1. Introduzzjoni
This manual provides essential information for the safe and efficient operation of your Cotek SP-3000-112 High Frequency Pure Sine Wave Inverter. This device converts 12V DC power from batteries into 120V AC power, suitable for a wide range of electronic appliances. Please read this manual thoroughly before installation and use, and retain it for future reference.
2. Informazzjoni dwar is-Sigurtà
Failure to follow these safety instructions may result in electric shock, fire, serious injury, or death. Always exercise caution when working with electrical equipment.
- Aqra l-Istruzzjonijiet Kollha: Before operating the inverter, read all instructions and cautionary markings on the inverter, the batteries, and all appropriate sections of this manual.
- Persunal kwalifikat: Installation and servicing should be performed by qualified personnel familiar with batteries and inverters.
- Ventilazzjoni: Ensure adequate ventilation around the inverter. Do not install in a zero-clearance compartment.
- Evita l-Ilma: Do not expose the inverter to rain, snow, spray, or bilge water.
- L-ert kif suppost: L-inverter għandu jkun ertjat kif suppost.
- Sigurtà tal-batterija: Work near lead-acid batteries is dangerous. Batteries generate explosive gases during normal operation. Ensure proper ventilation and wear appropriate personal protective equipment.
- Skonnettja l-Enerġija: Always disconnect the battery supply before performing any maintenance or troubleshooting.
- Vol korretttage: Żgura l-input DC voltage matches the inverter's specifications (12VDC for this model).


3. Prodott Aktarview
3.1 Karatteristiċi ewlenin
- Ħruġ ta' mewġa sinusoidali pura għal elettronika sensittiva.
- Power ON / OFF remote control capability (Green Terminal).
- Input & output fully isolated for enhanced safety.
- Temperature & load controlled cooling fan for optimal performance.
- User-friendly interface with 3-color LED status indicators.
- Multiple protection features: Reverse Polarity (Fuse), Under Voltage / Fuq Voltage, Output Protection (Short Circuit / Overload / Over Temperature).
- E-13 / UL / CE / FCC approved.
3.2 Inverter Components




4. Setup u Installazzjoni
Proper installation is crucial for the safe and efficient operation of your inverter. Refer to local electrical codes and standards.
4.1 Tqegħid
- Install the inverter in a dry, well-ventilated area, away from direct sunlight, heat sources, and flammable materials.
- Ensure sufficient clearance around the inverter for proper airflow, especially around the cooling fan vents.
- Mount the inverter securely on a stable, non-combustible surface.
- Avoid areas where dust, moisture, or corrosive fumes are present.
4.2 Wajers
All wiring must comply with applicable electrical codes and be performed by a qualified electrician.
- L-ertjar: Connect the inverter's chassis ground terminal to a reliable earth ground using appropriate gauge wire.
- Konnessjoni tad-Dħul DC:
- Ensure the battery bank voltage huwa 12VDC.
- Use appropriately sized cables for the DC input to minimize voltage drop and ensure safety. Refer to cable sizing charts based on current and distance.
- Connect the positive (+) terminal of the battery bank to the red (+) terminal on the inverter.
- Connect the negative (-) terminal of the battery bank to the black (-) terminal on the inverter.
- Install a DC-rated fuse or circuit breaker between the battery bank and the inverter's positive terminal, as close to the battery as possible.
- Konnessjoni tal-Output tal-AC:
- Connect your AC loads to the hardwire AC output terminal block.
- Ensure the total load does not exceed the inverter's continuous power rating (3000W).
- Kontroll mill-bogħod (Mhux obbligatorju): Connect the remote control unit to the RJ45 port or use the green terminal for external ON/OFF control if desired.
5. Istruzzjonijiet Operattivi
5.1 Tixgħel/Jitfi
- Biex Tixgħel: Ensure all DC and AC connections are secure. Flip the main power switch on the inverter's rear panel to the 'ON' position. The Power LED indicator should illuminate.
- Biex Tifi: Disconnect all AC loads from the inverter. Flip the main power switch to the 'OFF' position.
5.2 Indikaturi LED
The inverter features 3-color LED status indicators on the control panel (refer to Figure 4) to provide operational feedback:
- LED aħdar: Indicates normal operation and power output.
- LED isfar: Indicates a warning condition, such as low battery voltage or high temperature. The inverter may continue to operate but requires attention.
- LED aħmar: Indicates a fault condition, such as overload, short circuit, or severe over/under voltage. The inverter will shut down to protect itself and connected devices.
5.3 Issettjar tal-Iswiċċ DIP
The DIP switches on the control panel allow for customization of certain inverter parameters, such as output voltage, frequency, and power saving mode. Refer to the detailed specifications table (Figure 5) or the product datasheet for specific configurations. Always adjust DIP switches when the inverter is powered off.
6. Manutenzjoni
Regular maintenance ensures the longevity and reliable operation of your inverter.
- Tindif: Naddaf il-barra tal-inverter perjodikament b'ċarruta niexfa. Kun żgur li l-fetħiet tal-ventilazzjoni huma ħielsa mit-trab u l-fdalijiet. Tużax prodotti tat-tindif likwidi.
- Konnessjonijiet: Regularly check all electrical connections (DC input, AC output, ground) for tightness and corrosion. Loose connections can cause overheating and poor performance.
- Spezzjoni tal-batterija: Inspect batteries for signs of damage, corrosion, or electrolyte leakage. Ensure battery terminals are clean and tight.
- Ambjent: Ivverifika li l-ambjent operattiv jibqa' fil-firxiet speċifikati tat-temperatura u l-umdità.
7 Issolvi l-problemi
Din it-taqsima tipprovdi soluzzjonijiet għal kwistjonijiet komuni li tista' tiltaqa' magħhom. Jekk il-problema tippersisti, ikkuntattja l-appoġġ għall-klijenti.
| Problema | Kawża Possibbli | Soluzzjoni |
|---|---|---|
| L-inverter ma jixgħelx. | No DC input power; Loose battery connections; Blown DC fuse/breaker; Inverter switch OFF. | Iċċekkja l-volum tal-batterijatage; Tighten connections; Replace fuse/reset breaker; Turn inverter switch ON. |
| L-ebda output AC. | Overload; Short circuit; Over-temperature shutdown; Low/High DC input voltage. | Reduce AC load; Check for short circuits in wiring/appliances; Allow inverter to cool; Check battery voltage. |
| Yellow LED illuminated. | Vol tal-batterija baxxatage warning; High temperature warning. | Recharge batteries; Ensure adequate ventilation, reduce load. |
| Red LED illuminated / Inverter shut down. | Overload; Short circuit; Over-temperature; Under/Over voltage. | Identify and correct the fault (e.g., reduce load, fix short, allow cooling, check battery voltage), then restart the inverter. |
| Cooling fan runs constantly or loudly. | High internal temperature due to heavy load or poor ventilation. | Reduce load; Improve ventilation around the inverter. |
8. Speċifikazzjonijiet
The following table outlines the technical specifications for the Cotek SP-3000 Series Pure Sine Wave Inverter, specifically for the SP-3000-112 model.

| Kategorija | Parametru | SP-3000-112 |
|---|---|---|
| Output | AC Voltage | 100 / 110 / 115 / 120VAC ± 5% |
| Qawwa Rated | 3000W | |
| Surge Power (1 Sec.) | 6000W | |
| Qawwa massima tal-Ħruġ (1 Min) | 3450W | |
| Output Waveform | Pure Sine Wave (THD<3%) | |
| Frekwenza | 50 / 60 Hz ±0.5% | |
| Input | DC Voltage | 12VDC |
| Voltage Firxa | 10.5 ~ 16.5VDC | |
| Ebda Kurrent tat-Tagħbija | <3.0A@12VDC | |
| Modalità Iffrankar tal-Enerġija | <0.4A@12VDC | |
| Effiċjenza (Mass.) | 90% | |
| Protezzjoni | Input Under - Voltage Protezzjoni | 10.5 ± 0.3VDC |
| Input Under - Voltage Allarm | 11.0 ± 0.3VDC | |
| Input Under - Voltage Irkupru | 12.0 ± 0.3VDC | |
| Input Over - Voltage Protezzjoni | 16.5 ± 0.3VDC | |
| Input Over - Voltage Irkupru | 14.5 ± 0.3VDC | |
| Tagħbija żejda tal-output | Output ta' għeluq voltage, terġa 'tibda biex tirkupra | |
| Output Qasir | Output ta' għeluq voltage, terġa 'tibda biex tirkupra | |
| Ambjent | Temp operattiv. | -20°C ~ +40°C |
| Ħażna Temp. & Umdità | -30°C ~ +70°C, 10 ~ 95% RH | |
| Ġenerali | Dimensjonijiet (W x H x D) | 442 x 214 x 102 mm (17.4 x 8.4 x 4.0 pulzieri) |
| Piż | 8.2kg (18.1 lbs) | |
| Tkessiħ | Fann li jkessaħ it-temperatura u t-tagħbija kkontrollati |

9. Garanzija u Appoġġ
9.1 Informazzjoni dwar Garanzija
The Cotek SP-3000-112 Pure Sine Wave Inverter comes with a Garanzija tal-Manifattur ta' 2 SninDin il-garanzija tkopri difetti fil-materjali u fix-xogħol taħt użu normali. Jekk jogħġbok żomm il-prova tax-xiri tiegħek għal talbiet ta' garanzija.
9.2 Appoġġ għall-Klijent
For technical assistance, troubleshooting beyond this manual, or warranty inquiries, please contact Cotek customer support through their official website or your point of purchase. Provide your model number (SP-3000-112) and a detailed description of the issue to expedite service.





