1. Utangulizi
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. Taarifa za Usalama
Failure to follow these safety instructions may result in electric shock, fire, serious injury, or death. Always exercise caution when working with electrical equipment.
- Soma Maagizo Yote: Before operating the inverter, read all instructions and cautionary markings on the inverter, the batteries, and all appropriate sections of this manual.
- Wafanyakazi Waliohitimu: Installation and servicing should be performed by qualified personnel familiar with batteries and inverters.
- Uingizaji hewa: Ensure adequate ventilation around the inverter. Do not install in a zero-clearance compartment.
- Epuka Maji: Do not expose the inverter to rain, snow, spray, or bilge water.
- Uwekaji Sahihi: Inverter lazima iwe msingi vizuri.
- Usalama wa Betri: Work near lead-acid batteries is dangerous. Batteries generate explosive gases during normal operation. Ensure proper ventilation and wear appropriate personal protective equipment.
- Ondoa Nguvu: Always disconnect the battery supply before performing any maintenance or troubleshooting.
- Vol. Sahihitage: Hakikisha uingizaji wa DC ujazotage matches the inverter's specifications (12VDC for this model).


3. Bidhaa Imeishaview
3.1 Sifa Muhimu
- Towe la wimbi safi la sine kwa vifaa vya elektroniki nyeti.
- 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 / Juu ya Voltage, Output Protection (Short Circuit / Overload / Over Temperature).
- E-13 / UL / CE / FCC approved.
3.2 Vipengele vya Kibadilishaji




4. Kuweka na Kuweka
Proper installation is crucial for the safe and efficient operation of your inverter. Refer to local electrical codes and standards.
4.1 Uwekaji
- 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.
Wiring
All wiring must comply with applicable electrical codes and be performed by a qualified electrician.
- Kutuliza: Connect the inverter's chassis ground terminal to a reliable earth ground using appropriate gauge wire.
- Muunganisho wa Kuingiza Data wa DC:
- Ensure the battery bank voltage ni 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.
- Muunganisho wa Towe la Kiyoyozi:
- 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).
- Udhibiti wa Mbali (Si lazima): Connect the remote control unit to the RJ45 port or use the green terminal for external ON/OFF control if desired.
5. Maagizo ya Uendeshaji
5.1 Kuwasha / Kuzima
- Kuwasha: 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.
- Kuzima: Disconnect all AC loads from the inverter. Flip the main power switch to the 'OFF' position.
5.2 Viashiria vya LED
The inverter features 3-color LED status indicators on the control panel (refer to Figure 4) to provide operational feedback:
- Kijani cha LED: Indicates normal operation and power output.
- LED ya Njano: Indicates a warning condition, such as low battery voltage or high temperature. The inverter may continue to operate but requires attention.
- LED Nyekundu: 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 Mipangilio ya Kubadilisha 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. Matengenezo
Regular maintenance ensures the longevity and reliable operation of your inverter.
- Kusafisha: 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.
- Viunganisho: Regularly check all electrical connections (DC input, AC output, ground) for tightness and corrosion. Loose connections can cause overheating and poor performance.
- Ukaguzi wa Betri: Inspect batteries for signs of damage, corrosion, or electrolyte leakage. Ensure battery terminals are clean and tight.
- Mazingira: Thibitisha kwamba mazingira ya uendeshaji yanabaki ndani ya viwango maalum vya halijoto na unyevunyevu.
7. Utatuzi wa shida
Sehemu hii inatoa suluhisho kwa matatizo ya kawaida unayoweza kukutana nayo. Ikiwa tatizo litaendelea, wasiliana na huduma kwa wateja.
| Tatizo | Sababu inayowezekana | Suluhisho |
|---|---|---|
| Inverter haina kuwasha. | No DC input power; Loose battery connections; Blown DC fuse/breaker; Inverter switch OFF. | Angalia ujazo wa betritage; Tighten connections; Replace fuse/reset breaker; Turn inverter switch ON. |
| Hakuna pato la 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. | Kiwango cha chini cha betritage 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. Vipimo
The following table outlines the technical specifications for the Cotek SP-3000 Series Pure Sine Wave Inverter, specifically for the SP-3000-112 model.

| Kategoria | Kigezo | SP-3000-112 |
|---|---|---|
| Pato | Voltage | 100 / 110 / 115 / 120VAC ±5% |
| Nguvu Iliyokadiriwa | 3000W | |
| Surge Power (1 Sec.) | 6000W | |
| Kiwango cha Juu cha Nguvu ya Pato (Dakika 1) | 3450W | |
| Pato la Mawimbi | Wimbi la Sine Safi (THD<3%) | |
| Mzunguko | 50 / 60 Hz ±0.5% | |
| Ingizo | DC Voltage | 12VDC |
| Voltage Mbalimbali | 10.5 ~ 16.5VDC | |
| Hakuna Mzigo wa Sasa | <3.0A@12VDC | |
| Njia ya Kuokoa Nguvu | <0.4A@12VDC | |
| Ufanisi (Upeo zaidi) | 90% | |
| Ulinzi | Input Under - Voltage Ulinzi | 10.5 ±0.3VDC |
| Input Under - Voltage Kengele | 11.0 ±0.3VDC | |
| Input Under - Voltage Kupona | 12.0 ±0.3VDC | |
| Input Over - Voltage Ulinzi | 16.5 ±0.3VDC | |
| Input Over - Voltage Kupona | 14.5 ±0.3VDC | |
| Upakiaji wa Pato | Zima sauti ya patotage, anzisha upya ili upate nafuu | |
| Pato Fupi | Zima sauti ya patotage, anzisha upya ili upate nafuu | |
| Mazingira | Joto la Uendeshaji. | -20°C ~ +40°C |
| Halijoto ya Kuhifadhi. & Unyevu | -30°C ~ +70°C, 10 ~ 95% RH | |
| Mkuu | Vipimo (W x H x D) | 442 x 214 x 102 mm (inchi 17.4 x 8.4 x 4.0) |
| Uzito | 8.2kg (pauni 18.1) | |
| Kupoa | Joto na upakiaji unaodhibitiwa na feni ya kupoeza |

9. Udhamini na Msaada
9.1 Taarifa ya Udhamini
The Cotek SP-3000-112 Pure Sine Wave Inverter comes with a Udhamini wa Miaka 2 wa Mtengenezaji. Udhamini huu unashughulikia kasoro katika nyenzo na utengenezaji chini ya matumizi ya kawaida. Tafadhali hifadhi uthibitisho wako wa ununuzi kwa madai ya udhamini.
9.2 Usaidizi kwa Wateja
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.





