1. Uvod
This manual provides comprehensive instructions for the safe and efficient operation of the SEAFRONT LW-K3010D DC Switching Power Supply. This unit is a high-precision, regulated desktop power supply designed for various applications requiring a stable and efficient DC power source. It can function as either a constant voltage (CV) or constant current (CC) power supply, making it suitable for tasks such as battery charging, PCB production, LED product testing, DC fan electroplating, electrolysis, electronic component aging, and general laboratory use.
The LW-K3010D features a 4-digit digital display for precise readings of voltage and current, along with adjustable controls for fine-tuning output parameters. Please read this manual thoroughly before use to ensure proper setup and operation.
2. Značajke proizvoda
- Professional regulated DC switching power supply.
- Efficient and stable performance.
- Operates as a constant voltage or constant current power supply.
- Integrated protection circuit for enhanced safety.
- 4-digit high-precision digital display for voltage i struja.
- Podesiva voltage output from 0-30V.
- Adjustable current output from 0-10A.
3. Sigurnosne informacije
- Uvijek priključite napajanje na uzemljenu utičnicu.
- Nemojte koristiti uređaj na mokrom ili damp uslovima.
- Osigurajte odgovarajuću ventilaciju kako biste spriječili pregrijavanje.
- Ne otvarajte casing; unutra nema dijelova koje korisnik može sam servisirati. Za servisiranje se obratite kvalifikovanom osoblju.
- Before connecting or disconnecting loads, ensure the power supply is turned off or the output is disabled.
- Izbjegavajte kratki spoj na izlaznim terminalima.
4. Sadržaj paketa
Prilikom raspakivanja, molimo Vas da provjerite da li su sve dolje navedene stavke prisutne i u dobrom stanju:
- 1 x SEAFRONT LW-K3010D DC Switching Power Supply
- 1 x Power Cord (EU Stecker 220V)
- 1 x Uputstvo za upotrebu

Image: The SEAFRONT LW-K3010D power supply unit shown alongside its included EU power cord.
5. Dijagram proizvoda i komponente
Familiarize yourself with the various parts and controls of your power supply:

Image: Front panel of the LW-K3010D with labels for Voltage Display, Current Display, Voltage Indikator, Voltage Settings knob, Current Indicator, Current Setting knob, Power Switch, Earth Output (GND), Negative Output (-), and Positive Output (+).
- Voltage Displej: Prikazuje izlaznu jačinu zvukatage u voltima (V).
- Trenutni prikaz: Prikazuje izlaznu struju u Amperes (A).
- Voltage Indikator: LED indicating constant voltage način.
- Voltage Postavke: Knob to adjust the output voltage.
- Current Indicator: LED indicating constant current mode.
- Trenutna postavka: Knob to adjust the output current limit.
- Prekidač za uključivanje/isključivanje: Glavni prekidač za napajanje jedinice.
- Izlazni priključci: Negative (-), Earth (GND), and Positive (+) terminals for connecting loads.

Image: Rear panel of the LW-K3010D showing the cooling fan, serial number, voltage selector switch (220V), and AC power input socket.
6. Podešavanje
- plasman: Place the power supply on a stable, level surface with adequate ventilation. Ensure that the air intake and exhaust vents (located on the sides and rear) are not obstructed.
- Voltage Izbor: Provjerite voltage selector switch on the rear panel. Ensure it matches your local mains voltage (e.g., 220V for EU). Oprez: Netačan voltagTakav odabir može oštetiti uređaj.
- Priključak za napajanje: Connect the provided power cord to the AC power input socket on the rear panel of the power supply and then to a grounded wall outlet.
- Početne postavke dugmeta: Before turning on the unit, rotate the Voltage and Current setting knobs fully counter-clockwise to their minimum positions.
7. Uputstvo za upotrebu
- Uključeno: Press the On/Off switch on the front panel. The digital displays will illuminate, showing the current voltage i trenutne postavke.
- Setting Voltage: Okrenite Voltage setting knob clockwise to increase the output voltage to the desired level. Observe the Voltage Display for the precise reading.
- Postavljanje ograničenja struje: Rotate the Current setting knob clockwise to set the maximum current limit. This acts as a protective measure for your connected load. If the load attempts to draw more current than this set limit, the power supply will enter constant current (CC) mode, and the Current Indicator LED will light up.
- Priključno opterećenje: Connect your device or circuit to the output terminals. The positive (+) terminal is typically red, the negative (-) terminal is black, and the ground (GND) terminal is yellow. Ensure correct polarity.
- Operacija: The power supply will now deliver the set voltage and current to your load. The displays will show the actual voltage and current being drawn.
- Iskljuciti: Before disconnecting the load, turn the Voltage and Current knobs fully counter-clockwise to their minimum positions, then press the On/Off switch to power off the unit.
8. Održavanje
- čišćenje: Redovno čistite vanjski dio napajanja mekom, suhom krpom. Ne koristite abrazivna sredstva za čišćenje ili rastvarače.
- ventilacija: Ensure that the ventilation openings are free from dust and debris to maintain proper airflow and prevent overheating.
- Skladištenje: Kada se ne koristi duži period, napajanje čuvajte na hladnom i suhom mjestu, dalje od direktne sunčeve svjetlosti i ekstremnih temperatura.
- Nema dijelova koje korisnik može servisirati: Ne pokušavajte sami otvarati ili popravljati uređaj. Za sve servisne radove obratite se kvalifikovanom servisnom osoblju.
9. Otkrivanje problema
Ako imate problema s napajanjem, pogledajte sljedeće uobičajene probleme i rješenja:
- Nema napajanja:
- Provjerite je li kabel za napajanje sigurno spojen i na uređaj i na zidnu utičnicu.
- Provjerite da li je zidna utičnica funkcionalna.
- Ensure the On/Off switch is pressed.
- Potvrdite voltage selector switch on the rear is set correctly for your region.
- No Output Voltage/Current:
- Osigurajte Voltage and Current setting knobs are rotated clockwise from their minimum positions.
- Check if the load is properly connected to the output terminals with correct polarity.
- If the Current Indicator LED is on, the unit is in constant current mode, meaning the load is drawing the maximum set current. Increase the current limit if necessary, or check your load for excessive current draw.
- pregrijavanje:
- Ensure adequate ventilation around the unit. Clear any obstructions from the air vents.
- Reduce the load if it is operating at its maximum capacity for extended periods in a high ambient temperature.
If the problem persists after attempting these solutions, please contact SEAFRONT customer support for assistance.
10. Specifikacije
| Parametar | Vrijednost |
|---|---|
| Model | LW-K3010D |
| Ulazni voltage | 100-240V AC, 50Hz-60Hz |
| Output Voltage | 0-30V DC |
| Izlazna struja | 0-10A DC |
| Voltage Preciznost | 0.01V |
| Current Accuracy | 0.01A |
| Display Type | 4-digit high-precision LED display |
| Efikasnost | > 85% |
| Operativno okruženje | -10°C to +60°C / 30% RH to 90% RH |
| Regulacija opterećenja (Voltage) | 50mV (10% - 100% load) |
| Line Regulation (Voltage) | 20mV (200-240 Vac) |
| Ripple and Noise (pp) | 50mV |
| Dimenzije proizvoda (DxŠxV) | 22 x 7 x 16 cm |
| Težina proizvoda | 1.3 kg |
| Metoda hlađenja | Atmosphere (Fan-cooled) |
11. Garancija i podrška
SEAFRONT products are designed for reliability and performance. For warranty information, technical support, or service inquiries, please refer to the contact details provided with your purchase or visit the official SEAFRONT website. Please have your model number (LW-K3010D) and purchase date available when contacting support.