1. Вовед
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. Информации за безбедност
Failure to follow these safety instructions may result in electric shock, fire, serious injury, or death. Always exercise caution when working with electrical equipment.
- Прочитајте ги сите инструкции: Before operating the inverter, read all instructions and cautionary markings on the inverter, the batteries, and all appropriate sections of this manual.
- Квалификуван персонал: Installation and servicing should be performed by qualified personnel familiar with batteries and inverters.
- Вентилација: Ensure adequate ventilation around the inverter. Do not install in a zero-clearance compartment.
- Избегнувајте вода: Do not expose the inverter to rain, snow, spray, or bilge water.
- Правилно заземјување: The inverter must be properly grounded.
- Безбедност на батеријата: Work near lead-acid batteries is dangerous. Batteries generate explosive gases during normal operation. Ensure proper ventilation and wear appropriate personal protective equipment.
- Исклучете го напојувањето: Always disconnect the battery supply before performing any maintenance or troubleshooting.
- Точен томtage: Обезбедете ја јачината на DC влезотtage matches the inverter's specifications (12VDC for this model).


3. Производот завршиview
3.1 Клучни карактеристики
- Излез со чист синусен бран за чувствителна електроника.
- 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. Поставување и инсталација
Proper installation is crucial for the safe and efficient operation of your inverter. Refer to local electrical codes and standards.
4.1 Поставување
- 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 Wици
All wiring must comply with applicable electrical codes and be performed by a qualified electrician.
- Заземјување: Connect the inverter's chassis ground terminal to a reliable earth ground using appropriate gauge wire.
- Поврзување на DC влез:
- Обезбедете го волуменот на батеријатаtage е 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.
- Приклучок за излез на наизменична струја:
- 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).
- Далечински управувач (опционално): Connect the remote control unit to the RJ45 port or use the green terminal for external ON/OFF control if desired.
5. Упатства за работа
5.1 Вклучување/исклучување
- За вклучување: 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.
- За исклучување: Disconnect all AC loads from the inverter. Flip the main power switch to the 'OFF' position.
5.2 LED индикатори
The inverter features 3-color LED status indicators on the control panel (refer to Figure 4) to provide operational feedback:
- Зелена ЛЕР: Indicates normal operation and power output.
- Жолта LED: Indicates a warning condition, such as low battery voltage or high temperature. The inverter may continue to operate but requires attention.
- Црвена LED диода: 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 Поставки на DIP прекинувачот
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. Одржување
Редовното одржување обезбедува долготрајност и сигурно работење на вашиот инвертер.
- Чистење: Periodically clean the exterior of the inverter with a dry cloth. Ensure ventilation openings are free from dust and debris. Do not use liquid cleaners.
- Врски: Regularly check all electrical connections (DC input, AC output, ground) for tightness and corrosion. Loose connections can cause overheating and poor performance.
- Проверка на батеријата: Inspect batteries for signs of damage, corrosion, or electrolyte leakage. Ensure battery terminals are clean and tight.
- Животна средина: Проверете дали работната средина останува во рамките на наведените опсези на температура и влажност.
7 Смена на проблеми
Овој дел нуди решенија за вообичаени проблеми со кои може да се соочите. Доколку проблемот продолжи, контактирајте ја службата за корисници.
| Проблем | Можна причина | Решение |
|---|---|---|
| Инверторот не се вклучува. | No DC input power; Loose battery connections; Blown DC fuse/breaker; Inverter switch OFF. | Проверете ја јачината на батеријатаtage; Tighten connections; Replace fuse/reset breaker; Turn inverter switch ON. |
| Нема излез од наизменична струја. | 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. | Ниска јачина на батеријатаtage 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. Спецификации
The following table outlines the technical specifications for the Cotek SP-3000 Series Pure Sine Wave Inverter, specifically for the SP-3000-112 model.

| Категорија | Параметар | СП-3000-112 |
|---|---|---|
| Излез | AC Voltage | 100 / 110 / 115 / 120 VAC ± 5% |
| Номинална моќност | 3000 W | |
| Surge Power (1 Sec.) | 6000 W | |
| Максимална излезна моќност (1 мин) | 3450 W | |
| Излезна бранова форма | Pure Sine Wave (THD<3%) | |
| Фреквенција | 50 / 60 Hz ± 0.5% | |
| Влез | DC Voltage | 12 VDC |
| Voltagе опсег | 10.5 ~ 16.5 VDC | |
| Струја без оптоварување | <3.0A@12VDC | |
| Режим на заштеда на енергија | <0.4A@12VDC | |
| Ефикасност (макс.) | 90% | |
| Заштита | Input Under - Voltagд Заштита | 10.5 ± 0.3 VDC |
| Input Under - Voltage Аларм | 11.0 ± 0.3 VDC | |
| Input Under - Voltagд Обнова | 12.0 ± 0.3 VDC | |
| Input Over - Voltagд Заштита | 16.5 ± 0.3 VDC | |
| Input Over - Voltagд Обнова | 14.5 ± 0.3 VDC | |
| Излезно преоптоварување | Исклучување излез voltagд, рестартирајте за да закрепнете | |
| Излез кратко | Исклучување излез voltagд, рестартирајте за да закрепнете | |
| Животна средина | Работна температура. | -20°C ~ +40°C |
| Температура на складирање. & Влажност | -30°C ~ +70°C, 10 ~ 95% RH | |
| Општо | Димензии (Ш x В x Д) | 442 x 214 x 102 mm (17.4 x 8.4 x 4.0 инчи) |
| Тежина | 8.2 кг (18.1 фунти) | |
| Ладење | Контролиран вентилатор за ладење со температура и оптоварување |

9. Гаранција и поддршка
9.1 Информации за гаранцијата
The Cotek SP-3000-112 Pure Sine Wave Inverter comes with a 2-годишна гаранција на производителотОваа гаранција ги покрива дефектите во материјалите и изработката при нормална употреба. Ве молиме задржете го доказот за купување за гаранциски барања.
9.2 Поддршка за корисници
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.