Cotek SK120 Series User Manual

Cotek SK120 Series User Manual

Sk120,sk200,sk350 series pure sine wave inverter
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SK120,SK200,SK350 Series
Pure Sine Wave Inverter
User's Manual

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Summary of Contents for Cotek SK120 Series

  • Page 1 SK120,SK200,SK350 Series Pure Sine Wave Inverter User’s Manual...
  • Page 2: Table Of Contents

    Making DC Wiring Connections……...……………………………….. AC Safety Grounding…………………………………………………... Inverter Operation……………………………………………………… 4. Troubleshooting guide……………………………………………………… 5. Maintenance…………………………………………………………………… 6. Warranty……………………………………………………………………….. Copyright :This manual is the copyright of COTEK Electronic lnd. Co., Ltd. Be not allowed to reproduc or copy without permission of the owner.
  • Page 3: Important Safety Information

    1. Important Safety Information WARNING! Before installing and using the Inverter, you need to read the following safety information carefully. 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.
  • Page 4: Features

    2. Features Pure sine wave output (THD < 3%) Output frequency:50 / 60Hz switch selections Input & output completely isolated design High efficiency 84~94% Capable of driving inductive & capacitive loads at the start moment. A LED Indicator with twin color displays all operation status. Loading and temperature controlled cooling fan.
  • Page 5: Electrical Performance

    2-1. Electrical Performance Specification Model No. Item SK120-112 SK120-124 SK120-148 SK120-212 SK120-224 SK120-248 Continuous Output Power 120W Maximum Output Power 132W Surge Rating (Max) 240W Input voltage 12Vdc 24Vdc 48Vdc 12Vdc 24Vdc 48Vdc 100 / 110 / 120Vac +/- 5% 220 / 230 / 240Vac +/- 3% Output Voltage...
  • Page 6 Specification Model No. Item SK200-112 SK200-124 SK200-148 SK200-212 SK200-224 SK200-248 Continuous Output Power 200W Maximum Output Power 220W Surge Rating (Max) 400W Input voltage 12Vdc 24Vdc 48Vdc 12Vdc 24Vdc 48Vdc 100 / 110 / 120Vac +/- 5% 220 / 230 / 240Vac +/- 3% Output Voltage Frequency...
  • Page 7 Specification Model No. Item SK350-112 SK350-124 SK350-148 SK350-212 SK350-224 SK350-248 Continuous Output Power 350W Maximum Output Power 385W Surge Rating (Max) 700W Input voltage 12Vdc 24Vdc 48Vdc 12Vdc 24Vdc 48Vdc 100 / 110 / 120Vac +/- 5% 220 / 230 / 240Vac +/- 3% Output Voltage Frequency...
  • Page 8: Mechanical Drawing Of Socket Type(Power Claw Pp75)

    2-2. Mechanical Drawing of Socket (Power Claw PP75) PURE SINE WAVE INVERTER POWER STATUS 50Hz FREQ. 60Hz AC OUTPUT...
  • Page 9: Mechanical Drawing Of Strip Wire Type

    2-3. Mechanical Drawing of Strip Wire Type POWER STATUS PURE SINE WAVE INVERTER 50Hz FREQ. 60Hz AC OUTPUT...
  • Page 10: Instructions

    3. Instructions This power inverter series is a the member of the most advanced line of mobile AC power systems available. To get the most out of the power inverter, it must be installed and used properly. Please read the instructions in this manual before installation and operation this model.
  • Page 11 3-1-3. Status:Display Power & Fault Status Green LED LED Signal Status Solid Power OK Red LED LED Signal Status Blink (Fast) Blink (Slow) Blink (Intermittently) Solid 3-1-4. AC Output (available Sockets): 3-1-5. DC Input (available type): P P 7 5 C IG A R E T S T R IP P E D W IR E...
  • Page 12: Rear Panel Operation

    3-2. Rear Panel Operation: POWER DC INPUT REMO. REMOTE PORT CHASSIS GROUND DC INPUT POWER REMO. REMOTE PORT CHASSIS GROUND 3-2-1. ON / OFF / REMOTE Main Switch. 3-2-1-1. Before installing the inverter, make sure the main switch must be “OFF”. 3-2-1-2.
  • Page 13 MODE Ⅲ MODE Ⅳ NOTE: Only one of control mode can be presented. When operating. 3-2-2. DC Input Terminals: Connect to 12V / 24V / 48V battery or the other power sources. 【+】is positive,【-】is negative. Reverse polarity connection will blow internal fuse and may damage inverter permanently. DC Input Voltage Model Minimum...
  • Page 14: Protections Features

    3-3. Protections Features: DC Input (VDC) Over Temperature Protection Under Over Voltage Under INTERIOR Model Voltage Voltage Shut- Shut- Alarm Shut-down Restart Restart Restart down down 12 V 11.0V <10.5V 12.5 24 V 22.0V <21.0V 25.0 55℃ 45℃ 44.0V <42.0V 50.0 Note: The specifications are subject to change without notice.
  • Page 15: Making Dc Wiring Connections

    3-4-6. Close to batteries – Avoid excessive cable lengths but do not install the Inverter in the same compartment as batteries. Use the recommended wire lengths and sizes (see section 3-5). Also do not mount the Inverter where it will be exposed to the gases produced by the battery.
  • Page 16: Ac Safety Grounding

    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.
  • Page 17: Inverter Operation

    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 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.
  • Page 18: Troubleshooting Guide

    4. Troubleshooting guide: WARNING! Do not open or disassemble the Inverter. Attempting to service the unit yourself may result in a risk of electrical shock or fire. Problems and Symptoms Possible Cause Solutions “No AC Power Output” STATUS illuminates the red LED a.
  • Page 19: Maintenance

    5. Maintenance: Very little maintenance is required to keep your inverter operating properly. You should clean the exterior of the unit periodically with a damp cloth to prevent accumulation of dust and dirt. At the same time, tighten the screws on the DC input terminals. 6.

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