1. መግቢያ
This manual provides essential instructions for the safe and efficient installation, operation, and maintenance of your COTEK SP-3000-148 High Frequency Pure Sine Wave Inverter. Please read this manual thoroughly before attempting any installation or operation to ensure proper use and to prevent potential hazards. Keep this manual for future reference.
2. የደህንነት መመሪያዎች
የኤሌክትሪክ ንዝረት፣ የእሳት ወይም የጉዳት አደጋን ለመቀነስ የሚከተሉትን የደህንነት ጥንቃቄዎች ሁልጊዜ ይከተሉ፡
- ሁሉንም መመሪያዎች ያንብቡ: Before operating the inverter, read all instructions and cautionary markings on the inverter, the batteries, and all appropriate sections of this manual.
- ብቃት ያላቸው ሰራተኞች; All electrical work should be performed by qualified personnel familiar with battery and inverter systems and their installation.
- የአየር ማናፈሻ; Ensure adequate ventilation around the inverter. Do not install in a zero-clearance compartment.
- እርጥበትን ያስወግዱ; Do not expose the inverter to rain, snow, spray, or bilge water.
- Proper grounding: ኢንቨርተሩ በትክክል መሬት ላይ መቀመጥ አለበት።
- የባትሪ ደህንነት; Work in a well-ventilated area when working with batteries. Wear eye protection and protective clothing. Avoid touching eyes while working near batteries.
- ኃይልን አቋርጥ፡ Before performing any maintenance or cleaning, disconnect all power to the inverter.

Image: Always use appropriate safety equipment when working with electrical systems.
3. የምርት ባህሪዎች
The COTEK SP-3000-148 inverter offers the following key features:
- ለስሱ ኤሌክትሮኒክስ ንፁህ የሲን ሞገድ ውፅዓት።
- Power ON / OFF remote control capability via green terminal.
- Input & output fully isolation for enhanced safety.
- Temperature & load controlled cooling fan for optimal performance and longevity.
- User-friendly interface for ease of operation.
- Type 1 Indoor Aluminum Enclosure for durability and protection.
4. ምርት አብቅቷልview
The COTEK SP-3000-148 is a high-frequency pure sine wave inverter designed to convert 48VDC battery power into stable 120VAC electricity, suitable for a wide range of applications.

ምስል፡ በአጠቃላይ view of the COTEK SP-3000-148 Pure Sine Wave Inverter.
4.1 የኋላ ፓነል

Image: Rear panel of the COTEK SP-3000-148 inverter.
- የኤሲ ውፅዓት ተርሚናል፡- Hardwire connection for 120VAC output.
- DIP መቀየሪያዎች፡- Used for configuring output voltagሠ እና ድግግሞሽ.
- Remote Control Port (Green Terminal): For connecting an optional remote ON/OFF switch.
- የኃይል መቀየሪያ ለኢንቨርተሩ ዋና የማብራት/ማጥፋት ማብሪያ/ማጥፊያ።
- የ LED አመልካቾች Display operational status and fault conditions.
4.2 የፊት ፓነል

Image: Front panel of the COTEK SP-3000-148 inverter.
- የዲሲ የግቤት ተርሚናሎች፡ Positive (+) and Negative (-) terminals for 48VDC battery connection.
- Chassis Ground Terminal: For connecting the inverter to earth ground.
5. መጫን
ትክክለኛ ጭነት የኢንቨርተርዎን ደህንነቱ የተጠበቀ እና ቀልጣፋ አሠራር ለማረጋገጥ ወሳኝ ነው።
5.1 መጫን
- ቦታ፡ Choose a dry, well-ventilated area, away from direct sunlight, heat sources, and flammable materials.
- አቀማመጥ፡- Mount the inverter horizontally on a flat, stable surface. Ensure adequate clearance around the unit for proper airflow.
- ደህንነቱ የተጠበቀ መጫኛ; Use appropriate fasteners to securely mount the inverter to prevent movement or vibration.

Image: Mechanical drawings with dimensions for mounting the SP-3000 series inverter.
5.2 ሽቦ
ሁሉም የኤሌክትሪክ መስመሮች የአካባቢ እና የሀገር አቀፍ የኤሌክትሪክ ኮዶችን ማክበር አለባቸው።
5.2.1 DC Input Connection (48VDC)
- Connect the positive (+) terminal of the inverter to the positive terminal of your 48VDC battery bank.
- Connect the negative (-) terminal of the inverter to the negative terminal of your 48VDC battery bank.
- Use appropriately sized cables and fuses/breakers for the DC input circuit to prevent overcurrent.
5.2.2 AC Output Connection (120VAC Hardwire)
- Connect your AC loads to the hardwire AC output terminal block on the rear panel.
- Ensure proper polarity (Line, Neutral, Ground) for all AC connections.
- Consult a qualified electrician for hardwiring AC circuits.
5.2.3 የመሬት አቀማመጥ
- Connect the chassis ground terminal on the inverter's front panel to a reliable earth ground.
- This connection is essential for safety and to minimize electrical noise.
5.2.4 የርቀት መቆጣጠሪያ ግንኙነት
- Connect an optional remote ON/OFF switch to the green terminal block on the rear panel.
- Refer to the remote control's specific instructions for wiring details.
6. ኦፕሬሽን
6.1 ማብራት / ማጥፋት
- ለማብራት፡- Ensure all connections are secure. Flip the main power switch on the rear panel to the 'ON' position. The LED indicators will illuminate to show operational status.
- ለማጥፋት፡- Flip the main power switch to the 'OFF' position. If using a remote switch, ensure it is also in the 'OFF' position.
6.2 DIP መቀየሪያ ቅንብሮች
The DIP switches on the rear panel allow configuration of the inverter's output voltage and frequency. Refer to the diagram below for specific settings. Always power off the inverter before changing DIP switch settings.

Image: COTEK SP-3000 series specifications and DIP switch settings.
6.2.1 የውጤት ጥራዝtagሠ ምርጫ
The inverter supports various output voltages (100V, 110V, 115V, 120V AC). Adjust DIP switches according to the desired output voltage as indicated in the specifications diagram.
6.2.2 Output Frequency Selection
The inverter can operate at 50Hz or 60Hz. Set the DIP switches to match the required frequency for your region or application.
6.2.3 የኃይል ቆጣቢ ሁኔታ
The inverter features a power saving mode (High Efficiency). Refer to the diagram for enabling or disabling this feature via DIP switches.
6.3 LED አመልካቾች
The inverter is equipped with LED indicators to display its operational status and alert you to potential issues. Consult the specifications diagram for a detailed explanation of each LED's meaning.
7. ጥገና
መደበኛ ጥገና የኢንቨርተርዎን ረጅም ጊዜ እና አስተማማኝ አሠራር ያረጋግጣል።
- ማጽዳት፡ የኢንቨርተሩን ውጫዊ ክፍል በደረቅ ጨርቅ በየጊዜው ያጽዱ። የአየር ማናፈሻ ክፍተቶች ከአቧራ እና ከቆሻሻ የፀዱ መሆናቸውን ያረጋግጡ። ፈሳሽ ማጽጃዎችን አይጠቀሙ።
- ግንኙነቶች፡ Regularly check all DC and AC connections for tightness. Loose connections can cause overheating and poor performance.
- የባትሪ ፍተሻ፡- Inspect your battery bank regularly for corrosion, damage, or signs of leakage.
8. መላ መፈለግ
The SP-3000-148 inverter includes several protection features. If the inverter stops operating or indicates a fault, refer to the table below for common issues and solutions.
| ችግር | ሊሆን የሚችል ምክንያት | መፍትሄ |
|---|---|---|
| No AC Output / Inverter Off | Main switch off, low battery voltage, overload, internal fuse. | Check power switch, charge batteries, reduce load, check DC input fuse. |
| ግቤት ስር-ጥራዝtagሠ ማንቂያ | የባትሪ ጥራዝtagበጣም ዝቅተኛ. | ባትሪዎችን መሙላት ወይም መተካት. |
| የግቤት በላይ-ቮልትtagሠ ማንቂያ | የባትሪ ጥራዝtagበጣም ከፍ ያለ። | Check charging system, ensure correct battery voltage. |
| የውጤት ጭነት | የተገናኘው ጭነት የኢንቨርተር አቅምን ይበልጣል። | ከኢንቨርተሩ ጋር የተገናኘውን አጠቃላይ ጭነት ይቀንሱ። |
| ከሙቀት በላይ | ደካማ የአየር ዝውውር ወይም ከመጠን በላይ ጭነት በመኖሩ ምክንያት የኢንቨርተር ከመጠን በላይ ሙቀት። | Ensure adequate ventilation, reduce load, allow inverter to cool. |
| አጭር ዙር | Short circuit detected on AC output. | Identify and clear the short circuit on the AC output wiring or load. |
9. ዝርዝሮች
The following table details the technical specifications for the COTEK SP-3000-148 Pure Sine Wave Inverter:
| ባህሪ | ዝርዝር መግለጫ |
|---|---|
| ሞዴል | SP-3000-148 |
| ኤሲ ጥራዝtage | 120VAC (Selectable via DIP switch) |
| የኤሲ ደንብ | ± 5% |
| ደረጃ የተሰጠው ኃይል | 3000 ዋ |
| Surge Power (1 Sec) | 6000 ዋ |
| ከፍተኛ የውጤት ኃይል (1 ደቂቃ) | 3450 ዋ |
| የውጤት ሞገድ ቅርጽ | Pure Sine Wave (THD<3% at nominal load) |
| ድግግሞሽ | 60Hz (Selectable via DIP switch) |
| ዲሲ ጥራዝtage | 48VDC |
| ጥራዝtagሠ ክልል | 42.0 ~ 66.0VDC |
| ምንም ጭነት የለም | <1.0A @48VDC |
| የኃይል ቁጠባ ሁነታ | <0.4A @48VDC |
| ውጤታማነት (ከፍተኛ) | 92% |
| ግቤት ስር-ጥራዝtagሠ ጥበቃ | 42.0 ± 0.5 ቪዲሲ |
| ግቤት ስር-ጥራዝtagሠ ማንቂያ | 44.0 ± 0.5 ቪዲሲ |
| ግቤት ስር-ጥራዝtagሠ መልሶ ማግኛ | 50.0 ± 0.5 ቪዲሲ |
| የግቤት በላይ-ቮልትtagሠ ጥበቃ | 66.0 ± 1.0 ቪዲሲ |
| የግቤት በላይ-ቮልትtagሠ መልሶ ማግኛ | 64.0 ± 1.0 ቪዲሲ |
| የውጤት ጭነት | Shutdown output, restart to recover. |
| የውጤት አጭር | Shutdown output, restart to recover. |
| ከሙቀት በላይ | Shutdown output, auto-recovery after cooling. |
| የዲሲ ግቤት ተገላቢጦሽ ፖላሪቲ | በ fuse |
| የአሠራር ሙቀት. | -20 ° ሴ ~ +40 ° ሴ |
| የማከማቻ ሙቀት. & እርጥበት | -30°C ~ +70°C, 10 ~ 95% RH |
| ልኬቶች (W x H x D) | 442 x 239 x 102.5 ሚሜ (17.4 x 9.4 x 4.0 ኢንች) |
| ክብደት | 8.2 ኪግ (18.08 ፓውንድ) |
| ዋስትና | የ 2 ዓመት አምራች |
10. የዋስትና መረጃ
The COTEK SP-3000-148 Pure Sine Wave Inverter comes with a የ 2 ዓመት የአምራች ዋስትና. This warranty covers defects in materials and workmanship under normal use. Please retain your proof of purchase for warranty claims. For detailed warranty terms and conditions, refer to the official COTEK warranty statement or contact customer support.
11. የደንበኛ ድጋፍ
If you encounter any issues not covered in this manual or require technical assistance, please contact COTEK customer support. Have your product model number (SP-3000-148) and purchase information ready when contacting support.