1. Uvod
The YIHUA 3005D-III is a high-precision DC power supply designed for laboratory and workbench applications. It offers adjustable output voltage from 0 to 30.0 V and current from 0 to 5.00 A, with fine resolutions for precise control. This manual provides essential information for the safe and effective operation of your device.
2. Sigurnosne informacije
Prije upotrebe uređaja pročitajte i razumite sve sigurnosne upute kako biste spriječili ozljede ili oštećenja.
- Električna sigurnost: Always connect the power supply to a grounded outlet. Do not operate in wet conditions. Ensure the power cord is undamaged.
- Ventilacija: Ensure adequate ventilation around the unit. Do not block the cooling fan or vents.
- Zaštita od preopterećenja: The unit features short-circuit protection and overload protection (Constant Current/Constant Voltage mode) to safeguard the device and connected circuits. A buzzer provides audible feedback during protection events.
- Upravljanje temperaturom: Active temperature management helps maintain optimal operating conditions.
- Unutarnje komponente: Ne pokušavajte otvarati ili servisirati uređaj. Za sve servisne radove obratite se kvalificiranom osoblju.
Figure 2.1: Rear panel illustrating the automatic cooling fan, ground wire connection, and fuse.
3. Proizvod je gotovview
3.1. Prednja ploča
Prednja ploča ima digitalni zaslon za prikaz glasnoćetage, current, and power readings, along with digital encoder knobs for precise adjustments and output terminals.
Figure 3.1: Front panel with precision digital readings. The display shows voltage resolution of 0.01V (10mV), current resolution of 0.0001A (0.1mA), and power resolution of 0.1W.
3.2. Što je u kutiji
- YIHUA 3005D-III DC Power Supply Unit
- Power Cord (230V UK plug)
- Test Leads (U-shape to alligator clips)
Figure 3.2: Included U-shape to alligator clip test leads for easy connection.
4. Postavljanje
- Raspakiranje: Pažljivo izvadite napajanje i sav pribor iz pakiranja. Pregledajte ima li znakova oštećenja.
- Plasman: Place the unit on a stable, level surface, ensuring sufficient space for ventilation, especially around the rear cooling fan.
- Priključak za napajanje: Connect the provided power cord to the power input on the rear of the unit, then plug it into a grounded 230V AC outlet.
- Spajanje ispitnog voda: Connect the test leads to the output terminals on the front panel. The red lead connects to the positive (+) terminal, and the black lead connects to the negative (-) terminal.
5. Upute za rad
5.1. Uključivanje/isključivanje
To power on the unit, flip the power switch located on the rear panel to the 'ON' position. The digital display will illuminate. To power off, flip the switch to the 'OFF' position.
5.2. Podešavanje Voltage i Struja
The YIHUA 3005D-III uses digital encoder knobs for precise adjustment of voltage and current. These eliminate the need for separate coarse and fine adjustment dials.
- Voltage Podešavanje: Koristite gumb 'GLASNOĆA'TAGE' knob to set the desired output voltage. Turning the knob slowly adjusts in small increments (1 unit per click), while turning it quickly allows for larger increments.
- Trenutna prilagodba: Use the 'CURRENT' knob to set the desired output current limit. Similar to voltage, slow turns provide fine adjustment, and quick turns provide coarse adjustment.
Figure 5.1: Digital encoder knob operation for precise voltage i trenutne postavke.
5.3. Konstantni volumentage (CV) and Constant Current (CC) Modes
Napajanje se automatski prebacuje između konstantne glasnoćetage (CV) and Constant Current (CC) modes based on the load characteristics.
- Konstantni Voltage (CV) način rada: Indicated by a green LED. In this mode, the output voltage remains constant at the set value, and the current varies according to the load.
- Način rada s konstantnom strujom (CC): Indicated by a red LED. In this mode, the output current remains constant at the set limit, and the voltage varies according to the load. This mode activates when the load resistance is too low for the set voltage, causing the current to reach its preset limit.
Figure 5.2: Illustration of automatic C.C. and C.V. mode switching based on load properties.
6. Održavanje
- Čišćenje: Prije čišćenja isključite napajanje iz električne mreže. Za brisanje vanjske strane upotrijebite meku, suhu krpu. Nemojte koristiti abrazivna sredstva za čišćenje ili otapala.
- Ventilacija: Periodically check that the cooling fan and vents are free from dust and obstructions.
- Skladištenje: Kada se uređaj ne koristi dulje vrijeme, pohranite ga na suho mjesto bez prašine.
7. Rješavanje problema
| Problem | Mogući uzrok | Otopina |
|---|---|---|
| Nema struje kada je uključen | Power cord not connected; outlet faulty; internal fuse blown. | Check power cord connection; test outlet; contact support for fuse replacement. |
| Izlazni voltage/current is zero or incorrect | Settings are too low; unit in protection mode; faulty connection. | Podesite glasnoćutage/current settings; check for short circuits in the load; verify test lead connections. |
| Zujalica se oglašava neprekidno | Unit is in protection mode (e.g., short-circuit, overload). | Identify and resolve the fault in the connected circuit. The buzzer provides feedback when adjustments are made or when in protection mode. |
| Jedinica se pregrijava | Blokirana ventilacija; prekomjerno opterećenje. | Ensure clear airflow around the unit; reduce load if operating at maximum capacity for extended periods. |
8. Specifikacije
| Značajka | Vrijednost |
|---|---|
| Naziv modela | 3005D-III |
| Marka | YIHUA |
| Izlazni voltage | 0-30.0 V |
| Izlazna struja | 0-5.00 |
| Izlaz Wattage | 150 W (at 30V 5A) |
| Voltage Rezolucija | 0.01 V (10mV) |
| Trenutna rezolucija | 0.0001 A (0.1 mA) |
| Rezolucija snage | 0.1 W |
| Dimenzije (D x Š x V) | 19.5 x 7 x 15.7 cm |
| Težina | 1.67 kg |
| Ulazni voltage | 230 V (UK plug) |
| Proizvođač | Guangzhou Yihua Electronic Equipment Co., Ltd. |
Figure 8.1: Physical dimensions of the YIHUA 3005D-III power supply.
9. Jamstvo i podrška
The YIHUA 3005D-III DC Power Supply comes with a 12-month UK manufacturer warranty. For any technical assistance, questions, or suggestions, please contact our professional technical support team available 24/7 via Amazon. Spare parts and accessories are also available.