible with any of the remote controllers CR 6 CR 8 Before using the remote unit you need to ensure the main switch is in the REMOTE position and the input voltage of the power inverter is the same as it of the remote unit 3 2 2 Fan Ventilation Be sure to keep it a distance at least 1 inch form surrounding things 14 COTEK 3 2 3 DC Input Terminal Connect DC input terminal to 12V 24V 48V battery or the other power sources represents positive and represents negative Reverse polarity connection will
13. ghly reactive amp capacitive loads at start moment m Tri Color indicators show input voltage amp output load level E Loading controlled cooling fan m Advanced microprocessor E Input Protection Reverse Polarity Fuse Under Voltage Over Voltage Output Protection Short circuit Overload Over temperature 2 1 Application 2 1 1 Power tools circular saws drills grinders sanders buffers weed and hedge trimmers air compressors etc 2 1 2 Office equipment computers printers monitors facsimile machines scanner etc 2 1 3 Household appliances vacuum cleaners fans fluorescent and incandescent lights shavers sewing machines 2 1 4 Kitchen appliances coffee makers blenders ice markers toasters etc 2 1 5 Industrial equipment metal halide lamp high pressure sodium lamp etc 2 1 6 Home entertainment electronics television VCRs video games stereos musical instruments satellite equipment etc COT EIX 2 2 Electrical Performance Item SR 700 112 SK700 124 SK700 148 SK700 212 SK700 224 SR 700 248 Rated Power 700W Load 101 115 3min Surge Power 1400W 3 sec resistive Input voltage 12V 24V 48V 12V 24V 48V Output Voltage 100 110 120V 5 220 230 240V 4 396 Frequency 50 60Hz 0 05 selectable by DIP switch Output Waveform Pure Sine Wave THD lt 3 Efficie
14. ghten the screws on the DC input terminals 6 Warranty 23 We guarantee this product against defects in materials and workmanship for a period of 24 months from the date of purchase and will repair or replace any defective power inverters if you directly returned them to us with postage paid Please note that Cotek is only responsible for ensuring our products are operational before delivering This warranty will be considered void if the unit has been misused altered or accidentally damaged Cotek is not liable for anything that occurs as a result of the user s fault 2013 10 Al
15. ical condition and not undersized Do not operate the Inverter with damaged or substandard Wiring There are some components in the inverter can cause arcs and sparks To prevent from fire or explosion do not put batteries flammable materials or anything should be ignition protected around the inverter 1 2 Battery Precautions 1 2 1 1 2 2 1 2 3 1 2 4 If battery acid contacts skin or clothing you shall wash it out with soap and water immediately If battery acid contacts your eyes you shall wash it out with cold running water for at least 20 minutes and get medical attention immediately Never smoke or make a spark or flame in the vicinity of the battery or the engine Do not drop a metal tool on the battery The resulting spark or short circuit on the battery of other electrical part may cause an explosion Remove personal metal items such as rings bracelets necklaces and watches when operating with a lead acid batteries Doing so may cause short circuit and very high temperature which can melt metal items and even burn you COTEK 2 Features E DC input socket availability is suitable for different user scenarios m Power ON OFF remote control m E13 CE FCC approved m Pure sine wave output THD lt 3 m Output frequency 50 60Hz selectable by DIP switch a Input amp output fully isolation m Power Saving Mode to save energy except SK200 and SK350 m High efficiency 89 9496 m Driving hi
16. ncy Typ 89 0 91 0 92 0 91 0 93 0 94 0 No Load Current Draw Max 1 25A 0 64A 0 31A 1 20A 0 60A 0 28A Stand By Current Draw Max 0 25A 0 15A 0 08A 0 25A 0 15A 0 08A 10 5 15 21 0 30 42 60 10 5 15 21 0 30 42 60 Input Voltage Range VDC VDC VDC VDC VDC VDC Input Level Indicator Red Orange Green LED Load Level Indicator Failure Indicator Red LED Overload Short Circuit Reverse Polarity Fuse Over Under Input Voltage Over Temperature CR 6 CR 8 Certified UL CUL 458 Protection Remote Control Unit Optional Safety Standards Certified EN 60950 1 SK700 148 only meet UL 458 Certified EN 55022 EN 55024 EN 61000 3 2 EN 61000 3 3 EMG BEES EN 61000 4 2 3 4 5 6 8 11 E13 mark Operating Temperature Range 0 40 C Storage Temperature Range 30 C 70 C Cooling Loading controlled cooling fan Dimension WxHxD Weight 179x72x273 mm 7 047x2 835x10 748 inch 3 4kg 7 49Lbs Note The specifications are subject to change vvithout notice COT EIX Item SK1000 112 SK1000 124 SK1000 148 SK1000 212 SK1000 224 SK1000 248 Rated Power 1000W Load 101 115 3min Surge Power 2000W 3 sec resistive Input voltage 12V 24V 48V 12V 24V 48V Output Voltage 100 110 120V 5 220 230 240V 4 396 Frequency 50 60Hz 0 05 Selectable by DIP switch Output Waveform Pure Sine Wave THD l
17. s AC output to input safety ground is not present so that the utility neutral is only connected to ground at your breaker panel as required Ground Fault Circuit Interrupters GFCI Installations in Recreational Vehicles for North American approvals will require GFCI protection of all branch circuit connected to the AC output of the hardwire terminal equipped with Inverter In addition electrical codes require GFCI protection of certain receptacles in residential installations While the pure sine wave output of the Inverter is equivalent to the waveform provided by utilities compliance with UL standards requires us to test and recommend specific GFCI Cotek has tested the following GFCI protected 20A receptacles and found that they functioned properly when connected to the output of the Inverter 20 COT EIX 21 3 7 Inverter Operation To operate the power inverter use the ON OFF switch on the Front panel to turn the power on Then the power inverter is ready to deliver AC power to your loads If there is several loads use turn them on separately after the inverter is ON in order to prevent OVP resulted from the surge power 3 7 1 3 7 2 3 3 Set the power switch to ON position and the buzzer will send out Beep sounds at the moment Then the inverter will make self diagnosis and the LED s indicators will also appear various colors Finally the buzzer will Beep again and the Input Level and Status
18. t 3 Efficiency Typ 89 0 92 0 93 0 91 0 94 0 95 0 No Load Current Draw Max 1 43A 0 75A 0 38A 1 25A 0 65A 0 35A Stand By Current Dravv Max 0 25A 0 15A 0 09A 0 25A 0 15A 0 09A 10 5 15 21 0 30 42 60 10 5 15 21 0 30 42 60 VDC VDC VDC VDC VDC VDC Input Voltage Range Input Level Indicator Red Orange Green LED Load Level Indicator Failure Indicator Red LED Overload Short Circuit Reverse Polarity Fuse Protection Over Under Input Voltage Over Temperature Remote Control Unit CR 6 CR 8 Optional Certified UL CUL 458 E Safety Standards Certified EN 60950 1 SK1000 148 only meet UL 458 Certified EN 55022 EN 55024 EN 61000 3 2 EN 61000 3 3 SES DEE EN 61000 4 2 3 4 5 6 8 11 E13 mark Operating Temperature Range 0 40 Storage Temperature Range 30 C 70 C Cooling Loading controlled cooling fan Dimension WxHxD 182x88 5x340 mm 7 165x3 484x13 386 inch Weight 4 8kg 10 58Lbs Note The specifications are subject to change without notice COT EIX Item SK1500 112 SK1500 124 SK1500 148 SK1500 212 SK1500 224 SK1500 248 Rated Power 1500W Load 101 11596 3min 3000W 3 sec resistive Surge Power Input voltage 12V 24V 48V 12V 24V 48V Output Voltage 100 110 120V 5 220 230 240V 4 396 Frequency 50 60Hz 0 05 Selectable by
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