1. Entwodiksyon
This manual provides essential information for the safe and efficient operation of your COTEK SD3500-112 GFCI Pure Sine Wave Inverter. The SD3500 series offers advanced features such as parallel connectivity, an integrated AC circuit breaker, and an automatic transfer switch (ATS) for a reliable and secure power supply. Please read this manual thoroughly before installation and use to ensure proper functionality and to prevent damage to the unit or connected devices.
2. Enfòmasyon sou Sekirite
Toujou obsève prekosyon sekirite sa yo pou diminye risk chòk elektrik, dife, oswa blesi.
- Sekirite elektrik: Pa louvri envèstisè c laasing. Pa gen pyès ki ka sèvi ak men itilizatè a anndan an. Konfye tout antretyen bay pèsonèl kalifye.
- Vantilasyon: Asire w ke gen ase vantilasyon toutotou envèstisè a. Pa bloke ouvèti vantilasyon yo.
- Anviwònman: Install the inverter in a dry, cool, and well-ventilated area, away from flammable materials, corrosive chemicals, and direct sunlight.
- Koneksyon batri: Connect the inverter directly to a 12V DC battery bank using appropriate gauge cables. Ensure correct polarity (+ to + and - to -). Reverse polarity will damage the inverter.
- Atè: Properly ground the inverter chassis to a reliable earth ground.
- Kapasite chaj: Do not exceed the inverter's rated output power (3500W continuous). Overloading can cause damage and fire hazards.
- Pwoteksyon GFCI: The integrated GFCI outlets provide protection against ground faults. Test the GFCI regularly as per local electrical codes.
3. Pwodwi Features
The COTEK SD3500-112 GFCI Inverter is designed with advanced functionalities for robust performance:
- Pi bon kalite pwodiksyon vag sinis: Provides clean and stable AC power suitable for sensitive electronics.
- Parallel Redundancy Design: Allows for power expansion and enhanced reliability by connecting multiple inverters.
- Automatic Master Mechanism: Optimizes reliability and eliminates single points of failure in multi-inverter setups.
- Built-in Automatic Transfer Switch (ATS): Seamlessly switches between grid power and battery power for uninterrupted supply.
- Integrated AC Circuit Breaker: Provides protection for the AC output.
- Kontwòl ak siveyans a distans: Supports optional remote control (CR-10) and internet connectivity via built-in Ethernet for control from anywhere.
- Selectable Output Voltage/Power Saving Mode: Configurable via DIP switches or remote control.
- Pwoteksyon konplè: Includes reverse polarity (fuse), under/over voltage, short circuit, overload, over temperature, and over voltage pwoteksyon.
- Volim Antre DC Lajtage Range: Accommodates various applications and extreme conditions.
4. Pwodwi souview
Familiarize yourself with the components and connections of your SD3500-112 GFCI inverter.

Figi 4.1: Devan anwo view of the COTEK SD3500-112 GFCI Inverter, showing the main casing and output receptacles.

Figure 4.2: Rear panel of the inverter, detailing the DC input terminals, AC input/output, GFCI outlets, RS-232 remote port, and circuit breaker.

Figi 4.3: Side view showing the cooling fans, essential for maintaining optimal operating temperature.
5. Enstalasyon ak Enstalasyon
Bon enstalasyon enpòtan anpil pou pèfòmans ak sekirite envèstisè a.
- Montaj: Choose a secure, dry, and well-ventilated location. Ensure sufficient clearance for airflow around the inverter, especially near the cooling fans.
- DC Koneksyon Antre:
- Connect the positive (+) terminal of the 12V battery bank to the positive (+) DC input terminal on the inverter.
- Connect the negative (-) terminal of the 12V battery bank to the negative (-) DC input terminal on the inverter.
- Use appropriately sized cables to minimize voltage drop and ensure safe operation. Refer to electrical guidelines for cable sizing based on current and distance.
- Asire w ke tout koneksyon yo sere epi an sekirite.
- Atè: Connect the inverter chassis to a reliable earth ground using a suitable grounding wire.
- Koneksyon Sòti AC:
- Plug your AC appliances directly into the GFCI outlets on the inverter.
- For hardwired applications, consult a qualified electrician to connect to the AC output terminals.
- AC Input Connection (for ATS function): If using the automatic transfer switch, connect a reliable AC power source (e.g., shore power, generator) to the AC input terminals.
- Kontwòl Remote (Si ou vle): If using a remote control unit (e.g., CR-10), connect it to the designated RS-232 port.
Enpòtan: Always ensure the inverter is OFF before making any connections.
6. Operasyon
Follow these steps to operate your COTEK SD3500-112 GFCI inverter:
- Pouvwa sou: Ensure all DC and AC connections are secure. Switch the inverter's main power switch to the "ON" position.
- Endikatè Status: Observe the LED indicators on the inverter (if present) for status such as power, fault, or overload. Refer to the full manual for detailed indicator meanings.
- Konekte chaj: Plug your AC appliances into the GFCI outlets. Ensure the total wattage of connected appliances does not exceed 3500W.
- Tès GFCI: Periodically press the "TEST" button on the GFCI outlets to ensure they are functioning correctly. Press "RESET" after testing.
- Pouvwa ekonomize mòd: If configured, the inverter may enter a power-saving mode when no load or a very light load is detected, reducing quiescent current draw.
- Automatic Transfer Switch (ATS): If an AC input source is connected, the inverter will automatically switch to that source when available, prioritizing it over battery power. When the AC input is lost, it will switch back to inverter (battery) power.
- Pouvwa Off: Disconnect all AC loads, then switch the inverter's main power switch to the "OFF" position.
7. Antretyen
Antretyen regilye asire lonjevite ak fonksyònman serye envèstisè ou a.
- Netwayaj: Kenbe envèstisè a pwòp epi san pousyè ak debri. Sèvi ak yon twal sèk pou siye deyò a. Pa sèvi ak pwodui netwayaj likid.
- Vantilasyon: Ensure cooling vents are clear and unobstructed. Periodically check for dust buildup in the fan areas.
- Koneksyon: Periodically check all DC and AC connections for tightness. Loose connections can cause overheating and poor performance.
- Sante batri: Monitor the health of your battery bank. A weak battery can affect inverter performance.
- Tès GFCI: Test the GFCI outlets monthly to ensure proper function.
NAN. Depanaj
Seksyon sa a adrese pwoblèm komen ou ka rankontre ak envèstisè ou a.
| Pwoblèm | Kòz posib | Solisyon |
|---|---|---|
| Pa gen pwodiksyon AC | Envèstisè a fèmen, volim batri ki batage, overload, internal fault, tripped AC breaker. | Ensure inverter is ON. Check battery voltage. Reduce load. Reset AC breaker. If fault persists, contact support. |
| Overload alarm/shutdown | Chaj konekte a depase kapasite kontinyèl oswa surtansyon varyateur la. | Disconnect some appliances. Restart inverter. Ensure total load is within specifications. |
| Low battery alarm/shutdown | Batri voltage twò ba. | Recharge batteries. Check battery connections and health. |
| Surchof varyateur | Poor ventilation, excessive ambient temperature, prolonged high load. | Ensure clear airflow around vents. Reduce ambient temperature. Reduce load. |
| GFCI a deklanche souvan | Ground fault in connected appliance or wiring. | Disconnect appliances one by one to identify the faulty device. Inspect wiring for damage. |
For issues not listed here or if troubleshooting steps do not resolve the problem, please contact COTEK customer support.
9. Espesifikasyon
Technical specifications for the COTEK SD3500-112 GFCI Pure Sine Wave Inverter.
| Karakteristik | Detay |
|---|---|
| Mak | COTEK |
| Non modèl | SD Series (SD3500-112 GFCI) |
| Antre Voltage | 12 Volts DC |
| Sòti Voltage | X N ACT Volts AC |
| Pouvwa Sòti Kontini | 3500 Watts |
| Pouvwa vag | 6000 VA |
| Sòti Ond | Vag sinis pi |
| Sòti Frekans | 60 Hz |
| Peak Efficiency at Full Load | 90% |
| Ranje tanperati nòmal fonksyònman | -20 ° C a 60 ° C (-4 ° F a 140 ° F) |
| Ranje Tanperati Depo | -40 ° C a 70 ° C (-40 ° F a 158 ° F) |
| Pwa atik | 26.5 liv |
| Dimansyon | 11.14" x 5.04" x 19.53" |
| Itilizasyon Rekòmande | Machin |
| Sous pouvwa | Batri Powered |
10. Garanti ak sipò
The COTEK SD3500-112 GFCI Pure Sine Wave Inverter comes with a 2 Ane Manifakti Garanti.
For technical assistance, warranty claims, or further information, please contact COTEK customer support through their official website or authorized distributors. Please have your model number (SD3500-112 GFCI) and purchase details ready when contacting support.