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 sva uputstva: 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.
- Isključite napajanje: Always disconnect the battery supply before performing any maintenance or troubleshooting.
- Correct Voltage: Uverite se da je DC ulazna voltage matches the inverter's specifications (12VDC for this model).


3. Proizvod je gotovview
3.1 Ključne karakteristike
- 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 / Over Voltage, Output Protection (Short Circuit / Overload / Over Temperature).
- E-13 / UL / CE / FCC approved.
3.2 Inverter Components




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
- Instalirajte inverter na suhom, dobro prozračenom mjestu, dalje od direktne 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 ulazna veza:
- Osigurajte napunjenost 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 naizmjeničnog 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 (opciono): Connect the remote control unit to the RJ45 port or use the green terminal for external ON/OFF control if desired.
5. Uputstvo za upotrebu
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: Označava normalan rad i izlaznu snagu.
- Žuta LED dioda: Indicates a warning condition, such as low battery voltage or high temperature. The inverter may continue to operate but requires attention.
- Crveni 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
Redovno održavanje osigurava dugotrajnost i pouzdan rad vašeg invertera.
- čišćenje: Povremeno čistite vanjski dio invertera suhom krpom. Osigurajte da su ventilacijski otvori bez prašine i ostataka. Ne koristite 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.
- Pregled baterije: Inspect batteries for signs of damage, corrosion, or electrolyte leakage. Ensure battery terminals are clean and tight.
- Okruženje: Provjerite da li radno okruženje ostaje unutar specificiranih raspona temperature i vlažnosti.
7. Otkrivanje problema
Ovaj odjeljak pruža rješenja za uobičajene probleme s kojima se možete susresti. Ako problem i dalje postoji, obratite se korisničkoj podršci.
| Problem | Mogući uzrok | Rješenje |
|---|---|---|
| Inverter se ne uključuje. | No DC input power; Loose battery connections; Blown DC fuse/breaker; Inverter switch OFF. | Provjerite zapreminu baterijetage; 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. | Niska zapremina baterijetage 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. | High internal temperature due to heavy load or poor ventilation. | 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 | 3000W | |
| Surge Power (1 Sec.) | 6000W | |
| Maksimalna izlazna snaga (1 min) | 3450W | |
| Izlazni talasni oblik | Pure Sine Wave (THD<3%) | |
| Frekvencija | 50 / 60 Hz ±0.5% | |
| Input | DC Voltage | 12VDC |
| Voltage domet | 10.5 ~ 16.5 VDC | |
| Struja bez opterećenja | <3.0A@12VDC | |
| Režim uštede energije | <0.4A@12VDC | |
| Efikasnost (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 | |
| Output Overload | Voltage, ponovo pokrenite za oporavak | |
| Izlaz kratak | Voltage, ponovo pokrenite za oporavak | |
| Životna sredina | Radna temp. | -20°C ~ +40°C |
| Temperatura skladištenja. & Vlažnost | -30°C ~ +70°C, 10 ~ 95% RH | |
| Generale | 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 kontroliran temperaturom i opterećenjem |

9. Garancija i podrška
9.1 Informacije o garanciji
The Cotek SP-3000-112 Pure Sine Wave Inverter comes with a 2-godišnja garancija proizvođačaOva garancija pokriva nedostatke u materijalu i izradi pri normalnoj upotrebi. Molimo sačuvajte dokaz o kupovini za potrebe reklamacije.
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.