1. Utangulizi
This manual provides essential information for the safe and efficient operation of your COTEC SP2000-224 Pure Sine Wave Inverter. This advanced inverter offers high efficiency and power density, featuring selectable output voltage and frequency, all housed within a robust aluminum casing. Please read this manual thoroughly before installation and use to ensure proper function and longevity of the device.
2. Taarifa za Usalama
Always observe the following safety precautions to prevent injury and damage to the inverter or connected equipment:
- Uingizaji hewa: Hakikisha uingizaji hewa wa kutosha karibu na inverter. Usizuie fursa za uingizaji hewa.
- Mazingira: Install the inverter in a dry, cool, and well-ventilated area, away from direct sunlight, heat sources, and flammable materials.
- Kutuliza: Properly ground the inverter chassis to prevent electrical shock.
- Uingizaji wa DC: Connect the inverter only to a 24V DC battery bank. Ensure correct polarity (positive to positive, negative to negative). Reverse polarity will damage the unit.
- Pato la AC: Do not overload the inverter. Ensure the total wattage of connected AC devices does not exceed the inverter's rated output.
- Kuhudumia: Usijaribu kufungua au kuhudumia kibadilishaji umeme mwenyewe. Waelekeze wafanyakazi wote waliohitimu huduma.
- Mfiduo wa Maji: Keep the inverter away from water, rain, or excessive moisture.
3. Bidhaa za Bidhaa
The COTEC SP2000-224 Inverter incorporates several advanced features for reliable power conversion:
- Towe la wimbi safi la sine kwa vifaa vya elektroniki nyeti.
- Power ON / OFF remote control capability via a dedicated green terminal.
- Full input and output isolation for enhanced safety.
- Temperature and load-controlled cooling fan for efficient heat dissipation.
- Kiolesura kinachofaa kwa mtumiaji chenye viashiria vya hali ya LED vya rangi 3.
- Output frequency selectable between 50 Hz and 60 Hz via DIP switch.
- Pato voltagInaweza kuchaguliwa kupitia swichi ya DIP.
- Power saving mode adjustable via a variable resistor.
- Comprehensive input protection: Reverse Polarity (via fuse), Under Voltage, Zaidi ya Juztage.
- Comprehensive output protection: Short Circuit, Overload, Over Temperature.
- Certifications: E13, UL, CE, FCC approved.
4. Kuweka na Kuweka
Proper installation is crucial for the inverter's performance and safety.
4.1 Ufungaji wa Kimwili
Mount the inverter securely in a location that meets the safety requirements mentioned in Section 2. Ensure sufficient space around the unit for airflow.

Kielelezo cha 4.1: Mwenye pembe view of the COTEC SP2000-224 Pure Sine Wave Inverter, showcasing its robust blue and gray casing.
4.2 Muunganisho wa Kuingiza Data wa DC
Connect the inverter to a 24V DC battery bank using appropriate gauge cables. Ensure the positive (+) terminal of the inverter connects to the positive terminal of the battery, and the negative (-) terminal of the inverter connects to the negative terminal of the battery. Install an appropriate fuse or circuit breaker in the positive DC line close to the battery.

Kielelezo cha 4.2: Nyuma view of the inverter, highlighting the DC input terminals (red for positive, black for negative), the chassis ground screw, and the remote control terminal.
4.3 Chassis Ground Connection
Connect the chassis ground terminal (labeled 'CHASSIS GROUND') to a reliable earth ground point. This is a critical safety step.
4.4 AC Output and Controls
The inverter features a standard AC outlet and control switches on its front panel.

Kielelezo cha 4.3: Mbele view of the inverter, displaying the AC output socket, the main power switch, LED indicators, and DIP switches for configuration.
4.5 Mipangilio ya Kubadilisha DIP
The inverter features DIP switches for configuring output frequency and voltage. Refer to the specifications table (Section 7) or the product label for specific settings. Ensure the inverter is powered off before adjusting DIP switches.
- Masafa ya Kutoa: Select 50 Hz or 60 Hz based on your regional requirements.
- Pato Voltage: Chagua kiasi cha pato cha AC unachotakatage (e.g., 230VAC for this model).
5. Maagizo ya Uendeshaji
5.1 Kuwasha / Kuzima
After all connections are secure and verified, switch the main power button on the inverter to the 'ON' position. The LED indicators will illuminate to show the inverter's status. To power off, switch the button to 'OFF'. A remote control terminal is also available for external ON/OFF control.
5.2 Viashiria vya LED
The 3-color LED indicators provide visual feedback on the inverter's operational status and any potential faults. Consult the product documentation or the specifications table for a detailed explanation of each LED state.
5.3 Njia ya Kuokoa Nguvu
The power saving mode can be adjusted via a variable resistor. This feature helps reduce quiescent current draw when no load or a very light load is connected, conserving battery power.
5.4 Connecting AC Loads
Plug your AC appliances into the inverter's AC output socket. Ensure the total power consumption does not exceed the inverter's continuous power rating (2000W for this model). For inductive loads (e.g., motors, refrigerators), consider their surge power requirements, which can be significantly higher than their running power.
6. Matengenezo
Regular maintenance ensures optimal performance and extends the lifespan of your inverter.
- Kusafisha: Weka inverter safi na isiyo na vumbi. Tumia kitambaa kikavu kufuta sehemu ya nje. Usitumie visafishaji vya kioevu.
- Uingizaji hewa: Periodically check that the cooling fan and ventilation openings are clear of obstructions.
- Viunganisho: Inspect all DC and AC connections regularly to ensure they are tight and free from corrosion. Loose connections can cause overheating and poor performance.
- Matengenezo ya Betri: Follow the manufacturer's recommendations for your battery bank's maintenance.
7. Utatuzi wa shida
If the inverter is not functioning correctly, refer to the following common issues and solutions:
- Hakuna Nguvu ya Kutoa:
- Check DC input connections and battery voltage.
- Verify the inverter's power switch is ON.
- Check for blown DC input fuses (if applicable).
- Kiashiria cha Upakiaji:
- Reduce the total load connected to the inverter.
- Disconnect and reconnect the load to reset the inverter.
- Over Temperature Indication:
- Ensure adequate ventilation around the inverter.
- Check if the cooling fan is operating.
- Reduce the load if operating in a hot environment.
- Batri ya chini Voltage Alarm/Shutdown:
- Recharge the battery bank.
- Check battery connections for looseness or corrosion.
For persistent issues, contact COTEC customer support.
8. Vipimo
The following table details the technical specifications for the COTEC SP2000 series, with specific values for the SP2000-224 model highlighted where applicable.

Kielelezo cha 8.1: Detailed technical specifications for the COTEC SP-2000 series, including the SP2000-224 model.
| Kipengele | Vipimo |
|---|---|
| Chapa | COTEK |
| Jina la Mfano | SP2000 (SP2000-224 variant) |
| Nguvu Iliyokadiriwa | 2000W |
| Surge Power (1 Sec) | 4000W |
| Ingizo la DC Voltage | 24VDC (Operating Range: 21.0-33.0VDC) |
| Pato la AC Voltage | 230VAC (selectable) |
| Mzunguko wa Pato | 50/60 Hz (inayoweza kuchaguliwa) |
| Pato la Mawimbi | Pure Sine Wave (THD<3% at nominal load) |
| Ufanisi (Upeo) | 93% |
| Kupoa | Temperature & load controlled fan |
| Joto la Uendeshaji | -20°C hadi +40°C |
| Joto la Uhifadhi | -30°C hadi +70°C |
| Vipimo (W x H x D) | Inchi 17.44 x 9.76 x 3.27 (443 x 248 x 83 mm) |
| Uzito wa Kipengee | 1 pounds (approximate, actual unit weight may vary) |
| Vipimo vya Kifurushi | Inchi 19 x 12 x 6 |
| Vyeti | E13, UL, CE, FCC approved |
8.1 Michoro ya Mitambo
For detailed physical dimensions and mounting information, refer to the mechanical drawings below.

Kielelezo cha 8.2: Mechanical drawings providing precise dimensions for installation planning.
9. Udhamini na Msaada
COTEC products are designed for reliability and performance. For warranty information, technical support, or service inquiries, please refer to the warranty card included with your product or visit the official COTEC webtovuti. Weka risiti yako ya ununuzi kama dhibitisho la ununuzi kwa madai ya udhamini.





