1. Uvod
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. Sigurnosne informacije
Failure to follow these safety instructions may result in electric shock, fire, serious injury, or death. Always exercise caution when working with electrical equipment.
- Pročitajte sve upute: Before operating the inverter, read all instructions and cautionary markings on the inverter, the batteries, and all appropriate sections of this manual.
- Kvalificirano osoblje: Installation and servicing should be performed by qualified personnel familiar with batteries and inverters.
- Ventilacija: Ensure adequate ventilation around the inverter. Do not install in a zero-clearance compartment.
- Izbjegavajte vodu: Do not expose the inverter to rain, snow, spray, or bilge water.
- Pravilno uzemljenje: Inverter mora biti pravilno uzemljen.
- Sigurnost baterije: Work near lead-acid batteries is dangerous. Batteries generate explosive gases during normal operation. Ensure proper ventilation and wear appropriate personal protective equipment.
- Odspojite napajanje: Always disconnect the battery supply before performing any maintenance or troubleshooting.
- Ispravan svtage: Osigurajte da je DC ulazni voltage matches the inverter's specifications (12VDC for this model).


3. Proizvod je gotovview
3.1 Ključne značajke
- Čisti sinusni izlaz za osjetljivu elektroniku.
- 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 / Preko Voltage, Output Protection (Short Circuit / Overload / Over Temperature).
- E-13 / UL / CE / FCC approved.
3.2 Komponente invertera




4. Postavljanje i instalacija
Proper installation is crucial for the safe and efficient operation of your inverter. Refer to local electrical codes and standards.
4.1 Postavljanje
- Postavite pretvarač na suho, dobro prozračeno mjesto, dalje od izravne sunčeve svjetlosti, izvora topline i zapaljivih materijala.
- 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 Ožičenje
All wiring must comply with applicable electrical codes and be performed by a qualified electrician.
- Uzemljenje: Connect the inverter's chassis ground terminal to a reliable earth ground using appropriate gauge wire.
- DC ulazni priključak:
- Osigurajte volumen baterijetage je 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.
- Priključak AC izlaza:
- 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).
- Daljinski upravljač (opcionalno): Connect the remote control unit to the RJ45 port or use the green terminal for external ON/OFF control if desired.
5. Upute za rad
5.1 Uključivanje/isključivanje
- Za uključivanje: 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.
- Za isključivanje: Disconnect all AC loads from the inverter. Flip the main power switch to the 'OFF' position.
5.2 LED indikatori
The inverter features 3-color LED status indicators on the control panel (refer to Figure 4) to provide operational feedback:
- Zelena LED: Indicates normal operation and power output.
- Žuti LED: Indicates a warning condition, such as low battery voltage or high temperature. The inverter may continue to operate but requires attention.
- Crvena LED: 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 Postavke DIP prekidača
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. Održavanje
Redovito održavanje osigurava dugotrajnost i pouzdan rad vašeg invertera.
- Čišćenje: Povremeno čistite vanjski dio pretvarača suhom krpom. Provjerite jesu li ventilacijski otvori bez prašine i ostataka. Nemojte koristiti tekuća sredstva za čišćenje.
- Veze: Regularly check all electrical connections (DC input, AC output, ground) for tightness and corrosion. Loose connections can cause overheating and poor performance.
- Provjera baterije: Inspect batteries for signs of damage, corrosion, or electrolyte leakage. Ensure battery terminals are clean and tight.
- Okruženje: Provjerite ostaje li radno okruženje unutar navedenih raspona temperature i vlažnosti.
7. Rješavanje problema
Ovaj odjeljak nudi rješenja za uobičajene probleme s kojima se možete susresti. Ako se problem nastavi, obratite se korisničkoj podršci.
| Problem | Mogući uzrok | Otopina |
|---|---|---|
| Inverter se ne uključuje. | No DC input power; Loose battery connections; Blown DC fuse/breaker; Inverter switch OFF. | Provjerite voltage; Tighten connections; Replace fuse/reset breaker; Turn inverter switch ON. |
| Nema AC izlaza. | 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. | Slaba baterija voltage 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. |
| Ventilator za hlađenje radi stalno ili glasno. | Visoka unutarnja temperatura zbog velikog opterećenja ili slabe ventilacije. | Reduce load; Improve ventilation around the inverter. |
8. Specifikacije
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 | Parametar | SP-3000-112 |
|---|---|---|
| Izlaz | AC Voltage | 100 / 110 / 115 / 120VAC ±5% |
| Nazivna snaga | 3000 W | |
| Surge Power (1 Sec.) | 6000 W | |
| Maksimalna izlazna snaga (1 min) | 3450 W | |
| Izlazni valni oblik | Pure Sine Wave (THD<3%) | |
| Frekvencija | 50 / 60 Hz ±0.5% | |
| Ulazni | DC Voltage | 12VDC |
| Voltage Domet | 10.5 ~ 16.5 VDC | |
| Struja bez opterećenja | <3.0 A pri 12 VDC | |
| Način rada za uštedu energije | <0.4 A pri 12 VDC | |
| Učinkovitost (maks.) | 90% | |
| Zaštita | Input Under - Voltage Zaštita | 10.5 ±0.3 VDC |
| Input Under - Voltage Alarm | 11.0 ±0.3 VDC | |
| Input Under - Voltage Oporavak | 12.0 ±0.3 VDC | |
| Input Over - Voltage Zaštita | 16.5 ±0.3 VDC | |
| Input Over - Voltage Oporavak | 14.5 ±0.3 VDC | |
| Preopterećenje izlaza | Izlaz isključivanja voltage, ponovno pokrenite za oporavak | |
| Izlaz kratak | Izlaz isključivanja voltage, ponovno pokrenite za oporavak | |
| okoliš | Radna temp. | -20°C ~ +40°C |
| Temp. skladištenja. & Vlažnost | -30°C ~ +70°C, 10 ~ 95% RH | |
| General | Dimenzije (Š x V x D) | 442 x 214 x 102 mm (17.4 x 8.4 x 4.0 inča) |
| Težina | 8.2 kg (18.1 lbs) | |
| Hlađenje | Ventilator za hlađenje s kontrolom temperature i opterećenja |

9. Jamstvo i podrška
9.1 Informacije o jamstvu
The Cotek SP-3000-112 Pure Sine Wave Inverter comes with a 2-godišnje jamstvo proizvođačaOvo jamstvo pokriva nedostatke u materijalu i izradi pri normalnoj uporabi. Molimo sačuvajte dokaz o kupnji za potrebe jamstvenog zahtjeva.
9.2 Korisnička podrška
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.





