SK Series Pure Sine Wave Inverter User’s Manual
1. Important Safety Instructions WARNING! Before using the Inverter, read and save the safety instructions. 1-1. General Safety Precautions 1-1-1. 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 wiring is in good electrical condition and not undersized.
2. Features Pure sine wave output (THD < 3%) Output frequency：50 / 60Hz switch selections Input & output fully isolated design Power Saving Mode to conserve energy High efficiency 89~94% Driving highly reactive & capacitive loads at start moment Tri-Color indicators show input voltage & output load level Loading controlled cooling fan Advanced microprocessor Protection：Input low voltage Low battery alarm Overload Short circuit Input over voltage Over temperature 2-1. Application 2-1-1.
2-2. Electrical Performance Specification Model No. Item SK700-112 SK700-124 SK700-148 SK700-212 SK700-224 SK700-248 Continuous Output Po w er 700W Maximum Output Power 770W Surge Rati ng (Max.) 1400W Input voltage Output Voltage 12V 24V 48V 100 / 110 / 120V Frequency +/- 5% 12V 24V 48V 220 / 230 / 240V +/- 3% 50 / 60Hz +/- 0.05% (Switch Selections) Output Wa veform Pure Sine Wave ( THD < 3 % ) Efficiency (full load) Max. *1 89.0% 91.0% 92.0% 91.0% 93.0% 94.
Specification Model No. Item SK1000-112 SK1000-124 SK1000-148 SK1000-212 SK1000-224 SK1000-248 Continuous Output Po w er 1000W Maximum Output Po w er 1100W Surge Rati ng (Max) 2000W Input voltage Output Voltage 12V 24V 48V 100 / 110 / 120V Frequency +/- 5% 50 / 60Hz (Switch Selectable) Output Wa veform 12V 24V 48V 220 / 230 / 240V +/- 3% +/- 0.05% Pure Sine Wave ( THD < 3 % ) Efficiency (full load) Max. *1 89.0% 92.0% 93.0% 91.0% 94.0% 95.0% No Load Current Draw (Max.) 1.
Specification Model No. Item SK1500-112 SK1500-124 SK1500-148 SK1500-212 SK1500-224 SK1500-248 Continuous Output Po w er 1500W Maximum Output Po w er 1650W Surge Rati ng (Max) 3000W Input voltage Output Voltage 12V 24V 48V 100 / 110 / 120V Frequency +/- 5% 12V 24V 220 / 230 / 240V 48V +/- 3% 50 / 60Hz +/- 0.05% (Switch Selectable) Output Wa veform Pure Sine Wave ( THD < 3 % ) Efficiency (full load) Max. *1 88.0% 91.0% 92.0% 90.0% 93.0% 94.0% No Load Current Draw (Max) 1.
Specification Model No. Item SK2000-112 SK2000-124 SK2000-148 SK2000-212 SK2000-224 SK2000-248 Continuous Output Po w er 2000W Maximum Output Po w er 2200W Surge Rati ng (Max) 4000W Input voltage Output Voltage 12V 24V 48V 100 / 110 / 120V Frequency +/- 5% 50 / 60Hz (Switch Selectable) Output Wa veform 12V 24V 220 / 230 / 240V 48V +/- 3% +/- 0.05% Pure Sine Wave ( THD < 3 % ) Efficiency (full load) Max. *1 89.0% 92.0% 93.0% 91.0% 94.0% 95.0% No Load Current Draw (Max) 2.
Specification Model No. Item SK3000-112 SK3000-124 SK3000-148 SK3000-212 SK3000-224 SK3000-248 Continuous Output Po w er 3000W Maximum Output Po w er 3300W Surge Rati ng (Max) 6000W Input voltage Output Voltage 12V 24V 48V 100 / 110 / 120V Frequency +/- 5% 50 / 60Hz (Switch Selectable) Output Wa veform 12V 24V 220 / 230 / 240V 48V +/- 3% +/- 0.05% Pure Sine Wave ( THD < 3 % ) Efficiency (full load) Max. *1 88.0% 91.0% 92.0% 90.0% 93.0% 94.0% No Load Current Draw (Max) 3.
2-3. Mechanical Drawings REMOTE PORT POS(+) NEG(-) 196.00 [7.72] Pure Sine Wave Power Inverter DC INPUT PURE SINE WAVE INVERTER I 0 1000W INPUT LEVEL ON LOAD LEVEL OFF STATUS REMOTE FREQ. S4 S3 S2 S1 PWR. SAV. O AC OUTPUT SK700 179.00[7.05] SK1000 182.00[7.17] SK1500 191.00[7.52] I SK700 71.50[2.83] SK1000 88.00[3.46] SK1500 88.00[3.46] SK700 273.00 [10.75] SK1000 340.00 [13.39] SK1500 370.00 [14.57] SK700 33.5 [1.32] SK1000 43.5 [1.71] SK1500 43.5 [1.
Pure Sine Wave Power Inverter 2000W 56.00 [2.20] SK2000 368.00 [14.49] SK3000 398.00 [15.67] 245.00 [9.65] 166.00 [6.53] 177.00 [6.97] PURE SINE WAVE INVERTER ON I 0 OFF REMO. INPUT LEVEL LOAD LEVEL STATUS FREQ. PWR. SAV. S4 S3 S2 S1 O I AC OUTPUT 209.00 [8.
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 Operations： 3-1-1. Front view： PURE SINE WAVE INVERTER I 0 INPUT LEVEL ON LOAD LEVEL OFF STATUS REMOTE FREQ. S4 S3 S2 S1 PWR. SAV.
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 15.0 30.0 59.6 3-1-4.
3-1-6. Status：Display Power & Fault Status Green LED LED Signal Status Solid Power OK Slow Blink Power Saving Red LED LED Signal Status Fast Blink OVP Slow Blink UVP Intermittent Blink 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↑ load will make the inverter operate normally, a 15W↓ load will enter into the Power saving mode.
3-1-8.
3-2. Rear Panel Operations： DC INPUT POS(+) NEG(-) REMOTE PORT SK700 SK1000 SK1500 CHASSIS GROUND REVERSE POLARITY WILL DAMAGE UNIT SK2000 SK3000 DC INPUT POS(+) NEG(-) WARNING: REVERSE POLARITY WILL DAMAGE UNIT SHOCK HAZARD. DO NOT OPEN. NO USER SERVICEABLE PARTS INSIDE. REMOTE PORT CHASSIS GROUND 3-2-1. Remote Port: The SK Series Inverter is compatible with any of the remote controllers, CR-6, CR-7 or CR-8.
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 blow the internal fuse and may damage the inverter permanently. DC Input Voltage Minimum Maximum Model 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.
3-4. Installation： The power inverter should be installed in an environment that meets the following requirements： 3-4-1. Dry – Do not allow water to drip on or enter into the inverter. 3-4-2. Cool – Ambient air temperature should be between 0℃ and 40℃, the cooler the better. 3-4-3. 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. 3-4-4.
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.
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.
SK700 SK1000 SK1500 DC INPUT POS(+) NEG(-) REMOTE PORT CHASSIS GROUND INLINE FUSE SK2000 SK3000 DC INPUT BATTERY Battery to inverter cable connection POS(+) NEG(-) WARNING: REVERSE POLARITY WILL DAMAGE UNIT SHOCK HAZARD. DO NOT OPEN. NO USER SERVICEABLE PARTS INSIDE. REMOTE PORT CHASSIS GROUND WASHER INLINE FUSE M8 NUT SPRING WASHER RING TERMINAL PVC WIRE BATTERY PLASTIC COVER (RED) PLASTIC COVER (BLACK) Do not place anything between battery cable lug and terminal surface.
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.
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. Set the power switch to “ON” position and the buzzer will send out “Beep” sounds at the moment.
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 a. Blinking fast Over input voltage. ( OVP ) Check input voltage. Reduce input voltage. b. Blinking slowly. Low input voltage. ( UVP ) Recharge battery. Check connections and the cable. c. Blinking Intermittently. Thermal shutdown. ( OTP ) Improve ventilation.
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, tighten the screws on the DC input terminals.
